Articles | Volume 10, issue 3
https://doi.org/10.5194/bg-10-2129-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-10-2129-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
27 Mar 2013
Research article |
| 27 Mar 2013
Forcing of dissolved organic carbon release by phytoplankton by anticyclonic mesoscale eddies in the subtropical NE Atlantic Ocean
S. Lasternas
Global Change Research Department, IMEDEA (CSIC-UIB), Miquel Marqués 21, 07190 Esporles, Spain
M. Piedeleu
Instituto Universitario de Oceanografía y Cambio Global (IOCAG-ULPGC), Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
P. Sangrà
Instituto Universitario de Oceanografía y Cambio Global (IOCAG-ULPGC), Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
C. M. Duarte
Global Change Research Department, IMEDEA (CSIC-UIB), Miquel Marqués 21, 07190 Esporles, Spain
The UWA Oceans Institute, The University of Western Australia, 35 Stirling Highway, 6009 Crawley, Australia
S. Agustí
Global Change Research Department, IMEDEA (CSIC-UIB), Miquel Marqués 21, 07190 Esporles, Spain
The UWA Oceans Institute and School of Plant Biology, The University of Western Australia, 35 Stirling Highway, 6009 Crawley, Australia
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S. Lasternas and S. Agustí
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R. Vaquer-Sunyer, C. M. Duarte, J. Holding, A. Regaudie-de-Gioux, L. S. García-Corral, M. Reigstad, and P. Wassmann
Biogeosciences, 10, 1451–1469, https://doi.org/10.5194/bg-10-1451-2013, https://doi.org/10.5194/bg-10-1451-2013, 2013
M. Alcaraz, R. Almeda, E. Saiz, A. Calbet, C. M. Duarte, S. Agustí, R. Santiago, and A. Alonso
Biogeosciences, 10, 689–697, https://doi.org/10.5194/bg-10-689-2013, https://doi.org/10.5194/bg-10-689-2013, 2013
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Western rock lobster larvae spend up to 11 months in offshore waters before ocean currents and their ability to swim transport them back to the coast. In 2008, there was a reduction in the number of puerulus (larvae) settling into the fishery. We use an oceanographic model to see how the environment may have contributed to the reduction. Our results show that a combination of effects from local currents and a widespread quiet period in the ocean off WA likely led to less puerulus settlement.
Rémy Asselot, Frank Lunkeit, Philip B. Holden, and Inga Hense
Biogeosciences, 19, 223–239, https://doi.org/10.5194/bg-19-223-2022, https://doi.org/10.5194/bg-19-223-2022, 2022
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Previous studies show that phytoplankton light absorption can warm the atmosphere, but how this warming occurs is still unknown. We compare the importance of air–sea heat versus CO2 flux in the phytoplankton-induced atmospheric warming and determine the main driver. To shed light on this research question, we conduct simulations with a climate model of intermediate complexity. We show that phytoplankton mainly warms the atmosphere by increasing the air–sea CO2 flux.
Roxane Tzortzis, Andrea M. Doglioli, Stéphanie Barrillon, Anne A. Petrenko, Francesco d'Ovidio, Lloyd Izard, Melilotus Thyssen, Ananda Pascual, Bàrbara Barceló-Llull, Frédéric Cyr, Marc Tedetti, Nagib Bhairy, Pierre Garreau, Franck Dumas, and Gérald Gregori
Biogeosciences, 18, 6455–6477, https://doi.org/10.5194/bg-18-6455-2021, https://doi.org/10.5194/bg-18-6455-2021, 2021
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This work analyzes an original high-resolution data set collected in the Mediterranean Sea. The major result is the impact of a fine-scale frontal structure on the distribution of phytoplankton groups, in an area of moderate energy with oligotrophic conditions. Our results provide an in situ confirmation of the findings obtained by previous modeling studies and remote sensing about the structuring effect of the fine-scale ocean dynamics on the structure of the phytoplankton community.
Johannes Vogel, Eva Paton, and Valentin Aich
Biogeosciences, 18, 5903–5927, https://doi.org/10.5194/bg-18-5903-2021, https://doi.org/10.5194/bg-18-5903-2021, 2021
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This study investigates extreme ecosystem impacts evoked by temperature and soil moisture in the Mediterranean Basin for the time span 1999–2019 with a specific focus on seasonal variations. The analysis showed that ecosystem vulnerability is caused by several varying combinations of both drivers during the yearly cycle. The approach presented here helps to provide insights on the specific phenological stage of the year in which ecosystem vulnerability to a certain climatic condition occurs.
