Abstract In mountainous watersheds, floodplain sediments are typically characterized by gravel bed layers capped by an overlying soil unit that serves as a hotspot for biogeochemical reactivity. However, the influence of soil biogeochemistry on gravel bed underflow composition remains unclear, espec

In group-living species, reproductive variation among individuals of the same sex is widespread. By identifying the mechanisms underlying this reproductive skew, we gain fundamental insights into the evolution and maintenance of sociality. A common mechanism, social control, is typically studied by

Comparison of arctic ground squirrel hemoglobin α-chain with the amino-terminal 25 residues of the marmot shows one amino acid difference at position 13, which is similar to that of other rodent α-chains.

Although we found some evidence for the effect of a biotic interaction depending on abiotic conditions, it was only for one aspect of reproduction in one species, and it was in an unexpected direction. Our work highlights interactions between the abiotic and biotic components of the environment as a

Functional trait diversity determines if ecosystem processes are sensitive to shifts in species abundances or composition. For example, trait variation suggests detritivores process detritus at different rates and make different contributions to whole- assemblage processing, which could be sensitive

Crop ScienceVolume 45, Issue 1 cropsci2005.0413 p. 413-413 Registrations Of Cultivars Registration of ‘Grand Mesa’ Pinto Bean M.A. Brick, Corresponding Author M.A. Brick mbrick@lamar.colostate.edu Dep. of Soil and Crop Sciences, Colorado State Univ., Ft. Collins, CO, 80523Corresponding author (mbric

When the editor-in-chief solicited historical perspective pieces based on old articles from The American Naturalist, the choice became easy because it let me focus on two 1970s articles that transformed the field I work in, realigned my own thinking, and showed me the direction of the next 30 years

AbstractThe North Fork of Clear Creek (NFCC), Colorado, is an acid‐mine‐drainage‐impacted stream typical of many mountain surface waters affected by historic metal mining in the western United States. The stream is devoid of fish primarily because of high metal concentrations in the water (e.g., cop

The nonconsumptive effects of predators on prey include behavioral, physiological, and life-history changes that reduce the risk of predation but have associated energetic or fitness costs to prey individuals and populations. Biologists have documented such changes for a wide array of predator–prey

Abstract Mountains create and enhance their own clouds, which both scatter and absorb shortwave radiation from the sun and absorb and re‐emit land surface and atmospheric longwave radiation. However, the impacts of clouds on the surface radiation balance in high elevation snowy mountain terrain are

Abstract Oxidative weathering of sedimentary rocks plays an important role in the global carbon cycle. Rhenium (Re) has been proposed as a tracer of rock organic carbon (OC petro ) oxidation. However, the sources of Re and its mobilization by hydrological processes remain poorly constrained. Here, w

The 1922 Colorado River Compact ignored available science and overallocated the river’s water, a decision whose effects reverberate today. Now there’s an opportunity to get things right.

The prairie rattlesnake, Crotalus viridis Rafinesque, 1818, is available in large numbers in Weld Co., Colorado, and since virtually no information was available on parasitism of C. viridis, additional studies were made.

The faunæ of high altitudes always posses a peculiar interest by virtue of the light they throw on problems of geographical distribution, and especially the distribution in ancient times of what is now a strictly Arctic and Alpine fauna. For this reason, the following lists of species, fragmentary a

The confused taxonomic history of prunophilus (Papilionaceae) is discussed and its affinities with the morphologically similar L. ammophilus and other putative relatives within the L. ornatus complex and morphologically similar complexes are elucidated. Chemosystematic evidence of alkaloid compariso