Publications
Listed here are publications, reports and articles by the Climate R&D program.
Filter Total Items: 1020
Astrochronology of the Paleocene-Eocene Thermal Maximum on the Atlantic Coastal Plain
The chronology of the Paleocene-Eocene Thermal Maximum (PETM, ~56 Ma) remains disputed, hampering complete understanding of the possible trigger mechanisms of this event. Here we present an astrochronology for the PETM carbon isotope excursion from Howards Tract, Maryland a paleoshelf environment, on the mid-Atlantic Coastal Plain. Statistical evaluation of variations in calcium content and magnet
Authors
Mingsong Li, Timothy J. Bralower, Lee R. Kump, Jean Self-Trail, James C. Zachos, William D. Rush, Marci M. Robinson
Assessing reproducibility in sedimentary macroscopic charcoal count data
Current understanding of global late Quaternary fire history is largely drawn from sedimentary charcoal data. Since publication, CharAnalysis increasingly has been relied upon as a robust method for analyzing these data. However, several underlying assumptions of the algorithm have not been tested. This study uses replicated charcoal count data to examine the assumption of Poisson distribution and
Authors
Lysanna Anderson, Liubov S. Presnetsova, David Wahl, Geoffrey Phelps, Alan Gous
Floodplain ecology: A novel wetland community of the Amazon
An expedition to the upper estuarine reaches of the Amazon River reveals intriguing overlap of tropical mangrove wetlands with riverine floodplain forests. This newly discovered type of forested wetland assemblage may provide a uniquely process-rich carbon hotspot.
Authors
Ken Krauss
Quality assurance report for Loch Vale Watershed, 2010–19
The Loch Vale Watershed Research and Monitoring Program collects long-term datasets of ecological and biogeochemical parameters in Rocky Mountain National Park to support both (1) management of this protected area and (2) research into watershed-scale ecosystem processes as those processes respond to atmospheric deposition and climate variability. The program collects data on precipitation depth a
Authors
Timothy Weinmann, Jill S. Baron, Amanda Jayo
Hydrologic connectivity and residence time affect the sediment trapping efficiency and dissolved oxygen concentrations of the Atchafalaya River Basin
Little is known about water movement, volume, or residence time (RT), and how those characteristics affect sediment trapping efficiency (TE) and dissolved oxygen concentrations (DO) in the United States' largest remaining bottomland hardwood swamp, the Atchafalaya River Basin. To better understand these dynamics, this study used bathymetry, lidar, and stage records to determine volumes in the Basi
Authors
Daniel Kroes, Richard Day, Michael D. Kaller, Charles R. Demas, William E. Kelso, Tiffany Pasco, Raynie Harlan, Steven Roberts
Simulation of heat flow in a synthetic watershed: Lags and dampening across multiple pathways under a climate-forcing scenario
Although there is widespread agreement that future climates tend toward warming, the response of aquatic ecosystems to that warming is not well understood. This work, a continuation of companion research, explores the role of distinct watershed pathways in lagging and dampening climate-change signals. It subjects a synthetic flow and transport model to a 30-year warming signal based on climate pro
Authors
Daniel T. Feinstein, Randall J. Hunt, Eric D. Morway
Direct and indirect influences of macrophyte cover on abundance and growth of juvenile Atlantic salmon
1. The relationships between macrophytes and the physical and biological characteristics of the environments that aquatic organisms inhabit are complex. Previous studies have shown that the macrophytes, Ranunculus (subgenus Batrachium), which are dominant in lowland chalk streams and widespread across Europe, can enhance juvenile Atlantic salmon abundance and growth to a greater degree than other
Authors
Jessica E Marsh, J. Iwan Jones, Rasmus B. Lauridsen, James Grace, Pavel Kratina
Using a vegetation index to assess wetland condition in the Prairie Pothole Region of North America
Wetlands deliver a suite of ecosystem services to society. Anthropogenic activities, such as wetland drainage, have resulted in considerable wetland loss and degradation, diminishing the intrinsic value of wetland ecosystems worldwide. Protecting remaining wetlands and restoring degraded wetlands are common management practices to preserve and reclaim wetland benefits to society. Accordingly, meth
Authors
Brian Tangen, Sheel Bansal, Seth Jones, Cami S. Dixon, Amanda M. Nahlik, Edward S. DeKeyser, Christina L. M. Hargiss, David M. Mushet
Microbiome assembly in thawing permafrost and its feedbacks to climate
The physical and chemical changes that accompany permafrost thaw directly influence the microbial communities that mediate the decomposition of formerly frozen organic matter, leading to uncertainty in permafrost–climate feedbacks. Although changes to microbial metabolism and community structure are documented following thaw, the generality of post-thaw assembly patterns across permafrost soils of
Authors
Jessica G. Ernakovich, Robyn A. Barbato, Virginia Rich, Christina Schädel, Rebecca E. Hewitt, Stacey Doherty, Emily Whalen, Benjamin Abbott, Jiri Barta, Christina Biasi, Chris Chabot, Jenni Hultman, Christian Knoblauch, Maggie Chui Yim Lau Vetter, Mary-Cathrine Leewis, Susanne Liebner, Rachel Mackelprang, Tullis Onstott, Andreas Richter, Ursel M. E. Schütte, Henri Siljanen, Neslihan Taş, Ina Timling, Tatiana Vishnivetskaya, Mark Waldrop, Matthias Winkel
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 wet tundra)
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
Over the hills and through the farms: Land use and topography influence genetic connectivity of northern leopard frog (Rana pipiens) in the Prairie Pothole Region
ContextAgricultural land-use conversion has fragmented prairie wetland habitats in the Prairie Pothole Region (PPR), an area with one of the most wetland dense regions in the world. This fragmentation can lead to negative consequences for wetland obligate organisms, heightening risk of local extinction and reducing evolutionary potential for populations to adapt to changing environments.Objectives
Authors
Justin M. Waraniak, David M. Mushet, Craig A. Stockwell
Diminishing Arctic lakes
The Arctic is home to the largest surface water fraction of any terrestrial biome, containing thousands of low-lying lakes. Now, it appears that some Arctic lakes are drying due to rising air temperatures and autumn rains, causing permafrost to thaw and water bodies to drain.
Authors
Rebecca A Finger-Higgens