Mara Freilich, Alexandre Mignot, Glenn Flierl, and Raffaele Ferrari
Biogeosciences, 18, 5595–5607, https://doi.org/10.5194/bg-18-5595-2021, https://doi.org/10.5194/bg-18-5595-2021, 2021
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Observations reveal that in some regions phytoplankton biomass increases during the wintertime when growth conditions are sub-optimal, which has been attributed to a release from grazing during mixed layer deepening. Measurements of grazer populations to support this theory are lacking. We demonstrate that a release from grazing when the winter mixed layer is deepening holds only for certain grazing models, extending the use of phytoplankton observations to make inferences about grazer dynamics.
Shuangling Chen, Mark L. Wells, Rui Xin Huang, Huijie Xue, Jingyuan Xi, and Fei Chai
Biogeosciences, 18, 5539–5554, https://doi.org/10.5194/bg-18-5539-2021, https://doi.org/10.5194/bg-18-5539-2021, 2021
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Subduction transports surface waters to the oceanic interior, which can supply significant amounts of carbon and oxygen to the twilight zone. Using a novel BGC-Argo dataset covering the western North Pacific, we successfully identified the imprints of episodic shallow subduction patches. These subduction patches were observed mainly in spring and summer (70.6 %), and roughly half of them extended below ~ 450 m, injecting carbon- and oxygen-enriched waters into the ocean interior.
Pierre Damien, Julio Sheinbaum, Orens Pasqueron de Fommervault, Julien Jouanno, Lorena Linacre, and Olaf Duteil
Biogeosciences, 18, 4281–4303, https://doi.org/10.5194/bg-18-4281-2021, https://doi.org/10.5194/bg-18-4281-2021, 2021
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The Gulf of Mexico deep waters are relatively poor in phytoplankton biomass due to low levels of nutrients in the upper layers. Using modeling techniques, we find that the long-living anticyclonic Loop Current eddies that are shed episodically from the Yucatan Channel strongly shape the distribution of phytoplankton and, more importantly, stimulate their growth. This results from the contribution of multiple mechanisms of physical–biogeochemical interactions discussed in this study.
Sergey V. Stanichny, Elena A. Kubryakova, and Arseny A. Kubryakov
Biogeosciences, 18, 3173–3188, https://doi.org/10.5194/bg-18-3173-2021, https://doi.org/10.5194/bg-18-3173-2021, 2021
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In this paper, we show that the short-term impact of tropical cyclones can trigger the intense, long-term bloom of coccolithophores, which are major marine calcifiers playing an important role in the balance and fluxes of inorganic carbon in the ocean. In our paper, we describe the evolution of and physical reasons for such an unusual bloom observed in autumn 2005 in the Black Sea on the basis of satellite data.
Fengshan Liu, Ying Chen, Nini Bai, Dengpan Xiao, Huizi Bai, Fulu Tao, and Quansheng Ge
Biogeosciences, 18, 2275–2287, https://doi.org/10.5194/bg-18-2275-2021, https://doi.org/10.5194/bg-18-2275-2021, 2021
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The sowing date is key to the surface biophysical processes in the winter dormancy period. The climate effect of the sowing date shift is therefore very interesting and may contribute to the mitigation of climate change. An earlier sowing date always had a higher LAI but a higher temperature in the dormancy period and a lower temperature in the growth period. The main reason was the relative contributions of the surface albedo and energy partitioning processes.
Peter Aartsma, Johan Asplund, Arvid Odland, Stefanie Reinhardt, and Hans Renssen
Biogeosciences, 18, 1577–1599, https://doi.org/10.5194/bg-18-1577-2021, https://doi.org/10.5194/bg-18-1577-2021, 2021
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In the literature, it is generally assumed that alpine lichen heaths keep their direct environment cool due to their relatively high albedo. However, we reveal that the soil temperature and soil heat flux are higher below lichens than below shrubs during the growing season, despite a lower net radiation for lichens. We also show that the differences in microclimatic conditions between these two vegetation types are more pronounced during warm and sunny days than during cold and cloudy days.
