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Document Type

Zion National Park

First Page

241

Last Page

242

Abstract

Currently there is little empirical evidence to guide decision makers on how to manage for viable populations of the Northern Spotted Owl (Strix occidentalis caurina) and how to decide what extent and what types of timber harvesting do not adversely affect Spotted Owls. In this ongoing study we are addressing some of the urgent research needs related to Spotted Owls by testing the null hypotheses that various forms of forest fragmentation do not affect (1) site selection, (2) site occupancy, or (3) reproductive success of Spotted Owls at sites within the Bureau of Land Management (BLM) checkerboard pattern of land ownership and management in Western Oregon.

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