Sasha C Reed

Data and software code from two long-term experiments (1996-2011 and 2005-2018) at three sites on the Colorado Plateau of North America

These data were compiled to examine how climate change affects biocrust recovery from both physical and climate-induced disturbance. Objective(s) of our study were to uncover the trajectory of biological soil crust communities and soil stability following disturbance and under warming. These data represent biological soil crust surveys under 5 treatments at three sites. These data were collected at three sites: Arches National Park, Canyonlands National Park and Castle Valley. Data collection for a physical disturbance experiment where annual human-trampling occurred at the sites in Arches and Canyonlands began in 1996 and was concluded in 2018. Data collection for a 13-year full-factorial in situ climate manipulation...

Tags: 20 point-intercept frames, Arches National Park, Canyonlands National Park, Castle Valley, Climatology, All tags... Ecology, Geography, Information Sciences, PRISM Climate Data, Soil Sciences, USGS Science Data Catalog (SDC), Utah, air temperature, altered precipitation, biocrust recovery, biological soil crusts, biota, climate change, climate manipulation experiment, climate-induced disturbance, effects of climate change, field experiments, field inventory and monitoring, field sampling, field soil aggregate stability kitshuman-trampling, geoscientificInformation, habitat alteration and disturbance, in situ, long-term experiment data, mechanical disturbance, physical disturbance experiment, precipitation (atmospheric), soil sciences, soil stability, surveys, treatmtents, undisturbed control, warming, warming and altered precipitation, Fewer tags

CO2 concentrations and microbial biomass data derived from incubation experiments on soils collected at Arches National Park in 2017 and 2018

These data were compiled to improve our understanding of how water, carbon (C), nitrogen (N), and phosphorus (P) interact to regulate below ground carbon cycling. Objective(s) of our study were to evaluate how soil heterotrophic carbon cycling responded to inputs of water, C, N, and P individually and interactively on the Colorado Plateau. These data represent soil microbial and CO2 respiration responses to amendments of carbon, nitrogen, phosphorous, and water. Soils were collected at a study site located in Arches National Park in southeastern Utah on 14 August 2017 and again on 17 July 2018 from the upper 10 cm of the soil profile in open spaces among plant canopies after the biological soil crust layer (< 1...

Categories: Data; Tags: Arches National Park, Botany, CO2 respiration, Colorado Plateau, Ecology, All tags... Geography, Information Sciences, Moab, Soil Sciences, USGS Science Data Catalog (SDC), Utah, biogeochemical cycling, biological soil crusts, biota, carbon, carbon cycling, carbon dioxide, carbon flux, climate change, data release, dryland ecosystem, geoscientificInformation, heterotrophic soil respiration, laboratory experiments, microbial biomass, nitrogen, nutrients, phosphorus, resource limitation, soil efflux, soil incubation experiments, soil profile, soil resources, soil respiration, southeastern Utah, stoichiometry, terrestrial ecosystems, water, Fewer tags

Tropical forests contain > 50% of the world’s known species (Heywood 1995), 55% of global forest biomass (Pan et al. 2011), and exchange more carbon (C), water and energy with the atmosphere than any other ecosystem type (e.g., Saugier et al. 2001). Despite their importance, there is more uncertainty associated with predictions of how tropical forests will respond to warming than for any other biome (Randerson et al. 2009). This uncertainty is of global concern due to the large quantity of C cycled by these forests and the high potential for biodiversity loss. Given the importance of tropical forests, decision makers and land managers around the globe need increased predictive capacity regarding how tropical forests...

Categories: Data, Project; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Active, All Working Groups, Climate, Ecosystems, Forests, All tags... Land Resources, Fewer tags

Drought and wildfire pose enormous threats to the integrity of natural resources that land managers are charged with protecting. Recent observations and modeling forecasts indicate that these stressors will likely produce catastrophic ecosystem transformations, or abrupt changes in the condition of plants, wildlife, and their habitats, in regions across the country in coming decades. In this project, researchers will bring together land managers who have experienced various degrees of ecosystem transformation (from not yet experiencing any changes to seeing large changes across the lands they manage) to share their perspectives on how to mitigate large-scale changes in land condition. The team will conduct surveys...

Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2020, CASC, Drought, Drought, Drought, All tags... Drought, Fire and Extreme Weather, Drought, Fire and Extreme Weather, Drought, Fire and Extreme Weather, Extreme Weather, Extreme Weather, Fire, Fire, Fire, Projects by Region, Projects by Region, Science Tools for Managers, Science Tools for Managers, Science Tools for Managers, Social Science, Social Science, Social Science, Southwest, Southwest, Southwest CASC, Fewer tags

Using a multi-scale approach to synthesize measurements and models of C4 photosynthesis

Plants convert carbon dioxide into sugars for food during photosynthesis, and this provides food for all animal life. However, photosynthesis is inhibited when a plant’s enzymes use oxygen instead of carbon dioxide. To avoid this use of oxygen, some plants developed a photosynthetic adaptation – called C4 photosynthesis – to concentrate carbon dioxide around the enzymes. While less than 5% of plants use the C4 photosynthetic pathway, they make up ~20% of global terrestrial gross primary productivity. Due to their high productivity, C4 plants have a profound impact on ecosystems, economies, the carbon cycle, and our climate. Corn and sugarcane are both C4 plants, as are foundational western livestock and wildlife...

Categories: Project; Tags: Active, All Working Groups, Ecosystems, Land Resources