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BG | Articles | Volume 15, issue 15
Biogeosciences, 15, 4815–4832, 2018
https://doi.org/10.5194/bg-15-4815-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-15-4815-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 15, 4815–4832, 2018
https://doi.org/10.5194/bg-15-4815-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-15-4815-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Ideas and perspectives 15 Aug 2018
Ideas and perspectives | 15 Aug 2018
Ideas and perspectives: Strengthening the biogeosciences in environmental research networks
Daniel D. Richter et al.
Related authors
Susan L. Brantley, William H. McDowell, William E. Dietrich, Timothy S. White, Praveen Kumar, Suzanne P. Anderson, Jon Chorover, Kathleen Ann Lohse, Roger C. Bales, Daniel D. Richter, Gordon Grant, and Jérôme Gaillardet
Earth Surf. Dynam., 5, 841–860, https://doi.org/10.5194/esurf-5-841-2017, https://doi.org/10.5194/esurf-5-841-2017, 2017
Short summary
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The layer known as the critical zone extends from the tree tops to the groundwater. This zone varies globally as a function of land use, climate, and geology. Energy and materials input from the land surface downward impact the subsurface landscape of water, gas, weathered material, and biota – at the same time that differences at depth also impact the superficial landscape. Scientists are designing observatories to understand the critical zone and how it will evolve in the future.
Matthew L. Trumper, Daniel Griffin, Sarah E. Hobbie, Ian M. Howard, David M. Nelson, Peter B. Reich, and Kendra K. McLauchlan
Biogeosciences, 17, 4509–4522, https://doi.org/10.5194/bg-17-4509-2020, https://doi.org/10.5194/bg-17-4509-2020, 2020
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We developed century-scale records of wood nitrogen isotopes (δ15N) from 16 trees across a long-term savanna fire experiment. Results show similar long-term trajectories in three out of four burn treatments. Lack of evidence to support our hypotheses underscores the complexity of nitrogen dynamics inferred from wood δ15N. This is the first study to our knowledge to investigate multi-decadal effects of fire at different return intervals on wood δ15N, a potential proxy of nitrogen availability.
Maha Deeb, Peter M. Groffman, Manuel Blouin, Sara Perl Egendorf, Alan Vergnes, Viacheslav Vasenev, Donna L. Cao, Daniel Walsh, Tatiana Morin, and Geoffroy Séré
SOIL, 6, 413–434, https://doi.org/10.5194/soil-6-413-2020, https://doi.org/10.5194/soil-6-413-2020, 2020
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The goal of this study was to discuss current methods to create soils adapted for various green infrastructure (GI) designs. Investigating these new soils for several design categories of GI will provide technical information for management and design agencies. Moreover, these studies can serve as pioneer experiments to prevent recurring errors and, thus, provide improved plant growth practices. Results show that these constructed soils have a high potential to provide multiple soil functions.
William R. Wieder, Derek Pierson, Stevan Earl, Kate Lajtha, Sara Baer, Ford Ballantyne, Asmeret Asefaw Berhe, Sharon Billings, Laurel M. Brigham, Stephany S. Chacon, Jennifer Fraterrigo, Serita D. Frey, Katerina Georgiou, Marie-Anne de Graaff, A. Stuart Grandy, Melannie D. Hartman, Sarah E. Hobbie, Chris Johnson, Jason Kaye, Emily Kyker-Snowman, Marcy E. Litvak, Michelle C. Mack, Avni Malhotra, Jessica A. M. Moore, Knute Nadelhoffer, Craig Rasmussen, Whendee L. Silver, Benjamin N. Sulman, Xanthe Walker, and Samantha Weintraub
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2020-195, https://doi.org/10.5194/essd-2020-195, 2020
Preprint under review for ESSD
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Data collected from research networks present opportunities to test theories and develop models about factors responsible for the long-term persistence and vulnerability of soil organic matter (SOM). Here we present the SOils DAta Harmonization database (SoDaH), a flexible database designed to harmonize diverse SOM datasets from multiple research networks.
Debjani Sihi, Xiaofeng Xu, Mónica Salazar Ortiz, Christine S. O'Connell, Whendee L. Silver, Carla López-Lloreda, Julia M. Brenner, Ryan K. Quinn, Jana R. Phillips, Brent D. Newman, and Melanie A. Mayes
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-222, https://doi.org/10.5194/bg-2020-222, 2020
Preprint under review for BG
Short summary
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Humid tropical soils are important sources and sinks of methane. We used model simulation to understand how different kinds of microbes and observed soil moisture and oxygen dynamics contribute to production and consumption of methane along a wet tropical hillslope during normal and drought conditions. Drought alters the diffusion of oxygen and microbial substrates into and out of soil
microsites, resulting in enhanced methane release from the entire hillslope during drought recovery.
Joseph P. Verdian, Leonard S. Sklar, Clifford S. Riebe, and Jeffrey R. Moore
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2020-54, https://doi.org/10.5194/esurf-2020-54, 2020
Preprint under review for ESurf
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River behavior depends on the size of rocks they carry. Rocks are born on hillslopes where erosion removes fragments from solid bedrock. To understand what controls the size of rock fragments, we measured the spacing between cracks exposed in 15 bare-rock cliffs, and the size of rocks on the ground below. We found that, for each site, the average rock size could be predicted from the average distance between cracks, which varied with rock type. This shows how rock type can influence rivers.
Pierre Nevers, Julien Bouchez, Jérôme Gaillardet, Christophe Thomazo, Laeticia Faure, and Catherine Bertrand
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2020-42, https://doi.org/10.5194/esurf-2020-42, 2020
Preprint under review for ESurf
Yang Lin, Ashley N. Campbell, Amrita Bhattacharyya, Nicole DiDonato, Allison M. Thompson, Malak M. Tfaily, Peter S. Nico, Whendee L. Silver, and Jennifer Pett-Ridge
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-59, https://doi.org/10.5194/bg-2020-59, 2020
Manuscript not accepted for further review
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Soils in tropical forests play an important role of breaking down dead plant tissue and returning carbon to the atmosphere. This process is previously thought to be regulated soil oxygen level. However, we found that the break-down of new plant carbon by soils did not depend on oxygen. Even without oxygen, some soil microbes can use plant carbons in the forms like sugar and protein. Once these compounds were exhausted, oxygen limitation became to influence organic matter break-down.
Quentin Charbonnier, Julien Bouchez, Jérôme Gaillardet, and Éric Gayer
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-81, https://doi.org/10.5194/bg-2020-81, 2020
Revised manuscript under review for BG
Short summary
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The abundance and isotope composition of the trace metal barium (Ba) allows us to track and quantify nutrient cycling throughout the Amazon Basin. In particular, we show that the Ba biological fingerprint evolves from that of a strong net nutrient uptake in the moutainous area of the Andes, towards efficient nutrient recycling in the plains of the Lower Amazon. Our study highlights the fact that the geochemical signature of rock-derived nutrients transported by the Amazon is scarred by Life.
Yang Lin, Avner Gross, Christine S. O'Connell, and Whendee L. Silver
Biogeosciences, 17, 89–101, https://doi.org/10.5194/bg-17-89-2020, https://doi.org/10.5194/bg-17-89-2020, 2020
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Phosphorus (P) is an important soil nutrient that often limits plant growth and microbial activity in humid tropical forests. These ecosystems receive a large amount of rainfall that helps create frequent anoxic events in soils. Our results show that anoxic conditions reduced the strength of soil minerals to bind P even though a large amount of P was still bound to minerals. Our study suggests that anoxic events might serve as hot moments for plants and microbes to acquire P.
Corey R. Lawrence, Jeffrey Beem-Miller, Alison M. Hoyt, Grey Monroe, Carlos A. Sierra, Shane Stoner, Katherine Heckman, Joseph C. Blankinship, Susan E. Crow, Gavin McNicol, Susan Trumbore, Paul A. Levine, Olga Vindušková, Katherine Todd-Brown, Craig Rasmussen, Caitlin E. Hicks Pries, Christina Schädel, Karis McFarlane, Sebastian Doetterl, Christine Hatté, Yujie He, Claire Treat, Jennifer W. Harden, Margaret S. Torn, Cristian Estop-Aragonés, Asmeret Asefaw Berhe, Marco Keiluweit, Ágatha Della Rosa Kuhnen, Erika Marin-Spiotta, Alain F. Plante, Aaron Thompson, Zheng Shi, Joshua P. Schimel, Lydia J. S. Vaughn, Sophie F. von Fromm, and Rota Wagai
Earth Syst. Sci. Data, 12, 61–76, https://doi.org/10.5194/essd-12-61-2020, https://doi.org/10.5194/essd-12-61-2020, 2020
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The International Soil Radiocarbon Database (ISRaD) is an an open-source archive of soil data focused on datasets including radiocarbon measurements. ISRaD includes data from bulk or
whole soils, distinct soil carbon pools isolated in the laboratory by a variety of soil fractionation methods, samples of soil gas or water collected interstitially from within an intact soil profile, CO2 gas isolated from laboratory soil incubations, and fluxes collected in situ from a soil surface.
Jason Philip Kaye, Susan L. Brantley, Jennifer Zan Williams, and the SSHCZO team
Biogeosciences, 16, 4661–4669, https://doi.org/10.5194/bg-16-4661-2019, https://doi.org/10.5194/bg-16-4661-2019, 2019
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Interdisciplinary teams can only capitalize on innovative ideas if members work well together through collegial and efficient use of field sites, instrumentation, samples, data, and model code. Thus, biogeoscience teams may benefit from developing a set of best practices for collaboration. We present one such example from a the Susquehanna Shale Hills critical zone observatory. Many of the themes from our example are universal, and they offer insights useful to other biogeoscience teams.
Steffen Buessecker, Kaitlyn Tylor, Joshua Nye, Keith E. Holbert, Jose D. Urquiza Muñoz, Jennifer B. Glass, Hilairy E. Hartnett, and Hinsby Cadillo-Quiroz
Biogeosciences, 16, 4601–4612, https://doi.org/10.5194/bg-16-4601-2019, https://doi.org/10.5194/bg-16-4601-2019, 2019
Short summary
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We investigated the potential for chemical reduction of nitrite into nitrous oxide (N2O) in soils from tropical peat. Among treatments, irradiation resulted in the lowest biological interference and least change of native soil chemistry (iron and organic matter). Nitrite depletion was as high in live or irradiated soils, and N2O production was significant in all tests. Thus, nonbiological production of N2O may be widely underestimated in wetlands and tropical peatlands.
Camille Jourdan, Valérie Borrell-Estupina, David Sebag, Jean-Jacques Braun, Jean-Pierre Bedimo Bedimo, François Colin, Armand Crabit, Alain Fezeu, Cécile Llovel, Jules Rémy Ndam Ngoupayou, Benjamin Ngounou Ngatcha, Sandra Van-Exter, Eric Servat, and Roger Moussa
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2019-116, https://doi.org/10.5194/hess-2019-116, 2019
Revised manuscript under review for HESS
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In the theme Panta Rhei, this paper aims to develop a combined approach of data acquisition and a new semi-distributed non-stationary model taking into account land-use changes to reconstruct and predict annual runoff on an urban catchment in a data-sparse context. We use historical data and deploy a complementary short-term spatially-dense dedicated instrumentation. Applications were conducted on the tropical Mefou catchment (Yaoundé, Cameroon) to assess contributions of sub-catchments.
