Article
Geosciences, Multidisciplinary
Nicholas E. Ray, Meredith A. Holgerson
Summary: Inland waters, especially small ponds, have a significant but poorly understood role in global greenhouse gas emissions. This study conducted high-resolution temporal sampling and found that temperate constructed ponds are a net source of greenhouse gases, with methane emissions being highly variable within seasons. The study suggests that building ponds to favor mixed conditions can help minimize the global greenhouse gas footprint of future pond construction.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Fisheries
Carolin Waldemer, Matthias Koschorreck
Summary: This study quantified diffusive and ebullitive greenhouse gas emissions from temperate fish ponds for the first time. Results showed significant variations in emissions between ponds, with methane consistently being the predominant greenhouse gas. The quantification of greenhouse gas emissions from temperate fish ponds is important for improving estimations.
Article
Engineering, Environmental
Junji Yuan, Deyan Liu, Jian Xiang, Tiehu He, Hojeong Kang, Weixin Ding
Summary: Aquaculture ponds are significant sources of methane emissions but weak sources of nitrous oxide. Methane emissions are influenced by temperature, dissolved organic carbon concentration, and redox potential, while nitrous oxide flux is affected by gas transfer velocity. Nitrous oxide is primarily produced in the water column and can diffuse downwards into sediments for consumption.
Article
Agronomy
Jiayu Zhao, Mi Zhang, Wei Xiao, Lei Jia, Xiufang Zhang, Jiao Wang, Zhen Zhang, Yanhong Xie, Yini Pu, Shoudong Liu, Zhaozhong Feng, Xuhui Lee
Summary: Aquaculture ponds are important anthropogenic methane sources, with water temperature being the primary driver of methane flux and ebullition being the main transport way. Dredging may have a larger influence on emission flux than aeration.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)
Article
Engineering, Environmental
Maciej Bartosiewicz, Liah X. Coggins, Patricia Glaz, Alicia Cortes, Sebastien Bourget, Elke S. Reichwaldt, Sally MacIntyre, Anas Ghadouani, Isabelle Laurion
Summary: Accurate estimation of gaseous emissions and carbon sequestration in wastewater processing is crucial for infrastructure design and planning. This study examines the interaction between biological productivity, hydrodynamics, and carbon-based greenhouse gas emissions to provide guidance for more accurate assessments from waste stabilization ponds.
Article
Agriculture, Multidisciplinary
Xiantao Fang, Chao Wang, Tianrui Zhang, Fengwei Zheng, Jianting Zhao, Shuang Wu, Matti Barthel, Johan Six, Jianwen Zou, Shuwei Liu
Summary: This study measured ebullitive methane (CH4) fluxes from inland freshwater fish and crab aquaculture ponds in subtropical China over a two-year period. The results show that during the aquaculture period, ebullition is the dominant pathway of CH4 emissions in these ponds, with dissolved oxygen and dissolved organic carbon being the primary factors driving the fluxes. The study also suggests that the use of aerators can significantly reduce CH4 emissions from freshwater aquaculture ponds.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2022)
Article
Environmental Sciences
K. M. Walter Anthony, P. Lindgren, P. Hanke, M. Engram, P. Anthony, R. P. Daanen, A. Bondurant, A. K. Liljedahl, J. Lenz, G. Grosse, B. M. Jones, L. Brosius, S. R. James, B. J. Minsley, N. J. Pastick, J. Munk, J. P. Chanton, C. E. Miller, F. J. Meyer
Summary: Thermokarst lakes in interior Alaska play a significant role in accelerating permafrost thaw and releasing carbon dioxide and methane, thus contributing to climate warming. The spatiotemporal dynamics of hotspot-seep CH4 emissions provide valuable insights into the impact of abrupt permafrost thaw on climate feedback.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
A. A. P. Baron, L. T. Dyck, H. Amjad, J. Bragg, E. Kroft, J. Newson, K. Oleson, N. J. Casson, R. L. North, J. J. Venkiteswaran, C. J. Whitfield
Summary: This study found significant variations in methane emission rates in small shallow ponds, with unclear relationships with physicochemical characteristics; temperature had a weak impact on emission rates, and region-specific factors may play a role in methane release.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Michael T. Booth, Megan Urbanic, Xia Wang, Jake J. Beaulieu
Summary: Inland aquatic systems are major contributors to the global atmospheric carbon budget through GHG emissions. Bioturbation of aquatic sediments impacts biogeochemical conditions and GHG emissions rates. The frequency of disturbance has variable effects on GHG emissions, with intermediate disturbance resulting in the highest total GHG emission rate.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Tingting Sun, Wenxuan Li, Ke Yin
Summary: Methane bubbles can facilitate the transport of polycyclic aromatic hydrocarbons (PAHs) from lake sediments, increasing PAH concentration in the water column and offsetting dry PAH deposition flux into global lakes sediment. This process may significantly contribute to the increment of PAHs in lake waters until 2100.
