Author: UNKNOWN. AUTHOR
Publisher: Forgotten Books
Published: 2015-08-05
Total Pages: 164
ISBN-13: 9781332248711
DOWNLOAD EBOOK →Excerpt from Agricultural Irrigation Drainwater Studies in Support of the San Joaquin Valley Drainage Program: Annual Report for Fiscal Year 1988 In March 1986 the U.S. Fish and Wildlife Service (USFWS) and the U.S. Bureau of Reclamation entered into an intra-agency agreement (6-AA-20-04170) for the purpose of supporting research on the effects of agricultural drainwater contaminants on fish and wildlife populations. The agreement initiated a multi-year research effort to be conducted by USFWS research centers in support of the San Joaquin Valley Drainage Program. The National Fisheries Contaminant Research Center (NFCRC) received responsibility for seventeen major studies included in this agreement. Central to this research thrust is the determination of contaminant movement and localization in aquatic ecosystems, particularly the phenomenon of bioaccumulation and resultant exposure of fish and wildlife through the food chain. Study design includes both field and laboratory methodologies in order to isolate and identify specific chemical, physical, and biological factors influencing contaminant behavior and toxicity. All of the studies are interrelated to provide a comprehensive approach to elucidating the impacts of drainwater contaminants on fish and wildlife populations. This report summarizes research findings of NFCRC during fiscal year 1988. 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.
Author:
Publisher: Forgotten Books
Published: 2017-11-17
Total Pages: 330
ISBN-13: 9780331270570
DOWNLOAD EBOOK →Excerpt from Agriculture Irrigation Drainwater Studies in Support of the San Joaquin Valley Drainage Program: Final Report Studies with fish: The waterborne toxicity of irrigation drainwater contaminants to fish was evaluated with early life-stage exposures using striped bass, chinook salmon, and bhregill. These studies focused on selenium (selenate, selenite, seleno-l-methionine) but in the case of chinook salmon, also included boron, molybdenum, arsenic, cadmium, copper. Chromium, mercury, vanadium, nickel, silver, manganese, and zinc. The toxicity of combined dietary and waterborne selenium was assessed using juvenile chinook salmon and juvenile and adult bluegill. An in-depth evaluation of the effects of dietary and waterborne selenium on chinook salmon physiology and smoltification was made. A long-term combined dietary-waterborne study was conducted with bluegill to determine the effect of selenium on reproductive success. Field studies were conducted in the San Joaquin Valley to determine the toxicity of actual tile drainwater to juvenile chinook salmon and striped bass. 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.
Author: San Joaquin Valley Drainage Program
Publisher:
Published: 1989
Total Pages: 101
ISBN-13:
DOWNLOAD EBOOK →Author: San Joaquin Valley Drainage Program
Publisher:
Published: 1987
Total Pages: 96
ISBN-13:
DOWNLOAD EBOOK →Author: San Joaquin Valley Interagency Drainage Program
Publisher:
Published: 1979
Total Pages: 230
ISBN-13:
DOWNLOAD EBOOK →Author: Ariel Dinar
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 930
ISBN-13: 1461540283
DOWNLOAD EBOOK →Jan van Schilfgaarde, USDA Agricultural Research Service and National Research Council Committee on Irrigation-Induced Water Quality Problems In 1982, a startling discovery was made. Many waterbirds in Kesterson National Wildlife Refuge were dying or suffering reproductive failure. Located in the San Joaquin Valley (Valley) of California, the Kesterson Reservoir (Kesterson) was used to store agricultural drainage water and it was soon determined that the probable cause of the damage to wildlife was high concen trations of selenium, derived from the water and water organisms in the reservoir. This discovery drastically changed numerous aspects of water management in California, and especially affected irrigated agriculture. In fact, the repercussions spilled over to much of the Western United States. For a century, water development for irrigation has been a religiously pursued means for economic development of the West. The primary objective of the Reclamation Act of 1902 was, purportedly, the development ofirrigation water to support family farms which, in turn, would enhance the regional economy (Worster, 1985).