Patrick R. Kormos, Danny G. Marks, Mark S. Seyfried, Scott C. Havens, Andrew Hedrick, Kathleen A. Lohse, Micah Sandusky, Annelen Kahl, and David Garen
Earth Syst. Sci. Data, 10, 1197–1205, https://doi.org/10.5194/essd-10-1197-2018, https://doi.org/10.5194/essd-10-1197-2018, 2018
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Thirty-one years of hourly gridded (10 m) air temperature, relative humidity, dew point temperature, precipitation amount, and precipitation phase data are presented for the Reynolds Creek Experimental Watershed, Idaho, which is part of the Critical Zone Observatory network. The air temperature, relative humidity, and precipitation are distributed from weather station measurements. This dataset covers a wide range of weather extremes in the rain–snow transition zone from 1984 to 2014.
Roland Baatz, Pamela L. Sullivan, Li Li, Samantha R. Weintraub, Henry W. Loescher, Michael Mirtl, Peter M. Groffman, Diana H. Wall, Michael Young, Tim White, Hang Wen, Steffen Zacharias, Ingolf Kühn, Jianwu Tang, Jérôme Gaillardet, Isabelle Braud, Alejandro N. Flores, Praveen Kumar, Henry Lin, Teamrat Ghezzehei, Julia Jones, Henry L. Gholz, Harry Vereecken, and Kris Van Looy
Earth Syst. Dynam., 9, 593–609, https://doi.org/10.5194/esd-9-593-2018, https://doi.org/10.5194/esd-9-593-2018, 2018
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Focusing on the usage of integrated models and in situ Earth observatory networks, three challenges are identified to advance understanding of ESD, in particular to strengthen links between biotic and abiotic, and above- and below-ground processes. We propose developing a model platform for interdisciplinary usage, to formalize current network infrastructure based on complementarities and operational synergies, and to extend the reanalysis concept to the ecosystem and critical zone.
Susan L. Brantley, William H. McDowell, William E. Dietrich, Timothy S. White, Praveen Kumar, Suzanne P. Anderson, Jon Chorover, Kathleen Ann Lohse, Roger C. Bales, Daniel D. Richter, Gordon Grant, and Jérôme Gaillardet
Earth Surf. Dynam., 5, 841–860, https://doi.org/10.5194/esurf-5-841-2017, https://doi.org/10.5194/esurf-5-841-2017, 2017
Short summary
Short summary
The layer known as the critical zone extends from the tree tops to the groundwater. This zone varies globally as a function of land use, climate, and geology. Energy and materials input from the land surface downward impact the subsurface landscape of water, gas, weathered material, and biota – at the same time that differences at depth also impact the superficial landscape. Scientists are designing observatories to understand the critical zone and how it will evolve in the future.
Paul Floury, Jérôme Gaillardet, Eric Gayer, Julien Bouchez, Gaëlle Tallec, Patrick Ansart, Frédéric Koch, Caroline Gorge, Arnaud Blanchouin, and Jean-Louis Roubaty
Hydrol. Earth Syst. Sci., 21, 6153–6165, https://doi.org/10.5194/hess-21-6153-2017, https://doi.org/10.5194/hess-21-6153-2017, 2017
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We present a new prototype
lab in the fieldnamed River Lab (RL) designed for water quality monitoring to perform a complete analysis at sub-hourly frequency of major dissolved species in river water. The article is an analytical paper to present the proof of concept, its performances and improvements. Our tests reveal a significant improvement of reproducibility compared to conventional analysis in the laboratory. First results are promising for understanding the critical zone.
Susan L. Brantley, David M. Eissenstat, Jill A. Marshall, Sarah E. Godsey, Zsuzsanna Balogh-Brunstad, Diana L. Karwan, Shirley A. Papuga, Joshua Roering, Todd E. Dawson, Jaivime Evaristo, Oliver Chadwick, Jeffrey J. McDonnell, and Kathleen C. Weathers
Biogeosciences, 14, 5115–5142, https://doi.org/10.5194/bg-14-5115-2017, https://doi.org/10.5194/bg-14-5115-2017, 2017
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This review represents the outcome from an invigorating workshop discussion that involved tree physiologists, geomorphologists, ecologists, geochemists, and hydrologists and developed nine hypotheses that could be tested. We argue these hypotheses point to the essence of issues we must explore if we are to understand how the natural system of the earth surface evolves, and how humans will affect its evolution. This paper will create discussion and interest both before and after publication.
Carsten Montzka, Michael Herbst, Lutz Weihermüller, Anne Verhoef, and Harry Vereecken
Earth Syst. Sci. Data, 9, 529–543, https://doi.org/10.5194/essd-9-529-2017, https://doi.org/10.5194/essd-9-529-2017, 2017
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Global climate models require adequate parameterization of soil hydraulic properties, but typical resampling to the model grid introduces uncertainties. Here we present a method to scale hydraulic parameters to individual model grids and provide a global data set that overcomes the problems. It preserves the information of sub-grid variability of the water retention curve by deriving local scaling parameters that enables modellers to perturb hydraulic parameters for model ensemble generation.
Leonard S. Sklar, Clifford S. Riebe, Claire E. Lukens, and Dino Bellugi
Earth Surf. Dynam., 4, 799–818, https://doi.org/10.5194/esurf-4-799-2016, https://doi.org/10.5194/esurf-4-799-2016, 2016
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To better understand how rainfall, erosion, and other landscape processes create patterns of outflow from catchments, we developed a new way of measuring how the land surface is organized. Each hillslope area, where water and sediment are sourced, has an elevation above the catchment outlet and a horizontal distance that materials must travel to reach the outlet. We combined these attributes in a new metric that captures how the production and loss of energy varies within and between catchments.
Wendy H. Yang and Whendee L. Silver
Biogeosciences, 13, 1705–1715, https://doi.org/10.5194/bg-13-1705-2016, https://doi.org/10.5194/bg-13-1705-2016, 2016
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Nitrous oxide and methane are potent greenhouse gases that are both produced and consumed in soil. Using stable isotope tracers, we found that 68 % of nitrous oxide produced in soil was emitted to the atmosphere throughout the growing season in a cornfield despite variable soil conditions. Gross methane production and consumption were tightly coupled, resulting in near-zero net fluxes. Our results challenge our understanding of controls on nitrous oxide and methane dynamics in upland soils.
J. H. Matthes, S. H. Knox, C. Sturtevant, O. Sonnentag, J. Verfaillie, and D. Baldocchi
Biogeosciences, 12, 4577–4594, https://doi.org/10.5194/bg-12-4577-2015, https://doi.org/10.5194/bg-12-4577-2015, 2015
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This research used a long-term data set of near-surface canopy hyperspectral reflectance collected over 5 years to test the ability of these measurements to predict ecosystem carbon flux at a pasture and rice paddy in the California Delta, USA. We determined that each reflectance sampling event best captured the integrated prior week of carbon dioxide uptake, providing an important benchmark for understanding the lagged correlation between ecosystem carbon uptake and biochemical reflectance.
S. J Hall, G. McNicol, T. Natake, and W. L. Silver
Biogeosciences, 12, 2471–2487, https://doi.org/10.5194/bg-12-2471-2015, https://doi.org/10.5194/bg-12-2471-2015, 2015
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We used measurements of radiocarbon to model the decomposition of organic matter associated with minerals in tropical rainforest soils, using contemporary and archived samples. Most organic matter decomposed over 11 to 26 years, while a smaller portion decomposed over centuries. Rates were similar among soils with strongly differing physical and chemical properties, but declined with a proxy for oxygen limitation. Previous models based on one time point may underestimate decomposition rates.
J. W. van Groenigen, D. Huygens, P. Boeckx, Th. W. Kuyper, I. M. Lubbers, T. Rütting, and P. M. Groffman
SOIL, 1, 235–256, https://doi.org/10.5194/soil-1-235-2015, https://doi.org/10.5194/soil-1-235-2015, 2015
Related subject area
Biogeophysics: Physical - Biological Coupling
Abundance and viability of particle-attached and free-floating bacteria in dusty and nondusty air
Linking tundra vegetation, snow, soil temperature, and permafrost
Drivers of the spatial phytoplankton gradient in estuarine–coastal systems: generic implications of a case study in a Dutch tidal bay
Biological and biogeochemical methods for estimating bioirrigation: a case study in the Oosterschelde estuary
Evidence of eddy-related deep ocean current variability in the North-East Tropical Pacific Ocean induced by remote gap winds
Dissolved inorganic nitrogen and particulate organic nitrogen budget in the Yucatán shelf: driving mechanisms through a physical–biogeochemical coupled model
Bacterial and fungal predator – prey interactions modulate soil aggregation
Basal thermal regime affects the biogeochemistry of subglacial systems
Influence of oceanic conditions in the energy transfer efficiency estimation of a micronekton model
Interactive impacts of meteorological and hydrological conditions on the physical and biogeochemical structure of a coastal system
Modulation of the North Atlantic deoxygenation by the slowdown of the nutrient stream
Stand age and species composition effects on surface albedo in a mixedwood boreal forest
Assessing the peatland hummock–hollow classification framework using high-resolution elevation models: implications for appropriate complexity ecosystem modeling
Tidal and seasonal forcing of dissolved nutrient fluxes in reef communities
Ideas and perspectives: Development of nascent autotrophic carbon fixation systems in various redox conditions of the fluid degassing on early Earth
Vertical distribution of chlorophyll in dynamically distinct regions of the southern Bay of Bengal
Remote and local drivers of oxygen and nitrate variability in the shallow oxygen minimum zone off Mauritania in June 2014
Longitudinal contrast in turbulence along a ∼ 19° S section in the Pacific and its consequences for biogeochemical fluxes
Imprint of Southern Ocean mesoscale eddies on chlorophyll
Grazing increases litter decomposition rate but decreases nitrogen release rate in an alpine meadow
Large- to submesoscale surface circulation and its implications on biogeochemical/biological horizontal distributions during the OUTPACE cruise (southwest Pacific)
OUTPACE long duration stations: physical variability, context of biogeochemical sampling, and evaluation of sampling strategy
Reviews and syntheses: on the roles trees play in building and plumbing the critical zone
Effects of shrub and tree cover increase on the near-surface atmosphere in northern Fennoscandia
Morphological plasticity of root growth under mild water stress increases water use efficiency without reducing yield in maize
Amplification of global warming through pH dependence of DMS production simulated with a fully coupled Earth system model
Physical control of interannual variations of the winter chlorophyll bloom in the northern Arabian Sea
Tree growth and its climate signal along latitudinal and altitudinal gradients: comparison of tree rings between Finland and the Tibetan Plateau
Biogeochemical versus ecological consequences of modeled ocean physics
Analytical solution of the nitracline with the evolution of subsurface chlorophyll maximum in stratified water columns
Upwelling and isolation in oxygen-depleted anticyclonic modewater eddies and implications for nitrate cycling
Positive Indian Ocean Dipole events prevent anoxia off the west coast of India
Linking diverse nutrient patterns to different water masses within anticyclonic eddies in the upwelling system off Peru
Can terrestrial laser scanners (TLSs) and hemispherical photographs predict tropical dry forest succession with liana abundance?
