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Julia Butler Hansen National Wildlife Refuge: Assessment of Fishes, Habitats, and Tide Gates in the Sloughs on the Mainland. 2007, 2008 Progress Report

机译:朱莉娅巴特勒汉森国家野生动物保护区:评估内地泥滩的鱼类,栖息地和潮汐门。 2007年,2008年进展报告

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摘要

In spring 2007 and 2008, the U.S. Fish and Wildlife Service, Columbia River Fisheries Program Office monitored biological and physical attributes of eight sloughs on the Julia Butler Hansen National Wildlife Refuge (JBHNWR). Our study assessed and described baseline conditions within four sloughs with existing tide gates and four sloughs without water control structures, prior to habitat restoration work tentatively scheduled to begin in summer 2009. Preliminary data was gathered March through June and yielded pre-construction information concerning: adult salmonid presence, tide gate function and accessibility, fish presence, community structure, habitat use and aquatic habitat conditions within the sloughs.

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