Search Results - "Wedin, David A."

Land-Use Type as a Driver of Large Wildfire Occurrence in the U.S. Great Plains by Donovan, Victoria M., Wonkka, Carissa L., Wedin, David A., Twidwell, Dirac

“…Wildfire activity has surged in North America’s temperate grassland biome. Like many biomes, this system has undergone drastic land-use change over the last…”
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Collapse, reorganization, and regime identity: breaking down past management paradigms in a forest-grassland ecotone by Donovan, Victoria M., Roberts, Caleb P., Wonkka, Carissa L., Uden, Daniel R., Angeler, David G., Allen, Craig R., Wedin, David A., Drijber, Rhae A., Twidwell, Dirac

“…The identity of an ecological regime is central to modern resilience theory and our understanding of how systems collapse and reorganize following disturbance…”
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Targeted grazing and mechanical thinning enhance forest stand resilience under a narrow range of wildfire scenarios by Donovan, Victoria M., Roberts, Caleb P., Fogarty, Dillon T., Wedin, David A., Twidwell, Dirac

“…Increasing wildfire activity has spurred ecological resilience‐based management that aims to reduce the vulnerability of forest stands to wildfire by reducing…”
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Long-term dynamics of pine and hardwood litter in contrasting environments: toward a global model of decomposition by Gholz, Henry L., Wedin, David A., Smitherman, Stephen M., Harmon, Mark E., Parton, William J.

“…Summary We analysed data on mass loss after five years of decomposition in the field from both fine root and leaf litters from two highly contrasting trees,…”
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Ponderosa Pine Regeneration, Wildland Fuels Management, and Habitat Conservation: Identifying Trade-Offs Following Wildfire by Victoria M. Donovan, Caleb P. Roberts, Carissa L. Wonkka, David A. Wedin, Dirac Twidwell

“…Increasing wildfires in western North American conifer forests have led to debates surrounding the application of post-fire management practices. There is a…”
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Influence of nitrogen loading and species composition on the carbon balance of grasslands by Wedin, David A., Tilman, David

“…In a 12-year experimental study of nitrogen (N) deposition on Minnesota grasslands, plots dominated by native warm-season grasses shifted to low-diversity…”
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Effect of vegetation on the temporal stability of soil moisture in grass-stabilized semi-arid sand dunes by Wang, Tiejun, Wedin, David A., Franz, Trenton E., Hiller, Jeremy

“…•Temporal stability of soil moisture (TS SM) in root zone is affected by vegetation.•Interseasonal changes in TS SM are related to plant phenology.•Interannual…”
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Ecophysiology of Two Native Invasive Woody Species and Two Dominant Warm‐Season Grasses in the Semiarid Grasslands of the Nebraska Sandhills by Eggemeyer, Kathleen D., Awada, Tala, Wedin, David A., Harvey, F. Edwin, Zhou, Xinhua

“…Populations ofPinus ponderosaandJuniperus virginianaare expanding into semiarid Sandhills grasslands in Nebraska. To evaluate the physiological basis of their…”
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Nutrients and environment influence arbuscular mycorrhizal colonization both independently and interactively in Schizachyrium scoparium by Frater, Paul N., Borer, Elizabeth T., Fay, Philip A., Jin, Virginia, Knaeble, Brian, Seabloom, Eric, Sullivan, Lauren, Wedin, David A., Harpole, W. Stanley

“…Background and aims Arbuscular mycorrhizal fungi (AMF) are important for plant nutrient and water acquisition. Much is known about how nutrient addition and…”
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The influence of wildfire on invasive plant abundance and spatial structure in eastern ponderosa pine savanna by Donovan, Victoria M., Wonkka, Carissa L., Roberts, Caleb P., Wedin, David A., McGranahan, Devan Allen, Twidwell, Dirac

“…Fire can alter the trajectory for plant invasions; however, invasive plant responses to fire vary among regions and species. It is unclear how recent increases…”
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Grassland productivity limited by multiple nutrients by Fay, Philip A., Prober, Suzanne M., Harpole, W. Stanley, Knops, Johannes M. H., Bakker, Jonathan D., Borer, Elizabeth T., Lind, Eric M., MacDougall, Andrew S., Seabloom, Eric W., Wragg, Peter D., Adler, Peter B., Blumenthal, Dana M., Buckley, Yvonne M., Chu, Chengjin, Cleland, Elsa E., Collins, Scott L., Davies, Kendi F., Du, Guozhen, Feng, Xiaohui, Firn, Jennifer, Gruner, Daniel S., Hagenah, Nicole, Hautier, Yann, Heckman, Robert W., Jin, Virginia L., Kirkman, Kevin P., Klein, Julia, Ladwig, Laura M., Li, Qi, McCulley, Rebecca L., Melbourne, Brett A., Mitchell, Charles E., Moore, Joslin L., Morgan, John W., Risch, Anita C., Schütz, Martin, Stevens, Carly J., Wedin, David A., Yang, Louie H.

