Publications
Filter Total Items: 234
Exploring the role of cryptic nitrogen fixers in terrestrial ecosystems: A frontier in nitrogen cycling research Exploring the role of cryptic nitrogen fixers in terrestrial ecosystems: A frontier in nitrogen cycling research
Biological nitrogen fixation represents the largest natural flux of new nitrogen (N) into terrestrial ecosystems, providing a critical N source to support net primary productivity of both natural and agricultural systems. When they are common, symbiotic associations between plants and bacteria can add more than 100 kg N ha−1 y−1 to ecosystems. Yet, these associations are uncommon in many
Authors
Cory Cleveland, Carla R. G. Reis, Steven Perakis, Katherine A Dynarski, Sarah Batterman, Timothy Crews, Maga Gei, Michael Gundale, Duncan Menge, Mark Peoples, Sasha C. Reed, Verity Salmon, Fiona M. Soper, Benton Taylor, Monica Turner, Nina Wurzburger
Ecologically relevant moisture and temperature metrics for assessing dryland ecosystem dynamics Ecologically relevant moisture and temperature metrics for assessing dryland ecosystem dynamics
In drylands, water-limited regions that cover ~40% of the global land surface, ecosystems are primarily controlled by access to soil moisture and exposure to simultaneously hot and dry conditions. Quantifying ecologically relevant environmental metrics is difficult in drylands because the response of vegetation to moisture and temperature conditions is not easily explained solely by...
Authors
D. A. Chenoweth, Daniel Rodolphe Schlaepfer, J. C. Chambers, J. L. Brown, A. K. Urza, Brice Hanberry, D. Board, M. Crist, John B. Bradford
Higher temperature sensitivity of ecosystem respiration in low marsh compared to high elevation marsh ecosystems Higher temperature sensitivity of ecosystem respiration in low marsh compared to high elevation marsh ecosystems
Salt marsh habitats contain some of the highest quantities of soil organic carbon (C) per unit area, but increasing anthropogenic stressors threaten their ability to maintain themselves as large C reservoirs in some regions. We quantify rates of C gas exchange (methane [CH4] and carbon dioxide [CO2]) monthly across a 16-month period from a low nitrogen “reference” salt marsh on Cape Cod...
Authors
Joanna C. Carey, Kevin D. Kroeger, Jianwu Tang
Simple statistical models can be sufficient for testing hypotheses with population time series data Simple statistical models can be sufficient for testing hypotheses with population time series data
Time-series data offer wide-ranging opportunities to test hypotheses about the physical and biological factors that influence species abundances. Although sophisticated models have been developed and applied to analyze abundance time series, they require information about species detectability that is often unavailable. We propose that in many cases, simpler models are adequate for...
Authors
Seth J. Wenger, Edward S. Stowe, Keith B. Gido, Mary Freeman, Yoichiro Kanno, Nathan R. Franssen, Julian Olden, N. LeRoy Poff, Annika W. Walters, Phillip M. Bumpers, Meryl C. Mims, Mevin B. Hooten, Xinyi Lu
HydroBench: Jupyter supported reproducible hydrological model benchmarking and diagnostic tool HydroBench: Jupyter supported reproducible hydrological model benchmarking and diagnostic tool
Evaluating whether hydrological models are right for the right reasons demands reproducible model benchmarking and diagnostics that evaluate not just statistical predictive model performance but also internal processes. Such model benchmarking and diagnostic efforts will benefit from standardized methods and ready-to-use toolkits. Using the Jupyter platform, this work presents HydroBench...
Authors
Edom Moges, Benjamin Ruddell, Liang Zhang, Jessica M. Driscoll, Parker A. Norton, Fernando Perez, Laurel Larsen
Causality guided machine learning model on wetland CH4 emissions across global wetlands Causality guided machine learning model on wetland CH4 emissions across global wetlands
Wetland CH4 emissions are among the most uncertain components of the global CH4 budget. The complex nature of wetland CH4 processes makes it challenging to identify causal relationships for improving our understanding and predictability of CH4 emissions. In this study, we used the flux measurements of CH4 from eddy covariance towers (30 sites from 4 wetlands types: bog, fen, marsh, and...
