Publications
Filter Total Items: 234
Upscaling wetland methane emissions from the FLUXNET-CH4 Eddy Covariance Network (UpCH4 v1.0): Model development, network assessment, and budget comparison Upscaling wetland methane emissions from the FLUXNET-CH4 Eddy Covariance Network (UpCH4 v1.0): Model development, network assessment, and budget comparison
Wetlands are responsible for 20%–31% of global methane (CH4) emissions and account for a large source of uncertainty in the global CH4 budget. Data-driven upscaling of CH4 fluxes from eddy covariance measurements can provide new and independent bottom-up estimates of wetland CH4 emissions. Here, we develop a six-predictor random forest upscaling model (UpCH4), trained on 119 site-years...
Authors
Gavin McNicol, Etienne Fluet-Chouinard, Zutao Ouyang, Sarah Knox, Zhang Zhen, Tuula Aalto, Sheel Bansal, Kuang-Yu Chang, Min Chen, Kyle Delwiche, Sarah Feron, Mathias Goeckede, Jinxun Liu, Avni Malhotra, Joe Melton, William Riley, Rodrigo Vargas, Kunxiaojia Yuan, Qing Yang, Qing Zhu, Pavel Alekseychik, Mika Aurela, David P. Billesbach, David Campbell, Jiquan Chen, Housen Chu, Ankur Desai, Eugenie Euskirchen, Jordan Goodrich, Timothy Griffis, Manuel Helbig, Takashi Hirano, Hiroki Iwata, Gerald Jurasinski, John King, Franziska Koebsch, Randall Kolka, Ken Krauss, Annalea Lohila, Ivan Mammarella, Mats Nilson, Asko Noormets, Walter Oechel, Matthias Peichl, Torsten Sachs, Ayaka Sakabe, Christopher Schulze, Oliver Sonnentag, Ryan C. Sullivan, Eeva-Stiina Tuittila, Masahito Ueyama, Timo Vesala, Eric Ward, Christian Wille, Guan Wong, Donatella Zona, Lisamarie Windham-Myers, Benjamin Poulter, Robert B. Jackson
Macroscale analyses suggest invasive plant impacts depend more on the composition of invading plants than on environmental context Macroscale analyses suggest invasive plant impacts depend more on the composition of invading plants than on environmental context
Aim Native biodiversity is threatened by the spread of non-native invasive species. Many studies demonstrate that invasions reduce local biodiversity but we lack an understanding of how impacts vary across environments at the macroscale. Using ~11,500 vegetation surveys from ecosystems across the United States, we quantified how the relationship between non-native plant cover and native...
Authors
Evelyn Beaury, Helen Sofaer, Regan Early, Ian Pearse, Dana Blumenthal, Jeffrey Corbin, Jeffrey Diez, Jeffrey Dukes, David Barnett, Ines Ibanez, Laís Petri, Montserrat Vilà, Bethany A. Bradley
Estimating groundwater pumping for irrigation: A method comparison Estimating groundwater pumping for irrigation: A method comparison
Effective groundwater management is critical to future environmental, ecological, and social sustainability and requires accurate estimates of groundwater withdrawals. Unfortunately, these estimates are not readily available in most areas due to physical, regulatory, and social challenges. Here, we compare four different approaches for estimating groundwater withdrawals for agricultural...
Authors
Andrea Brookfield, Samuel Zipper, Anthony D. Kendall, Hoori Ajami, Jillian Deines
Identifying hydrologic signatures associated with streamflow depletion caused by groundwater pumping Identifying hydrologic signatures associated with streamflow depletion caused by groundwater pumping
Groundwater pumping can reduce streamflow in nearby waterways (‘streamflow depletion’), a process which must be accounted for in integrated management of surface and groundwater resources. However, causal identification of streamflow depletion from hydrographs alone is challenging because pumping impacts are masked by other drivers of hydrologic variability. To identify potential...
Authors
Dana Lapides, Samuel Zipper, John C. Hammond
Dynamic population models with temporal preferential sampling to infer phenology Dynamic population models with temporal preferential sampling to infer phenology
To study population dynamics, ecologists and wildlife biologists typically use relative abundance data, which may be subject to temporal preferential sampling. Temporal preferential sampling occurs when the times at which observations are made and the latent process of interest are conditionally dependent. To account for preferential sampling, we specify a Bayesian hierarchical abundance...
Authors
Michael Schwob, Mevin Hooten, Travis Mcdevitt-Galles
John Wesley Powell Center for Analysis and Synthesis Newsletter, volume 7, issue 1 John Wesley Powell Center for Analysis and Synthesis Newsletter, volume 7, issue 1
The John Wesley Powell Center for Synthesis & Analysis is a USGS initiative that aims to foster innovative thinking in Earth system science through collaborative analysis and synthesis of existing data and information. The Powell Center supports working groups that address some of the most pressing and complex questions facing society, such as climate change, biodiversity loss, water...
Authors
Jill Baron, Demi Bingham
Density declines, richness increases, and composition shifts in stream macroinvertebrates Density declines, richness increases, and composition shifts in stream macroinvertebrates
Documenting trends of stream macroinvertebrate biodiversity is challenging because biomonitoring often has limited spatial, temporal, and taxonomic scopes. We analyzed biodiversity and composition of assemblages of >500 genera, spanning 27 years, and 6131 stream sites across forested, grassland, urban, and agricultural land uses throughout the United States. In this dataset...