Multi-frequency electrical impedance tomography as a non-invasive tool to characterize and monitor crop root systems
The growth of shrubs on high Arctic tundra at Bylot Island: impact on snow physical properties and permafrost thermal regime
Characterization of “dead-zone” eddies in the eastern tropical North Atlantic
Linking the distribution of microbial deposits from the Great Salt Lake (Utah, USA) to tectonic and climatic processes
Physical and biogeochemical spatial scales of variability in the East Australian Current separation from shelf glider measurements
The influence of warm-season precipitation on the diel cycle of the surface energy balance and carbon dioxide at a Colorado subalpine forest site
New insights into the organic carbon export in the Mediterranean Sea from 3-D modeling
Wind-driven interannual variability of sea ice algal production in the western Arctic Chukchi Borderland
Growth response of temperate mountain grasslands to inter-annual variations in snow cover duration
Sensitivity of the regional European boreal climate to changes in surface properties resulting from structural vegetation perturbations
Modeling forest lines and forest distribution patterns with remote-sensing data in a mountainous region of semiarid central Asia
Diatom flux reflects water-mass conditions on the southern Northwind Abyssal Plain, Arctic Ocean
Steady-state solutions for subsurface chlorophyll maximum in stratified water columns with a bell-shaped vertical profile of chlorophyll
Wind-induced upwelling in the Kerguelen Plateau region
Disentangling the response of forest and grassland energy exchange to heatwaves under idealized land–atmosphere coupling
Surface circulation and upwelling patterns around Sri Lanka
Wei Hu, Kotaro Murata, Chunlan Fan, Shu Huang, Hiromi Matsusaki, Pingqing Fu, and Daizhou Zhang
Biogeosciences, 17, 4477–4487, https://doi.org/10.5194/bg-17-4477-2020, https://doi.org/10.5194/bg-17-4477-2020, 2020
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This paper reports the first estimate of the status of bacteria in long-distance-transported Asian dust, demonstrating that airborne dust, which can carry viable and nonviable bacteria on particle surfaces, is an efficient medium for constantly spreading bacteria at regional and even global scales. Such data are essential to better model and understand the roles and activities of bioaerosols in environmental evolution and climate change and the potential risks of bioaerosols to human health.
Inge Grünberg, Evan J. Wilcox, Simon Zwieback, Philip Marsh, and Julia Boike
Biogeosciences, 17, 4261–4279, https://doi.org/10.5194/bg-17-4261-2020, https://doi.org/10.5194/bg-17-4261-2020, 2020
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Based on topsoil temperature data for different vegetation types at a low Arctic tundra site, we found large small-scale variability. Winter temperatures were strongly influenced by vegetation through its effects on snow. Summer temperatures were similar below most vegetation types and not consistently related to late summer permafrost thaw depth. Given that vegetation type defines the relationship between winter and summer soil temperature and thaw depth, it controls permafrost vulnerability.
Long Jiang, Theo Gerkema, Jacco C. Kromkamp, Daphne van der Wal, Pedro Manuel Carrasco De La Cruz, and Karline Soetaert
Biogeosciences, 17, 4135–4152, https://doi.org/10.5194/bg-17-4135-2020, https://doi.org/10.5194/bg-17-4135-2020, 2020
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A seaward increasing chlorophyll-a gradient is observed during the spring bloom in a Dutch tidal bay. Biophysical model runs indicate the roles of bivalve grazing and tidal import in shaping the gradient. Five common spatial phytoplankton patterns are summarized in global estuarine–coastal ecosystems: seaward increasing, seaward decreasing, concave with a chlorophyll maximum, weak spatial gradients, and irregular patterns.
Emil De Borger, Justin Tiano, Ulrike Braeckman, Tom Ysebaert, and Karline Soetaert
Biogeosciences, 17, 1701–1715, https://doi.org/10.5194/bg-17-1701-2020, https://doi.org/10.5194/bg-17-1701-2020, 2020
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By applying a novel technique to quantify organism-induced sediment–water column fluid exchange (bioirrigation), we show that organisms in subtidal (permanently submerged) areas have similar bioirrigation rates as those that inhabit intertidal areas (not permanently submerged), but organisms in the latter irrigate deeper burrows in this study. Our results expand on traditional methods to quantify bioirrigation rates and broaden the pool of field measurements of bioirrigation rates.
Kaveh Purkiani, André Paul, Annemiek Vink, Maren Walter, Michael Schulz, and Matthias Haeckel
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-77, https://doi.org/10.5194/bg-2020-77, 2020
Revised manuscript accepted for BG
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There has been a steady increase of interest in mining of deep-sea minerals in the eastern Pacific Ocean recently. The ocean state in this region is known to be highly influenced by rotating body of water (eddies) which some of them can travel long distances in the ocean and impact the deeper layers of the ocean. A better insight of variability of eddy activity in this region is of great help to mitigate the impact of the benthic ecosystem from future potential deep sea mining activity.
Sheila N. Estrada-Allis, Julio Sheinbaum Pardo, Joao M. Azevedo Correia de Souza, Cecilia Elizabeth Enríquez Ortiz, Ismael Mariño Tapia, and Jorge A. Herrera-Silveira
Biogeosciences, 17, 1087–1111, https://doi.org/10.5194/bg-17-1087-2020, https://doi.org/10.5194/bg-17-1087-2020, 2020
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Continental shelves are the most productive areas in the ocean and can have an important impact on the nutrient cycle as well as the climate system. The one in Yucatán is the largest shelf in the Gulf of Mexico. However, its nutrient budget remains unidentifiable. Here we propose not only a general nutrient budget for the Yucatán Shelf but also the physical processes responsible for its pathway modulation through a physical–biogeochemical coupled model of the whole Gulf of Mexico.
Amandine Erktan, Matthias C. Rillig, Andrea Carminati, Alexandre Jousset, and Stefan Scheu
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-48, https://doi.org/10.5194/bg-2020-48, 2020
Revised manuscript accepted for BG
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Soil aggregation is crucial for protecting soils from erosion, a major worldwide threat. While the role of bacteria and fungi in soil aggregation is well established, how predators feeding on microbes modify soil aggregation has hardly been investigated. We showed for the first time that protists modify soil aggregation, presumably through changes in the production of bacterial mucilage, and that collembolans reduce soil aggregation, presumably by reducing the abundance of saproptrophic fungi.
Ashley Dubnick, Martin Sharp, Brad Danielson, Alireza Saidi-Mehrabad, and Joel Barker
Biogeosciences, 17, 963–977, https://doi.org/10.5194/bg-17-963-2020, https://doi.org/10.5194/bg-17-963-2020, 2020
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We found that glaciers with basal temperatures near the melting point mobilize more solutes, nutrients, and microbes from the underlying substrate and are more likely to promote in situ biogeochemical activity than glaciers with basal temperatures well below the melting point. The temperature at the base of glaciers is therefore an important control on the biogeochemistry of ice near glacier beds, and, ultimately, the potential solutes, nutrients, and microbes exported from glaciated watersheds.
Audrey Delpech, Anna Conchon, Olivier Titaud, and Patrick Lehodey
Biogeosciences, 17, 833–850, https://doi.org/10.5194/bg-17-833-2020, https://doi.org/10.5194/bg-17-833-2020, 2020
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Micronekton is an important, yet poorly known, component of the trophic chain, which partly contributes to the storage of CO2 in the deep ocean thanks to biomass vertical migrations. In this study, we characterize the ideal sampling regions to estimate the amount of biomass that undergoes theses migrations. We find that observations made in warm, nondynamic and productive waters reduce the error of the estimation by 20 %. This result should likely serve for future in situ network deployment.
Onur Kerimoglu, Yoana G. Voynova, Fatemeh Chegini, Holger Brix, Ulrich Callies, Richard Hofmeister, Knut Klingbeil, Corinna Schrum, and Justus E. E. van Beusekom
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-1, https://doi.org/10.5194/bg-2020-1, 2020
Revised manuscript accepted for BG
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In this study, using extensive field observations and a numerical model, we analyzed the physical and biogeochemical structure of a coastal system following an extreme flood event. Our results suggest that a number of anomalous observations were driven by a co-occurrence of peculiar meteorological conditions and increased riverine discharges. Our results call for attention to the combined effects of hydrological and meteorological extremes that are anticipated to increase in frequency.
Filippos Tagklis, Takamitsu Ito, and Annalisa Bracco
Biogeosciences, 17, 231–244, https://doi.org/10.5194/bg-17-231-2020, https://doi.org/10.5194/bg-17-231-2020, 2020
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Deoxygenation of the oceans is potentially one of the most severe ecosystem stressors resulting from global warming given the high sensitivity of dissolved oxygen to ocean temperatures. Climate models suggest that despite the thermodynamic tendency of the oceans to lose oxygen, certain regions experience significant changes in the biologically driven O2 consumption, resulting in a resistance against deoxygenation. Overturning circulation changes are responsible for such a behavior.
Mohammad Abdul Halim, Han Y. H. Chen, and Sean C. Thomas
Biogeosciences, 16, 4357–4375, https://doi.org/10.5194/bg-16-4357-2019, https://doi.org/10.5194/bg-16-4357-2019, 2019
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Using field data collected over 4 years across a range of stand ages, we investigated how seasonal surface albedo in boreal forest varies with stand age, stand structure, and composition. Our results indicate that successional change in species composition is a key driver of age–related patterns in albedo, with hardwood species associated with higher albedo. The patterns described have important implications for both climate modeling and
climate–smartboreal forest management.
Paul A. Moore, Maxwell C. Lukenbach, Dan K. Thompson, Nick Kettridge, Gustaf Granath, and James M. Waddington
Biogeosciences, 16, 3491–3506, https://doi.org/10.5194/bg-16-3491-2019, https://doi.org/10.5194/bg-16-3491-2019, 2019
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Using very-high-resolution digital elevation models (DEMs), we assessed the basic structure and microtopographic variability of hummock–hollow plots at boreal and hemi-boreal sites primarily in North America. Using a simple model of peatland biogeochemical function, our results suggest that both surface heating and moss productivity may not be adequately resolved in models which only consider idealized hummock–hollow units.
Renee K. Gruber, Ryan J. Lowe, and James L. Falter
Biogeosciences, 16, 1921–1935, https://doi.org/10.5194/bg-16-1921-2019, https://doi.org/10.5194/bg-16-1921-2019, 2019
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Researchers from the University of Western Australia's Oceans Institute are studying large tides (up to 12 m range) that occur in the Kimberley region of Australia. These tides flush coral reefs with water rich in nutrients, which supports the growth of reef organisms. In this paper, we show how tidal cycles and seasons control nutrient availability on reefs. This study is among the first published accounts of reefs and water quality data in the remote and pristine Kimberley region.
Sergey A. Marakushev and Ol'ga V. Belonogova
Biogeosciences, 16, 1817–1828, https://doi.org/10.5194/bg-16-1817-2019, https://doi.org/10.5194/bg-16-1817-2019, 2019
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Among the existing theories of the autotrophic origin of life, CO2 is usually considered to be the carbon source for nascent autotrophic metabolism. However, ancestral carbon used in metabolism may have been derived from CH4 if the outflow of magma fluid to the surface of the Earth consisted mainly of methane. The hydrothermal system model is considered in the form of a phase diagram, which demonstrates the area of redox and P and T conditions favorable to development of primary methanotroph.
