Japanese, giant, and the hybrid Bohemian
knotweeds (Fallopia japonica, F. sachalinensis and
F. x bohemica) have invaded the western USA and
Canada, as well as other regions of the world. The
distribution of these taxa in western North America,
and their mode of invasion, is relatively unresolved.
Using amplified fragment...
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Schwarzländer •
Fritzi S. Grevstad • Marijka A. Haverhals •
Robert S. Bourchier • Timothy W. Miller
Received
Understanding the drivers and implications of anthropogenic disturbance of ecological connectivity is a key concern for the conservation of biodiversity and 50 ecosystem processes. Here, we review human activities that affect the movements and dispersal of aquatic organisms, including damming of rivers, river regulation, habitat loss and alteration, human-assisted dispersal...
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10
, Timothy J. Page
6
, Cynthia Riginos
11
, Brian Fry
6
, Jane M. Hughes
6
1
Research
Substantial investments in fuel management activities on national forests in the western US are part of a
national strategy to reduce human and ecological losses from catastrophic wildfire and create fire
resilient landscapes. Prioritizing these investments within and among national forests remains a challenge,
partly because a comprehensive assessment that...
Douglas-fir (Pseudotsuga menziesii) has a wide distribution in North America and is one of the
tree species most widely distributed outside its natural range. The species has been introduced to
Europe, New Zealand, South America, and elsewhere around the world. At present, Douglas-fir
is an accepted and integral part of...
Douglas-fir (Pseudotsuga menziesii) has a wide distribution in North America and is one of the
tree species most widely distributed outside its natural range. The species has been introduced to
Europe, New Zealand, South America, and elsewhere around the world. At present, Douglas-fir
is an accepted and integral part of...
The National Natural Landmarks (NNL) Program encourages the preservation of exceptional examples of the nation’s biological and geological features. To qualify for NNL designation, a site must be one of the best examples of a geological or biological feature within a biophysiographic province. Mount Howard - East Peak represents a...
The middle Deschutes River between Bend, Oregon and Lake Billy Chinook typically experiences critically low flows during the irrigation season. Commercial agriculture in the North Unit Irrigation District and Central Oregon Irrigation District is one major user of Deschutes River water. The overall objective of this research was to estimate...
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consumption in the western U.S. (Rosen
and Sexton, 1993), supplies in many areas are inadequate for