This thesis presents a hydrogeologic study of the Parrett Mountain Region,
located approximately 20 miles south of Portland, Oregon. The aim of the study was
to investigate the impacts of Columbia River Basalt on the regional groundwater
system, to expand our understanding of flow through fractured basalt, to improve
management...
Terrestrial lichen biomass is an important indicator of forage availability for caribou in northern regions, and can indicate
vegetation shifts due to climate change, air pollution or changes in vascular plant community structure. Techniques for
estimating lichen biomass have traditionally required destructive harvesting that is painstaking and impractical, so we...
Terrestrial lichen biomass is an important indicator of forage availability for caribou in northern regions, and can indicate
vegetation shifts due to climate change, air pollution or changes in vascular plant community structure. Techniques for
estimating lichen biomass have traditionally required destructive harvesting that is painstaking and impractical, so we...
Full Text:
Abbey Rosso1, Peter Neitlich1*, Robert J. Smith2
1 National Park Service, Winthrop, Washington, United
Terrestrial lichen biomass is an important indicator of forage availability for caribou in northern regions, and can indicate vegetation shifts due to climate change, air pollution or changes in vascular plant community structure. Techniques for estimating lichen biomass have traditionally required destructive harvesting that is painstaking and impractical, so we...
Tuna fisheries around the world are governed by Regional Fishery Management Organizations (RFMOs), whose membership includes both harvesting nations and nations in whose waters the targeted fish populations reside. The outcomes of the policies established by an RFMO will depend on subsequent interactions among the fleets, the fishing sites and...
"A pilot study conducted for the Environmental Protection Agency." "Based on field work conducted during the months of July and August 1976, the following report describes the characteristics of vegetation at the upper limit of intertidal wetland in five Oregon coastal marshes and relates vegetation characteristics to marsh zonation, elevations...
Since its discovery in Oregon in 1946, the pear psylla, Psylla pyricola Forster, has become the most serious insect pest of pear. Damage to pear trees include the transmission of pear decline disease which has caused losses of trees, injection of a phytotoxic toxin resulting in tree shock and injury,...
