Articles | Volume 17, issue 4
https://doi.org/10.5194/bg-17-901-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-901-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Feb 2020
Research article |
| 21 Feb 2020
| 21 Feb 2020
Microtopography is a fundamental organizing structure of vegetation and soil chemistry in black ash wetlands
GéHCO, Université de Tours, Tours, France
RiverLy, INRAE, Lyon, France
Daniel L. McLaughlin
Department of Forest Resources and Environmental Conservation, Virginia
Tech, Blacksburg, Virginia 24060, USA
Robert A. Slesak
Minnesota Forest Resources Council, St. Paul, Minnesota 55108, USA
Atticus Stovall
NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
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We developed one of the largest stream temperature databases to calculate a simple, ecologically relevant metric – the thermal peak – that captures the magnitude of summer thermal extremes. Using statistical models, we extrapolated the thermal peak to nearly every stream in France, finding the hottest thermal peaks along large rivers without forested riparian zones and groundwater inputs. Air temperature was a poor proxy for the thermal peak, highlighting the need to grow monitoring networks.
Hanieh Seyedhashemi, Jean-Philippe Vidal, Jacob S. Diamond, Dominique Thiéry, Céline Monteil, Frédéric Hendrickx, Anthony Maire, and Florentina Moatar
Hydrol. Earth Syst. Sci., 26, 2583–2603, https://doi.org/10.5194/hess-26-2583-2022, https://doi.org/10.5194/hess-26-2583-2022, 2022
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Stream temperature appears to be increasing globally, but its rate remains poorly constrained due to a paucity of long-term data. Using a thermal model, this study provides a large-scale understanding of the evolution of stream temperature over a long period (1963–2019). This research highlights that air temperature and streamflow can exert joint influence on stream temperature trends, and riparian shading in small mountainous streams may mitigate warming in stream temperatures.
Jacob S. Diamond, Daniel L. McLaughlin, Robert A. Slesak, and Atticus Stovall
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We found evidence for spatial patterning of soil elevation in forested wetlands that was well explained by hydrology. The patterns that we found were strongest at wetter sites, and were weakest at drier sites. When a site was wet, soil elevations typically only belonged to two groups: tall "hummocks" and low "hollows. The tall, hummock groups were spaced equally apart from each other and were a similar size. We believe this is evidence for a biota–hydrology feedback that creates hummocks.
André Chandesris, Kris Van Looy, Jacob S. Diamond, and Yves Souchon
Hydrol. Earth Syst. Sci., 23, 4509–4525, https://doi.org/10.5194/hess-23-4509-2019, https://doi.org/10.5194/hess-23-4509-2019, 2019
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We found that small dams in rivers alter the thermal regimes of downstream waters in two distinct ways: either only the downstream daily minimum temperatures increase, or both the downstream daily minimum and maximum temperatures increase. We further show that only two physical dam characteristics can explain this difference in temperature response: (1) residence time, and (2) surface area. These results may help managers prioritize efforts to restore the fragmented thermalscapes of rivers.
Aurélien Beaufort, Jacob S. Diamond, Eric Sauquet, and Florentina Moatar
Hydrol. Earth Syst. Sci., 26, 3477–3495, https://doi.org/10.5194/hess-26-3477-2022, https://doi.org/10.5194/hess-26-3477-2022, 2022
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We developed one of the largest stream temperature databases to calculate a simple, ecologically relevant metric – the thermal peak – that captures the magnitude of summer thermal extremes. Using statistical models, we extrapolated the thermal peak to nearly every stream in France, finding the hottest thermal peaks along large rivers without forested riparian zones and groundwater inputs. Air temperature was a poor proxy for the thermal peak, highlighting the need to grow monitoring networks.
Hanieh Seyedhashemi, Jean-Philippe Vidal, Jacob S. Diamond, Dominique Thiéry, Céline Monteil, Frédéric Hendrickx, Anthony Maire, and Florentina Moatar
Hydrol. Earth Syst. Sci., 26, 2583–2603, https://doi.org/10.5194/hess-26-2583-2022, https://doi.org/10.5194/hess-26-2583-2022, 2022
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Stream temperature appears to be increasing globally, but its rate remains poorly constrained due to a paucity of long-term data. Using a thermal model, this study provides a large-scale understanding of the evolution of stream temperature over a long period (1963–2019). This research highlights that air temperature and streamflow can exert joint influence on stream temperature trends, and riparian shading in small mountainous streams may mitigate warming in stream temperatures.
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Hydrol. Earth Syst. Sci., 24, 1859–1870, https://doi.org/10.5194/hess-24-1859-2020, https://doi.org/10.5194/hess-24-1859-2020, 2020
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Interception is the storage and subsequent evaporation of rain by vegetation and surface litter. Quantifying interception is critical for understanding the water balance, but it can be difficult and costly to measure. We developed an approach to estimate interception using automated soil moisture measurements during rainfall events. Results suggest that interception can be estimated using soil moisture data, leading to potential cost savings and logistical advantages over conventional methods.
Jacob S. Diamond, Daniel L. McLaughlin, Robert A. Slesak, and Atticus Stovall
Hydrol. Earth Syst. Sci., 23, 5069–5088, https://doi.org/10.5194/hess-23-5069-2019, https://doi.org/10.5194/hess-23-5069-2019, 2019
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We found evidence for spatial patterning of soil elevation in forested wetlands that was well explained by hydrology. The patterns that we found were strongest at wetter sites, and were weakest at drier sites. When a site was wet, soil elevations typically only belonged to two groups: tall "hummocks" and low "hollows. The tall, hummock groups were spaced equally apart from each other and were a similar size. We believe this is evidence for a biota–hydrology feedback that creates hummocks.
