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

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

As far as I am aware, there are no published reports of the blood parasites of birds of the High Rockies. Since environmental conditions are quite different in such regions, with very short summers, uniformly cold nights (often with heavy frost), and low daytime humidity combined with moderate warmt

Gunnison sage-grouse (Centrocercus minimus) distribution in North America has decreased over historical accounts and has received federal protection under the Endangered Species Act. We investigated captive-breeding of a captive-flock of Gunnison sage-grouse created from individuals reared in captiv

Mosquito species inhabiting a high mountain area (9000 to 12,000 feet) in south-central Colorado west of the Continental Divide comprised 11 Aedes, 4 Culiseta, 1 Culex, and 3 chaoborines. They can be placed by altitudinal associations in two major groups: 1) mountain species, subdivided into alpine

Abstkact. -Bracliijla^us i.s ciiircntK a inonotNiiic ^I'liu.s ol unct'itaiii oiitiiiis and known only from Iloloccne and late Raiicholabrean. A new species ot leporid is clescrii)ed from the early and middle Pleistocene (Irvinj^tonian) deposits of Poreiipine Cave, Park CountN; Colorado. Stratified d

AbstractThe historical role of fire in sagebrush (Artemisia tridentata) landscapes remains poorly understood, yet is important to inform management and conservation of obligate species such as the threatened Gunnison Sage‐grouse (GUSG; Centrocercus minimus). We reconstructed fire histories from tree

Journal Article Possible Impairment of Nest-Building of Hummingbirds by Acetate Leg Tags Get access Nickolas M. Waser, Nickolas M. Waser Department of Biological Sciences The University of Arizona Tucson, Arizona 85721 Rocky Mountain Biological Laboratory Crested Butte, Colorado 81224 Search for oth

Karlstrom et al. (2013) raise two issues in their Comment related to aspects of the discussion in our paper (Pederson et al., 2013) about the Lee’s Ferry record and incision in the Colorado Plateau. We synthesize evidence for the bull’s-eye pattern of incision over the past 105 yr, finding that it d

Nachev et al (Reports, 6 January 2017, p. 75) present dilute nectar in bat-pollinated plants as "paradoxical" because bats prefer concentrated nectar, but paradox disappears with realistic assumptions about nectar evolution. We argue that they make unrealistic assumptions about the cognitive abiliti

AbstractDissolved oxygen (DO) is critical for aquatic ecosystems, however, few studies have focused on the long‐term DO dynamics in hyporheic zones, which are a function of both transport (hydrologic exchange between river and hyporheic zone) and uptake by biogeochemical reactions or respiration. We

The production and structure of animal signals may depend on an individual’s health status and may provide more than one type of information to receivers. While alarm calls are not typically viewed as health condition dependent, recent studies have suggested that their structure, and pos- sibly thei

The theme of the 2004 GSA Annual Meeting and Exposition, "Geoscience in a Changing World," covers both new and traditional areas of the earth sciences. The Front Range of the Rocky Mountains and the High Plains preserve an outstanding record of geological processes from Precambrian through Quaternar

Biogeochemical processes capable of altering global carbon systems occur frequently in Earth’s Critical Zone–the area spanning from vegetation canopy to saturated bedrock–yet many of these phenomena are difficult to detect. Observation of these processes is limited by the seasonal inaccessibility of