Oleg Sizov, Ekaterina Ezhova, Petr Tsymbarovich, Andrey Soromotin, Nikolay Prihod'ko, Tuukka Petäjä, Sergej Zilitinkevich, Markku Kulmala, Jaana Bäck, and Kajar Köster
Biogeosciences, 18, 207–228, https://doi.org/10.5194/bg-18-207-2021, https://doi.org/10.5194/bg-18-207-2021, 2021
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In changing climate, tundra is expected to turn into shrubs and trees, diminishing reindeer pasture and increasing risks of tick-borne diseases. However, this transition may require a disturbance. Fires in Siberia are increasingly widespread. We studied wildfire dynamics and tundra–forest transition over 60 years in northwest Siberia near the Arctic Circle. Based on satellite data analysis, we found that transition occurs in 40 %–85 % of burned tundra compared to 5 %–15 % in non-disturbed areas.
Kaveh Purkiani, André Paul, Annemiek Vink, Maren Walter, Michael Schulz, and Matthias Haeckel
Biogeosciences, 17, 6527–6544, https://doi.org/10.5194/bg-17-6527-2020, https://doi.org/10.5194/bg-17-6527-2020, 2020
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There has been a steady increase in 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 bodies of water (eddies), some of which can travel long distances in the ocean and impact the deeper layers of the ocean. Better insight into the 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.
Jing Yan, Nathaniel A. Bogie, and Teamrat A. Ghezzehei
Biogeosciences, 17, 6377–6392, https://doi.org/10.5194/bg-17-6377-2020, https://doi.org/10.5194/bg-17-6377-2020, 2020
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An uneven supply of water and nutrients in soils often drives how plants behave. We observed that plants extract all their required nutrients from dry soil patches in sufficient quantity, provided adequate water is available elsewhere in the root zone. Roots in nutrient-rich dry patches facilitate the nutrient acquisition by extensive growth, water release, and modifying water retention in their immediate environment. The findings are valuable in managing nutrient losses in agricultural systems.
Onur Kerimoglu, Yoana G. Voynova, Fatemeh Chegini, Holger Brix, Ulrich Callies, Richard Hofmeister, Knut Klingbeil, Corinna Schrum, and Justus E. E. van Beusekom
Biogeosciences, 17, 5097–5127, https://doi.org/10.5194/bg-17-5097-2020, https://doi.org/10.5194/bg-17-5097-2020, 2020
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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.
Amandine Erktan, Matthias C. Rillig, Andrea Carminati, Alexandre Jousset, and Stefan Scheu
Biogeosciences, 17, 4961–4980, https://doi.org/10.5194/bg-17-4961-2020, https://doi.org/10.5194/bg-17-4961-2020, 2020
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Soil aggregation is crucial for soil functioning. 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 saprotrophic fungi.
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.
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.
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.
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.
Daniel D. Richter, Sharon A. Billings, Peter M. Groffman, Eugene F. Kelly, Kathleen A. Lohse, William H. McDowell, Timothy S. White, Suzanne Anderson, Dennis D. Baldocchi, Steve Banwart, Susan Brantley, Jean J. Braun, Zachary S. Brecheisen, Charles W. Cook, Hilairy E. Hartnett, Sarah E. Hobbie, Jerome Gaillardet, Esteban Jobbagy, Hermann F. Jungkunst, Clare E. Kazanski, Jagdish Krishnaswamy, Daniel Markewitz, Katherine O'Neill, Clifford S. Riebe, Paul Schroeder, Christina Siebe, Whendee L. Silver, Aaron Thompson, Anne Verhoef, and Ganlin Zhang
Biogeosciences, 15, 4815–4832, https://doi.org/10.5194/bg-15-4815-2018, https://doi.org/10.5194/bg-15-4815-2018, 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.
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
Cited articles
Agawin, N. S. R., Duarte, C. M., and Agustí, S.: Nutrient and Temperature Control of the Contribution of Picoplankton to Phytoplankton Biomass and Production, Limnol. Oceanogr., 45, 591–600, 2000.
Agustí, S.: Viability and niche segregation of Prochlorococcus and Synechococcus cells across the Central Atlantic Ocean, Aquat. Microb. Ecol., 36, 53–59, https://doi.org/10.3354/ame036053, 2004.
Agustí, S. and Duarte, C. M.: Strong Seasonality in Phytoplankton Cell Lysis in the NW Mediterranean Littoral, Limnol. Oceanogr., 45, 940–947, 2000.