Authors
Samantha Rumschlag, Michael Mahon, Devin K. Jones, William A. Battaglin, Jonny Behrens, Emily S. Bernhardt, Paul Bradley, Ethan Brown, Frederik De Laender, Ryan Hill, Stefan Kunz, Sylvia Lee, Emma Rossi, Ralf Schafer, Travis S. Schmidt, Marie Simonin, Kelly L. Smalling, Kristofor Voss, Jason Rohr
City-scale geothermal energy everywhere to support renewable resilience – A transcontinental cooperation City-scale geothermal energy everywhere to support renewable resilience – A transcontinental cooperation
Cities have important and varying incentives to transform their energy sector to all-electric with low carbon emissions. However, they often encounter a number of impediments when attempting to implement such a change. For example, while urban areas have the highest energy demand-density, cities often lack the space for installing additional energy generation and/or long-duration energy...
Authors
Gregor Goetzl, Erick R. Burns, Andrew Stumpf, Yu-Feng Lin, Amanda Kolker, Maciej Klonowski, Cornelia Steiner, Ryan Cahalan, Jeff Pepin
Genetic diversity and IUCN Red List status Genetic diversity and IUCN Red List status
The International Union for Conservation of Nature (IUCN) Red List is an important and widely used tool for conservation assessment. The IUCN uses information about a species’ range, population size, habitat quality and fragmentation levels, and trends in abundance to assess extinction risk. Genetic diversity is not considered, although it affects extinction risk. Declining populations...
Authors
Chloe Schmidt, Sean Hoban, Margaret Hunter, Ivan Paz-Vinas, Colin Garroway
Genetic diversity goals and targets have improved, but remain insufficient for clear implementation of the post-2020 global biodiversity framework Genetic diversity goals and targets have improved, but remain insufficient for clear implementation of the post-2020 global biodiversity framework
Genetic diversity among and within populations of all species is necessary for people and nature to survive and thrive in a changing world. Over the past three years, commitments for conserving genetic diversity have become more ambitious and specific under the Convention on Biological Diversity’s (CBD) draft post-2020 global biodiversity framework (GBF). This Perspective article...
Authors
Sean Hoban, Michael Bruford, Jessica da Silva, W. Chris Funk, Richard Frankham, Michael Gill, Catherine Grueber, Myriam Heuertz, Margaret Hunter, Francine Kershaw, Robert Lacy, Caroline Lees, Margarida Lopes-Fernandes, Anna MacDonald, Alicia Mastretta-Yanes, Philip J. K. McGowan, Mariah Meek, Joachim Mergeay, Katie Millette, Cinnamon Mittan-Moreau, Laetitia Navarro, David O'Brien, Rob Ogden, Gernot Segelbacher, Ivan Paz-Vinas, Cristiano Vernesi, Linda Laikre
Modeled production, oxidation, and transport processes of wetland methane emissions in temperate, boreal, and Arctic regions Modeled production, oxidation, and transport processes of wetland methane emissions in temperate, boreal, and Arctic regions
Wetlands are the largest natural source of methane (CH4) to the atmosphere. The eddy covariance method provides robust measurements of net ecosystem exchange of CH4, but interpreting its spatiotemporal variations is challenging due to the co-occurrence of CH4 production, oxidation, and transport dynamics. Here, we estimate these three processes using a data-model fusion approach across...
Authors
Masahito Ueyama, Sarah Knox, Kyle Delwiche, Sheel Bansal, William Riley, Dennis Baldocchi, Takashi Hirano, Gavin McNicol, Karina Schafer, Lisamarie Windham-Myers, Benjamin Poulter, Robert Jackson, Kuang-Yu Chang, Jiquan Chen, Housen Chu, Ankur Desai, Sebastien Gogo, Hiroki Iwata, Minseok Kang, Ivan Mammarella, Matthias Peichl, Oliver Sonnentag, Eeva-Stiina Tuittila, Youngryel Ryu, Eugenie Euskirchen, Mathias Goeckede, Adrien Jacotot, Mats Nilsson, Torsten Sachs
Vulnerable waters are essential to watershed resilience Vulnerable waters are essential to watershed resilience
Watershed resilience is the ability of a watershed to maintain its characteristic system state while concurrently resisting, adapting to, and reorganizing after hydrological (for example, drought, flooding) or biogeochemical (for example, excessive nutrient) disturbances. Vulnerable waters include non-floodplain wetlands and headwater streams, abundant watershed components representing...
Authors
Charles R. Lane, Irena F. Creed, Heather Golden, Scott Leibowitz, David M. Mushet, Mark Rains, Qiusheng Wu, Ellen D’Amico, Laurie C. Alexander, Genevieve Ali, Nandita Basu, Micah Bennett, Jay Christensen, Matthew Cohen, Tim Covino, Ben DeVries, Ryan Hill, Kelsey Jencso, Megan Lang, Daniel McLaughlin, Donald O. Rosenberry, Jennifer Rover, Melanie Vanderhoof