Article
Engineering, Environmental
Bogang Dong, Yi Xi, Yongxing Cui, Shushi Peng
Summary: Aquaculture ponds in China contribute significantly to methane emissions at the national level, with larger emissions compared to reservoirs and lakes. However, the emission intensity of aquaculture species is lower than other major livestock sources. Further field measurements are needed to reduce uncertainty in methane emissions from aquaculture ponds.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Lei Wang, Zhiheng Du, Zhiqiang Wei, Qian Xu, Yaru Feng, Penglin Lin, Jiahui Lin, Shengyun Chen, Yongping Qiao, Jianzong Shi, Cunde Xiao
Summary: CH4 emissions from thermokarst lakes on the Tibetan Plateau show significant spatiotemporal heterogeneity, with ebullition being the main CH4 pathway and lake type and organic matter content influencing CH4 diffusion fluxes. Our findings highlight the importance of considering ebullition CH4 fluxes to improve the accuracy of estimations for CH4 emissions from thermokarst lakes on the Tibetan Plateau.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Shoji D. Thottathil, Yves T. Prairie
Summary: Stable isotopic analysis is a popular method for understanding methane emissions in aquatic environments, yet the lack of concurrent measurements of isotopes and fluxes limits the ability to establish a connection between emission rates and isotopic signatures. Our study on northern temperate lakes found that higher methane emissions were sustained by acetoclastic methanogenesis and correlated strongly with isotopic variability. Further research is needed to account for different emission pathways and their isotopic signature to accurately allocate methane source signature in northern lakes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Environmental Sciences
Qiong Nan, Liqing Xin, Yong Qin, Muhammad Waqas, Weixiang Wu
Summary: This review explores the mechanisms and controversies surrounding the long-term effects of biochar on methane mitigation in paddy soil. It proposes potential mechanisms of biochar in long-term methane emission response and highlights the need for further research in order to achieve carbon neutrality goals.
Article
Environmental Sciences
Kyle B. Delwiche, John A. Harrison, Joannes D. Maasakkers, Melissa P. Sulprizio, John Worden, Daniel J. Jacob, Elsie M. Sunderland
Summary: This study develops a mechanistic model, ResME, to estimate methane emissions from hydroelectric reservoirs. The results demonstrate that methane emissions are influenced by latitude, with higher allochthonous carbon contributions in tropical reservoirs. Turbine intake depths greatly affect the total emissions. Future work should focus on improving estimates of reservoir carbon inputs and decomposition rates.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Article
Environmental Sciences
Brittany A. Verbeke, Louis J. Lamit, Erik A. Lilleskov, Suzanne B. Hodgkins, Nathan Basiliko, Evan S. Kane, Roxane Andersen, Rebekka R. E. Artz, Juan C. Benavides, Brian W. Benscoter, Werner Borken, Luca Bragazza, Stefani M. Brandt, Suzanna L. Braeuer, Michael A. Carson, Dan Charman, Xin Chen, Beverley R. Clarkson, Alexander R. Cobb, Peter Convey, Jhon del Aguila Pasquel, Andrea S. Enriquez, Howard Griffiths, Samantha P. Grover, Charles F. Harvey, Lorna Harris, Christina Hazard, Dominic Hodgson, Alison M. Hoyt, John Hribljan, Jyrki Jauhiainen, Sari Juutinen, Klaus-Holger Knorr, Randall K. Kolka, Mari Kononen, Tuula Larmola, Carmody K. McCalley, James McLaughlin, Tim R. Moore, Nadia Mykytczuk, Anna E. Normand, Virginia Rich, Nigel Roulet, Jessica Royles, Jasmine Rutherford, David S. Smith, Mette M. Svenning, Leho Tedersoo, Pham Q. Thu, Carl C. Trettin, Eeva-Stiina Tuittila, Zuzana Urbanova, Ruth K. Varner, Meng Wang, Zheng Wang, Matt Warren, Magdalena M. Wiedermann, Shanay Williams, Joseph B. Yavitt, Zhi-Guo Yu, Zicheng Yu, Jeffrey P. Chanton
Summary: This study examined variations in the organic matter functional groups of peat samples collected from different latitudes and elevations using Fourier Transform Infrared Spectroscopy. The results showed that peat from high latitudes had higher carbohydrate content, while peat from low latitudes had higher aromatic content. For peat from similar latitudes but different elevations, higher elevations had higher carbohydrate content and lower aromatic content. These findings are important for understanding the response of peatland soil to climate change.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Environmental Sciences