André Chandesris, Kris Van Looy, Jacob S. Diamond, and Yves Souchon
Hydrol. Earth Syst. Sci., 23, 4509–4525, https://doi.org/10.5194/hess-23-4509-2019, https://doi.org/10.5194/hess-23-4509-2019, 2019
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We found that small dams in rivers alter the thermal regimes of downstream waters in two distinct ways: either only the downstream daily minimum temperatures increase, or both the downstream daily minimum and maximum temperatures increase. We further show that only two physical dam characteristics can explain this difference in temperature response: (1) residence time, and (2) surface area. These results may help managers prioritize efforts to restore the fragmented thermalscapes of rivers.
Kimberly J. Van Meter, Michael Steiff, Daniel L. McLaughlin, and Nandita B. Basu
Hydrol. Earth Syst. Sci., 20, 2629–2647, https://doi.org/10.5194/hess-20-2629-2016, https://doi.org/10.5194/hess-20-2629-2016, 2016
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Although village-scale rainwater harvesting (RWH) structures have been used for millennia in India, many of these structures have fallen into disrepair due to increased dependence on groundwater. This dependence has contributed to declines in groundwater resources, and in turn to efforts to revive older RWH systems. In the present study, we use field data to quantify water fluxes in a cascade of irrigation tanks to better our understanding of the impact of RWH systems on the water balance in con
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Biogeosciences, 19, 1571–1585, https://doi.org/10.5194/bg-19-1571-2022, https://doi.org/10.5194/bg-19-1571-2022, 2022
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Hao Tang, Susanne Liebner, Svenja Reents, Stefanie Nolte, Kai Jensen, Fabian Horn, and Peter Mueller
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Naima Iram, Emad Kavehei, Damien T. Maher, Stuart E. Bunn, Mehran Rezaei Rashti, Bahareh Shahrabi Farahani, and Maria Fernanda Adame
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Biogeosciences, 18, 4681–4704, https://doi.org/10.5194/bg-18-4681-2021, https://doi.org/10.5194/bg-18-4681-2021, 2021
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Timea Katona, Benjamin Silas Gilfedder, Sven Frei, Matthias Bücker, and Adrian Flores-Orozco
Biogeosciences, 18, 4039–4058, https://doi.org/10.5194/bg-18-4039-2021, https://doi.org/10.5194/bg-18-4039-2021, 2021
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Jurek Müller and Fortunat Joos
Biogeosciences, 18, 3657–3687, https://doi.org/10.5194/bg-18-3657-2021, https://doi.org/10.5194/bg-18-3657-2021, 2021
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Lianlian Zhu, Zhengmiao Deng, Yonghong Xie, Xu Li, Feng Li, Xinsheng Chen, Yeai Zou, Chengyi Zhang, and Wei Wang
Biogeosciences, 18, 1–11, https://doi.org/10.5194/bg-18-1-2021, https://doi.org/10.5194/bg-18-1-2021, 2021
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We conducted a Carex brevicuspis leaf litter input experiment to clarify the intrinsic factors controlling litter decomposition and quantify its contribution to the soil organic carbon pool at different water levels. Our results revealed that the water level in natural wetlands influenced litter decomposition mainly by leaching and microbial activity, by extension, and affected the wetland surface carbon pool.
Robert J. Parker, Chris Wilson, A. Anthony Bloom, Edward Comyn-Platt, Garry Hayman, Joe McNorton, Hartmut Boesch, and Martyn P. Chipperfield
Biogeosciences, 17, 5669–5691, https://doi.org/10.5194/bg-17-5669-2020, https://doi.org/10.5194/bg-17-5669-2020, 2020
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Wetlands contribute the largest uncertainty to the atmospheric methane budget. WetCHARTs is a simple, data-driven model that estimates wetland emissions using observations of precipitation and temperature. We perform the first detailed evaluation of WetCHARTs against satellite data and find it performs well in reproducing the observed wetland methane seasonal cycle for the majority of wetland regions. In regions where it performs poorly, we highlight incorrect wetland extent as a key reason.
Jurek Müller and Fortunat Joos
Biogeosciences, 17, 5285–5308, https://doi.org/10.5194/bg-17-5285-2020, https://doi.org/10.5194/bg-17-5285-2020, 2020
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We present an in-depth model analysis of transient peatland area and carbon dynamics over the last 22 000 years. Our novel results show that the consideration of both gross positive and negative area changes are necessary to understand the transient evolution of peatlands and their net effect on atmospheric carbon. The study includes the attributions to drivers through factorial simulations, assessments of uncertainty from climate forcing, and determination of the global net carbon balance.
Lilli Zeh, Marie Theresa Igel, Judith Schellekens, Juul Limpens, Luca Bragazza, and Karsten Kalbitz
Biogeosciences, 17, 4797–4813, https://doi.org/10.5194/bg-17-4797-2020, https://doi.org/10.5194/bg-17-4797-2020, 2020
Jérémy Guilhen, Ahmad Al Bitar, Sabine Sauvage, Marie Parrens, Jean-Michel Martinez, Gwenael Abril, Patricia Moreira-Turcq, and José-Miguel Sánchez-Pérez
Biogeosciences, 17, 4297–4311, https://doi.org/10.5194/bg-17-4297-2020, https://doi.org/10.5194/bg-17-4297-2020, 2020
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The quantity of greenhouse gases (GHGs) released to the atmosphere by human industries and agriculture, such as carbon dioxide (CO2) and nitrous oxide (N2O), has been constantly increasing for the last few decades.
This work develops a methodology which makes consistent both satellite observations and modelling of the Amazon basin to identify and quantify the role of wetlands in GHG emissions. We showed that these areas produce non-negligible emissions and are linked to land use.
Thomas Rosset, Stéphane Binet, Jean-Marc Antoine, Emilie Lerigoleur, François Rigal, and Laure Gandois
Biogeosciences, 17, 3705–3722, https://doi.org/10.5194/bg-17-3705-2020, https://doi.org/10.5194/bg-17-3705-2020, 2020
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Peatlands export a large amount of DOC through inland waters. This study aims at identifying the mechanisms controlling the DOC concentration at the outlet of two mountainous peatlands in the French Pyrenees. Peat water temperature and water table dynamics are shown to drive seasonal- and event-scale DOC concentration variation. According to water recession times, peatlands appear as complexes of different hydrological and biogeochemical units supplying inland waters at different rates.
