Publications
Listed here are publications, reports and articles by the Climate R&D program.
Filter Total Items: 1020
Quantifying diagenesis, contributing factors, and resulting isotopic bias in benthic foraminifera using the Foraminiferal Preservation Index: Implications for geochemical proxy records
Geochemical records generated from the calcite tests of benthic foraminifera, especially those of the genera Cibicidoides and Uvigerina, provide the basis for proxy reconstructions of past climate. However, the extent to which benthic foraminifera are affected by postdepositional alteration is poorly constrained. Furthermore, how diagenesis may alter the geochemical composition of benthic foramini
Authors
Robert Poirier, Madison Q. Gaetano, Kimberly Acevedo, Morgan F. Morgan F. Schaller, Maureen E. Raymo, Reinhard Kozdon
8,000 years of climate, vegetation, fire and land-use dynamics in the thermo-mediterranean vegetation belt of northern Sardinia (Italy)
Knowledge about the vegetation history of Sardinia, the second largest island of the Mediterranean, is scanty. Here, we present a new sedimentary record covering the past ~ 8,000 years from Lago di Baratz, north-west Sardinia. Vegetation and fire history are reconstructed by pollen, spores, macrofossils and charcoal analyses and environmental dynamics by high-resolution element geochemistry togeth
Authors
Tiziana Pedrotta, Erika Gobet, Christoph Schwörer, Giorgia Beffa, Christoph Butz, Paul D. Henne, César Morales-Molino, Salvatore Pasta, Jacqueline Van Leeuwen, Hendrik Vogel, Elias Zwimpfer, Flavio Anselmetti, Martin Grosjean, Willy Tinner
Resistance, resilience, and recovery of dryland soil bacterial communities across multiple disturbances
Dryland ecosystems are sensitive to perturbations and generally slow to recover post disturbance. The microorganisms residing in dryland soils are especially important as they contribute to soil structure and nutrient cycling. Disturbance can have particularly strong effects on dryland soil structure and function, yet the natural resistance and recovery of the microbial components of dryland soils
Authors
Blaire Steven, Michala Lee Phillips, Jayne Belnap, La Verne Gallegos-Graves, Cheryl R. Kuske, Sasha C. Reed
Investigating vegetation responses to underground nuclear explosions through integrated analyses
Vegetation has the potential to respond to underground nuclear explosions, yet these links have not been fully explored. Given the lack of previously described signatures, the changes in vegetation are possibly subtle. The integration of multiple different data streams is potentially a useful approach to improve signal detection. Here, we investigate whether semi-arid vegetation growth patterns re
Authors
Kurt Solander, Adam D. Collins, Erika Swanson, Ellis Margolis, Brandon Crawford, Elizabeth Miller, Min Chen, Anita Lavadie-Bulnes, Max Ryan, Isaac Borrego, Sanna Sevanto, Emily Schultz-Fellenz
Substantial hysteresis in emergent temperature sensitivity of global wetland CH4 emissions
Wetland methane (CH4) emissions (FCH4) are important in global carbon budgets and climate change assessments. Currently, FCH4 projections rely on prescribed static temperature sensitivity that varies among biogeochemical models. Meta-analyses have proposed a consistent FCH4 temperature dependence across spatial scales for use in models; however, site-level studies demonstrate that FCH4 are often c
Authors
Kuang-Yu Chang, William J. Riley, Sara H. Knox, Robert B. Jackson, Gavin McNicol, Benjamin Poulter, Mika Aurela, Dennis Baldocchi, Sheel Bansal, Gil Bohrer, David I. Campbell, Alessandro Cescatti, Housen Chu, Kyle B. Delwiche, Ankur R. Desai, Eugenie S. Euskirchen, Matthias Goeckede, Thomas Friborg, Kyle S. Hemes, Takashi Hirano, Hiroki Iwata, Manuel Helbig, Trevor F. Keenan, Minseok Kang, Ken Krauss, Annalea Lohila, Bhaskar Mitra, Ivan Mammarella, Akira Miyata, Mats B. Nilsson, Walter C. Oechel, Akso Noormets, Matthias Peichl, Michele L. Reba, Janne Rinne, Dario Papale, Benjamin R. K. Runkle, Youngryel Ryu, Torsten Sachs, Karina VR Schäfer, Hans Peter Schmid, Narasinha Shurpali, Oliver Sonnentag, Angela C.I. Tang, Margaret S. Torn, Eeva-Stiina Tuittila, Carlo Trotta, Masahito Ueyama, Rodrigo Vargas, Timo Vesala, Lisamarie Windham-Myers, Zhen Zhang, Donatella Zona
Predicted vulnerability of carbon in permafrost peatlands With future climate change and permafrost thaw in western Canada
Climate warming in high-latitude regions is thawing carbon-rich permafrost soils, which can release carbon to the atmosphere and enhance climate warming. Using a coupled model of long-term peatland dynamics (Holocene Peat Model, HPM-Arctic), we quantify the potential loss of carbon with future climate warming for six sites with differing climates and permafrost histories in Northwestern Canada. We
Authors
Claire C. Treat, Miriam C. Jones, Jay R. Alder, A. Britta K. Sannel, Philip Camill, Steve Frolking
Stable oxygen isotopes in shallow marine ostracodes from the northern Bering and Chukchi Seas
Stable oxygen isotope measurements on calcitic valves of benthic ostracodes (δ18Oost) from the northern Bering and Chukchi Seas were used to examine ecological and hydrographic processes governing ostracode and associated seawater δ18O values. Five cryophilic taxa were analyzed for δ18Oost values: Sarsicytheridea bradii; Paracyprideis pseudopunctillata; Heterocyprideis sorbyana; Heterocyprideis fa
Authors
Laura Gemery, L.W. Cooper, C Magen, T. M. Cronin, J.M. Grebmeier
Water reliability in the west -- SECURE Water Act Section 9503(C)
No abstract available.
