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: 673
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Year Published: 2021

Mortality predispositions of conifers across western USA

Conifer mortality rates are increasing in western North America, but the physiological mechanisms underlying this trend are not well understood.We examined tree‐ring‐based radial growth along with stable carbon (C) and oxygen (O) isotope composition (δ13C and δ18O, respectively) of dying and surviving conifers at eight old‐growth forest sites...

Wang, Wenzhi; English, Nathan B.; Grossiord, Charlotte; Gessler, Arthur; Das, Adrian; Stephenson, Nathan L.; Baisan, Christopher H.; Allen, Craig D.; McDowell, Nate G.

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Year Published: 2020

Historically unprecedented Northern Gulf of Mexico hurricane activity from 650 to 1250 CE

Hurricane Michael (2018) was the first Category 5 storm on record to make landfall on the Florida panhandle since at least 1851 CE (Common Era), and it resulted in the loss of 59 lives and $25 billion in damages across the southeastern U.S. This event placed a spotlight on recent intense (exceeding Category 4 or 5 on the Saffir-Simpson Hurricane...

Rodysill, Jessica R. ; Donnelly, Jeffrey P.; Sullivan, Richard; Lane, Philip D.; Toomey, Michael; Woodruff, Jonathan D.; Hawkes, Andrea D.; MacDonald, Dana; d’Entremont, Nicole; McKeon, Kelly; Wallace, Elizabeth; van Hengstum, Peter J.

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Year Published: 2020

Soil respiration response to rainfall modulated by plant phenology in a montane meadow, East River, Colorado, USA

Soil respiration is a primary component of the terrestrial carbon cycle. However, predicting the response of soil respiration to climate change remains a challenge due to the complex interactions between environmental drivers, especially plant phenology, temperature, and soil moisture. In this study, we use a 1‐D diffusion‐reaction model to...

Winnick, Mathew; Lawrence, Corey R.; McCormick, Maeve; Druhan, Jennifer; Maher, Kate

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Year Published: 2020

Compounding effects of white pine blister rust, mountain pine beetle, and fire threaten four white pine species

Invasive pathogens and bark beetles have caused precipitous declines of various tree species around the globe. Here, we characterized long‐term patterns of mountain pine beetle (Dendroctonus ponderosae; MPB) attacks and white pine blister rust, an infectious tree disease caused by the pathogen, Cronartium ribicola. We focused on four dominant...

Dudney, Joan C; Nesmith, Jonathan C B; Cahill, Matthew C; Cribbs, Jennifer E; Duriscoe, Dan M; Das, Adrian; Stephenson, Nathan L.; Battles, John J.

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Year Published: 2020

Changes in ecosystem nitrogen and carbon allocation with black mangrove (Avicennia germinans) encroachment into Spartina alterniflora salt marsh

Increases in temperature are expected to facilitate encroachment of tropical mangrove forests into temperate salt marshes, yet the effects on ecosystem services are understudied. Our work was conducted along a mangrove expansion front in Louisiana (USA), an area where coastal wetlands are in rapid decline due to compounding factors, including...

Macy, Aaron; Osland, Michael; Cherry, Julia A; Cebrian, Just

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Year Published: 2020

Climate- versus geographic-dependent patterns in the spatial distribution ofmacroinvertebrate assemblages in New World depressional wetlands

Analyses of biota at lower latitudes may presage impacts of climate change on biota at higher latitudes. Macroinvertebrate assemblages in depressional wetlands may be especially sensitive to climate change because weather‐related precipitation and evapotranspiration are dominant ecological controls on habitats, and organisms of depressional...

Stenert, C.; Pires, M.M.; Epele, L.B.; Grech, M.G.; Maltchik, L.; Mclean, Kyle I.; Mushet, David M.; Batzer, D.P.

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Year Published: 2020

High sensitivity of Bering Sea winter sea ice to winter insolation and carbon dioxide over the last 5,500 years

Anomalously low winter sea ice extent and early retreat in CE 2018 and 2019 challenge previous notions that winter sea ice in the Bering Sea has been stable over the instrumental record, although long-term records remain limited. Here, we use a record of peat cellulose oxygen isotopes from St. Matthew Island along with isotope-enabled general...

Jones, Miriam C.; Berkelhammer, Max ; Keller, Katherine; Yoshimura, Kei; Wooller, Matthew J.

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Year Published: 2020

Trace and rare earth elements determination in milk whey from the Veneto region, Italy

Multi-element analyses determine the content of 17 trace elements (Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Cd, Cs, Ba, Pb, U) and 14 rare earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Lu, Y) in whey samples from cow and goat milk by inductively coupled plasma mass spectrometry and inductively coupled plasma-sector field...

Tedesco, Raffaelo; Villoslada Hidalgo, Maria del Carmen; Varde, Massimiliano; Kehrwald, Natalie; Barbante, Carlo; Cozzi, Giulio

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Year Published: 2020

Wetland and hydric soils

Soil and the inherent biogeochemical processes in wetlands contrast starkly with those in upland forests and rangelands. The differences stem from extended periods of anoxia, or the lack of oxygen in the soil, that characterize wetland soils; in contrast, upland soils are nearly always oxic. As a result, wetland soil biogeochemistry is...

Trettin, Carl; Kolka, Randall; Marsh, Anne; Bansal, Sheel; Lilleskov, Eric; Megonigal, Patrick; Stelk, Marla; Lockaby, Graeme; D'Amore, David; MacKenzie, Richard A.; Tangen, Brian; Chimner, Rodney A.; Gries, James

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Year Published: 2020

Dendrochronology of a rare long-lived mediterranean shrub

Ceanothus verrucosus (CEVE) is a globally rare, long-lived, chaparral shrub endemic to coastal southern California (CA) and northern Mexico. There is concern for CEVE persistence because of habitat loss, fire, and climate change, yet little is known about basic features of the plant, including whether it contains annual rings, plant age, and...

Margolis, Ellis; Lombardo, Keith; Smith, Andrew E.

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Year Published: 2020

Holocene paleoclimate change in the western US: The importance of chronology in discerning patterns and drivers

Sediment in lakes and meadows forms a powerful archive that can be used to reconstruct environmental change through time. Reconstructions of lake level, of chemical, biological, and hydrological conditions, and of surrounding vegetation provide detailed information about past climate conditions, both locally and regionally. Indeed, most of our...

Zimmerman, Susan; Wahl, David

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Year Published: 2020

Large stocks of peatland carbon and nitrogen are vulnerable to permafrost thaw

Over many millennia, northern peatlands have accumulated large amounts of carbon and nitrogen, thus cooling the global climate. Over shorter timescales, peatland disturbances can trigger losses of peat and release of greenhouses gases. Despite their importance to the global climate, peatlands remain poorly mapped, and the vulnerability of...

Hugelius, Gustaf; Loisel, Julie; Chadburn, Sarah; Jackson, Robert B.; Jones, Miriam C.; MacDonald, Glen; Marushchak, Maija; Olefeldt, David; Packalen, Maara S.; Siewert, Matthias B.; Treat, Claire C.; Turetsky, Merritt; Voigt, Carolina; Yu, Zicheng