Climate Research and Development Program

Publications

Listed here are the most recent publications, reports and articles by the Climate R&D program.

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Filter Total Items: 674
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Year Published: 2019

Digital mapping of ecological land units using a nationally scalable modeling framework

Ecological site descriptions (ESDs) and associated state-and-transition models (STMs) provide a nationally consistent classification and information system for defining ecological land units for management applications in the United States. Current spatial representations of ESDs, however, occur via soil mapping and are therefore confined to the...

Maynard, Jonathan J.; Nauman, Travis W.; Salley, Shawn W.; Bestelmeyer, Brandon T.; Duniway, Michael C.; Talbot, Curtis J.; Brown, Joel R.

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Year Published: 2019

Rapid broad-scale ecosystem changes and their consequences for biodiversity

Biodiversity contributes to and depends on ecosystem structure and associated function. Ecosystem structure, such as the amount and type of tree cover, influences fundamental abiotic variables such as near-ground incoming solar radiation (e.g., Royer et al. 2011), which in turn affects species and associated biodiversity (e.g., Trotter et al. 2008...

Breshears, David D.; Field, Jason P.; Law, Darin J.; Villegas, Juan C.; Allen, Craig D.; Cobb, Neil S.; Bradford, John B.
Breshears, D.D., Field, J.P., Law, D.J., Villegas, J.C., Allen, C.D., Cobb, N.S., and Bradford, J.B., 2019, Rapid broad-scale ecosystem changes and their consequences for biodiversity, in Lovejoy, T.E., and Lee, H., eds., Biodiversity and climate change--Transforming the biosphere: New Haven, Yale University Press, p. 80-90.

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Year Published: 2019

Negative impacts of summer heat on Sierra Nevada tree seedlings

Understanding the response of forests to climate change is important for predicting changes in biodiversity and ecosystem services, including carbon storage. Seedlings represent a key demographic stage in these responses, because seedling establishment is necessary for population persistence and spread, and because the conditions allowing...

Moran, Emily V; Das, Adrian J.; Keeley, Jon; Stephenson, Nathan L.

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Year Published: 2019

Spatial patterns of meadow sensitivities to interannual climate variability in the Sierra Nevada

Conservation of montane meadows is a high priority for land and water managers given their critical role in buffering the effects of climate variability and their vulnerability to increasing temperatures and evaporative demands. Recent advances in cloud computing have provided new opportunities to examine ecological responses to climate...

Christine M. Albano; Meredith L. McClure; Shana E. Gross; Kitlasten, Wesley; Soulard, Christopher; Charles Morton; Justin Huntington

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Year Published: 2019

Late Quaternary paleohydrology of desert wetlands and pluvial lakes in the Soda Lake basin, central Mojave Desert, California (USA)

Sediment cores taken near extant springs along the western margin of Soda Lake playa, as well as from the playa center, reveal dramatic hydrologic changes that occurred in the central Mojave Desert during the late Quaternary. Results of stratigraphic, chronologic, physical, chemical, and microfossil analyses of seven cores, ranging in length from...

Honke, Jeffrey S.; Pigati, Jeffrey S.; Wilson, J.; Bright, J.; Goldstein, H.L.; Skipp, Gary L.; Reheis, M.C.; Havens, J. C.

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Year Published: 2019

Thin-layer sediment addition to an existing salt marsh to combat sea-level rise and improve endangered species habitat in California, USA

Current tidal marsh elevations and their accretion rates are important predictors of vulnerability to sea-level rise. When tidal marshes are at risk, adaptation measures, such as sediment addition to increase elevations, can be implemented to prevent degradation and loss. In 2016, wildlife managers prescribed a thin-layer sediment addition of...

Thorne, Karen M.; Freeman, Chase M.; Rosencranz, Jordan A.; Ganju, Neil Kamal; Guntenspergen, Glenn R.

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Year Published: 2019

Late Quaternary vegetation development following deglaciation of northwestern Alexander Archipelago, Alaska

The Cordilleran Ice sheet covered most of southeastern Alaska during the Last Glacial Interval (LGI: Marine Isotope Stage 2). Ice began to recede from western Alexander Archipelago ~17,000 + 700 yr BP. In this study pollen analysis and radiocarbon dating of three sediment cores were used to reconstruct, for the first time, the postglacial...

Thomas A. Ager
Ager, T. (2019). Late Quaternary vegetation development following deglaciation of northwestern Alexander Archipelago, Alaska

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Year Published: 2019

Guidance for assessing interregional ecoystem service flows

Ecosystem services (ES) assessments commonly focus on a specific biophysical region or nation and take its geographic borders as the system boundary. Most geographical regions are, however, not closed systems but are open and telecoupled with other regions through ES imports and exports, which are mediated by fluxes of matter, energy and...

Koellner, Thomas; Bonn, Aletta; Arnhold, Sebastian; Bagstad, Kenneth J.; Friedman, Dor; Guerra, Carlos; Kastner, Thomas; Kissinger, Meidad; Kleeman, Janina; Kuhlicke, Christian; Liu, Jianguo; Lopez-Hoffman, Laura; Marques, Alexandra; Martin-Lopez, Berta; Schulp, Catharina J. E.; Wolff, Sarah; Schröter, Matthias

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Year Published: 2019

Salinity yield modeling of the Upper Colorado River Basin using 30-meter resolution soil maps and random forests

Salinity loading in the Upper Colorado River Basin (UCRB) costs local economies upwards of $300 million US dollars annually. Salinity source models have generally included coarse spatial data to represent non‐agriculture sources. We developed new predictive soil property and cover maps at 30 m resolution to improve source representation in...

Nauman, Travis; Ely, Christopher; Miller, Matthew; Duniway, Michael

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Year Published: 2019

Hydrologic lag effects on wetland greenhouse gas fluxes

Hydrologic margins of wetlands are narrow, transient zones between inundated and dry areas. As water levels fluctuate, the dynamic hydrology at margins may impact wetland greenhouse gas (GHG) fluxes that are sensitive to soil saturation. The Prairie Pothole Region of North America consists of millions of seasonally-ponded wetlands that are ideal...

Tangen, Brian; Bansal, Sheel

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Year Published: 2019

An integrated framework for ecological drought across riverscapes of North America

Climate change is increasing the severity and extent of extreme droughts events, posing a critical threat to freshwater ecosystems, particularly with increasing human demands for diminishing water supplies. Despite the importance of drought as a significant driver of ecological and evolutionary dynamics, current understanding of drought...

Kovach, Ryan; Dunham, Jason B.; Al-Chokhachy, Robert; Snyder, Craig; Beever, Erik A.; Pederson, Gregory T.; Lynch, Abigail; Hitt, Nathaniel P.; Konrad, Christopher P.; Jaeger, Kristin; Rea, Alan H.; Sepulveda, Adam J.; Lambert, Patrick M.; Stoker, Jason M.; Giersch, J. Joseph; Muhlfeld, Clint C.

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Year Published: 2019

Global patterns of tree stem growth and stand aboveground wood production in mangrove forests

Mangrove forests provide important ecological and economic services including carbon sequestration and storage. The conservation and restoration of mangroves are expected to play an important role in mitigating climate change, and understanding the factors influencing mangrove stem growth and wood production are important in predicting and...

Xiong, Yanmei; Cakir, Roxelane; Phan, Sang Minh; Ola, Anne; Krauss, Ken; Lovelock, Catherine E.