M. E. Holmes, P. M. Crill, W. C. Burnett, C. K. McCalley, R. M. Wilson, S. Frolking, K-Y Chang, W. J. Riley, R. K. Varner, S. B. Hodgkins, A. P. McNichol, S. R. Saleska, V. Rich, J. P. Chanton
Summary: Stordalen Mire is a peatland in arctic Sweden that exhibits a habitat gradient from permafrost palsa to thawed fen. The evaluation of carbon accumulation rates across this gradient using three independent approaches showed that recent carbon balance in this area is being offset by rising methane emissions, leading to net CO2-equivalent emissions. This indicates that the mire and similar permafrost ecosystems will exert a warming influence on future climate.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Environmental Sciences
Kyle A. Arndt, Eleanor E. Campbell, Chris D. Dorich, A. Stuart Grandy, Timothy S. Griffin, Peter Ingraham, Apryl Perry, Ruth K. Varner, Alexandra R. Contosta
Summary: This study examined the potential of Management Intensive Grazing (MIG) pastures in the northeastern United States to store carbon in soils. The findings showed that MIG grazing increased soil carbon content, especially in fields with lower initial soil carbon. Modeled simulations also indicated that soil physio-chemical status had a greater impact on carbon storage than grazing intensity, with continuous grazing leading to a decline in soil carbon.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Ecology
Fiona Jevon, Ashley K. Lang
Summary: The allocation of tree biomass to leaves, roots, and wood has implications for carbon residence time and storage in ecosystems. This study found that the type of mycorrhizal association, along with climate and leaf habit, significantly influenced biomass allocation. Trees associated with arbuscular mycorrhizal (AM) fungi allocated more biomass to root tissue compared to trees associated with ectomycorrhizal (ECM) fungi. Considering mycorrhizal associations could improve our understanding of ecosystem carbon storage.
Article
Ecology
N. Niloufar Kashi, Erik A. Hobbie, Ruth K. Varner, Adam S. Wymore, Jessica G. Ernakovich, Reiner Giesler
Summary: Permafrost thaw releases nutrients and metals that affect methane production and oxidation. Plant community, nutrient stoichiometry, and metal availability modulate how permafrost thaw affects methane production and oxidation.
Article
Environmental Sciences
Rachel M. Wilson, Moira A. Hough, Brittany A. Verbeke, Suzanne B. Hodgkins, Jeff P. Chanton, Scott D. Saleska, Virginia Rich, Malak M. Tfaily, Gene Tyson, Matthew B. Sullivan, Eoin Brodie, William J. Riley, Ben Woodcroft, Carmody McCalley, Sky C. Dominguez, Patrick M. Crill, Ruth K. Varner, Steve Frolking, William T. Cooper
Summary: This study investigates the relationship between plant tissue chemistry and soil organic matter (SOM) in an Arctic peatland, and its impact on carbon emissions. The results show that the quality of organic matter differs between different plant species and is influenced by vegetation shifts and moisture levels. The findings highlight the importance of vegetation changes in peatlands in controlling carbon emissions under climate change.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Studies
Jonathan Salerno, Karen Bailey, Jeremy Diem, Bronwen Konecky, Ryan Bridges, Shamilah Namusisi, Robert Bitariho, Michael Palace, Joel Hartter
Summary: This study explores the relationship between farmers' tracking ability of climate patterns and crop yields by combining farmers' observations and satellite estimates. The findings show that high-fidelity tracking of recent rainfall patterns is associated with higher yields, while tracking of less-recent patterns does not predict higher yields. This highlights the importance of smallholder knowledge systems in filling information gaps in climate science.
WEATHER CLIMATE AND SOCIETY
(2022)
Article
Ecology
Fiona Jevon, Dayna De la Cruz, Joseph A. LaManna, Ashley K. Lang, David A. Orwig, Sydne Record, Paige Kouba, Matthew P. Ayres, Jaclyn Hatala Matthes
Summary: Conspecific negative density dependence promotes tree species diversity in temperate forests and is related to tree species traits and ecological attributes.