Agustí, S. and Duarte, C. M.: Addressing uncertainties in the assessment of phytoplankton lysis rates in the sea, Limnol. Oceanogr., 47, 921–924, 2002.
Agustí, S. and Sánchez, M. C.: Cell Viability in Natural Phytoplankton Communities Quantified by a Membrane Permeability Probe, Limnol. Oceanogr., 47, 818–828, 2002.
Agustí, S., Satta, M. P., Mura, M. P., and Benavent, E.: Dissolved Esterase Activity as a Tracer of Phytoplankton Lysis: Evidence of High Phytoplankton Lysis Rates in the Northwestern Mediterranean, Limnol. Oceanogr., 43, 1836–1849, 1998.
Agustí, S., Duarte, C. M., Vaqué, D., Hein, M., Gasol, J. M., and Vidal, M.: Food-web structure and elemental (C, N and P) fluxes in the eastern tropical North Atlantic, Deep Sea Res. II, 48, 2295–2321, https://doi.org/10.1016/S0967-0645(00)00179-X, 2001.
Alonso-González, I. J., Arístegui, J., Lee, C., and Calafat, A.: Regional and temporal variability of sinking organic matter in the subtropical northeast Atlantic Ocean: a biomarker diagnosis, Biogeosciences, 7, 2101–2115, https://doi.org/10.5194/bg-7-2101-2010, 2010.
Alonso-Laita, P. and Agustí, S.: Contrasting patterns of phytoplankton viability in the subtropical NE Atlantic Ocean. Aquat. Microb. Ecol., 43, 67–78, https://doi.org/10.3354/ame043067, 2006.
Arístegui, J. and Montero, M. F.: Temporal and spatial changes in plankton respiration and biomass in the Canary Islands region: the effect of mesoscale variability, J. Marine Syst., 54, 65–82, https://doi.org/10.1016/j.jmarsys.2004.07.004, 2005.
Arístegui, J., Tett, P., Hernández-Guerra, A., Basterretxea, G., Montero, M. F., Wild, K., Sangrá, P., Hernández-Leon, S., Canton, M., García-Braun, J. A., Pacheco, M., and Barton, E. D.: The influence of island-generated eddies on chlorophyll distribution: a study of mesoscale variation around Gran Canaria, Deep Sea Res. I, 44, 71–96, https://doi.org/10.1016/S0967-0637(96)00093-3, 1997.
Arístegui, J., Barton, E., Montero, M., García-Muñoz, M., and Escánez, J.: Organic carbon distribution and water column respiration in the NW Africa-Canaries Coastal Transition Zone, Aquat. Microb. Ecol., 33, 289–301, https://doi.org/10.3354/ame033289, 2003.
Azam, F., Fenchel, T., Field, J., Gray, J., Meyer, L., and Thingstad, F.: The ecological role of water column microbes in the sea, Mar. Ecol.-Prog. Ser., 10, 257–263, 1983.
Baltar, F., Aristegui, J., Gasol, J. M., Lekunberri, I., and Herndl, G. J.: Mesoscale eddies: hotspots of prokaryotic activity and differential community structure in the ocean, ISME J., 4, 975–988, 2010.
Barbesti, S., Citterio, S., Labra, M., Baroni, M. D., Neri, M. G., and Sgorbati, S.: Two and three-color fluorescence flow cytometric analysis of immunoidentified viable bacteria, Cytometry, 40, 214–218, 2000.
Barton, E. D., Arístegui, J., Tett, P., Cantón, M., García-Braun, J., Hernández-León, S., Nykjaer, L., Almeida, C., Almunia, J., Ballesteros, S., Basterretxea, G., Escánez, J., García-Weill, L., Hernández-Guerra, A., López-Laatzen, F., Molina, R., Montero, M. F., Navarro-Pérez, E., Rodríguez, J. M., van Lenning, K., Vélez, H., and Wild, K.: The transition zone of the Canary Current upwelling region, Prog. Oceanogr., 41, 455–504, https://doi.org/10.1016/S0079-6611(98)00023-8, 1998.
Basterretxea, G., Barton, E. D., Tett, P., Sangrá, P., Navarro-Perez, E., and Arístegui, J.: Eddy and deep chlorophyl maximum response to wind-shear in the lee of Gran Canaria, Deep Sea Res. I, 49, 1087–1101, https://doi.org/10.1016/S0967-0637(02)00009-2, 2002.