David Holl, Eva-Maria Pfeiffer, and Lars Kutzbach
Biogeosciences, 17, 2853–2874, https://doi.org/10.5194/bg-17-2853-2020, https://doi.org/10.5194/bg-17-2853-2020, 2020
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We measured greenhouse gas (GHG) fluxes at a bog site in northwestern Germany that has been heavily degraded by peat mining. During the 2-year investigation period, half of the area was still being mined, whereas the remaining half had been rewetted shortly before. We could therefore estimate the impact of rewetting on GHG flux dynamics. Rewetting had a considerable effect on the annual GHG balance and led to increased (up to 84 %) methane and decreased (up to 40 %) carbon dioxide release.
Terhi Riutta, Aino Korrensalo, Anna M. Laine, Jukka Laine, and Eeva-Stiina Tuittila
Biogeosciences, 17, 727–740, https://doi.org/10.5194/bg-17-727-2020, https://doi.org/10.5194/bg-17-727-2020, 2020
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We studied the role of plant species groups in peatland methane fluxes under natural conditions and lowered water level. At a natural water level, sedges and mosses increased the fluxes. At a lower water level, the impact of plant groups on the fluxes was small. Only at a high water level did vegetation regulate the fluxes. The results are relevant for assessing peatland methane fluxes in a changing climate, as peatland water level and vegetation are predicted to change.
M. Graham Clark, Elyn R. Humphreys, and Sean K. Carey
Biogeosciences, 17, 667–682, https://doi.org/10.5194/bg-17-667-2020, https://doi.org/10.5194/bg-17-667-2020, 2020
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Natural and restored wetlands typically emit methane to the atmosphere. However, we found that a wetland constructed after oil sand mining in boreal Canada using organic soils from local peatlands had negligible emissions of methane in its first 3 years. Methane production was likely suppressed due to an abundance of alternate inorganic electron acceptors. Methane emissions may increase in the future if the alternate electron acceptors continue to decrease.
Hendrik Reuter, Julia Gensel, Marcus Elvert, and Dominik Zak
Biogeosciences, 17, 499–514, https://doi.org/10.5194/bg-17-499-2020, https://doi.org/10.5194/bg-17-499-2020, 2020
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Using infrared spectroscopy, we developed a routine to disentangle microbial nitrogen (N) and plant N in decomposed litter. In a decomposition experiment in three wetland soils, this routine revealed preferential protein depolymerization as a decomposition-site-dependent parameter, unaffected by variations in initial litter N content. In Sphagnum peat, preferential protein depolymerization led to a N depletion of still-unprocessed litter tissue, i.e., a gradual loss of litter quality.
Kevan J. Minick, Bhaskar Mitra, Asko Noormets, and John S. King
Biogeosciences, 16, 4671–4686, https://doi.org/10.5194/bg-16-4671-2019, https://doi.org/10.5194/bg-16-4671-2019, 2019
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Sea level rise alters hydrology and vegetation in coastal wetlands. We studied effects of freshwater, saltwater, and wood on soil microbial activity in a freshwater forested wetland. Saltwater reduced CO2/CH4 production compared to freshwater, suggesting large changes in greenhouse gas production and microbial activity are possible due to saltwater intrusion into freshwater wetlands but that the availability of C in the form of dead wood (as forests transition to marsh) may alter the magnitude.
Jyrki Jauhiainen, Jukka Alm, Brynhildur Bjarnadottir, Ingeborg Callesen, Jesper R. Christiansen, Nicholas Clarke, Lise Dalsgaard, Hongxing He, Sabine Jordan, Vaiva Kazanavičiūtė, Leif Klemedtsson, Ari Lauren, Andis Lazdins, Aleksi Lehtonen, Annalea Lohila, Ainars Lupikis, Ülo Mander, Kari Minkkinen, Åsa Kasimir, Mats Olsson, Paavo Ojanen, Hlynur Óskarsson, Bjarni D. Sigurdsson, Gunnhild Søgaard, Kaido Soosaar, Lars Vesterdal, and Raija Laiho
Biogeosciences, 16, 4687–4703, https://doi.org/10.5194/bg-16-4687-2019, https://doi.org/10.5194/bg-16-4687-2019, 2019
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We collated peer-reviewed publications presenting GHG flux data for drained organic forest soils in boreal and temperate climate zones, focusing on data that have been used, or have the potential to be used, for estimating net annual soil GHG emission/removals. We evaluated the methods in data collection and identified major gaps in background/environmental data. Based on these, we developed suggestions for future GHG data collection to increase data applicability in syntheses and inventories.
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
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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.
Ward Swinnen, Nils Broothaerts, and Gert Verstraeten
Biogeosciences, 16, 3977–3996, https://doi.org/10.5194/bg-16-3977-2019, https://doi.org/10.5194/bg-16-3977-2019, 2019
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In this study, a new model is presented, which was specifically designed to study the development and carbon storage of blanket peatlands since the last ice age. In the past, two main processes (declining forest cover and rising temperatures) have been proposed as drivers of blanket peatland development on the British Isles. The simulations performed in this study support the temperature hypothesis for the blanket peatlands in the Cairngorms Mountains of central Scotland.
David Holl, Verónica Pancotto, Adrian Heger, Sergio Jose Camargo, and Lars Kutzbach
Biogeosciences, 16, 3397–3423, https://doi.org/10.5194/bg-16-3397-2019, https://doi.org/10.5194/bg-16-3397-2019, 2019
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We present 2 years of eddy covariance carbon dioxide flux data from two Southern Hemisphere peatlands on Tierra del Fuego. One of the investigated sites is a type of bog exclusive to the Southern Hemisphere, which is dominated by vascular, cushion-forming plants and is particularly understudied. One result of this study is that these cushion bogs apparently are highly productive in comparison to Northern and Southern Hemisphere moss-dominated bogs.