Authors
Marketa McGuire, Subhrendu Gangopadhyay, Justin Martin, Gregory T. Pederson, Connie A. Woodhouse, Jeremy Littell
Regional ensemble modeling reduces uncertainty for digital soil mapping
Recent country and continental-scale digital soil mapping efforts have used a single model to predict soil properties across large regions. However, different ecophysiographic regions within large-extent areas are likely to have different soil-landscape relationships so models built specifically for these regions may more accurately capture these relationships relative to a ‘global’ model. We ask
Authors
Colby C. Brungard, Travis W. Nauman, Michael C. Duniway, Kari E. Veblen, Kyle C. Nehring, David S. White, Shawn W. Salley, Julius Anchang
Identifying dominant environmental predictors of freshwater wetland methane fluxes across diurnal to seasonal time scales
While wetlands are the largest natural source of methane (CH4) to the atmosphere, they represent a large source of uncertainty in the global CH4 budget due to the complex biogeochemical controls on CH4 dynamics. Here we present, to our knowledge, the first multi-site synthesis of how predictors of CH4 fluxes (FCH4) in freshwater wetlands vary across wetland types at diel, multiday (synoptic), and
Authors
Sarah Knox, Sheel Bansal, Gavin McNicol, Karina Schafer, Cove Sturtevant, Masahito Ueyama, Alex Valach, Dennis Baldocchi, Kyle B. Delwiche, Ankur R. Desai, Eugenie S. Euskirchen, Jinxun Liu, Annalea Lohila, Avni Malhotra, Lulie Melling, William Riley, Benjamin R. K. Runkle, Jessica Turner, Rodrigo Vargas, Qing Zhu, Tuula Alto, Etienne Fluet-Chouinard, Mathias Goeckede, Joe Melton, Oliver Sonnentag, Timo Vesala, Eric Ward, Zhen Zhang, Sarah Feron, Zutao Ouyang, Angela C I Tang, Pavel Alekseychik, Mika Aurela, Gil Bohrer, David I. Campbell, Jiquan Chen, Housen Chu, Higo Dalmagro, Jordan P. Goodrich, Pia Gottschalk, Takashi Hirano, Hiroki Iwata, Gerald Jurasinski, Minseok Kang, Franziska Koebsch, Ivan Mammarella, Mats B. Nilsson, Keisuke Ono, Matthias Peichl, Olli Peltola, Youngryel Ryu, Torsten Sachs, Ayaka Sakabe, Jed Sparks, Eeva-Stiina Tuittila, George Vourlitis, Guan X Wong, Lisamarie Windham-Myers, Benjamin Poulter, Robert B. Jackson
The changes in species composition mediate direct effects of climate change on future fire regimes of boreal forests in northeastern China
Direct effects of climate change (i.e. temperature rise, changes in seasonal precipitation, wind patterns and atmospheric stability) affect fire regimes of boreal forests by altering fire behaviour, fire seasons and fuel moisture. Climate change also alters species composition and fuel characteristics, which subsequently alter fire regimes. However, indirect effects of climate change are often sim
Authors
Chao Huang, Hong S. He, Yu Liang, Todd Hawbaker, Paul D. Henne, Wenru Xu, Peng Gong, Zhiliang Zhu
Coastal wetland resilience, accelerated sea-level rise, and the importance of timescale
Recent studies have produced conflicting results as to whether coastal wetlands can keep up with present‐day and future sea‐level rise. The stratigraphic record shows that threshold rates for coastal wetland submergence or retreat are lower than what instrumental records suggest, with wetland extent that shrinks considerably under high rates of sea‐level rise. These apparent conflicts can be recon
Authors
Torbjorn Tornquist, Donald Cahoon, James A. Morris, John W. Day