Benitez-Nelson, C. R. and McGillicuddy Jr., D. J.: Mesoscale physical–biological–biogeochemical linkages in the open ocean: An introduction to the results of the E-Flux and EDDIES programs, Deep Sea Res. II, 55, 1133–1138, https://doi.org/10.1016/j.dsr2.2008.03.001, 2008.
Berges, J. A. and Falkowski, P. G.: Physiological Stress and Cell Death in Marine Phytoplankton: Induction of Proteases in Response to Nitrogen or Light Limitation, Limnol. Oceanogr., 43, 129–135, 1998.
Bidigare, R. R., Benitez-Nelson, C., Leonard, C. L., Quay, P. D., Parsons, M. L., Foley, D. G., and Seki, M. P.: Influence of a cyclonic eddy on microheterotroph biomass and carbon export in the lee of Hawaii, Geophys. Res. Lett., 30, 1318, https://doi.org/10.1029/2002GL016393, 2003.
Boras, J. A., Sala, M. M., Baltar, F., Aristegui, J., Duarte, C. M., and Vaqué, D.: Effect of viruses and protists on bacteria in eddies of the Canary Current region (subtropical northeast Atlantic), Limnol. Oceanogr., 55, 885–898, 2010.
Bratbak, G.: Carbon flow in an experimental microbial ecosystem. Mar. Ecol.-Prog. Ser., 36, 267–276, 1987.
Bratbak, G. and Thingstad, T. F.: Phytoplankton-bacteria interactions: an apparent paradox? Analysis of a model system with both competition and commensalism, Mar. Ecol.-Prog. Ser., 25, 23–30, 1985.
Brussaard, C. P. D., Riegman, R., Noordeloos, A. A. M., Cadée, G. C., Witte, H., Kop, A. J., Nieuwland, G., Van Duyl, F. C., and Bak, R. P. M.: Effects of grazing, sedimentation and phytoplankton cell lysis on the structure of a coastal pelagic food web, Mar. Ecol.-Prog. Ser., 123, 259–271, 1995.
Carlson, C. and Ducklow, H.: Growth of bacterioplankton and consumption of dissolved organic carbon in the Sargasso Sea, Aquat. Microb. Ecol., 10, 69–85, https://doi.org/10.3354/ame010069, 1996.
Ewart, C. S., Meyers, M. K., Wallner, E. R., McGillicuddy Jr., D. J., and Carlson, C. A.: Microbial dynamics in cyclonic and anticyclonic mode-water eddies in the northwestern Sargasso Sea, Deep Sea Res. II, 55, 1334–1347, https://doi.org/10.1016/j.dsr2.2008.02.013, 2008.
Falcioni, T., Papa, S., and Gasol, J. M.: Evaluating the Flow-Cytometric Nucleic Acid Double-Staining Protocol in Realistic Situations of Planktonic Bacterial Death, Appl. Environ. Microb., 74, 1767–1779, https://doi.org/10.1128/AEM.01668-07, 2008.
Falkowski, P. G., Ziemann, D., Kolber, Z., and Bienfang, P. K.: Role of eddy pumping in enhancing primary production in the ocean, Nature, 352, 55–58, https://doi.org/10.1038/352055a0, 1991.
Garçon, V. C., Oschlies, A., Doney, S. C., McGillicuddy Jr., D. J., and Waniek, J.: The role of mesoscale variability on plankton dynamics in the North Atlantic, Deep Sea Res. II, 48, 2199–2226, https://doi.org/10.1016/S0967-0645(00)00183-1, 2001.
Gasol, J. M., Vázquez-Domínguez, E., Vaqué, D., Agustí, S., and Duarte, C. M.: Bacterial activity and diffusive nutrient supply in the oligotrophic Central Atlantic Ocean, Aquat. Microb. Ecol., 56, 1–12, https://doi.org/10.3354/ame01310, 2009.
González-Dávila, M., Santana-Casiano, J. M., de Armas, D., Escánez, J., and Suarez-Tangil, M.: The influence of island generated eddies on the carbon dioxide system, south of the Canary Islands, Mar. Chem., 99, 177–190, https://doi.org/10.1016/j.marchem.2005.11.004, 2006.