Liudmila S. Shirokova, Artem V. Chupakov, Svetlana A. Zabelina, Natalia V. Neverova, Dahedrey Payandi-Rolland, Carole Causserand, Jan Karlsson, and Oleg S. Pokrovsky
Biogeosciences, 16, 2511–2526, https://doi.org/10.5194/bg-16-2511-2019, https://doi.org/10.5194/bg-16-2511-2019, 2019
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Regardless of the size and landscape context of surface water in frozen peatland in NE Europe, the bio- and photo-degradability of dissolved organic matter (DOM) over a 1-month incubation across a range of temperatures was below 10 %. We challenge the paradigm of dominance of photolysis and biodegradation in DOM processing in surface waters from frozen peatland, and we hypothesize peat pore-water DOM degradation and respiration of sediments to be the main drivers of CO2 emission in this region.
Elisa Männistö, Aino Korrensalo, Pavel Alekseychik, Ivan Mammarella, Olli Peltola, Timo Vesala, and Eeva-Stiina Tuittila
Biogeosciences, 16, 2409–2421, https://doi.org/10.5194/bg-16-2409-2019, https://doi.org/10.5194/bg-16-2409-2019, 2019
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We studied methane emitted as episodic bubble release (ebullition) from water and bare peat surfaces of a boreal bog over three years. There was more ebullition from water than from bare peat surfaces, and it was controlled by peat temperature, water level, atmospheric pressure and the weekly temperature sum. However, the contribution of methane bubbles to the total ecosystem methane emission was small. This new information can be used to improve process models of peatland methane dynamics.
Franziska Koebsch, Matthias Winkel, Susanne Liebner, Bo Liu, Julia Westphal, Iris Schmiedinger, Alejandro Spitzy, Matthias Gehre, Gerald Jurasinski, Stefan Köhler, Viktoria Unger, Marian Koch, Torsten Sachs, and Michael E. Böttcher
Biogeosciences, 16, 1937–1953, https://doi.org/10.5194/bg-16-1937-2019, https://doi.org/10.5194/bg-16-1937-2019, 2019
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In natural coastal wetlands, high supplies of marine sulfate suppress methane production. We found these natural methane suppression mechanisms to be suspended by humane interference in a brackish wetland. Here, diking and freshwater rewetting had caused an efficient depletion of the sulfate reservoir and opened up favorable conditions for an intensive methane production. Our results demonstrate how human disturbance can turn coastal wetlands into distinct sources of the greenhouse gas methane.
Luke C. Jeffrey, Damien T. Maher, Scott G. Johnston, Kylie Maguire, Andrew D. L. Steven, and Douglas R. Tait
Biogeosciences, 16, 1799–1815, https://doi.org/10.5194/bg-16-1799-2019, https://doi.org/10.5194/bg-16-1799-2019, 2019
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Wetlands represent the largest natural source of methane (CH4), so understanding CH4 drivers is important for management and climate models. We compared several CH4 pathways of a remediated subtropical Australian wetland. We found permanently inundated sites emitted more CH4 than seasonally inundated sites and that the soil properties of each site corresponded to CH4 emissions. This suggests that selective wetland remediation of favourable soil types may help to mitigate unwanted CH4 emissions.
Ryo Shingubara, Atsuko Sugimoto, Jun Murase, Go Iwahana, Shunsuke Tei, Maochang Liang, Shinya Takano, Tomoki Morozumi, and Trofim C. Maximov
Biogeosciences, 16, 755–768, https://doi.org/10.5194/bg-16-755-2019, https://doi.org/10.5194/bg-16-755-2019, 2019
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(1) Wetting event with extreme precipitation increased methane emission from wetland, especially two summers later, despite the decline in water level after the wetting. (2) Isotopic compositions of methane in soil pore water suggested enhancement of production and less significance of oxidation in the following two summers after the wetting event. (3) Duration of water saturation in the active layer may be important for predicting methane emission after a wetting event in permafrost ecosystems.
Wiebke Münchberger, Klaus-Holger Knorr, Christian Blodau, Verónica A. Pancotto, and Till Kleinebecker
Biogeosciences, 16, 541–559, https://doi.org/10.5194/bg-16-541-2019, https://doi.org/10.5194/bg-16-541-2019, 2019
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Processes governing CH4 dynamics have been scarcely studied in southern hemispheric bogs. These can be dominated by cushion-forming plants with deep and dense roots suppressing emissions. Here we demonstrate how the spatial distribution of root activity drives a pronounced pattern of CH4 emissions, likewise also possible in densely rooted northern bogs. We conclude that presence of cushion vegetation as a proxy for negligible CH4 emissions from cushion bogs needs to be interpreted with caution.
Sarah Cook, Mick J. Whelan, Chris D. Evans, Vincent Gauci, Mike Peacock, Mark H. Garnett, Lip Khoon Kho, Yit Arn Teh, and Susan E. Page
Biogeosciences, 15, 7435–7450, https://doi.org/10.5194/bg-15-7435-2018, https://doi.org/10.5194/bg-15-7435-2018, 2018
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This paper presents the first comprehensive assessment of fluvial organic carbon loss from oil palm plantations on tropical peat: a carbon loss pathway previously unaccounted for from carbon budgets. Carbon in the water draining four plantations in Sarawak was monitored across a 1-year period. Greater fluvial carbon losses were linked to sites with lower water tables. These data will be used to complete the carbon budget from these ecosystems and assess the full impact of this land conversion.