Article
Environmental Sciences
Clarice R. Perryman, Carmody K. McCalley, Jessica G. Ernakovich, Louis J. Lamit, Joanne H. Shorter, Erik Lilleskov, Ruth K. Varner
Summary: Water table depth and vegetation are key factors controlling methane emissions from peatlands. This study found that microtopography plays a significant role in belowground methane cycling, with different microforms exhibiting distinct microbial processes. Water table depth was found to have a stronger influence on methane cycling than vegetation, indicating its importance in regulating belowground methane dynamics.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Article
Multidisciplinary Sciences
Shaun Watmough, Spencer Gilbert-Parkes, Nathan Basiliko, Louis J. Lamit, Erik A. Lilleskov, Roxanne Andersen, Jhon Del Aguila-Pasquel, Rebekka E. Artz, Brian W. Benscoter, Werner Borken, Luca Bragazza, Stefani M. Brandt, Suzanna L. Brauer, Michael A. Carson, Xin Chen, Rodney A. Chimner, Bev R. Clarkson, Alexander R. Cobb, Andrea S. Enriquez, Jenny Farmer, Samantha P. Grover, Charles F. Harvey, Lorna Harris, Christina Hazard, Alison M. Hoyt, John Hribljan, Jyrki Jauhiainen, Sari Juutinen, Evan S. Kane, Klaus-Holger Knorr, Randy Kolka, Mari Kononen, Anna M. Laine, Tuula Larmola, Patrick A. Levasseur, Carmody K. McCalley, Jim McLaughlin, Tim R. Moore, Nadia Mykytczuk, Anna E. Normand, Virginia Rich, Bryce Robinson, Danielle L. Rupp, Jasmine Rutherford, Christopher W. Schadt, Dave S. Smith, Graeme Spiers, Leho Tedersoo, Pham Q. Thu, Carl C. Trettin, Eeva-Stiina Tuittila, Merritt Turetsky, Zuzana Urbanova, Ruth K. Varner, Mark P. Waldrop, Meng Wang, Zheng Wang, Matt Warren, Magdalena M. Wiedermann, Shanay T. Williams, Joseph B. Yavitt, Zhi-Guo Yu, Geoff Zahn
Summary: Carbon and nitrogen concentrations vary among different peatland categories, but depth does not have a significant impact on the chemical composition within each category. The study shows that carbon and organic matter concentrations can be predicted based on broadly classified peatland categories, which is important for future research on global peatland carbon and nitrogen stocks.
Article
Ecology
C. Herrick, B. G. Steele, J. A. Brentrup, K. L. Cottingham, M. J. Ducey, D. A. Lutz, M. W. Palace, M. C. Thompson, J. V. Trout-Haney, K. C. Weathers
Summary: Although remote sensing has been used to monitor lake surface water temperature, its access and usage are limited to experts. To improve this, researchers developed lakeCoSTR, a user-friendly cloud-based script that allows ecologists to access Landsat Collection 2 temperature estimates. Comparisons between lakeCoSTR data and in situ measurements showed that lakeCoSTR can be used to document lake temperature trends and reprocess analyses.
Article
Ecology
Fiona V. Jevon, Jonathan Gewirtzman, Ashley K. Lang, Matthew P. Ayres, Jaclyn Hatala Matthes
Summary: Temperate forest soils act as sources of CO2 and sinks for CH4, the two main greenhouse gases responsible for climate change. The fluxes of CO2 and CH4 are influenced by tree species identity and diversity, with deciduous trees showing higher fluxes. Soil CO2 fluxes are more influenced by tree species than CH4 fluxes. Total litter inputs, temperature, soil carbon to nitrogen ratio, soil moisture, and organic horizon depth are important factors affecting soil carbon fluxes.
Article
Plant Sciences
Ashley K. Lang, Jennifer Pett-Ridge, Karis J. McFarlane, Richard P. Phillips
Summary: Identifying the primary controls of POM and MAOM content in soils is crucial for determining future stocks of soil C and N globally. However, drivers of these soil organic matter fractions are likely to vary among ecosystems due to climate, soil type, and the composition of local biological communities.
JOURNAL OF ECOLOGY
(2023)
Article
Ecology
Ashley K. Lang, Elizabeth A. Larue, Stephanie N. Kivlin, Joseph D. Edwards, Richard P. Phillips, Joey Gallion, Nicole Kong, John D. Parker, Melissa K. Mccormick, Grant Domke, Songlin Fei
Summary: Efforts to catalog global biodiversity have often overlooked belowground communities. However, the diversity aboveground may influence the diversity of belowground communities and vice versa. This study found that forest canopy structural diversity is associated with the richness and composition of soil microbial communities, but soil properties are stronger predictors of microbial diversity and composition compared to structural diversity and tree species diversity.
Article
Ecology
Sparkle L. Malone, Youmi Oh, Kyle A. Arndt, George Burba, Roisin Commane, Alexandra R. Contosta, Jordan P. Goodrich, Henry W. Loescher, Gregory Starr, Ruth K. Varner
Summary: Understanding the sources and sinks of methane is crucial for predicting and mitigating climate change. The United States needs to establish a multi-scale observation network to study the flux of biogenic methane. By analyzing variables such as climate, land cover, and location, priority areas for research infrastructure can be identified.