Grégori, G., Citterio, S., Ghiani, A., Labra, M., Sgorbati, S., Brown, S., and Denis, M.: Resolution of Viable and Membrane-Compromised Bacteria in Freshwater and Marine Waters Based on Analytical Flow Cytometry and Nucleic Acid Double Staining, Appl. Environ. Microb., 67, 4662–4670, https://doi.org/10.1128/AEM.67.10.4662-4670.2001, 2001.
Hansen, H. P. and Koroleff, F.: Determination of nutrients, in: Methods of seawater analysis, edited by: Grasshoff, K., Kremling, K., and Ehrhardt, M., Weinheim, Wiley-VCH Verlag, 159–228, 1999.
Jia, Y., Calil, P. H. R., Chassignet, E. P., Metzger, E. J., Potemra, J. T., Richards, K. J., and Wallcraft, A. J.: Generation of mesoscale eddies in the lee of the Hawaiian Islands, J. Geophys. Res., 116, C11009, https://doi.org/201110.1029/2011JC007305, 2011.
Jiménez, B., Sangrà, P., and Mason, E.: A numerical study of the relative importance of wind and topographic forcing on oceanic eddy shedding by tall, deep water islands, Ocean Model., 22, 146–157, 2008.
Kara, A. B., Rochford, P. A., and Hurlburt, H. E.: An optimal definition for ocean mixed layer depth, J. Geophys. Res., 105, 16803–16821, https://doi.org/200010.1029/2000JC900072, 2000.
Kérouel, R. and Aminot. A.: Fluorometric determination of ammonia in sea and estuarine waters by direct segmented flow analysis, Mar. Chem., 57, 265–275, 1997.
Kirchman, D. L., Suzuki, Y., Garside, C., and Ducklow, H. W.: High turnover rates of dissolved organic carbon during a spring phytoplankton bloom, Nature, 352, 612–614, https://doi.org/10.1038/352612a0, 1991.
Kirchman, D. L. and. Rich, J. H.: Regulation of Bacterial Growth Rates by Dissolved Organic Carbon and Temperature in the Equatorial Pacific Ocean, Microb. Ecol., 33, 11–20, https://doi.org/10.1007/s002489900003, 1997.
Kroer, N.: Bacterial Growth Efficiency on Natural Dissolved Organic Matter, Limnol. Oceanogr., 38, 1282–1290, 1993.
Lasternas, S., Agustí, S., and Duarte, C. M.: Phyto- and bacterioplankton abundance and viability and their relationship with phosphorus across the Mediterranean Sea, Aquat. Microb. Ecol., 60, 175–191, https://doi.org/10.3354/ame01421, 2010.
Legendre, L. and Le Fèvre, J.: Microbial food webs and the export of biogenic carbon in oceans, Aquat. Microb. Ecol., 9, 69–77, 1995.
Llabrés, M. and Agustí, S.: Picophytoplankton Cell Death Induced by UV Radiation: Evidence for Oceanic Atlantic Communities, Limnol. Oceanogr., 51, 21–29, 2006.
Marie, D., Simon, N., and Vaulot, D.: Phytoplankton cell counting by flow cytometry, Algal culturing techniques, 253–268, 2005.
Martin, A. P. and Richards, K. J.: Mechanisms for vertical nutrient transport within a North Atlantic mesoscale eddy, Deep Sea Res. II, 48, 757–773, https://doi.org/10.1016/S0967-0645(00)00096-5, 2001.
Martin, P., Lampitt, R. S., Jane Perry, M., Sanders, R., Lee, C., and D'Asaro, E.: Export and mesopelagic particle flux during a North Atlantic spring diatom bloom, Deep Sea Res. I, 58, 338–349, https://doi.org/10.1016/j.dsr.2011.01.006, 2011.
Martin-Jézéquel, V., Hildebrand, M., and Brzezinski, M. A.: Silicon metabolism in diatoms: Implications for growth, J. Phycol., 36, 821–840, https://doi.org/10.1046/j.1529-8817.2000.00019.x, 2003.
Mason, E., Colas, F., Molemaker, J., Shchepetkin, A. F., Troupin, C., McWilliams, J. C., and Sangrà, P.: Seasonal variability of the Canary Current: A numerical study. J. Geophys. Res., 116, C06001, https://doi.org/201110.1029/2010JC006665, 2011.