“…Terrestrial ecosystem productivity is widely accepted to be nutrient limited 1 . Although nitrogen (N) is deemed a key determinant of aboveground net primary…”
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Assessment of Selected Antibiotic Resistances in Ungrazed Native Nebraska Prairie Soils by Durso, Lisa M., Wedin, David A., Gilley, John E., Miller, Daniel N., Marx, David B.

“…The inherent spatial heterogeneity and complexity of antibiotic‐resistant bacteria and antibiotic resistance (AR) genes in manure‐affected soils makes it…”
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Seasonal changes in depth of water uptake for encroaching trees Juniperus virginiana and Pinus ponderosa and two dominant C₄ grasses in a semiarid grassland by Eggemeyer, Kathleen D, Awada, Tala, Harvey, F. Edwin, Wedin, David A, Zhou, Xinhua, Zanner, C. William

“…We used the natural abundance of stable isotopic ratios of hydrogen and oxygen in soil (0.05-3 m depth), plant xylem and precipitation to determine the…”
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Resilience of Sandhills Grassland to Wildfire During Drought by Arterburn, Jack R., Twidwell, Dirac, Schacht, Walter H., Wonkka, Carissa L., Wedin, David A.

“…In the Nebraska Sandhills, one of the largest contiguous grassland ecoregions remaining in North America, sandy textured soils are stabilized by fine root…”
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Molecular Diversity of Arbuscular Mycorrhizae in Roots of Juniperus virginiana Invasive to Grasslands by Liang, Zhanbei B., Lee, Donald J., Dweikat, Ismail M., Wedin, David A., Yuen, Gary Y., Drijber, Rhae A.

“…Core Ideas Glomus spp. dominate the arbuscular mycorrhizal fungal (AMF) community in eastern red cedar (ERC) roots. Young seedlings harbor the most diverse…”
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Fall Conservation Deep Tillage Stabilizes Maize Residues into Soil Organic Matter by Wingeyer, Ana B, Walters, Daniel T, Drijber, Rhae A, Olk, Daniel C, Arkebauer, Timothy J, Verma, Shashi B, Wedin, David A, Francis, Charles A

“…Efforts for increasing soil organic matter (SOM) content under agricultural systems have primarily focused on management practices that reduce exposure of SOM…”
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Fire legacies in eastern ponderosa pine forests by Roberts, Caleb P., Donovan, Victoria M., Wonkka, Carissa L., Powell, Larkin A., Allen, Craig R., Angeler, David G., Wedin, David A., Twidwell, Dirac

“…Disturbance legacies structure communities and ecological memory, but due to increasing changes in disturbance regimes, it is becoming more difficult to…”
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Hydrological behaviour of grasslands of the Sandhills of Nebraska: water and energy-balance assessment from measurements, treatments, and modelling by Sridhar, Venkataramana, Wedin, David A.

“…Understanding energy and water balance processes in the Sandhills is crucial to assess the land–atmosphere feedback effects. The Sandhills located in western…”
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Relationships between Wildfire Burn Severity, Cavity-Nesting Bird Assemblages, and Habitat in an Eastern Ponderosa Pine Forest by Keele, Emma C, Donovan, Victoria M, Roberts, Caleb P, Nodskov, Sarah M, Wonkka, Carissa L, Allen, Craig R, Powell, Larkin A, Wedin, David A, Angeler, David G, Twidwell, Dirac

“…Historically, eastern ponderosa pine (Pinus ponderosa) forests were described as sparse patches of old-growth trees maintained by frequent, low-severity fires;…”
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Restoring Fire-Grazer Interactions to Pursue Heterogeneity in Sandhills Prairie by Arterburn, Jack R., Twidwell, Dirac, Wonkka, Carissa L., Schacht, Walter H., Wedin, David A.

“…Heterogeneity has emerged as a fundamental principle for grassland management and the importance of environmental heterogeneity for biological diversity has…”
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