Venugopal Thushara, Puthenveettil Narayana Menon Vinayachandran, Adrian J. Matthews, Benjamin G. M. Webber, and Bastien Y. Queste
Biogeosciences, 16, 1447–1468, https://doi.org/10.5194/bg-16-1447-2019, https://doi.org/10.5194/bg-16-1447-2019, 2019
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Chlorophyll distribution in the ocean remains to be explored in detail, despite its climatic significance. Here, we document the vertical structure of chlorophyll in the Bay of Bengal using observations and a model. The shape of chlorophyll profiles, characterized by prominent deep chlorophyll maxima, varies in dynamically different regions, controlled by the monsoonal forcings. The present study provides new insights into the vertical distribution of chlorophyll, rarely observed by satellites.
Soeren Thomsen, Johannes Karstensen, Rainer Kiko, Gerd Krahmann, Marcus Dengler, and Anja Engel
Biogeosciences, 16, 979–998, https://doi.org/10.5194/bg-16-979-2019, https://doi.org/10.5194/bg-16-979-2019, 2019
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Physical and biogeochemical observations from an autonomous underwater vehicle in combination with ship-based measurements are used to investigate remote and local drivers of the oxygen and nutrient variability off Mauritania. Beside the transport of oxygen and nutrients characteristics from remote areas towards Mauritania also local remineralization of organic material close to the seabed seems to be important for the distribution of oxygen and nutrients.
Pascale Bouruet-Aubertot, Yannis Cuypers, Andrea Doglioli, Mathieu Caffin, Christophe Yohia, Alain de Verneil, Anne Petrenko, Dominique Lefèvre, Hervé Le Goff, Gilles Rougier, Marc Picheral, and Thierry Moutin
Biogeosciences, 15, 7485–7504, https://doi.org/10.5194/bg-15-7485-2018, https://doi.org/10.5194/bg-15-7485-2018, 2018
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The OUTPACE cruise took place between New Caledonia and French Polynesia. The main purpose was to understand how micro-organisms can survive in a very poor environment. One main source of nutrients is at depth, below the euphotic layer where micro-organisms live. The purpose of the turbulence measurements was to determine to which extent turbulence may
upliftnutrients into the euphotic layer. The origin of the turbulence that was found contrasted along the transect was also determined.
Ivy Frenger, Matthias Münnich, and Nicolas Gruber
Biogeosciences, 15, 4781–4798, https://doi.org/10.5194/bg-15-4781-2018, https://doi.org/10.5194/bg-15-4781-2018, 2018
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Although mesoscale ocean eddies are ubiquitous in the Southern Ocean (SO), their regional and seasonal association with phytoplankton has not been quantified. We identify over 100 000 eddies and determine the associated phytoplankton biomass anomalies using satellite-based chlorophyll (Chl) as a proxy. The emerging Chl anomalies can be explained largely by lateral advection of Chl by eddies. This impact of eddies on phytoplankton may implicate downstream effects on SO biogeochemical properties.
Yi Sun, Xiong Z. He, Fujiang Hou, Zhaofeng Wang, and Shenghua Chang
Biogeosciences, 15, 4233–4243, https://doi.org/10.5194/bg-15-4233-2018, https://doi.org/10.5194/bg-15-4233-2018, 2018
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To investigate how grazing alters litter composition, quality and decomposition, we collected litter from grazing (GP) and grazing exclusion paddocks (GEP) and incubated them in situ and across sites. Grazing increased litter N and grazing exclusion increased litter mass of palatable species and promoted SOC. Litter decomposed faster in GP and N was opposite. Site environment had more impact on litter decomposition. Results may be helpful in developing strategies to restore degraded grasslands.
Louise Rousselet, Alain de Verneil, Andrea M. Doglioli, Anne A. Petrenko, Solange Duhamel, Christophe Maes, and Bruno Blanke
Biogeosciences, 15, 2411–2431, https://doi.org/10.5194/bg-15-2411-2018, https://doi.org/10.5194/bg-15-2411-2018, 2018
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The patterns of the large- and fine-scale surface circulation on biogeochemical and biological distributions are examined in the western tropical South Pacific (WTSP) in the context of the OUTPACE oceanographic cruise. The combined use of in situ and satellite data allows for the identification of water mass transport pathways and fine-scale structures, such as fronts, that drive surface distribution of tracers and microbial community structures.
Alain de Verneil, Louise Rousselet, Andrea M. Doglioli, Anne A. Petrenko, Christophe Maes, Pascale Bouruet-Aubertot, and Thierry Moutin
Biogeosciences, 15, 2125–2147, https://doi.org/10.5194/bg-15-2125-2018, https://doi.org/10.5194/bg-15-2125-2018, 2018
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Oceanographic campaigns to measure biogeochemical processes popularly deploy drifters with onboard incubations to stay in a single body of water. Here, we aggregate physical data taken during such a cruise, OUTPACE, to independently test in a new approach whether the drifter really stayed in what can be considered a single biological or chemical environment. This study concludes that future campaigns would benefit from similar data collection and analysis to validate their sampling strategy.
Susan L. Brantley, David M. Eissenstat, Jill A. Marshall, Sarah E. Godsey, Zsuzsanna Balogh-Brunstad, Diana L. Karwan, Shirley A. Papuga, Joshua Roering, Todd E. Dawson, Jaivime Evaristo, Oliver Chadwick, Jeffrey J. McDonnell, and Kathleen C. Weathers
Biogeosciences, 14, 5115–5142, https://doi.org/10.5194/bg-14-5115-2017, https://doi.org/10.5194/bg-14-5115-2017, 2017
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This review represents the outcome from an invigorating workshop discussion that involved tree physiologists, geomorphologists, ecologists, geochemists, and hydrologists and developed nine hypotheses that could be tested. We argue these hypotheses point to the essence of issues we must explore if we are to understand how the natural system of the earth surface evolves, and how humans will affect its evolution. This paper will create discussion and interest both before and after publication.
Johanne H. Rydsaa, Frode Stordal, Anders Bryn, and Lena M. Tallaksen
Biogeosciences, 14, 4209–4227, https://doi.org/10.5194/bg-14-4209-2017, https://doi.org/10.5194/bg-14-4209-2017, 2017
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We investigate the atmospheric sensitivity to an expansion in shrub and tree cover in the northern Fennoscandia region. We applied a regional weather and climate model in evaluating biophysical effects of increased shrub cover at a fine resolution. We find that shrub cover increase causes a warming that is sensitive to the shrub and tree heights. Cooling effects include increased snow cover, cloud cover, and precipitation. We show that the net warming will likely increase in the future.
Qian Cai, Yulong Zhang, Zhanxiang Sun, Jiaming Zheng, Wei Bai, Yue Zhang, Yang Liu, Liangshan Feng, Chen Feng, Zhe Zhang, Ning Yang, Jochem B. Evers, and Lizhen Zhang
Biogeosciences, 14, 3851–3858, https://doi.org/10.5194/bg-14-3851-2017, https://doi.org/10.5194/bg-14-3851-2017, 2017
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Large yield gaps exist in rain-fed maize in semi-arid regions caused by frequent droughts halfway through the growing period due to uneven distribution of rainfall. It can be questioned whether irrigation systems are economically and ecologically required. Maize yield was not affected by mild water stress due to the morphological plasticity in root growth. Our results help to mitigate drought risk in dry-land agriculture.
Jörg Schwinger, Jerry Tjiputra, Nadine Goris, Katharina D. Six, Alf Kirkevåg, Øyvind Seland, Christoph Heinze, and Tatiana Ilyina
Biogeosciences, 14, 3633–3648, https://doi.org/10.5194/bg-14-3633-2017, https://doi.org/10.5194/bg-14-3633-2017, 2017
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Transient global warming under the high emission scenario RCP8.5 is amplified by up to 6 % if a pH dependency of marine DMS production is assumed. Importantly, this additional warming is not spatially homogeneous but shows a pronounced north–south gradient. Over the Antarctic continent, the additional warming is almost twice the global average. In the Southern Ocean we find a small DMS–climate feedback that counteracts the original reduction of DMS production due to ocean acidification.
Madhavan Girijakumari Keerthi, Matthieu Lengaigne, Marina Levy, Jerome Vialard, Vallivattathillam Parvathi, Clément de Boyer Montégut, Christian Ethé, Olivier Aumont, Iyyappan Suresh, Valiya Parambil Akhil, and Pillathu Moolayil Muraleedharan
Biogeosciences, 14, 3615–3632, https://doi.org/10.5194/bg-14-3615-2017, https://doi.org/10.5194/bg-14-3615-2017, 2017
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The northern Arabian Sea hosts a winter chlorophyll bloom, which exhibits strong interannual variability. The processes responsible for this interannual variation of the bloom are investigated using observations and a model. The interannual fluctuations of the winter bloom are largely related to the interannual mixed-layer depth (MLD) anomalies, which are driven by net heat flux anomalies. MLD controls the bloom amplitude through a modulation of nutrient turbulent fluxes into the mixed layer.
Lixin Lyu, Susanne Suvanto, Pekka Nöjd, Helena M. Henttonen, Harri Mäkinen, and Qi-Bin Zhang
Biogeosciences, 14, 3083–3095, https://doi.org/10.5194/bg-14-3083-2017, https://doi.org/10.5194/bg-14-3083-2017, 2017
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Our results reveal that the change in the tree growth–climate relationship is similar along latitudinal and altitudinal gradients, especially during growing seasons. Moreover, the critical periods for climatic effects on tree radial growth occurred earlier at lower latitudes and altitudes than at the cold ends of the gradients. We further demonstrate the use of daily climate data, as they may disclose more precise gradient patterns that could not be detected if monthly climate data were used.
Sophie Clayton, Stephanie Dutkiewicz, Oliver Jahn, Christopher Hill, Patrick Heimbach, and Michael J. Follows
Biogeosciences, 14, 2877–2889, https://doi.org/10.5194/bg-14-2877-2017, https://doi.org/10.5194/bg-14-2877-2017, 2017
Xiang Gong, Wensheng Jiang, Linhui Wang, Huiwang Gao, Emmanuel Boss, Xiaohong Yao, Shuh-Ji Kao, and Jie Shi
Biogeosciences, 14, 2371–2386, https://doi.org/10.5194/bg-14-2371-2017, https://doi.org/10.5194/bg-14-2371-2017, 2017
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The subsurface chlorophyll maximum layer (SCML) forms near the nitracline. By incorporating a piecewise function for the approximate Gaussian vertical profile of chlorophyll, we derive analytical solutions of a specified nutrient–phytoplankton model. Nitracline depth is deeper than SCML depth, and a thinner SCML corresponds to a steeper nitracline. A higher light attenuation coefficient leads to a shallower but steeper nitracline. Nitracline steepness is independent of surface light intensity.
Johannes Karstensen, Florian Schütte, Alice Pietri, Gerd Krahmann, Björn Fiedler, Damian Grundle, Helena Hauss, Arne Körtzinger, Carolin R. Löscher, Pierre Testor, Nuno Vieira, and Martin Visbeck
Biogeosciences, 14, 2167–2181, https://doi.org/10.5194/bg-14-2167-2017, https://doi.org/10.5194/bg-14-2167-2017, 2017
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High-resolution observational data from underwater gliders and ships are used to investigate drivers and pathways of nutrient upwelling in high-productive whirling ecosystems (eddies). The data suggest that the upwelling is created by the interaction of wind-induced internal waves with the local rotation of the eddy. Because of differences in nutrient and oxygen pathways, a low-oxygen core is established at shallow depth in the high-productive eddies.
