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Keyword: distribution

Wildland shrubs - their biology and utilization

Publications Posted on: July 31, 2019
Why Is a Shrub Symposium Needed? The answer to this question is obvious in view of the great volume of research that has been done with grasses and forbs while, in contrast, there has been considerably less research and development of shrubs. Yet, shrubs offer tremendous potentials for man's benefit in making the arid and semi - arid lands of the world more productive and useful.

Proceedings-research and management of bitterbrush and cliffrose in Western North America

Publications Posted on: February 26, 2019
Bitterbrush and cliff rose are perhaps the most widely managed shrubs in Western North America. This proceedings of 27 papers is a collection of our current knowledge on research and management of bitterbrush, cliffrose, and other rosaceous shrubs in Western North America.

The aquatic eDNAtlas project

Projects Posted on: February 08, 2018
The website provides: 1) A large list of supporting science behind eDNA sampling. 2) The recommended field protocol for eDNA sampling and the equipment loan program administered by the NGC. 3) A systematically-spaced sampling grid for all flowing waters of the U.S. in a downloadable format that includes unique database identifiers and geographic coordinates for all sampling sites. Available for download in an Geodatabase or available by ArcGIS Online map. This sampling grid can be used to determine your field collection sites to contribute. 4) The lab results of eDNA sampling at those sites where project partners have agreed to share data.


Projects Posted on: January 30, 2017
This NASA-sponsored project will test a variety of sensors and techniques used to collect and improve airborne and ground-based measurements to determine the snow-water equivalent (SWE), or the amount of water held in snow, over different terrains. This is significant because much of the worlds’, including the western U.S.’s water supply is derived from snow in mountain environments. Better information on SWE can improve hazard forecasting, water availability predictions, and agricultural forecasting, among other things. The SnowEx team includes more than 100 scientists from universities and agencies across the U.S., Europe, and Canada.

Big sagebrush: A sea fragmented into lakes, ponds, and puddles

Publications Posted on: May 12, 2016
Pioneers traveling along the Oregon Trail from western Nebraska, through Wyoming and southern Idaho and into eastern Oregon, referred to their travel as an 800 mile journey through a sea of sagebrush, mainly big sagebrush (Artemisia tridentata). Today approximately 50 percent of the sagebrush sea has given way to agriculture, cities and towns, and other human developments.

A snow-tracking protocol used to delineate local lynx, Lynx canadensis, distributions

Publications Posted on: January 22, 2016
Determining Canada Lynx (Lynx canadensis) distribution is an important management need, especially at the southern extent of the species range where it is listed as threatened under the U. S. Endangered Species Act. We describe a systematic snowtrack based sampling framework that provides reliable distribution data for Canada Lynx. We used computer simulations to evaluate protocol efficacy.

Sampling large geographic areas for rare species using environmental DNA: A study of bull trout Salvelinus confluentus occupancy in western Montana

Publications Posted on: January 15, 2016
This study tested the efficacy of environmental DNA (eDNA) sampling to delineate the distribution of bull trout Salvelinus confluentus in headwater streams in western Montana, U.S.A. Surveys proved fast, reliable and sensitive: 124 samples were collected across five basins by a single crew in c. 8days. Results were largely consistent with past electrofishing, but, in a basin where S.

Occurrences of the western skink (Eumeces skiltonianus) in grasslands of western Montana

Publications Posted on: December 15, 2015
The western skink (Eumeces skiltonianus) was recently classified as a Montana Species of Special Concern due to its restricted range in the state (D. P. Hendricks, Montana Natural Heritage Program, Helena, MT, pers. comm.). Records of the western skink in Montana are limited to a few, scattered locations on the western edge of the state (Tanner 1988; Reichel and Flath 1995).

Why hardwoods do not grow naturally in the west

Publications Posted on: August 06, 2015
Unfortunately the beautiful hardwood trees which are native to the Eastern States do not grow naturally in the West. We have here only aspen, cottonwood, small birch, hawthorns, cherry, and alder. On the Pacific coast are oak and maple, but limited largely to lower moist sites such as streams bed and canyons.

Status and distribution of chinook salmon and steelhead in the interior Columbia River basin and portions of the Klamath River basin [Chapter 12]

Publications Posted on: May 26, 2015
This chapter summarizes information on presence, absence, current status, and probable historical distribution of steelhead Oncorhynchus mykiss and stream-type (age-1 migrant) and ocean type (age-0 migrant) chinook salmon O. tshawytscha in the interior Columbia River basin and portions of the Klamath River basin. Data were compiled from existing sources and via surveys completed by more than 150 biologists working in the region.