Authors
Kunxiaojia Yuan, Qing Zhu, Fa Li, William J. Riley, Margaret Torn, Housen Chu, Gavin McNicol, Mingshu Chen, Sara Knox, Kyle B. Delwiche, Huayi Wu, Dennis Baldocchi, Hongxu Ma, Ankur R. Desai, Jiquan Chen, Torsten Sachs, Masahito Ueyama, Oliver Sonnentag, Manuel Helbig, Eeva-Stiina Tuittila, Gerald Jurasinski, Franziska Koebsch, David I. Campbell, Hans Peter Schmid, Annalea Lohila, Mathias Goeckede, Mats B. Nilsson, Thomas Friborg, Joachim Jansen, Donatella Zona, Eugenie S. Euskirchen, Eric Ward, Gil Bohrer, Zhenong Jin, Licheng Liu, Hiroki Iwata, Jordan P. Goodrich, Robert B. Jackson
What is a biocrust? A refined, contemporary definition for a broadening research community What is a biocrust? A refined, contemporary definition for a broadening research community
Studies of biological soil crusts (biocrusts) have proliferated over the last few decades. The biocrust literature has broadened, with more studies assessing and describing the function of a variety of biocrust communities in a broad range of biomes and habitats and across a large spectrum of disciplines, and also by the incorporation of biocrusts into global perspectives and...
Authors
Bettina Weber, Jayne Belnap, Burkhard Budel, Anita J. Antoninka, Nichole N. Barger, V Bala Chaudhary, Anthony Darrouzet-Nardi, David J. Eldridge, Akasha M. Faist, Scott Ferrenberg, Caroline Havrilla, Elisabeth Huber-Sannwald, Oumarou Malam Issa, Fernando T. Maestre, Sasha C. Reed, Emilio Rodriguez-Caballero, Colin L Tucker, Kristina E. Young, Yuanming Zhang, Yunge Zhao, Xiaobing Zhou, Matthew A. Bowker
Opportunities for businesses to use and support development of SEEA-aligned natural capital accounts Opportunities for businesses to use and support development of SEEA-aligned natural capital accounts
Global understanding of the interconnections between the environment and economy has increased, driving the development of frameworks and standards that support the measurement and valuation of natural capital and ecosystem services by both governments and businesses. This paper outlines how businesses can use natural capital accounts (NCA) aligned to the System of Environmental Economic
Authors
Jane Carter Ingram, Kenneth J. Bagstad, Michael Vardon, Charles Rhodes, Stephen M. Posner, Clyde F. Casey, Pierre D. Glynn, Carl D. Shapiro
Scale dependence of coral reef oases and their environmental correlates Scale dependence of coral reef oases and their environmental correlates
Identifying relatively intact areas within ecosystems and determining the conditions favoring their existence is necessary for effective management in the context of widespread environmental degradation. In this study, we used 3766 surveys of randomly selected sites in the United States and U.S. Territories to identify the correlates of sites categorized as “oases” (defined as sites with
Authors
Robin Elahi, Peter J. Edmunds, Ruth D. Gates, Ilsa B. Kuffner, Brian B. Barnes, Iliana Chollett, Travis A. Courtney, James R. Guest, Elizabeth A. Lenz, Lauren Toth, T. Shay Viehman, Ivor D. Williams
Water-use data in the United States: Challenges and future directions Water-use data in the United States: Challenges and future directions
In the United States, greater attention has been given to developing water supplies and quantifying available waters than determining who uses water, how much they withdraw and consume, and how and where water use occurs. As water supplies are stressed due to an increasingly variable climate, changing land-use, and growing water needs, greater consideration of the demand side of the...
Authors
Landon Marston, Abdel Abdallah, Kenneth J. Bagstad, Kerim Dickson, Pierre D. Glynn, Sara Larsen, Forrest Melton, Kyle Onda, Jaime A. Painter, James Prairie, Benjamin Ruddell, Richard Rushforth, Gabriel B. Senay, Kimberly Shaffer
On the role of climate in monthly baseflow changes across the continental United States On the role of climate in monthly baseflow changes across the continental United States
Baseflow is the portion of streamflow that comes from groundwater and subsurface sources. Although baseflow is essential for sustaining streams during low flow and drought periods, we have little information about how and why it has changed over large regions of the continental United States. The objective of this study was to evaluate how changes in the climate system have affected...
Authors
Jessica R. Ayers, Gabriele Villarini, Keith Schilling, Christopher Jones, Andrea E. Brookfield, Samuel Zipper, William H. Farmer
Arsenic in private well water and birth outcomes in the United States Arsenic in private well water and birth outcomes in the United States
Background Prenatal exposure to drinking water with arsenic concentrations >50 μg/L is associated with adverse birth outcomes, with inconclusive evidence for concentrations ≤50 μg/L. In a collaborative effort by public health experts, hydrologists, and geologists, we used published machine learning model estimates to characterize arsenic concentrations in private wells—federally...
Authors
Catherine Bulka, Molly Scannell Bryan, Melissa A. Lombard, Scott Bartell, Daniel K. Jones, Paul M. Bradley, Veronica Vieira, Debra Silverman, Michael J. Focazio, Patricia Toccalino, Johnni Daniel, Lorraine C. Backer, Joseph D. Ayotte, Matthew O. Gribble, Maria Argos