Newly discovered lacustrine strata suggest that the most signifi cant episode of stream capture in the upper Colorado River system (western USA), namely the abandonment of Unaweep Canyon, probably involved a combination of headward erosion and lake spillover. The abandonment of Unaweep Canyon occurr

Climate and land use change are two of the largest drivers of worldwide biodiversity loss, but detecting drivers of insect decline is more complex. Online data sources can elucidate such responses while identifying systematic data gaps. Using a systematic review, we found 119 studies that document b

Abstract Insect herbivores that are tended by ants exhibit a range in host plant use from specialists to extreme generalists. Potential factors that may influence relative suitability of different host plants include the presence or absence of ants and the size of aggregations formed by nymphs feedi

Traditionally, models of resource extraction assume individuals act as if they form strategies based on complete information. In reality, gathering information about environmental parameters may be costly. An efficient information gathering strategy is to observe the foraging behavior of others, ter

Bird communities associated with differing cliff variables in Jefferson County, Colorado, were sampled using point counts. Species-specific density estimates and community diversity values were compared among four cliff types: small cliffs, medium cliffs, large cliffs, and non-cliff sites. A model s

A considerable quantity of fine specimen material has been obtained from a number of San Juan County mines and prospects during the last decade, in spite of the fact that commercial activity has almost ceased.

Evaluation of long-term temporal and spatial climatic change in mountainous regions is a critical challenge because of the interactive effects of multiple land and climatic factors and processes. Here we present the application of the statistical framework to the assessment of changes of climatic co

Journal Article Unusual Abundance of Peromyscus at Gothic, Colorado Get access Robert H. Catlett, Robert H. Catlett Dept. of Zoology, Univ. of California, Davis Search for other works by this author on: Oxford Academic Google Scholar Robert Z. Brown Robert Z. Brown Dept. of Zoology, Colorado College

Loss of sunlight-reflecting snow spurs evaporation and ebbs river flow

Journal Article Notes on the Mammals of the Gothic Region, Gunnison County, Colorado Get access James S. Findley, James S. Findley Museum of Natural History, University of Kansas, Lawrence, KansasDepartment of Zoology, Ohio State University, Columbus, Ohio Search for other works by this author on: O

Interment Behavior in the Yellow-Bellied Marmot (Marmota flaviventris) Get access Kenneth B. Armitage, Kenneth B. Armitage Division of Vertebrate Zoology and Bio-medical Museum, Institute for Medical Research, Kuala Lumpur, Malaysia Search for other works by this author on: Oxford Academic Google Sc

AbstractEvapotranspiration is arguably the least quantified component of the hydrologic cycle. We propose two complementary strategies for estimation of evapotranspiration rates and root water uptake profiles from soil‐moisture sensor‐array data. One is our implementation of ensemble Kalman filter (

Counts of montane Euphydryas editha along transects at Almont Summit, Colorado, show that males form a dense aggregation along a ridgetop with an estimated 30:1 (male:female) sex ratio. Fertilized females showed preference for subsites below the ridgetop at least as rich in oviposition plants but le

Non-native species have been widely transported, becoming components of ecosystems worldwide. In some cases this can change thestructure and function of an ecosystem. Crested wheatgrass (Agropyron cristatum, Agropyron spp.) was introduced into the Western U.S. inthe late 18th and early 19th centurie

Journal Article Hibernation in the Gunnison's Prairie Dog Get access Linda S. Rayor, Linda S. Rayor University of Kansas, Lawrence, KS 66045 Search for other works by this author on: Oxford Academic Google Scholar Alison K. Brody, Alison K. Brody University of Kansas, Lawrence, KS 66045 Search for o

Recruitment of juveniles is an important vital rate that influences population growth and is fundamental to understanding trends in population size. Estimates of recruitment are often focused on the period just after hatching (prefledgling stage), which is typically the lowest survival period and of

The long-term release of uranium from residual sources at former uranium mill sites was often not considered in prior conceptual and numerical models, as contaminant removal focused on meeting radiological standards. To determine the reactive transport parameters, column tests were completed with va

Experimental manipulation of the presence of ants in two different years indicated that the existence of ants had a positive effect on nymph numbers on both host plants, Chrysothamnus viscidiflorus and Wyethia spp, but not on WyethIA spp.