Land Change Science Program

Publications

Listed here are the most recent publications, reports and articles by the Land Change Science program.

Filter Total Items: 585
Publication Thumbnail
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

Publication Thumbnail
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.

Publication Thumbnail
Year Published: 2019

Effects of 21st century climate, land use, and disturbances on ecosystem carbon balance in California

Terrestrial ecosystems are an important sink for atmospheric carbon dioxide (CO2), sequestering ~30% of annual anthropogenic emissions and slowing the rise of atmospheric CO2. However, the future direction and magnitude of the land sink is highly uncertain. We examined how historical and projected changes in climate, land use, and ecosystem...

Sleeter, Benjamin M.; David Marvin; D. Richard Cameron; Selmants, Paul; LeRoy Westerling; Kreitler, Jason R.; Colin Daniel; Liu, Jinxun; Wilson, Tamara

Publication Thumbnail
Year Published: 2019

Jump-starting coastal wetland restoration: A comparison of marsh and mangrove foundation species

During coastal wetland restoration, foundation plant species play a critical role in creating habitat, modulating ecosystem functions, and supporting ecological communities. Following initial hydrologic restoration, foundation plant species can help stabilize sediments and jump-start ecosystem development. Different foundation species, however,...

Yando, Erik S.; Osland, Michael; Jones, Scott; Hester, Mark W.

Publication Thumbnail
Year Published: 2019

Establishment of Salsola tragus on aeolian sands: A Southern Colorado Plateau case study

Russian-thistle (Salsola tragus L.), is a nonnative, C4 photosynthesizing, annual plant that infests disturbed and natural areas in the arid U.S. Southwest. Land managers of natural areas may need to decide whether a S. tragus infestation is potentially harmful and whether it should be actively managed. One factor informing that decision is an...

Thomas, Kathryn A.; Hiza, Margaret

Publication Thumbnail
Year Published: 2019

Fire risk in revegetated bunchgrass communities Infested with Bromus tectorum

In rangeland ecosystems, invasive annual grass replacement of native perennials is associated with higher fire risk. Large bunchgrasses are often seeded to reduce cover of annuals such as Bromus tectorum L. (cheatgrass), but there is limited information about how revegetation reduces fire risk over the long-term. For this research note, we...

Link, Steve O; Hill, Randall W; Bansal, Sheel
Link, S., Hill, R., Bansal, S., Fire risk in revegetated Bunchgrass communities infested with Bromus tectorum: Rangeland Ecology and Management, 72(3) : 539-541

Publication Thumbnail
Year Published: 2019

New geochemical evidence for the origin of North America's largest dune field, the Nebraska Sand Hills, central Great Plains, USA

The Nebraska Sand Hills region is the largest dune field in North America and has diverse aeolian landforms. It has been active during both the late Pleistocene and late Holocene. Despite decades of study, the source of sediment for this large sand sea is still controversial. Here we...

Muhs, Daniel R.; Budahn, James R.

Publication Thumbnail
Year Published: 2019

Shrub persistence and increased grass mortality in response to drought in dryland systems

Droughts in the southwest United States have led to major forest and grassland die‐off events in recent decades, suggesting plant community and ecosystem shifts are imminent as native perennial grass populations are replaced by shrub‐ and invasive plant‐dominated systems. These patterns are similar to those observed in arid and semiarid systems...

Winkler, Daniel E.; Belnap, Jayne; Hoover, David L.; Reed, Sasha C.; Duniway, Michael C.

Publication Thumbnail
Year Published: 2019

Permafrost collapse is accelerating carbon release

This much is clear: the Arctic is warming fast, and frozen soils are starting to thaw, often for the first time in thousands of years. But how this happens is as murky as the mud that oozes from permafrost when ice melts.As the temperature of the ground rises above freezing, microorganisms break down organic matter in the soil. Greenhouse gases —...

Turetsky, Merritt R.; Abbott, Benjamin W.; Jones, Miriam; Walter Anthony, Katey; Olefeldt, David; Schuur, Edward A.G.; Koven, Charles; McGuire, A.D.; Grosse, Guido; Kuhry, Peter; Gustaf Hugelius; Lawrence, David M.; Gibson, Carolyn; Sannel, A. B. K.

Publication Thumbnail
Year Published: 2019

The dependence of hydroclimate projections in snow‐dominated regions of the western United States on the choice of statistically downscaled climate data

We assess monthly temperature and precipitation data produced by four statistically based techniques that were used to downscale general circulation models (GCMs) in the Climate Model Intercomparison Program Phase 5 (CMIP5) (Taylor et al., 2012). We drive a simple water-balance model with the downscaled data to demonstrate the effect of the...

Alder, Jay R.; Hostetler, Steven W.

Publication Thumbnail
Year Published: 2019

Modeling barrier island habitats using landscape position information

Barrier islands are dynamic environments because of their position along the marine–estuarine interface. Geomorphology influences habitat distribution on barrier islands by regulating exposure to harsh abiotic conditions. Researchers have identified linkages between habitat and landscape position, such as elevation and distance from shore, yet...

Enwright, Nicholas; Lei Wang; Wang, Hongqing; Osland, Michael; Feher, Laura; Borchert, Sinéad M.; Day, Richard

Publication Thumbnail
Year Published: 2019

Arctic vegetation, temperature, and hydrology during Early Eocene transient global warming events

Early Eocene global climate was warmer than much of the Cenozoic and was punctuated by a series of transient warming events or ‘hyperthermals’ associated with carbon isotope excursions when temperature increased by 4–8° C. The Paleocene-Eocene Thermal Maximum (PETM, ~55 Ma) and Eocene Thermal Maximum 2 (ETM2, 53.5 Ma) hyperthermals were of short...

Willard, Debra A.; Donders, Timme H; Reichgelt, Tammo; Greenwood, David R; Peterse, Francien; Sangiorgi, Francesca; Sluijs, Appy; Schouten, Stefan