Ariane Arias-Ortiz, Pere Masqué, Jordi Garcia-Orellana, Oscar Serrano, Inés Mazarrasa, Núria Marbà, Catherine E. Lovelock, Paul S. Lavery, and Carlos M. Duarte
Biogeosciences, 15, 6791–6818, https://doi.org/10.5194/bg-15-6791-2018, https://doi.org/10.5194/bg-15-6791-2018, 2018
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Efforts to include tidal marsh, mangrove and seagrass ecosystems in existing carbon mitigation strategies are limited by a lack of estimates of carbon accumulation rates (CARs). We discuss the use of 210Pb dating to determine CARs in these habitats, which are often composed of heterogeneous sediments and affected by sedimentary processes. Results show that obtaining reliable geochronologies in these systems is ambitious, but estimates of mean 100-year CARs are mostly secure within 20 % error.
Danielle D. Radu and Tim P. Duval
Biogeosciences, 15, 3937–3951, https://doi.org/10.5194/bg-15-3937-2018, https://doi.org/10.5194/bg-15-3937-2018, 2018
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Climate change can shift rainfall into fewer, more intense events with longer dry periods, leading to changes in peatland hydrology and carbon cycling. We manipulated rain events over three peatland plant types (moss, sedge, and shrub). We found increasing regime intensity led to drier surface soils and deeper water tables, reducing plant carbon uptake. Mosses became sources of CO2 after >3 consecutive dry days. This study shows peatlands may become smaller sinks for carbon due to rain changes.
Peter Mueller, Lisa M. Schile-Beers, Thomas J. Mozdzer, Gail L. Chmura, Thomas Dinter, Yakov Kuzyakov, Alma V. de Groot, Peter Esselink, Christian Smit, Andrea D'Alpaos, Carles Ibáñez, Magdalena Lazarus, Urs Neumeier, Beverly J. Johnson, Andrew H. Baldwin, Stephanie A. Yarwood, Diana I. Montemayor, Zaichao Yang, Jihua Wu, Kai Jensen, and Stefanie Nolte
Biogeosciences, 15, 3189–3202, https://doi.org/10.5194/bg-15-3189-2018, https://doi.org/10.5194/bg-15-3189-2018, 2018
Karel Castro-Morales, Thomas Kleinen, Sonja Kaiser, Sönke Zaehle, Fanny Kittler, Min Jung Kwon, Christian Beer, and Mathias Göckede
Biogeosciences, 15, 2691–2722, https://doi.org/10.5194/bg-15-2691-2018, https://doi.org/10.5194/bg-15-2691-2018, 2018
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We present year-round methane emissions from wetlands in Northeast Siberia that were simulated with a land surface model. Ground-based flux measurements from the same area were used for evaluation of the model results, finding a best agreement with the observations in the summertime emissions that take place in this region predominantly through plants. During winter, methane emissions through the snow contribute 4 % of the total annual methane budget, but these are still underestimated.
Aino Korrensalo, Elisa Männistö, Pavel Alekseychik, Ivan Mammarella, Janne Rinne, Timo Vesala, and Eeva-Stiina Tuittila
Biogeosciences, 15, 1749–1761, https://doi.org/10.5194/bg-15-1749-2018, https://doi.org/10.5194/bg-15-1749-2018, 2018
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We measured methane fluxes of a boreal bog from six different plant community types in 2012–2014. We found only little variation in methane fluxes among plant community types. Peat temperature as well as both leaf area of plant species with air channels and of all vegetation are important factors controlling the fluxes. We also detected negative net fluxes indicating methane consumption each year. Our results can be used to improve the models of peatland methane dynamics under climate change.
Magnus Gålfalk, Martin Karlson, Patrick Crill, Philippe Bousquet, and David Bastviken
Biogeosciences, 15, 1549–1557, https://doi.org/10.5194/bg-15-1549-2018, https://doi.org/10.5194/bg-15-1549-2018, 2018
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We describe a quick in situ method for mapping ground surface cover, calculating areas of each surface type in a 10 x 10 m plot for each measurement. The method is robust, weather-independent, easily carried out, and uses wide-field imaging with a standard remote-controlled camera mounted on a very long extendible monopod from a height of 3–4.5 m. The method enables collection of detailed field reference data, critical in many remote sensing applications, such as wetland mapping.
Cited articles
Bates, D., Maechler, M., Bolker, B., and Walker, S.: Fitting Linear
Mixed-Effects Models Using lme4, J. Stat. Softw., 67,
1–48, https://doi.org/10.18637/jss.v067.i01, 2015.
Beatty, S. W.: Influence of Microtopography and Canopy Species on Spatial
Patterns of Forest Understory Plants, Ecology, 65, 1406–1419, 1984.
Belyea, L. R. and Clymo, R. S.: Feedback control of the rate of peat formation,
P. Roy. Soc. B-Biol. Sci., 268, 1315–1321, 2001.
Bledsoe, B. P. and Shear, T. H.: Vegetation along hydrologic and edaphic
gradients in a North Carolina coastal plain creek bottom and implications
for restoration, Wetlands, 20, 126–147, 2000.
Bolker, B. M., Brooks, M. E., Clark, C. J., Geange, S. W., Poulsen, J. R.,
Stevens, M. H. H., and White, J. S. S.: Generalized linear mixed models: a
practical guide for ecology and evolution, Trends Ecol. Evol.,
24, 127–135, 2009.
Bruland, G. L. and Richardson, C. J.: Hydrologic, edaphic, and vegetative
responses to microtopographic reestablishment in a restored wetland,
Restor. Ecol., 13, 515–523, 2005.
Bubier, J. L., Moore, T. R., and Crosby, G.: Fine-scale vegetation distribution
in a cool temperate peatland, Botany, 84, 910–923, 2006.
Cáceres, M. D.: How to use the indicspecies package (ver. 1.7. 1), R Proj,
29, available at: https://cran.r-project.org/web/packages/indicspecies/vignettes/indicspeciesTutorial.pdf (last access: 19 February 2020) 2013.
Cáceres, M. D. and Legendre, P.: Associations between species and groups
of sites: indices and statistical inference, Ecology, 90, 3566–3574,
2009.
Cantelmo Jr., A. J. and Ehrenfeld, J. G.: Effects of microtopography on
mycorrhizal infection in Atlantic white cedar (Chamaecyparis thyoides (L.)
