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Keyword: habitat

Factors affecting lifetime reproduction, longterm territory-specific reproduction, and estimation of habitat quality in northern goshawks

Publications Posted on: May 29, 2019
One measure of habitat quality is a species’ demographic performance in a habitat and the gold standard metric of performance is reproduction. Such a measure, however, may be misleading if individual quality is a fitness determinant.

Managing habitats for white-tailed deer in the Black Hills and Bear Lodge Mountains of South Dakota and Wyoming

Publications Posted on: February 26, 2019
The white-tailed deer is one of the most studied animals in North America, yet much of the available information has been derived in ecosystems different from the Black Hills. The Black Hills are unique in that the dominant species, ponderosa pine, has excellent regenerative abilities.

Landscape applications of machine learning: Comparing random forests and logistic regression in multi-scale optimized predictive modeling of American marten occurrence in northern Idaho, USA [Chapter 9]

Publications Posted on: December 04, 2018
The American marten (martes americana) is a species that is dependent on old conifer forest at middle to high elevations and is highly sensitive to habitat loss and fragmentation in a scale dependent fashion (e.g., Hargis et al. 1999; Wasserman et al. 2012a, b), and forest management is often influenced by considerations of how management will affect extent and pattern of marten habitat.

Ecology and conservation of lynx in the United States

Publications Posted on: August 01, 2018
Once found throughout the Rocky Mountains and forests of the northern states, the lynx now hides in pockets of its former range while feeding mostly on small animals like snowshoe hares. A team of government and university scientists review the newest scientific knowledge of this unique cat's history, distribution, and ecology.

Foraging ecology of Nuttall's Woodpecker

Publications Posted on: August 01, 2018
I studied relative abundances, foraging behavior, and foraging habitats of Nuttall's Woodpeckers (Picoides nuttallii# at three California locations. Population sizes at two areas in the foothills of the Sierra Nevada were larger than the population in the Tehachapi Mountains. These differences were attributed to habitat and weather differences.

Habitat relationships of amphibians and reptiles in California oak woodlands

Publications Posted on: August 01, 2018
We used pitfall traps and time-constrained searches to sample amphibians and reptiles and to describe their habitats in oak woodlands at three areas in California. We captured 766 individuals representing 15 species during pitfall trapping and 333 animals representing 15 species during the time-constrained searches. A total of 19 species were sampled.

Fishing for Climate Data: Salmon and Trout Habitat Forecasting

Documents and Media Posted on: May 09, 2018
Scientists at the Rocky Mountain Research Station’s Aquatic Sciences Lab compiled temperature records from more than a dozen natural resource agencies monitoring nearly 400 sites along large rivers in the northwestern United States to understand climate change impacts on salmon and trout river habitat. Document Type: Other Documents

How do wildfires and forest restoration efforts affect spotted owls?

Science Spotlights Posted on: February 06, 2018
High-severity wildfires are increasing and researchers are issuing different findings regarding wildfire impacts on spotted owls (Strix occidentalis), a threatened species that nests in mature, western forests with large trees and high canopy cover. Data from different studies show mixed responses of spotted owls to fire, but suggest that the effects of high-severity wildfires could be significant throughout the range of all three subspecies. The debate over owls, wildfire, and managed forest restoration needs further evaluation.

Quantifying loss and degradation of former American marten habitat due to the impacts of forestry operations and associated road networks in northern Idaho, USA [Chapter 12]

Publications Posted on: November 13, 2017
The global human population has more than tripled in the past century, reaching seven billion in 2012. The total footprint of humanity on the biosphere has more than doubled since the mid-twentieth century (Vitousek et al. 1997). Every year globally more than 14 million hectares of natural forest are converted to other land uses (FAO 2011), and many other ecosystems, such as temperate grasslands, are mere remnants of their original area.

Predicting above-ground density and distribution of small mammal prey species at large spatial scales

Publications Posted on: September 25, 2017
Grassland and shrub-steppe ecosystems are increasingly threatened by anthropogenic activities. Loss of native habitats may negatively impact important small mammal prey species. Little information, however, is available on the impact of habitat variability on density of small mammal prey species at broad spatial scales.