Mathis, J. T., Pickart, R. S., Hansell, D. A., Kadko, D., and Bates, N. R.: Eddy transport of organic carbon and nutrients from the Chukchi Shelf: Impact on the upper halocline of the western Arctic Ocean, J. Geophys. Res., 112, C05011, https://doi.org/10.1029/2006JC003899, 2007.
McGillicuddy Jr., D. J., Robinson, A. R., Siegel, D. A., Jannasch, H. W., Johnson, R., Dickey, T. D., McNeil, J., Michaels, A. F., and Knap, A. H.: Influence of mesoscale eddies on new production in the Sargasso Sea, Nature, 394, 263–266, 1998.
McGillicuddy Jr., D. J., Johnson, M., R., Siegel, D. A., Michaels, A. F., Bates, N. R., and Knap, A. H.: Mesoscale variations of biogeochemical properties in the Sargasso Sea, J. Geophys. Res., 104, 13381–13394, https://doi.org/199910.1029/1999JC900021, 1999.
McGillicuddy Jr., D. J., Anderson, L. A., Bates, N. R., Bibby, T., Buesseler, K. O., Carlson, C. A., Davis, C. S., Ewart, C., Falkowski, P. G., Goldthwait, S. A., Hansell, D. A., Jenkins, W. J., Johnson, R., Kosnyrev, V. K., Ledwell, J. R., Li, Q. P., Siegel, D. A., and Steinberg, D. K.: Eddy/Wind Interactions Stimulate Extraordinary Mid-Ocean Plankton Blooms, Science, 316, 1021–1026, https://doi.org/10.1126/science.1136256, 2007.
Michaels, A. F. and Silver, M. W.: Primary production, sinking fluxes and the microbial food web, Deep Sea Res. A, 35, 473–490, https://doi.org/10.1016/0198-0149(88)90126-4, 1988.
Morán, X. A. and Estrada, M.: Phytoplanktonic DOC and POC production in the Bransfield and Gerlache Straits as derived from kinetic experiments of 14C incorporation, Deep Sea Res. II, 49, 769–786, 2002.
Myklestad, S.: Production of carbohydrates by marine planktonic diatoms. II. Influence of the ratio in the growth medium on the assimilation ratio, growth rate, and production of cellular and extracellular carbohydrates by Chaetoceros affinis var. willei (Gran) Hustedt and Skeletonema costatum (Grev.) Cleve, J. Exp. Mar. Biol. Ecol., 29, 161–179, https://doi.org/10.1016/0022-0981(77)90046-6, 1977.
Norrman, B., Zweifel, U. L., Hopkinson, C. S., and Fry, B.: Production and utilization of dissolved organic carbon during an experimental diatom bloom, Limnol. Oceanogr., 40, 898–907, 1995.
Oschlies, A. and Garçon, V.: Eddy-induced enhancement of primary production in a model of the North Atlantic Ocean, Nature, 394, 266–269, 1998.
Owen, R. W.: Fronts and eddies in the sea: mechanisms, interactions and biological effects, in: Analysis of marine ecosystems, edited by: Longhurst, A. R., Academic Press, New York, 197–233, 1981.
Parsons, T. R., Maita, Y., and Lalli, C. M.: A manual of chemical and biological methods for seawater analysis, Pergamon Press, Oxford, 1984.
Piedeleu, M., Sangrà, P., Sánchez-Vidal, A., Fabrés, J., Gordo, C., and Calafat, A.: An observational study of oceanic eddy generation mechanisms by tall deep-water islands (Gran Canaria), Geophys. Res. Lett., 36, L14605 , https://doi.org/200910.1029/2008GL037010, 2009.
Platt, T., Rao, D. V. S., and Irwin, B.: Photosynthesis of picoplankton in the oligotrophic ocean, Nature, 301, 702–704, https://doi.org/10.1038/301702a0, 1983.
Pomeroy, L. R.: The ocean's foodweb: a changing paradigm, Bioscience, 24, 499–504, 1974.
Proctor, L. M. and Fuhram, J. A.: Roles of viral infection in organic particle flux, Marine, 69, 133–142, 1991.
Rodríguez, J., Tintore, J., Allen, J. T., Blanco, J. M., Gomis, D., Reul, A., Ruiz, J., Rodríguez, V., Echevarria, F., and Jiménez-Gomez, F.: Mesoscale vertical motion and the size structure of phytoplankton in the ocean, Nature, 410, 360–363, https://doi.org/10.1038/35066560, 2001.