Mills.), Mycorrhiza, 8, 175–180, 1999.
Casey, S. T., Cohen, M. J., Acharya, S., Kaplan, D. A., and Jawitz, J. W.: Hydrologic controls on aperiodic spatial organization of the ridge–slough patterned landscape, Hydrol. Earth Syst. Sci., 20, 4457–4467, https://doi.org/10.5194/hess-20-4457-2016, 2016.
Courtwright, J. and Findlay, S. E. G.: Effects of microtopography on
hydrology, physicochemistry, and vegetation in a tidal swamp of the Hudson
River, Wetlands, 31, 239–249, 2011.
D'Amato, A., Palik, B., Slesak, R., Edge, G., Matula, C., and Bronson, D.:
Evaluating Adaptive Management Options for Black Ash Forests in the Face of
Emerald Ash Borer Invasion, Forests, 9, 348, https://doi.org/10.3390/f9060348, 2018.
DeLaune, R. D. and Reddy, K. R.: Biogeochemistry of Wetlands: Science and
Applications, p. 590, CRC press, Boca Raton FL, 2008.
Diamond, J. S., McLaughlin, D. L., Slesak, R. A., and Stovall, A.: Pattern and structure of microtopography implies autogenic origins in forested wetlands, Hydrol. Earth Syst. Sci., 23, 5069–5088, https://doi.org/10.5194/hess-23-5069-2019, 2019.
Duberstein, J. A. and Conner, W. H.: Use of hummocks and hollows by trees in
tidal freshwater forested wetlands along the Savannah River, Forest Ecol.
Manag., 258, 1613–1618, 2009.
Eggers, S. D. and Reed, D. M.: Wetland plants and plant communities of
Minnesota & Wisconsin, US Army Corps of Engineers, St. Paul District,
1988.
Eppinga, M. B., Rietkerk, M., Borren, W., Lapshina, E. D., Bleuten, W., and
Wassen, M. J.: Regular surface patterning of peatlands: confronting theory
with field data, Ecosystems, 11, 520–536, 2008.
Eppinga, M. B., De Ruiter, P. C., Wassen, M. J., and Rietkerk, M.: Nutrients and
hydrology indicate the driving mechanisms of peatland surface patterning,
Am. Nat., 173, 803–818, 2009.
Erdmann, G. G., Crow, T. R., Ralph Jr., M., and Wilson, C. D.: Managing black
ash in the Lake States, General Technical Report NC-115, St. Paul, MN: US
Dept. of Agriculture, Forest Service, North Central Forest Experiment
Station, 115 pp., 1987.
Ferreira, T. O., Otero, X. L., Vidal-Torrado, P., and Macías, F.: Effects
of bioturbation by root and crab activity on iron and sulfur biogeochemistry
in mangrove substrate, Geoderma, 142, 36–46, 2007.
Fogel, B. N., Crain, C. M., and Bertness, M. D.: Community level engineering
effects of Triglochin maritima (seaside arrowgrass) in a salt marsh in
northern New England, USA, J. Ecol., 92, 589–597, 2004.
Frankl, R. and Schmeidl, H.: Vegetation change in a South German raised bog:
Ecosystem engineering by plant species, vegetation switch or ecosystem level
feedback mechanisms?, Flora, 195, 267–276, 2000.
Frei, S., Knorr, K. H., Peiffer, S., and Fleckenstein, J. H.: Surface
micro-topography causes hot spots of biogeochemical activity in wetland
systems: A virtual modeling experiment, J. Geophys. Res.-Biogeo., 117, G00N12, https://doi.org/10.1029/2012JG002012, 2012.
Gunnarsson, U. and Rydin, H.: Demography and recruitment of Scots pine on
raised bogs in eastern Sweden and relationships to microhabitat
differentiation, Wetlands, 18, 133–141, 1998.
Hackenberg, J., Spiecker, H., Calders, K., Disney, M., and Raumonen, P.:
SimpleTree – an efficient open source tool to build tree models from TLS
clouds, Forests, 6, 4245–4294, 2015.
Heffernan, J. B., Watts, D. L., and Cohen, M. J.: Discharge competence and
pattern formation in peatlands: a meta-ecosystem model of the Everglades
ridge-slough landscape, PloS one, 8, e64174, https://doi.org/10.1371/journal.pone.0064174, 2013.
Hefting, M., Clément, J. C., Dowrick, D., Cosandey, A. C., Bernal, S.,
Cimpian, C., Tatur, A., Burt, T. P., and Pinay, G.: Water table elevation
controls on soil nitrogen cycling in riparian wetlands along a European
climatic gradient, Biogeochemistry, 67, 113–134, 2004.
Hsieh, Y. P. and Yang, C. H.: Pyrite accumulation and sulfate depletion as
affected by root distribution in aJuncus (needle rush) salt marsh,
Estuaries, 20, 640–645, 1997.
Janssens, J. A.: Noteworthy Mosses & Liverworts of Minnesota, Part I:
Illustrated Field Keys, Minnesota Department of Natural Resources 2014, 176 pp., Minneapolis, MN, 2014.
Jerome, D., Westwood, M., Oldfield, S., and Romero-Severson, J.: Fraxinus
nigra, The IUCN Red List of Threatened Species, e.T61918683A61918721,
https://doi.org/10.2305/IUCN.UK.2017-2.RLTS.T61918683A61918721.en
(downloaded on: 27 January 2020), 2017.
Jones, D. L. and Willett, V. B.: Experimental evaluation of methods to quantify
dissolved organic nitrogen (DON) and dissolved organic carbon (DOC) in soil,
Soil Biol. Biochem., 38, 991–999, 2006.
Jones, R. H., Lockaby, B. G., and Somers, G. L.: Effects of microtopography and
disturbance on fine-root dynamics in wetland forests of low-order stream
floodplains, Am. Midl. Nat., 136, 57–71, 1996.