Parvathi Vallivattathillam, Suresh Iyyappan, Matthieu Lengaigne, Christian Ethé, Jérôme Vialard, Marina Levy, Neetu Suresh, Olivier Aumont, Laure Resplandy, Hema Naik, and Wajih Naqvi
Biogeosciences, 14, 1541–1559, https://doi.org/10.5194/bg-14-1541-2017, https://doi.org/10.5194/bg-14-1541-2017, 2017
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During late boreal summer and fall, the west coast of India (WCI) experiences hypoxia, which turns into anoxia during some years. We analyze a coupled physical–biogeochemical simulation over the 1960–2012 period to investigate the physical processes influencing oxycline interannual variability off the WCI. We show that fall WCI oxycline fluctuations are strongly related to Indian Ocean Dipole (IOD), with positive IODs preventing anoxia, while negative IODs do not necessarily result in anoxia.
Yonss Saranga José, Heiner Dietze, and Andreas Oschlies
Biogeosciences, 14, 1349–1364, https://doi.org/10.5194/bg-14-1349-2017, https://doi.org/10.5194/bg-14-1349-2017, 2017
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This study aims to investigate the diverse subsurface nutrient patterns observed within anticyclonic eddies in the upwelling system off Peru. Two simulated anticyclonic eddies with opposing subsurface nitrate concentrations were analysed. The results show that diverse nutrient patterns within anticyclonic eddies are related to the presence of water mass from different origins at different depths, responding to variations in depth of the circulation strength at the edge of the eddy.
Gerardo Arturo Sánchez-Azofeifa, J. Antonio Guzmán-Quesada, Mauricio Vega-Araya, Carlos Campos-Vargas, Sandra Milena Durán, Nikhil D'Souza, Thomas Gianoli, Carlos Portillo-Quintero, and Iain Sharp
Biogeosciences, 14, 977–988, https://doi.org/10.5194/bg-14-977-2017, https://doi.org/10.5194/bg-14-977-2017, 2017
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Lianas (woody vines) tend to respond positively to disturbance and show high densities in secondary forests. Lianas are a key component of tropical forests because they may reduce carbon potential. Identifying tools for liana detection is therefore essential for monitoring changes in tropical forests. In this study, we describe how terrestrial laser scanning can be used to detect the presence of lianas in forest stands of different ages in secondary tropical dry forests at a regional scale.
Maximilian Weigand and Andreas Kemna
Biogeosciences, 14, 921–939, https://doi.org/10.5194/bg-14-921-2017, https://doi.org/10.5194/bg-14-921-2017, 2017
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Root systems are essential in nutrient uptake and translocation, but are difficult to characterize non-invasively with existing methods. We propose electrical impedance tomography (EIT) as a new tool for the imaging and monitoring of crop root systems. In a laboratory experiment we demonstrate the capability of the method to capture physiological responses of root systems with high spatial and temporal resolution. We conclude that EIT is a promising functional imaging technique for crop roots.
Florent Domine, Mathieu Barrere, and Samuel Morin
Biogeosciences, 13, 6471–6486, https://doi.org/10.5194/bg-13-6471-2016, https://doi.org/10.5194/bg-13-6471-2016, 2016
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Warming-induced shrub growth in the Arctic traps snow and modifies snow properties, hence the permafrost thermal regime. In the Canadian high Arctic, we measured snow physical properties in the presence and absence of willow shrubs (Salix richardsonii). Shrubs dramatically reduce snow density and thermal conductivity, seriously limiting soil winter cooling. Simulations taking into account only winter changes show that shrub growth leads to a ground winter warming of up to 13 °C.
Florian Schütte, Johannes Karstensen, Gerd Krahmann, Helena Hauss, Björn Fiedler, Peter Brandt, Martin Visbeck, and Arne Körtzinger
Biogeosciences, 13, 5865–5881, https://doi.org/10.5194/bg-13-5865-2016, https://doi.org/10.5194/bg-13-5865-2016, 2016
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Mesoscale eddies with very low–oxygen concentrations at shallow depth have been recently discovered in the eastern tropical North Atlantic. Our analysis shows that low oxygen eddies occur more frequent than expected and are found even close to the equator (8° N). From budget calculations we show that an oxygen reduction of 7 µmol/kg in the depth range of 50–150 m in the eastern tropical North Atlantic (peak reduction is 16 µmol/kg at 100 m depth) can be associated with the dispersion of these eddies.
Anthony Bouton, Emmanuelle Vennin, Julien Boulle, Aurélie Pace, Raphaël Bourillot, Christophe Thomazo, Arnaud Brayard, Guy Désaubliaux, Tomasz Goslar, Yusuke Yokoyama, Christophe Dupraz, and Pieter T. Visscher
Biogeosciences, 13, 5511–5526, https://doi.org/10.5194/bg-13-5511-2016, https://doi.org/10.5194/bg-13-5511-2016, 2016
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The modern hypersaline Great Salt Lake shows an extended modern and ancient microbial sedimentary system. This study on aerial images and field observations discusses the non-random distribution patterns of microbial deposits along linear alignments following isobaths, polygonal geometry or straight alignments along a topographic drop-off. This particular distribution of microbial deposits brings further insights to the reconstruction of paleoenvironments and paleoclimatic changes.
Amandine Schaeffer, Moninya Roughan, Emlyn M. Jones, and Dana White
Biogeosciences, 13, 1967–1975, https://doi.org/10.5194/bg-13-1967-2016, https://doi.org/10.5194/bg-13-1967-2016, 2016
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The water properties of the coastal ocean such as temperature, salt, oxygen, or chlorophyll content vary spatially, and estimates need to be made regarding the scales of variability. Here, we use statistical techniques to determine the spatial variability of ocean properties from high-resolution measurements by gliders. We show that biological activity is patchy compared to the distribution of physical characteristics, and that the size and shape of this is determined by coastal ocean processes.
S. P. Burns, P. D. Blanken, A. A. Turnipseed, J. Hu, and R. K. Monson
Biogeosciences, 12, 7349–7377, https://doi.org/10.5194/bg-12-7349-2015, https://doi.org/10.5194/bg-12-7349-2015, 2015
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The effect of warm-season precipitation on
environmental conditions and ecosystem-scale fluxes at a
high-elevation subalpine forest site was investigated. As would be
expected (based on the surface energy balance), precipitation caused
an increase in latent heat flux (evapotranspiration) and a decrease in
sensible heat flux. The evaporative component of evapotranspiration
was, on average, estimated to be around 6% in dry conditions and
between 15-25% in partially wet conditions.
A. Guyennon, M. Baklouti, F. Diaz, J. Palmieri, J. Beuvier, C. Lebaupin-Brossier, T. Arsouze, K. Béranger, J.-C. Dutay, and T. Moutin
Biogeosciences, 12, 7025–7046, https://doi.org/10.5194/bg-12-7025-2015, https://doi.org/10.5194/bg-12-7025-2015, 2015
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Dissolved organic carbon (DOC) has already been identified as a potentially significant source of carbon export in the Mediterranean Sea, though in situ export estimations are scarce. This work provides a thorough analysis at basin scale of carbon export with the coupled model NEMO-MED12/Eco3M-MED model. The seasonality and the processes of particulate and dissolved carbon production are also investigated. DOC export appears to be dominant in most regions, especially in the eastern basin.
E. Watanabe, J. Onodera, N. Harada, M. N. Aita, A. Ishida, and M. J. Kishi
Biogeosciences, 12, 6147–6168, https://doi.org/10.5194/bg-12-6147-2015, https://doi.org/10.5194/bg-12-6147-2015, 2015
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The current paper presented findings on seasonal and interannual variability of sea ice algal production and biomass over the western Arctic Chukchi Boderland using a pan-Arctic sea ice-ocean modeling approach. In particular, the relationship with wind pattern was focused on. Coupling of physical and biogeochemical analyses provided originality of this study.
P. Choler
Biogeosciences, 12, 3885–3897, https://doi.org/10.5194/bg-12-3885-2015, https://doi.org/10.5194/bg-12-3885-2015, 2015
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It is shown that inter-annual variations in the primary productivity of mountain grasslands are primarily governed by variations in the length of the snow-free period and to a much lesser extent by temperature and precipitation during the growing season. Meteorological variables controlling snow cover dynamics are thus of paramount importance to understand and model the amount and timing of biomass production in mountain pastures.
J. H. Rydsaa, F. Stordal, and L. M. Tallaksen
Biogeosciences, 12, 3071–3087, https://doi.org/10.5194/bg-12-3071-2015, https://doi.org/10.5194/bg-12-3071-2015, 2015
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MODIS land surface data with WRF V3.5.1 and Noah LSM is used to investigate the sensitivity of the atmosphere to changes in structural vegetation in the boreal ecosystem. Results show that high north evergreen forest expansion leads to larger latent heat fluxes, while increased summer precipitation and reduced wind speed lead to lower sensible heat flux. Replacement of evergreen forest with mixed forest have largely opposite effects, moderating the regional effects on the atmosphere.
M. Klinge, J. Böhner, and S. Erasmi
Biogeosciences, 12, 2893–2905, https://doi.org/10.5194/bg-12-2893-2015, https://doi.org/10.5194/bg-12-2893-2015, 2015
J. Onodera, E. Watanabe, N. Harada, and M. C. Honda
Biogeosciences, 12, 1373–1385, https://doi.org/10.5194/bg-12-1373-2015, https://doi.org/10.5194/bg-12-1373-2015, 2015
X. Gong, J. Shi, H. W. Gao, and X. H. Yao
Biogeosciences, 12, 905–919, https://doi.org/10.5194/bg-12-905-2015, https://doi.org/10.5194/bg-12-905-2015, 2015
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Analytical solutions indicate that subsurface chlorophyll maximum (SCM) occurs at or below the depth of optimal growth of phytoplankton, and the depth of SCM layer deepens logarithmically with an increase in surface light intensity; thickness and intensity of the SCM layer are mainly affected by nutrient supply, but independent of surface light intensity; intensity of the SCM strengthens as a result of this layer being shrunk by a higher light attenuation coefficient or a large sinking velocity
S. T. Gille, M. M. Carranza, R. Cambra, and R. Morrow
Biogeosciences, 11, 6389–6400, https://doi.org/10.5194/bg-11-6389-2014, https://doi.org/10.5194/bg-11-6389-2014, 2014
Short summary
Short summary
The Kerguelen Plateau supports a strong spring chlorophyll bloom, in contrast with most of the Southern Ocean. Throughout the Southern Ocean, including in the Kerguelen area, wind can determine oceanic vertical velocities that may bring nutrients to the surface and contribute to the development of blooms. The Kerguelen Island itself generates a wind shadow that locally enhances upwelling velocities to the north of the main axis of the winds, and chlorophyll is high in this upwelling region.
C. C. van Heerwaarden and A. J. Teuling
Biogeosciences, 11, 6159–6171, https://doi.org/10.5194/bg-11-6159-2014, https://doi.org/10.5194/bg-11-6159-2014, 2014
Short summary
Short summary
This study disentangles the response of forest and grassland to heatwaves, to interpret the findings of Teuling et al. (2010), who found systematically higher temperatures over forests than over grasslands in European heatwaves. By means of a study with a simple coupled land–atmosphere model, we show that the increase in stomatal resistance of vegetation under high values of vapor pressure deficit explains most of the differences and that this increase is enhanced by boundary layer feedbacks.
