Shale bedrocks hold Earth’s largest carbon inventory. Although water is recognized for cycling elements through terrestrial environments, understanding how hydrology controls ancient rock carbon (Crock) release is limited. Here we measured depth- and season-dependent subsurface water fluxes and pore

This note derives from work done during an NSF predoctoral fellowship at the University of California, Santa Barbara (UCSB).

Protecting populations contending with co-occurring stressors requires a better understanding of how multiple early-life stressors affect the fitness of natural systems. However, the complexity of such research has limited its advancement and prevented us from answering new questions. In human studi

Report discussing a study on the Central City district and adjoining mining areas to determine the geology and economic importance of the uranium occurrences in the region.

The Collaborative Forest Landscape Restoration Program (CFLRP) created the conditions for translating the idea of collaborative adaptive management (CAM) into practice. In theory, CAM engages stakeholders to collectively ‘learn by doing’ through a continuous cycle of goal-setting, implementing, moni

At a former uranium mill site where tailings have been removed, prior work has determined several potential ongoing secondary uranium sources. These include locations with uranium sorbed to organic carbon, uranium in the unsaturated zone, and uranium associated with the presence of gypsum. To better

Abstract Global change drivers, such as nitrogen (N) deposition and non‐random species extinctions, may shift interactions among aboveground and belowground communities. However, tightly coupled interactions between aboveground and belowground organisms may buffer ecosystems to global change. Here,

Abstract Organisms living in seasonal environments are exposed to different environmental conditions as they transition from one life stage to the next across their life cycle. How different life stages respond to these varying conditions is a fundamental aspect of biology and is critical for unders

Abstract The San Luis Valley farming systems' project sought to identify improved technologies and better decision‐making capabilities for modest‐sized and limited‐resource farms. Characteristics of limited‐resource farms operated by Hispanic and Anglo families, which may or may not be associated wi

The kinetics of both swelling and shrinking of erythrocytes of the yellow-bellied marmot, golden-mantled ground squirrel, chipmunk, deer mouse, long-tailed vole, montane vole and western jumping mouse indicate that glycerol, ethylene glycol, urea and thiourea penetrate by means of facilitated diffus

Gel electrophoresis was used to obtain an estimate of the genetic similarity among populations of Euphydryas anicia, Euphydryas chalcedona, and Euphydryas colon in an effort to determine whether they should be considered separate species or arbitrary groupings of populations in a single polytypic sp

The precise age of terrestrial sediments in the Late Cretaceous Williams Fork Formation of western Colorado is poorly constrained due to a paucity of radiometric data. Sanidine and zircon dating of a volcanic ash encased in coal (i.e., the Coal Canyon ash) within the Cameo-Wheeler coal zone of the l

Maternal characteristics, social dynamics, and environmental factors can all influence reproduction and survival and shape trade-offs that might arise between these components of fitness. Short-lived mammals like the golden-mantled ground squirrel (GMGS; Callospermophilus lateralis ) tend to maximiz

Investigating individual-based habitat settlement decisions is a central theme in ecology, yet studies that quantify density-dependent habitat selection or tie fitness to resource selection decisions remain rare. We quantified habitat selection in golden-mantled ground squirrels ( Callospermophilus

Using the same methods as Britten, my associates and I ran Pollard transects during four flight seasons at Redcloud Peak and during three flight seasons (1991-93) at Mt. Uncompahgre and found that the populations are declining precipitously, genetic analyses show low heterozygosity, and no heroic ef

Gunnison sage‐grouse Centrocercus minimus has declined from their historic range and recent monitoring has provided evidence that some populations are continuing to decline. The evaluation of long‐term, population‐specific survival rates is important to assess population stability, and is necessary

The Rocky Mountain Biological Laboratory (RMBL; Colorado, USA) is the site for many research projects spanning decades, taxa, and research fields from ecology to evolutionary biology to hydrology and beyond. Climate is the focus of much of this work and provides important context for the rest. There

Abstract Floral microbes, including bacteria and fungi, alter nectar quality, thus changing pollinator visitation. Conversely, pollinator visitation can change the floral microbial community. Most studies on dispersal of floral microbes have focused on bees, ants or hummingbirds, yet Lepidoptera are