Kirchner, J. W., Feng, X., and Neal, C.: Fractal stream chemistry and its
implications for contaminant transport in catchments, Nature, 403,
524, https://doi.org/10.1038/35000537, 2000.
Kirchner, J. W., Tetzlaff, D., and Soulsby, C.: Comparing chloride and water
isotopes as hydrological tracers in two Scottish catchments, Hydrol.
Process., 24, 1631–1645, 2010.
Koponen, P., Nygren, P., Sabatier, D., Rousteau, A., and Saur, E.: Tree
species diversity and forest structure in relation to microtopography in a
tropical freshwater swamp forest in French Guiana, Plant Ecol., 173,
17–32, 2004.
Laine, J., Vasander, H., and Sallantaus, T.: Ecological effects of peatland
drainage for forestry, Environ. Rev., 3, 286–303, 1995.
Li, X., Minick, K. J., Luff, J., Noormets, A., Miao, G., Mitra, B., Domec,
J. C., Sun, G., McNulty, S., and King, J. S.: Effects of Microtopography on
Absorptive and Transport Fine Root Biomass, Necromass, Production, Mortality
and Decomposition in a Coastal Freshwater Forested Wetland, Southeastern
USA, Ecosystems, 1–15, in press, 2020.
Looney, C. E., D'Amato, A. W., Fraver, S., Palik, B. J., and Reinikainen, M. R.:
Examining the influences of tree-to-tree competition and climate on
size-growth relationships in hydric, multi-aged Fraxinus nigra stands,
Forest Ecol. Manag., 375, 238–248, 2016.
Looney, C. E., D'Amato, A. W., Fraver, S., Palik, B. J., and Frelich, L. E.:
Interspecific competition limits the realized niche of Fraxinus nigra along
a waterlogging gradient, Can. J. Forest Res., 48,
1292–1301, 2018.
Madureira, M. J., Vale, C., and Gonçalves, M. S.: Effect of plants on
sulphur geochemistry in the Tagus salt-marshes sediments, Mar. Chem.,
58, 27–37, 1997.
Mäkiranta, P., Riutta, T., Penttilä, T., and Minkkinen, K.: Dynamics
of net ecosystem CO2 exchange and heterotrophic soil respiration following
clearfelling in a drained peatland forest, Agr. Forest
Meteorol., 150, 1585–1596, 2010.
Malhotra, A., Roulet, N. T., Wilson, P., Giroux-Bougard, X., and Harris, L. I.:
Ecohydrological feedbacks in peatlands: an empirical test of the
relationship among vegetation, microtopography and water table,
Ecohydrology, 9, 1346–1357, 2016.
Malmer, N., Albinsson, C., Svensson, B. M., and Wallén, B.: Interferences
between Sphagnum and vascular plants: effects on plant community structure
and peat formation, Oikos, 100, 469–482, 2003.
McCune, B. and Grace, J. B.: Analysis of ecological communities, Vol. 28, MjM software design,
Gleneden Beach, OR, 2002.
Megonigal, J. P., Conner, W. H., Kroeger, S., and Sharitz, R. R.: Aboveground
production in southeastern floodplain forests: a test of the subsidy–stress
hypothesis, Ecology, 78, 370–384, 1997.
Nielsen, D. L. and Chick, A. J.: Flood-mediated changes in aquatic macrophyte
community structure, Mar. Freshwater Res., 48, 153–157, 1997.
Nielsen, D. L., Podnar, K., Watts, R. J., and Wilson, A. L.: Empirical evidence
linking increased hydrologic stability with decreased biotic diversity
within wetlands, Hydrobiologia, 708, 81–96, 2013.
Økland, R. H., Rydgren, K., and Økland, T.: Species richness in boreal
swamp forests of SE Norway: The role of surface microtopography, J.
Veg. Sci., 19, 67–74, 2008.
Oksanen, J. F., Blanchet, B., Friendly, M., Kindt, R., Legendre, P., McGlinn,
D., Minchin, P. R., O'Hara, R. B., Simpson, G. L., Solymos, P., Stevens,
M. H. H., Szoecs, E., and Wagner, H.: vegan: Community Ecology Package, R
package version 2.5-3, available at: https://CRAN.R-project.org/package=vegan, last access: 1 May 2018.
Olde Venterink, H., Wassen, M. J., Verkroost, A. W. M., and De Ruiter, P. C.:
Species richness–productivity patterns differ between N-, P-, and K-limited
wetlands, Ecology, 84, 2191–2199, 2003.
Palik, B. J., Ostry, M. E., Venette, R. C., and Abdela, E.: Tree regeneration in
black ash (Fraxinus nigra) stands exhibiting crown dieback in Minnesota,
Forest Ecol. Manag., 269, 26–30, 2012.
Peach, M. and Zedler, J. B.: How tussocks structure sedge meadow vegetation,
Wetlands, 26, 322–335, 2006.
Pouliot, R., Rochefort, L., Karofeld, E., and Mercier, C. Initiation of
Sphagnum moss hummocks in bogs and the presence of vascular plants: Is there
a link?, Acta Oecol., 37, 346–354, 2011.
R Core Team: R: A language and environment for statistical computing, R
Foundation for Statistical Computing, Vienna, Austria, available at: https://www.R-project.org/, last access: 1 May 2018.
Reiners, W. A. and Reiners, N. M.: Energy and nutrient dynamics of forest
floors in three Minnesota forests, J. Ecol., 58, 497–519, 1970.
Resler, L. M. and Stine, M. B.: Patterns and Processes of Tree Islands in Two
Transitional Environments: Alpine Treeline and Bog Forest-Meadow Ecotones,
Geography Compass, 3, 1305–1330, 2009.
Rietkerk, M., Dekker, S. C., Wassen, M. J., Verkroost, A. W. M., and Bierkens,
M. F. P.: A putative mechanism for bog patterning, Am. Nat.,
163, 699–708, 2004.