A. de Vos, C. B. Pattiaratchi, and E. M. S. Wijeratne
Biogeosciences, 11, 5909–5930, https://doi.org/10.5194/bg-11-5909-2014, https://doi.org/10.5194/bg-11-5909-2014, 2014
Cited articles
Amiro, B. D., Barr, G. Black, T. A., Bracho, R. Brown, M. Chen, J., Clark, K.
L., Davis, K. J. Desai, A. R., Dore, S., Engel, V., and Fuentes, J. D.,
Goldstein, A. H., Goulden, M. L., Kolb, T. E., Lavigne, M. B., Law, B. E.,
Margolis, H. A., Martin, T., McCaughey, J. H., Misson, L., Montes-Helu, M.,
Noormets, A., Randerson, J. T., Starr, G., and Xiao, J.: Ecosystem carbon
dioxide fluxes after disturbance in forests of North America, J. Geophys.
Res., 115, G00K02, https://doi.org/10.1029/2010JG001390,
2010.
Ashley, G. M.: Where are we headed? “Soft” rock research into the new
millennium, Geol. Soc. Am., Abstract/Program 30, A-148,
1998.
Baldocchi, D. D.: Assessing the eddy covariance technique for evaluating
carbon dioxide exchange rates of ecosystems: past, present and future, Glob.
Change Biol., 9, 479–492, 2003.
Baldocchi, D. D.: Measuring fluxes of trace gases and energy between
ecosystems and the atmosphere–the state and future of the eddy covariance
method, Glob. Change Biol., 20, 3600–3609, 2014.
Baldocchi, D. D., Falge, E., Gu, L., Olson, R., Hollinger, D., Running, S.,
Anthoni, P., Bernhofer, C., Davis, K., Evans, R., and Fuentes, J.: FLUXNET: A
new tool to study the temporal and spatial variability of ecosystem-scale
carbon dioxide, water vapor, and energy flux densities, Bull. Am. Meteorol.
Soc., 82, 2415–2434, 2001.
Banwart, S. A. Bernasconi, S. M., Blum, W. E. H., de Souza, D. M., Chabaux,
F., Duffy, C., Kercheva, M., Krám, P., Lair, G. J., Lundin, L., Menon,
M., Nikolaidis, N. P., Novak, M., Panagos, P., Ragnarsdottir, K.v., Robinson,
D. A., Rousseva, S., de Ruiter, P., van Gaans, P., Weng, L., White, T., and
Zhang B.: Soil functions in Earth's critical zone: key results and
conclusions, Adv. Agron., 142, 1–27, 2017.
Bierman, P. R. and Nichols, K. K.: Rock to sediment-slope to sea with
10Be-rates of landscape change, Annu. Rev. Earth Pl. Sc., 32, 215–55,
2004.
Billings, S. A., Hirmas, D., Sullivan, P. L., Lehmeier, C. A., Bagchi, S.,
Min, K., Brecheisen, Z., Hauser, E., Stair, R., Flournoy, R., and Richter, D.
de B.: Loss of deep roots limits biogenic agents of soil development that are
only partially restored by decades of forest regeneration, Elementa Science
of the Anthropocene, 34, https://doi.org/10.1525/elementa.287, 2018.
Bonan, G. B., Lawrence, P. J., Oleson, K. W., Levis, S., Jung, M.,
Reichstein, M., Lawrence, D. M., and Swenson, S. C.: Improving canopy
processes in the Community Land Model version 4 (CLM4) using global flux
fields empirically inferred from FLUXNET data, J. Geophys. Res., 116, G02014,
https://doi.org/10.1029/2010JG001593, 2011.
Bormann, F. H.: Ecology: a personal history, Annu. Rev. Energ. Env., 21,
1–29, 1996.
Bormann, F. H. and Likens, G. E.: Nutrient cycling, Science, 155, 424–429,
1967.
Brantley, S. L., White, T. S., White, A. F., Sparks, D., Richter, D.,
Pregitzer, K., Derry, L., Chorover, J., Chadwick, O., April, R., Anderson,
S., and Amundson, R.: Frontiers in exploration of the critical zone: Report
of a workshop sponsored by the US National Science Foundation, Newark, DE,
USA, 2006.
Brantley, S. L., Goldhaber, M. B., and Ragnarsdottir, K. V.: Crossing
disciplines and scales to understand the critical zone, Elements, 3,
307–314, 2007.
Brantley, S. L., Eissenstat, D. M., Marshall, J. A., Godsey, S. E.,
Balogh-Brunstad, Z., Karwan, D. L., Papuga, S. A., Roering, J., Dawson, T.
E., Evaristo, J., Chadwick, O., McDonnell, J. J., and Weathers, K. C.:
Reviews and syntheses: on the roles trees play in building and plumbing the
critical zone, Biogeosciences, 14, 5115–5142,
https://doi.org/10.5194/bg-14-5115-2017, 2017a.
Brantley, S. L., McDowell, W. H., Dietrich, W. E., White, T. S., Kumar, P.,
Anderson, S., Chorover, J., Lohse, K. A., Bales, R. C., Richter, D., Grant,
G., and Gaillardet, J.: Designing a network of critical zone observatories to
explore the living skin of the terrestrial Earth, Earth Surf. Dynam., 5,
841–860, https://doi.org/10.5194/esurf-2017-36, 2017b.
Braun, J.-J., Paiz, M.-C., McGrath, M. J., Rabenkogo, N., Mbonda, A. P.,
White, L., Gaillardet, J., Bouchez, J., Moquet, J. S., Regard, V., Carretier,
S., Bricquet, J. P., Mahé, G., and Richter, D. de B.: CZO perspective in
Central Africa: The Lopé watershed, Lopé National Park, Ogooué
River basin, Gabon. International Long Term Ecological Research Network and
LTER-France (Zones Ateliers Network & Critical Zone Observatories) Joint
Conference, Nantes, France, 2017.
Brecheisen, Z.: Macro to micro-legacies of land use at the Calhoun Critical
Zone Observatory, PhD. dissertation, Duke University, Durham, NC, USA, 2018.
Brocard, G. Y., Willenbring, J. K., Scatena, F. N., and Johnson, A. H.:
Effects of a tectonically-triggered wave of incision on riverine exports and
soil mineralogy in the Luquillo Mountains of Puerto Rico, Appl. Geochem., 63,
586–598, 2015.
Brocard, G. Y., Willenbring, J. K., Miller, T. E., and Scatena, F. N.: Relict
landscape resistance to dissection by upstream migrating knickpoints, J.
Geophys. Res.-Earth Surf., 121, 1182–1203, 2016.
Brown, C. T., Hug, L. A., Thomas, B. C., Sharon, I., Castelle, C. J., Singh,
A., Wilkins, M. J., Wrighton, K. C., Williams, K. H., and Banfield, J. F.:
Unusual biology across a group comprising more than 15 % of domain
Bacteria, Nature, 523, 208–211, 2015.
Bueno, C. G., Marín, C., Silva-Flores, P., Aguilera, P., and Godoy, R.:
Think globally, research locally: emerging opportunities for mycorrhizal
research in South America, New Phytol., 215, 1306–1309, 2017.
Callahan, T.: Long-term ecological research, BioScience, 34, 363–367, 2008.
Chancellor, G.: Darwin Online, available at:
http://darwin-online.org.uk/EditorialIntroductions/Chancellor_CoralReefs.html
(last access: 2 August 2018), 2008.
Chen, W., Koide, R. T., Adams, T. S., DeForest, J. L., Cheng, L., and
Eissenstat, D. M.: Root morphology and mycorrhizal symbioses together shape
nutrient foraging strategies of temperate trees, P. Natl. Acad. Sci. USA,
113, 8741–8746, 2016.
Christensen, N. L.: An historical perspective on forest succession and its
relevance to ecosystem restoration and conservation practice in North
America, Forest Ecol. Manag., 330, 312–322, 2014.
Chorover, J., Troch, P. A., Rasmussen, C., Brooks, P. D., Pelletier, J. D.,
Breshears, D. D., Huxman, T. E., Kurc, S. A., Lohse, K. A., McIntosh, J. C.,
and Meixner, T.: How water, carbon, and energy drive critical zone evolution:
The Jemez – Santa Catalina Critical Zone Observatory, Vadose Zone J., 10,
884–899, 2011.
Contreras, S., Santoni, C. S., and Jobbagy, E. G.: Abrupt watercourse
formation in a semiarid sedimentary landscape of central Argentina: the roles
of forest clearing, rainfall variability and seismic activity, Ecohydrology,
6, 794–805, https://doi.org/10.1002/eco.1302, 2012.
Dalkmann, P., Broszat, M., Siebe, C., Willaschek, E., Sakinc, T., Hübner,
J., Amelung, W., and Siemens, J.: Accumulation of pharmaceuticals,
enterococcus, and resistance genes in soils irrigated with wastewater for
zero to 100 years in central Mexico, PLoS ONE, 7, e45397,
https://doi.org/10.1371/journal.pone.0045397, 2012.
Darwin, C.: The formation of vegetable mold, through the action of worms, D.
Appleton, New York, 1882.
Dialynas, Y. G., Bastola, S., Bras, R. L., Marin-Spiotta, E., Silver, W. L.,
Arnone, E., and Noto, L. V.: Impact of hydrologically driven hillslope
erosion and landslide occurrence on soil organic carbon dynamics in tropical
watersheds, Water Res. Res., 52, 8895–8919, 2016.
Evans, F. C.: Ecosystem as the basic unit in ecology, Science, 123,
1127–1128, 1956.
Evaristo, J., Jasechko, S., and McDonnell, J. J.: Global separation of plant
transpiration from groundwater and streamflow, Nature, 525, 91–94, 2015.
Fan, Y.: Groundwater in Earth's critical zone: Relevance to large-scale
patterns and processes, Water Res. Res., 51, 3052–3069, 2015.
Field, J. P., Breshears, D. D., Law, D. J., Villegas, J. C.,
López-Hoffman, L., Brooks, P. D., Chorover, J., and Pelletier, J. D.:
Understanding ecosystem services from a geosciences perspective, Eos, 97,
10–11, https://doi.org/10.1029/2016EO043591, 2016.
Gaillardet J., Braud I., Hankard F., Anquetin S., Bour O., Dorfliger N., de
Dreuzy J. R. Galle S., Galy C., Gogo S., Gourcy L., Lagoun F., Longuevergne
L., Le Borgne T., Naaim-Bouvet F., Nord G, Simonneaux V., Six D., Tallec T.,
and Valentin C.: OZCAR: the French network of Critical Zone Observatories,
Vadose Zone J., in review, 2018.
Giardino, J. R. and Houser, C.: 2015. Principles and Dynamics of the Critical
Zone, Elsevier Press, Amsterdam, 2015.
Gilbert, G. K.: The convexity of hilltops, J. Geol., 17, 344–350, 1909.
Gorham, E.: Northern peatlands: Role in the carbon cycle and probable
responses to climatic warming, Ecol. Appl., 1, 182–195, 1991.
