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Midscale Analysis of Streamside Characteristics in the Upper Grande Ronde Subbasin, Northeastern Oregon (Classic Reprint)
Author: Miles A. Hemstrom
Publisher: Forgotten Books
Published: 2017-11-09
Total Pages: 26
ISBN-13: 9780260694966
DOWNLOAD EBOOK →Excerpt from Midscale Analysis of Streamside Characteristics in the Upper Grande Ronde Subbasin, Northeastern Oregon Figure 1 - The upper Grande Ronde subbasin (approximately 178 000 ha) analysis area in northeastern Oregon. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Midscale Analysis of Streamside Characteristics in the Upper Grande Ronde Subbasin, Northeastern Oregon
Research Note PNW
Watershed History
General Technical Report PNW-GTR
Methods for Integrated Modeling of Landscape Change
Author:
Publisher:
Published: 2004
Total Pages: 228
ISBN-13:
DOWNLOAD EBOOK →The Interior Northwest Landscape Analysis System (INLAS) links a number of resource, disturbance, and landscape simulations models to examine the interactions of vegetative succession, management, and disturbance with policy goals. The effects of natural disturbance like wildfire, herbivory, forest insects and diseases, as well as specific management actions are included. The outputs from simulations illustrate potential changes in aquatic conditions and terrestrial habitat, potential for wood utilization, and socioeconomic opportunities. The 14 chapters of this document outline the current state of knowledge in each of the areas covered by the INLAS project and describe the objectives and organization of the project. The project explores ways to integrate the effects of natural disturbances and management into planning and policy analyses; illustrate potential conflicts among current policies, natural distrubances, and management activities; and explore the policy, economics, and ecological constraints associated with the application of effective fuel treatments on midscale landscapes in the interior Northwest.
Monthly Catalog of United States Government Publications
Multivariate Analysis of Fish and Environmental Factors in the Grande Ronde Basin of Northeastern Oregon
Author: Douglas Drake
Publisher:
Published: 1999
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOK →Management and restoration activities in the upper Grande Ronde Basin of Northeastern Oregon that focus on reducing the maximum annual stream temperature will be the most effective in creating stream conditions that support salmonid dominated fish assemblages. This paper outlines the analysis of 5 years of water quality; habitat and fish survey results from the 10 stream reaches in the upper Grande Ronde basin. The Environmental Protection Agency (EPA) through the Oregon Department of Environmental Quality has funded a long-term monitoring project that utilizes a paired watershed approach to assessing the biotic, habitat, and chemical conditions before, during, and after channel restoration activities. Multivariate and traditional statistical techniques were used to separate test streams from reference streams and identify indicator variables associated with fish assemblages. Seven-day moving average seasonal maximum temperature was shown to be a significant indicator variable for the fish assemblages in the upper Grande Ronde Basin.
Stream Temperatures, Riparian Vegetation, and Channel Morphology in the Upper Grande Ronde River Watershed, Oregon
Author: Todd S. Bohle
Publisher:
Published: 1994
Total Pages: 232
ISBN-13:
DOWNLOAD EBOOK →The Upper Grande Ronde River Watershed in northeastern Oregon is considered important habitat for threatened stocks of chinook salmon (Oncorhynchus tshawytscha). Documented reductions in channel complexity and riparian vegetation within the watershed have increased concern over loss of viable habitat. An important component of salmonid habitat is stream temperature during critical summer periods. In general, annual maximum stream temperatures and diurnal fluctuations in the Upper Grande Ronde River were found to reflect local reach characteristics, position in the drainage, and large-scale changes in valley shape. Stream temperatures on the Grande Ronde River at a distance of 71 km from the watershed divide exceeded 14°C, the "upper preferred temperature" for chinook salmon, more than 90% of time in July of 1991 and in July and August of 1992. While the occurrence of temperatures above 14°C were less common in the headwaters of the Grande Ronde River, downstream of a large meadow (i.e., Vey Meadow) (29 km from the divide) 14°C was exceeded at least 60% of the time during the same three month period. Seven-day maximum stream temperatures on the Upper Grande Ronde River ranged between 17.9°C and 26.6°C in 1991 and between 19.1°C and 26.7°C in 1992. Diel fluctuations on the mainstem were greatest immediately below Vey Meadow (about 12°C) but tended to stabilize at approximately 8°C at distances of over 49 km from the divide. Maximum stream temperatures in tributaries of the Upper Grande Ronde River varied by as much as 11°C (during 1992), reflecting large differences in stream cover, aspect, and flow. The timing of annual maximums seemed to be strongly linked to aspect during 1992. In addition, the high-elevation, forested tributaries had annual maximum stream temperatures and diel fluctuations which were 3°C lower than those associated with more open, low-elevation sites. Relationships between stream temperatures, riparian vegetation, and channel morphology characteristics were evaluated for 11 tributary reaches. Differences in stream cover, average flow velocity, bankfull depth and percent undercut bank were found to be significantly (p