Rodríguez-Iturbe, I., D'Odorico, P., Laio, F., Ridolfi, L., and Tamea,
S.: Challenges in humid land ecohydrology: Interactions of water table and
unsaturated zone with climate, soil, and vegetation, Water Resour.
Res., 43, W09301, https://doi.org/10.1029/2007WR006073, 2007.
Ross, M. S., Mitchell-Bruker, S., Sah, J. P., Stothoff, S., Ruiz, P. L., Reed,
D. L., Jayachandran, K., and Coultas, C. L.: Interaction of hydrology and
nutrient limitation in the Ridge and Slough landscape of the southern
Everglades, Hydrobiologia, 569, 37–59, 2006.
Sebestyen, S. D., Dorrance, C., Olson, D. M., Verry, E. S., Kolka, R. K.,
Elling, A. E., and Kyllander, R.: Chapter 2. Long–term monitoring sites and
trends at the Marcell Experimental Forest, in: Peatland biogeochemistry and
watershed hydrology at the Marcell Experimental Forest, edited by:
Kolka, R. K., Sebestyen, S. D., Verry, E. S., and Brooks, K. N., Boca Raton, FL, CRC
Press, 15–71, 2011.
Soil Survey Staff: Natural Resources Conservation Service, United States
Department of Agriculture, Web Soil Survey, available at: https://websoilsurvey.sc.egov.usda.gov/, last access: 11 February 2019.
Stovall, A. E., Diamond, J. S., Slesak, R. A., McLaughlin, D. L., and Shugart, H.:
Quantifying wetland microtopography with terrestrial laser scanning, Remote
Sens. Environ., 232, 111271, https://doi.org/10.1016/j.rse.2019.111271, 2019.
Strack, M., Waddington, J. M., Rochefort, L., and Tuittila, E. S.: Response of
vegetation and net ecosystem carbon dioxide exchange at different peatland
microforms following water table drawdown, J. Geophys. Res.-Biogeo., 111, G02006, https://doi.org/10.1029/2005JG000145, 2006.
Stribling, J. M., Glahn, O. A., Chen, X. M., and Cornwell, J. C.:
Microtopographic variability in plant distribution and biogeochemistry in a
brackish-marsh system, Mar. Ecol.-Prog. Ser., 320, 121–129, 2006.
Sullivan, P. F., Arens, S. J., Chimner, R. A., and Welker, J. M.: Temperature and
microtopography interact to control carbon cycling in a high arctic fen,
Ecosystems, 11, 61–76, 2008.
Takagi, K., Tsuboya, T., Takahashi, H., and Inoue, T.: Effect of the invasion
of vascular plants on heat and water balance in the Sarobetsu mire, northern
Japan, Wetlands, 19, 246–254, 1999.
Thorslund, J., Cohen, M. J., Jawitz, J. W., Destouni, G., Creed, I. F., Rains,
M. C., Badiou, P., and Jarsojo, J.: Solute evidence for hydrological connectivity
of geographically isolated wetlands, Land Degradation and Development, 29, 4061–4070,
https://doi.org/10.1002/ldr.3175, 2018.
USDA Forest Service: Forests of the Northern Forest Inventory and Analysis
Program, Web report, U.S. Department of Agriculture, Forest Service,
Northern Research Station, Houghton, MI, 2016.
U.S. EPA: Methods for Evaluating Wetland Condition: Biogeochemical
Indicators, Office of Water, U.S. Environmental Protection Agency,
Washington, DC, EPA-822-R-08-022, p. 32, 2008.
van der Valk, A. G., Squires, L., and Welling, C. H.: Assessing the impacts of
an increase in water level on wetland vegetation, Ecol. Appl.,
4, 525–534, 1994.
van Ruijven, J. and Berendse, F.: Diversity–productivity relationships:
initial effects, long-term patterns, and underlying mechanisms, P. Natl. Acad. Sci. USA, 102, 695–700, 2005.
Vivian-Smith, G.: Microtopographic Heterogeneity and Floristic Diversity in
Experimental Wetland Communities, J. Ecol., 85, 71–82, 1997.
Wallis, E. and Raulings, E.: Relationship between water regime and
hummock-building by Melaleuca ericifolia and Phragmites australis in a
brackish wetland, Aquat. Bot., 95, 182–188, 2011.
Watts, D. L., Cohen, M. J., Heffernan, J. B., and Osborne, T. Z.: Hydrologic
modification and the loss of self-organized patterning in the ridge–slough
mosaic of the Everglades, Ecosystems, 13, 813–827, 2010.
Werner, K. J. and Zedler, J. B.: How sedge meadow soils, microtopography, and
vegetation respond to sedimentation, Wetlands, 22, 451–466, 2002.
Wetzel, P. R., Van Der Valk, A. G., Newman, S., Gawlik, D. E., Troxler Gann,
T., Coronado-Molina, C. A., Childers, D. L., and Sklar, F. H.: Maintaining tree
islands in the Florida Everglades: nutrient redistribution is the key,
Front. Ecol. Environ., 3, 370–376, 2005.
Windham, L.: Microscale spatial distribution of Phragmites australis (common
reed) invasion into Spartina patens (salt hay)-dominated communities in
brackish tidal marsh, Biol. Invasions, 1, 137–148, 1999.
WRCC (Western Regional Climate Center): Cooperative Climatological Data
Summaries, available at: https://wrcc.dri.edu/cgi-bin/cliMAIN.pl?mn4652 (last access: 1 May 2018),
2019.
Short summary
Many wetland systems exhibit lumpy, or uneven, soil surfaces where higher points are called hummocks and lower points are called hollows. We found that, while hummocks extended only ~ 20 cm above hollow surfaces, they exhibited distinct plant communities, plant growth, and soil properties. Differences between hummocks and hollows were the greatest in wetter sites, supporting the hypothesis that plants create and maintain their own hummocks in response to saturated soil conditions.
Many wetland systems exhibit lumpy, or uneven, soil surfaces where higher points are called...
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