Publications
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A comparison of bat activity at low and high elevations in the Black Hills of western Washington A comparison of bat activity at low and high elevations in the Black Hills of western Washington
We examined the differences in activity patterns and community structure of bats between low (
Authors
J. Erickson, M. J. Adams
Comparison of ion-exchange resin counterions in the nutrient measurement of calcareous soils: Implications for correlative studies of plant-soil relationships Comparison of ion-exchange resin counterions in the nutrient measurement of calcareous soils: Implications for correlative studies of plant-soil relationships
For more than 40 years, ion-exchange resins have been used to characterize nutrient bioavailability in terrestrial and aquatic ecosystems. To date, however, no standardized methodology has been developed, particularly with respect to the counterions that initially occupy resin exchange sites. To determine whether different resin counterions yield different measures of soil nutrients and...
Authors
S. K. Sherrod, Jayne Belnap, M. E. Miller
Transitions in rangeland evaluations: A review of the major transitions in rangeland evaluations during the last 25 years and speculation about future evaluations Transitions in rangeland evaluations: A review of the major transitions in rangeland evaluations during the last 25 years and speculation about future evaluations
No abstract available.
Authors
David A. Pyke, Jeffrey E. Herrick
Biological soil crusts in deserts: A short review of their role in soil fertility, stabilization, and water relations Biological soil crusts in deserts: A short review of their role in soil fertility, stabilization, and water relations
Cyanobacteria and cyanolichens dominate most desert soil surfaces as the major component of biological soil crusts (BSC). BSCs contribute to soil fertility in many ways. BSC can increase weathering of parent materials by up to 100 times. Soil surface biota are often sticky, and help retain dust falling on the soil surface; this dust provides many plant-essential nutrients including N, P...
Authors
Jayne Belnap
Rana cascadae (Cascade frog). Cannibalism Rana cascadae (Cascade frog). Cannibalism
No abstract available.
Authors
C.J. Rombough, D.J. Jordan, Christopher A. Pearl
PRAIRIEMAP: A GIS database for prairie grassland management in western North America PRAIRIEMAP: A GIS database for prairie grassland management in western North America
The USGS Forest and Rangeland Ecosystem Science Center, Snake River Field Station (SRFS) maintains a database of spatial information, called PRAIRIEMAP, which is needed to address the management of prairie grasslands in western North America. We identify and collect spatial data for the region encompassing the historical extent of prairie grasslands (Figure 1). State and federal agencies...
Authors
Water Resources Division U.S. Geological Survey
A Framework for Long-term Ecological Monitoring in Olympic National Park: Prototype for the Coniferous Forest Biome A Framework for Long-term Ecological Monitoring in Olympic National Park: Prototype for the Coniferous Forest Biome
This report is the result of a five-year collaboration between scientists of the U.S. Geological Survey Forest and Rangeland Ecosystem Science Center, Olympic Field Station, and the natural resources staff of Olympic National Park to develop a comprehensive strategy for monitoring natural resources of Olympic National Park. Olympic National Park is the National Park Serviceʼs prototype...
Authors
Kurt Jenkins, Andrea Woodward, Ed Schreiner
Effects of soil amendments on germination and emergence of downy brome (Bromus tectorum) and Hilaria jamesii Effects of soil amendments on germination and emergence of downy brome (Bromus tectorum) and Hilaria jamesii
Downy brome is an introduced Mediterranean annual grass that now dominates millions of hectares of western U.S. rangelands. The presence of this grass has eliminated many native species and accelerated wildfire cycles. The objective of this study was to identify soil additives that allowed germination but inhibited emergence of downy brome, while not affecting germination or emergence of...
Authors
J. Belnap, S. K. Sherrod, M. E. Miller
Large wood recruitment and redistribution in headwater streams in the southern Oregon Coast Range, U.S.A Large wood recruitment and redistribution in headwater streams in the southern Oregon Coast Range, U.S.A
Large wood recruitment and redistribution mechanisms were investigated in a 3.9 km2 basin with an old-growth Pseudotsuga menziesii (Mirb.) Franco and Tsuga heterophylla (Raf.) Sarg. forest, located in the southern Coast Range of Oregon. Stream size and topographic setting strongly influenced processes that delivered wood to the channel network. In small colluvial channels draining steep...
Authors
Christine L. May, Robert E. Gresswell
Organochlorine pesticides in eggs of brids of prey from the Stavropol Region, Russia Organochlorine pesticides in eggs of brids of prey from the Stavropol Region, Russia
No abstract available.
Authors
Charles J. Henny, V.M. Galushin, Alexander N. Khokhlov, Ljubor V. Malovichko, M.P. Iijukh
Food habits of the southwestern willow flycatcher during the nesting season Food habits of the southwestern willow flycatcher during the nesting season
The food habits and prey base of the endangered Southwestern Willow Flycatcher (Empidonax traillii extimus) are not well known. We analyzed prey remains in 59 fecal samples from an intensively-studied population of this flycatcher at the Kern River Preserve in southern California. These samples were collected during the nesting season in 1996 and 1997 from adults caught in mist nets, and...
Authors
Charles A. Drost, Eben H. Paxton, Mark K. Sogge, Mary J. Whitfield
The Willet (Catoptrophorus semipalmatus) The Willet (Catoptrophorus semipalmatus)
No abstract available.
Authors
P.M. Sanzenbacher, Susan M. Haig