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Keyword: habitat quality

Effects of habitat quality and ambient hyporheic flows on salmon spawning site selection

Publications Posted on: September 12, 2016
Understanding the role of stream hydrologic and morphologic variables on the selection of spawning sites by salmonid fishes at high resolution across broad scales is needed for effective habitat restoration and protection.

Trans-kalahari predator conservation project

Science Spotlights Posted on: August 17, 2016
Populations of large carnivores are declining globally, and in Africa the ranges of lions, leopards, wild dogs and spotted hyenas have contracted dramatically in the past few decades. The goal of this project is to assess current population distribution and connectivity for these species across a vast trans-boundary region of Southern Africa, comprising the Kavango-Zambeizi Trans-Frontier Conservation Area (KAZA), which consists of most of Botswana as well as portions of Zambia, Angola, Zimbabwe, Angola and South Africa.

Habitat quality for the northern goshawk

Projects Posted on: October 14, 2015
The northern goshawk (Accipiter gentilis) is an apex predator in most forests in the United States and Canada. Natural resource managers need information on how 3-dimensional forest structure impacts habitat quality for northern goshawk. Scientists with the Rocky Mountain Research Station are addressing this need by combining 21 years of demographic research with recently acquired high-resolution LiDAR data.

Reproductive responses of an apex predator to changing climatic conditions

Publications Posted on: October 05, 2015
Apex predators are ideal subjects for evaluating the effects of changing climatic conditions on the productivity of forested landscapes, because the quality of their breeding habitat depends primarily on the availability of resources at lower trophic levels.

Ecology of Mexican spotted owls

Media Gallery Posted on: October 05, 2015
RMRS scientists have been involved in Mexican Spotted Owl recovery efforts since before the species was listed as Threatened in 1993. Today, our scientists are developing new knowledge of this owl, synthesizing existing information, and working with land managers to integrate habitat requirements for the owl and its important prey species into management plans.

Ecology of the Mexican Spotted Owl

Projects Posted on: August 14, 2015
Rocky Mountain Research Station (RMRS) scientists have been at the forefront of efforts to understand the ecology of the threatened Mexican spotted owls (Strix occidentalis lucida) for more than 25 years. These scientists and their cooperators have produced most of the existing scientific information on this species. Today, RMRS scientists continue to be actively involved in developing new knowledge on this owl, synthesizing existing information, and working with managers to integrate habitat requirements for the owl and its important prey species into land management plans.

Patch size but not short-term isolation influences occurrence of westslope cutthroat trout above human-made barriers

Publications Posted on: September 15, 2014
Habitat fragmentation in aquatic systems has led to widespread isolation of stream fishes. Metapopulation theory predicts that persistence is directly related to local patch size and its characteristics, but because these relationships tend to be taxon-specific, empirical data are important. We assembled 246 observations of occurrence of westslope cutthroat trout (WCT), a taxon of concern in the western U.S.

Invasion by nonnative brook trout in Panther Creek, Idaho: Roles of habitat quality, connectivity, and biotic resistance

Publications Posted on: September 04, 2007
Theoretical models suggest the invasion of nonnative freshwater species is facilitated through the interaction of three factors: biotic resistance, habitat quality, and connectivity. We measured variables that represented each component to determine which were associated with small (150 mm) brook trout occurrence in Panther Creek, a tributary to the Salmon River, Idaho.

Territories of flammulated owls (Otus flammeolus): Is occupancy a measure of habitat quality?

Publications Posted on: October 23, 2006
Annual territory occupancy by Flammulated Owls (Otus flammeolus) in Colorado was evaluated from 1981-1996. Fourteen territories occurred within a 452 ha study area. Each year, three to six territories were occupied by breeding pairs and three to seven were occupied by unpaired males.