Griffis, T. J.: Tracing the flow of carbon dioxide and water vapor between
the biosphere and atmosphere: A review of optical isotope techniques and
their application, Agr. Forest Meteorol., 174, 85–109, 2013.
Groffman, P. A., Cadenasso, M. L., Cavender-Bares, J., Childers, D. L.,
Grimm, N. B., Grove, J. M., Hobbie, S. E., Hutyra, L. R., Jenerette, G. D.,
McPhearson, T., and Pataki, D. E.: Moving towards a new urban systems
science, Ecosystems, 20, 38–43, https://doi.org/10.1007/s10021-016-0053-4, 2017.
Guédron, S., Duwig, C., Prado, B. L., Point, D., Flores, M. G., and
Siebe, C.: (Methyl)mercury, arsenic, and lead contamination of the World's
largest wastewater irrigation system: The Mezquital Valley (Hidalgo
State-Mexico), Water Air Soil Poll., 225, 2045,
https://doi.org/10.1007/s11270-014-2045-3, 2014.
Hall, S. H. and Silver, W. L.: Synergisms among reactive minerals and
reducing conditions explain spatial patterns of soil carbon in humid tropical
forest soils, Biogeochemistry, 125, 149–165, 2015.
Hall, S., Silver, W., Timokhin, V. I., and Hammel, K. E.: Iron addition to
soil specifically stabilized lignin, Soil Biol. Biochem., 98, 95–98, 2016.
Harmon, M. E., Ferrell, W. K., and Franklin, J. F.: Effects on carbon storage
of conversion of old-growth forests to young forests, Science, 247, 699–702,
1990.
Hedin, L., Chadwick, O., Schimel, J., and Torn, M.: Linking Ecological
Biology and Geoscience: Challenges for Terrestrial Environmental Science,
NSF, Washington, DC, 2002.
Herbert, S.: Charles Darwin, Geologist, Cornell Univ. Press, Ithaca, NY,
2005.
Hinckley, E. L. S., Anderson, S. P., Baron, J. S., Blanken, P. D., Bonan, G.
B., Bowman, W. D., Elmendorf, S. C., Fierer, N., Fox, A. M., Goodman, K. J.,
and Jones, K. D.: Optimizing available network resources to address questions
in environmental biogeochemistry, BioScience, 66, 317–326, 2016.
Hug, L. A., Baker, B. J., Anantharaman, K., Brown, C. T., Probst, A. J.,
Castelle, C. J., Butterfield, C. N., Hernsdorf, A. W., Amano, Y., Ise, K.,
Suzuki, Y., Dudek, N., Relman, D. A., Finstad, K. M., Amundson, R., Thomas,
B. C., and Banfield, J. F.: A new view of the tree of life, Nat. Microbiol.,
1, 1–6, https://doi.org/10.1038/nmicrobiol.2016.48, 2016.
Hursh, C. R., Hoover, M. D., and Fletcher, P. W.: Study in the balanced
water-economy of experimental drainage-areas, Eos, 23, 509–517, 1942.
Hutchinson, G. E.: The biosphere, Sci. Am., 223, 44–53, 1970.
Hutchinson, G. E. and Wollack, A.: Chemical analyses of a core from Lindley
Pond, North Branford, Part 2. Studies on Connecticut lake sediments, Am. J.
Sci., 238, 493–517, 1940.
Huxley, T. H.: Discourses: biological and geological, D. Appleton, New York,
1897.
Jenny, H.: E. W. Hilgard and the birth of modern soil science, Collana Della
Rivista “Agrochimica”, Pisa, Italy, 1961.
Jechalke, S., Broszat, M., Lang, F., Siebe, C., Smalla, K., and Grohmann, E.:
Increased abundance of resistance genes and mobile genetic elements in
Mexican soil irrigated with wastewater for 100 years, Front. Microbiol., 6,
1–10, https://doi.org/10.3389/fmicb.2015.00163, 2015.
Jobbágy, E. G. and Jackson, R. B.: Patterns and mechanisms of soil
acidification in the conversion of grasslands to forests, Biogeochemistry 64,
205–229, 2003.
Jobbágy, E. G. and Jackson, R. B.: Groundwater and soil chemical changes
under phreatophytic tree plantations, J. Geophys. Res.-Biogeo., 112, G02013,
https://doi.org/10.1029/2006JG000246, 2007.
Johnson, E. A. and Martin, Y. E.: A Biogeoscience Approach to Ecosystems,
Cambridge Univ. Press, UK, 2016.
Kim, E.-S., Trisurat, Y., Muraoka, H., Shibata, H., Amoroso, V., Boldgiv, B.,
Hoshizaki, K., Kassim, A. R., Kim, Y.-S., Nguyen, H. Q., Ohte, N., Ong, P.
S., and Wang, C.-P.: The International Long-Term Ecological Research – East
Asia-Pacific Regional Network (ILTER-EAP): history, development, and
perspectives, Ecol. Res., 33, 19–34, https://doi.org/10.1007/s11284-017-1523-7, 2018.
Knohl, A., Schulze, E. D., Kolle, O., and Buchmann, N.: Large carbon uptake
by an unmanaged 250-year-old deciduous forest in Central Germany, Agr. Forest
Meteorol., 118, 151–167, 2003.
Krishnaswamy, J.: Forest management and water in India, in: Forest Management
and the Impact on Water Resources, UNESCO, Paris, France, 2017.
LaBaugh, J. W., Harte, P. T., Shapiro, A. M., Hsieh, P. A., Johnson, C. D.,
Goode, D. J., Wood, W. W., Buso, D. C., Likens, G. E., and Winter, T. C.:
Physical, chemical, and isotopic data from groundwater in the watershed of
Mirror Lake, and in the vicinity of Hubbard Brook, near West Thornton, New
Hampshire, 1983 to 1997, US Geological Survey Open-File Report, 2013–1087,
https://doi.org/10.3133/ofr20131087, 2013.
Law, B. E., Falge, E., Gu, L. V., Baldocchi, D. D., Bakwin, P., Berbigier,
P., Davis, K., Dolman, A. J., Falk, M., Fuentes, J. D., and Goldstein, A.:
Environmental controls over carbon dioxide and water vapor exchange of
terrestrial vegetation, Agr. Forest Meteorol., 113, 97–120, 2002.
Leigh, R. A. and Johnston, A. E. (Eds.): Long-Term Experiments in
Agricultural and Ecological Sciences, CAB International, Wallingford, UK,
1994.
Lindeman, R. L.: The trophic-dynamic aspect of ecology, Ecology, 23,
399–417, 1942.
Lindenmayer, D. B. and Likens, G. E.: Adaptive monitoring: a new paradigm for
long-term research and monitoring, Trend. Ecol. Evol., 24, 482–486, 2009.
Lindenmayer, D. B., Likens, G. E., and Franklin, J. F.: Earth observatory
networks (EONs): Finding the right balance, Trend. Ecol. Evol., 33, 1–3,
2018.
Magnuson, J. J.: Long-term ecological research and the invisible present,
BioScience, 40, 495–501, 1990.
Markewitz, D., Richter, D. D., Allen, H. L., and Urrego, J. B.: Three decades
of observed soil acidification in the Calhoun Experimental Forest: Has acid
rain made a difference?, Soil Sci. Soc. Am. J., 62, 1428–1439, 1998.
McDowell, W. H., Brereton, R. L., Scatena, F. N., Shanley, J. B., Brokaw, N.
V., and Lugo, A. E.: Interactions between lithology and biology drive the
long-term response of stream chemistry to major hurricanes in a tropical
landscape, Biogeochemistry, 116, 175–186, 2013.
McGill, W. B., Cannon, K. R., Robertson, J. A., and Cook, F. D.: Dynamics of
soil microbial biomass and water-soluble C in Breton after 50 years of
cropping to two rotations, Can. J. Soil Sci., 66, 1–19, 1986.
McIntosh, R. P.: The Background of Ecology, Cambridge Univ. Press, UK, 1985.
Miller, G. R., Chen, X. Y., Rubin, Y., Ma, S. Y., and Baldocchi, D. D.:
Groundwater uptake by woody vegetation in a semiarid oak savanna, Water
Resour. Res., 46, W10503, https://doi.org/10.1029/2009WR008902, 2010.
Mirtl, M., Borer, E., Djukic, I., Forsius, M., Haubold, H., Hugo, W. Jourdan,
J., Lindenmayer, D., McDowell, W. H., Muraoka, H., Orenstein, D., Pauw, J.
C., Peterseil, J., Shibata, H., Wohner, C., Yu, X., and Haase, P.: Genesis,
goals and achievements of Long-Term Ecological Research at the global scale:
A critical review of ILTER and future directions, Sci. Total Environ., 613,
1376–1384, 2018.
Moncrieff, J. B., Massheder, J. M., de Bruin, H., Elbers, J., Friborg, T.,
Heusinkveld, B., Kabat, P., Scott, S., Soegaard, H., and Verhoef, A.: A
system to measure fluxes of momentum, sensible heat, water vapour and carbon
dioxide, J. Hydrol., 188/189, 589–611, 1997.
National Research Council, Committee on Basic Research Opportunities in the
Earth Sciences: Basic Research Opportunities in Earth Science, National
Academy Press, Washington, DC, 2001.
Odum, E. P.: Energy flow in ecosystems: a historical review, Am. Zool., 8,
11–18, 1968.
Odum, E. P.: The strategy of ecosystem development, Science, 164, 262–270,
1969.
Odum, H. T.: Primary production in flowing waters, Limnol. Oceanogr., 1,
102–117, 1956.
O'Neill, K. and de Richter, D. B.: Learning from the “deep changes in the
land”: The Critical Zone perspective in environmental science education,
Earth Sci., 32, 25–27, 2016.
Park, J. H., Goldstein, A. H., Timkovsky, J., Fares, S., Weber, R., Karlik,
J., and Holzinger, R.: Active atmosphere-ecosystem exchange of the vast
majority of detected volatile organic compounds, Science, 341, 643–647,
2013.
Paton, T. R., Humphreys, G. S., and Mitchell, P. B.: Soils – A New Global
View. Yale University Press, New Haven, CT, USA, 1995.
Petrescu, A. M. R., Lohila, A., Tuovinen, J.-P., et al.: The uncertain
climate footprint of wetlands under human pressure, P. Natl. Acad. Sci. USA,
112, 4594–4599, 2015.
Platt, B., Kolb, D., Kunhardt, C., Milo, S. P., and New, L. G.: Burrowing
through the literature: the impact of soil-disturbing vertebrates on physical
and chemical properties of soil, Soil Sci., 181, 175–191, 2016.
Raupach, M. R.: Anomalies in flux-gradient relationships over forest,
Bound.-Lay. Meteorol., 16, 467–486, https://doi.org/10.1007/ BF03163564, 1979.
Reichle, D. E. (Ed.): Dynamic Properties of Forest Ecosystems, Cambridge
University Press, UK, 1981.
Rempe, D. M. and Dietrich, W. E.: A bottom-up control on fresh-bedrock
topography under landscapes, P. Natl. Acad. Sci. USA, 111, 6576–6581, 2014.
Reynolds, O.: On the dynamical theory of incompressible viscous fluids and
the determination of criterion, Philos. T. R. Soc. A, 174, 935–982, 1895.
Richter, D. D. and Markewitz, D.: Understanding soil change, Cambridge
University Press, UK, 2001.