Rodríguez, F., Varela, M., Fernández, E., and Zapata, M.: Phytoplankton and pigment distributions in an anticyclonic slope water oceanic eddy (SWODDY) in the southern Bay of Biscay, Mar. Biol., 143, 995–1011, https://doi.org/10.1007/s00227-003-1129-1, 2003.
Sangrà, P., Pelegri, J. L., Hernández-Guerra, A., Arregui, I., Martin, J. M., Marrero-Diaz, A., Martinez, A., Ratsimandresy, A. W., and Rodríguez-Santana, A.: Life history of an anticyclonic eddy, J. Geophys. Res., 110, C03021, https://doi.org/10.1029/2004JC002526, 2005.
Sangrà, P., Auladell, M., Marrero-Díaz, A., Pelegrí, J. L., Fraile-Nuez, E., Rodríguez-Santana, A., Martín, J. M., Mason, E., and Hernández-Guerra, A.: On the nature of oceanic eddies shed by the Island of Gran Canaria, Deep Sea Res. I, 54, 687–709, https://doi.org/10.1016/j.dsr.2007.02.004, 2007.
Sangrà, P., Pascual, A., Rodríguez-Santana, A., Machín, F., Mason, E., McWilliams, J. C., Pelegrí, J. L., Dong, C., Rubio, A., Arístegui, J., Marrero-Díaz, Á., Hernández-Guerra, A., Martínez-Marrero, A., and Auladell, M.: The Canary Eddy Corridor: A major pathway for long-lived eddies in the subtropical North Atlantic, Deep Sea Res. I, 56, 2100–2114, https://doi.org/10.1016/j.dsr.2009.08.008, 2009.
Siegel, S. and Castellan, N. J.: Non-parametric statistics for the behavioural sciences, McGraw Hill Company, New York, 1988.
Siegel, D. A, McGillicuddy, D. J., and Fields, E. A.: Mesoscale eddies, satellite altimetry, and new production in the Sargasso Sea, J. Geophys. Res., 104, 13359–13379, 1999.
Smayda, T. J. and Reynolds, C. S.: Community assembly in marine phytoplankton: Application of recent models to harmful dinoflagellate blooms, J. Plankton Res., 23, 447–461, https://doi.org/10.1093/plankt/23.5.447, 2001.
Smetacek, V. S.: Role of sinking in diatom life-history cycles: ecological, evolutionary and geological significance, Mar. Biol., 84, 239–251, https://doi.org/10.1007/BF00392493, 1985.
Smetacek, V. S.: Diatoms and the ocean carbon cycle, Protist, 250, 25–32, 1999.
Smith, C. L., Richards, K. J., and Fasham, M. J. R.: The impact of mesoscale eddies on plankton dynamics in the upper ocean, Deep Sea Res. I, 43, 1807–1832, https://doi.org/10.1016/S0967-0637(96)00035-0, 1996.
Steemann-Nielsen, E. J.: The use of radioactive carbon (l4C) for measuring organic production in the sea, Cons. Perm. Int. Explor. Mer., 18, 117–140, 1952.
Tarran, G. A., Zubkov, M. V., Sleigh, M. A., Burkill, P. H., and Yallop, M.: Microbial community structure and standing stocks in the NE Atlantic in June and July of 1996, Deep Sea Res. II, 48, 963–985, https://doi.org/10.1016/S0967-0645(00)00104-1, 2001.
Thingstad, T. F., Zweifel, U. L., and Rassoulzadegan, F.: P limitation of heterotrophic bacteria and phytoplankton in the Northwest Mediterranean. Limnol. Oceanogr., 43, 88–94, 1998.
Vaillancourt, R. D., Marra, J., Seki, M. P., Parsons, M. L., and Bidigare, R. R.: Impact of a cyclonic eddy on phytoplankton community structure and photosynthetic competency in the subtropical North Pacific Ocean, Deep Sea Res. I, 50, 829–847, https://doi.org/10.1016/S0967-0637(03)00059-1, 2003.
Zubkov, M. V., Mary, I., Woodward, E. M. S., Warwick, P. E., Fuchs, B. M., Scanlan, D. J., and Burkill, P. H.: Microbial control of phosphate in the nutrient-depleted North Atlantic subtropical gyre, Environ. Microbiol., 9, 2079–2089, https://doi.org/10.1111/j.1462-2920.2007.01324.x, 2007.
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