Richter, D. de B. and Billings, S. A.: “One physical system”: Tansley's
ecosystem as Earth's critical zone, New Phytol., 206, 900–912, 2015.
Richter, D. de B. and Yaalon, D.: “The changing model of soil” revisited,
Soil Sci. Soc. Am. J., 76, 766–778, 2012.
Richter, D. de B., Hofmockel, M., Callaham, M. A., Powlson, D. S., and Smith,
P.: Long-term soil experiments: Keys to managing Earth's rapidly changing
ecosystems, Soil Sci. Soc. Am. J., 71, 266–279,
https://doi.org/10.2136/sssaj2006.0181, 2007.
Riebe, C. S., Hahm, W. J., and Brantley, S. L.: Controls on deep critical
zone architecture: A historical review and four testable hypotheses, Earth
Surf. Proc. Landf., 42, 128–156, https://doi.org/10.1002/esp.4052, 2017.
Rinne, J., Riutte, T., Pihlatie, M., Aurela, M., Haapanala, S., Tuovinen,
J.-P., Tuittila, E.-S., and Vesala, T.: Annual cycle of methane emission from
a boreal fen measured by the eddy covariance technique, Tellus B, 59,
449–457, 2007.
Robertson, G. P., Allen, V. G., Boody, G., Boose, E. R., Creamer, N. G.,
Drinkwater, L. E., Gosz, J. R., Lynch, L., Havlin, J. L., Jackson, L. E.,
Pickett, S. T. A., Pitelka, L., Randall, A., Reed, A. S., Seastedt, T. R.,
Waide, R. B., and Wall, D. H.: Long-term agricultural research: A research,
education, and extension imperative, BioScience, 58, 640–645, 2008.
Rossiter, M. W.: The Emergence of Agricultural Science – Justus Liebig and
the Americans, Yale University Press, New Haven, CT, USA, 1975.
Schroeder, P. A.: Clays in the Critical Zone, Cambridge University Press, UK,
2018.
Shanley, J. B., McDowell, W. H., and Stallard, R. F.: Long-term patterns and
short-term dynamics of stream solutes and suspendedsediment in a rapidly
weathering tropical watershed, Water Res. Res., 47, W07515,
https://doi.org/10.1029/2010WR009788, 2011.
Siebe, C., Chapela-Lara, M., Cayetano-Salazar, M., Prado, B., and Siemens,
J.: Effects of 100 years of Soil-Aquifer-Treatment of Mexico City's
wastewater in the Mezquital valley, in: Safe Use of Wastewater in
Agriculture: Good Practice Examples, edited by: Hettiarachchi, H. and
Ardakanian, R., Dresden, UNU-FLORES, 2016.
Sier, A. and Monteith, D.: The UK Environmental Change Network after twenty
years of integrated ecosystem assessment: Key findings and future
perspectives, Ecol. Indic., 68, 1–12, 2016.
Slobodkin, L. B.: An appreciation: George Evelyn Hutchinson, J. Anim. Ecol.,
62, 390–394, 1993.
Smith, P., Falloon, P. D., Körschens, M., Shevtsova, L. K., Franko, U.,
Romanenkov, V., Coleman, K., Rodionova, V., Smith, J. U., and Schramm, G.:
EuroSOMNET – a European database of long-term experiments on soil organic
matter: the WWW metadatabase, J. Agr. Sci., 138, 123–134,
https://doi.org/10.1017/S0021859601001800, 2002.
St. Clair, J., Moon, S., Holbrook, W. S., Perron, J. T., Riebe, C. S.,
Martel, S. J., Carr, B., Harman, C., Singha, K., and Richter, D. de B.:
Geophysical imaging reveals topographic stress control of bedrock weathering,
Science, 350, 534–538, 2015.
Stichweh, R.: The sociology of scientific disciplines: On the genesis and
stability of the disciplinary structure of modern science, Sci. Context, 5,
3–15, 1992.
Swanson, F. J. and Franklin, J. F.: The long-term ecological research
program, Eos, 69, 34–36, 1988.
Tahir, M., Lv, Y., Gao, L., Hallett, P. D., and Peng, X.: Soil water dynamics
and availability for citrus and peanut along a hillslope at the Sunjia Red
Soil Critical Zone Observatory (CZO), Soil Till. Res., 163, 110–118, 2016.
Tansley, A. G.: The use and abuse of vegetational concepts and terms,
Ecology, 16, 284–307, 1935.
Thaker, A., Bagchi, S., Shanker, K., Krishnaswamy, J., Kunte, K., Namboothri,
N., Quader, S., Rai, N., Ratnam, J., Robin, V. V., Sankaran, M., Sridhar, A.,
Subramanian, K. A., and Vanak, A. T.: Indian Long Term Ecological
Observatories,
Ministry of Environment, Forest and Climate Change, India, 2015.
Thompson, S. E., Harman, C. J., Troch, P. A., Brooks, P. D., and Sivapalan,
M.: Spatial scale dependence of ecohydrologically mediated water balance
partitioning: A synthesis framework for catchment ecohydrology, Water Resour.
Res., 47, W00J03, https://doi.org/10.1029/2010WR009998, 2011.
Tilman, D., Dodd, M. E., Silvertown, J., Poulton, P. R., Johnston, A. E., and
Crawley, M. J.: The Park Grass Experiment: Insights from the most long-term
ecological study, in: Long-Term Experiments in Agriculture and Ecological
Sciences, edited by: Leigh, R. A. and Johnston, A. E., CAB International,
Wallingford, UK, 287–303, 1994.
Tirol-Padre, A. and Ladha, J. K.: Integrating rice and wheat productivity
trends using the SAS mixed-procedure and meta-analysis, Field Crops Res., 95,
75–88, 2006.
Tramontana, G., Ichii, K., Camps-Valls, G., Tomelleri, E., and Papale, D.:
Uncertainty analysis of gross primary production upscaling using random
forests, remote sensing and eddy covariance data, Remote Sens. Environ.,
168, 360–373, 2015.
Van den Hoof, C., Vidale P. L., Verhoef, A., and Vincke, C.: Improved
evaporative flux partitioning and carbon flux in the land surface model
JULES: Impact on the simulation of land surface processes in temperate
Europe, Agr. Forest Meteorol., 181, 108–124, 2013.
Vernadsky, V. I.: The Biosphere. Copernicus, Springer-Verlag, New York, 1998.
Walters, M. and Scholes, R. J.: The GEO handbook on biodiversity observatory
networks, Springer Open, Switzerland, 2016.
Waters, C. N., Zalasiewicz, J., Summerhayes, C., Barnosky, A. D., Poirier,
C., Gałuszka, A., Cearreta, A., Edgeworth, M., Ellis, E. C., Ellis, M.,
Jeandel, C., Leinfelder, R., McNeill, J. R., Richter, D. de B., Steffen, W.,
Syvitski, J., Vidas, D., Wagreich, M., Williams, M., Zhisheng, A., Grinevald,
J., Odada, E., Oreskes, N., and Wolfe, A. P.: The Anthropocene is
functionally and stratigraphically distinct from the Holocene, Science, 351,
137 pp., 2016.
Webb, N., Herrick, J., Van Zee, J., Courtright, E., Hugenholtz, C., Zobeck,
T. M., Okin, G. S., Barchyn, T. E., Billings, B. J., Boyd, R., Clingan, S.,
Cooper, B., Duniway, M. C., Derner, J.D., Fox, F. A., Havstad, K. M.,
Heilman, P., LaPlante, V., Ludwig, N. A., Metz, L. J., Nearing, M. A.,
Norfleet, L., Pierson, F. B., Sanderson, M. A., Sharratt, B. S., Steiner, J.
L., Tatarko, J., Tedela, N. H., Toledo, D., Unnasch, R. S., Van Pelt, S., and
Wagner, L.: The National Wind Erosion Research Network: Building a
standardized long-term data resource for aeolian research, modeling and land
management, Aeolian Res., 22, 23–36, 2016.
Winchell, E. W., Anderson, R. S., Lombardi, E. M., and Doak, D. F.: Gophers
as geomorphic agents in the Colorado Front Range subalpine zone,
Geomorphology, 264, 41–51, 2016.
Wofsy, S. C., Goulden, M. L., Munger, J. W., Fan, S. M., Bakwin, P. S.,
Daube, B. C., Bassow, S. L., and Bazzaz, F. A.: Net exchange of CO2 in a
mid-latitude forest, Science, 260, 1314–1317, 1993.
Wolf, J., Brocard, G., Willenbring, J., Porder, S., and Uriarte, M.: Abrupt
change in forest height along a tropical elevation gradient detected using
airborne LiDAR, Remote Sens., 8, 864, https://doi.org/10.3390/rs8100864, 2016.
Wu, J.: Hierarchy and scaling: extrapolating information along a scaling
ladder, Can. J. Remote Sens., 25, 367–380, 1999.
Wymore, A. S., West, N. R., Maher, K., Sullivan, P. L., Harpold, A., Karwan,
D., Marshall, J. A., Perdrial, J., Rempe, D. M., and Ma, L.: Growing new
generations of critical zone scientists, Earth Surf. Proc. Landf., 42,
2498–2502, 2017.
Zacharias, S., Bogena, H., Samaniego, L., Mauder, M., Fuss, R., Pütz, T.,
Frenzel, M., Schwank, M., Baessler, C., Buerbach-Bahl, K., Bens, O., Borg,
E., Brauer, A., Dietrich, P., Hajnsek, I., Helle, G., Kiese, R., Kunstmann,
H., Klotz, S., Munch, J. C., Papen, H., Priesack, E., Schmid, H. P.,
Steinbrecher, R., Rosenbaum, U., Teutsch, G., and Vereecken, H.: A network of
terrestrial environmental observatories in Germany, Vadose Zone J., 10,
955–973, 2011.
Zhao, B. Q., Li, X. Y., Liu, H., Wang, B. R., Zhu, P., Huang, S. M., Bao, D.
J., and Li, Y. T.: Results from long-term fertilizer experiments in China:
The risk of groundwater pollution by nitrate, Wageninen Journal of Life
Sciences, 58, 177–183, https://doi.org/10.1016/j.njas.2011.09.004, 2011.
Zhu, Y.-G., Gillings, M., Simonet, P., Stekel, D., Banwart, S. A., and
Penuelas, J.: Microbial mass movements, Science, 357, 1099–1100, 2017a.
Zhu, Y.-G., Reid, B. J., Meharg, A. A., Banwart, S. A., and Fu, B.-J.:
Optimizing Peri-Urban Ecosystems (PURE) to re-couple urban-rural symbiosis.,
Sci. Total Environ., 586, 1085–1090, 2017b.
Zhu, Y.-G., Gillings, M., Simonet, P., Stekel, D., Banwart, S., and Penualas,
J.: Human dissemination of genes and microorganisms in Earth's Critical Zone,
Glob. Change Biol., 24, 1488–1499, 2018.
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As knowledge in biology and geology explodes, science becomes increasingly specialized. Given the overlap of the environmental sciences, however, the explosion in knowledge inevitably creates opportunities for interconnecting the biogeosciences. Here, 30 scientists emphasize the opportunities for biogeoscience collaborations across the world’s remarkable long-term environmental research networks that can advance science and engage larger scientific and public audiences.
As knowledge in biology and geology explodes, science becomes increasingly specialized. Given...
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