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Author : Brian A. Cooper
Publisher :
Page : pages
File Size : 14,84 MB
Release : 1998
Category : Marbled murrelet
ISBN :
Author :
Publisher :
Page : 16 pages
File Size : 15,4 MB
Release : 1990
Category : Bird populations
ISBN :
The marbled murrelet (Brachyramphus marmoratus), a seabird, nests in forested stands from southeast Alaska south to Santa Cruz, California. Because of this species' close association with old-growth forests, researchers and land managers need a method to assess murrelet distribution and use patterns throughout its range. This guide describes a standardized method for surveying marbled murrelets used by researchers in California and Oregon during 1988 and 1989. Transects can be used to assess activity patterns over large blocks of land, such as States or counties. Stationary counts using an intensive inventory method can be used to survey small acreages, such as individual timber sales. In addition to bird counts, vegetation and physical data should be collected at each census point. The guide includes a form that can be used to design studies and determine activity patterns and potential use.
Author : Pacific Northwest Research Station (Portland, Or.)
Publisher :
Page : 116 pages
File Size : 43,98 MB
Release : 1999
Category : Forests and forestry
ISBN :
Author :
Publisher :
Page : 76 pages
File Size : 39,30 MB
Release : 2007
Category : Birds
ISBN :
The marbled murrelet (Brachyramphus marmoratus) ranges from Alaska to California and is listed under the Endangered Species Act as a threatened species in Washington, Oregon, and California. Marbled murrelet recovery depends, in large part, on conservation and restoration of breeding habitat on federally managed lands. A major objective of the Northwest Forest Plan (the Plan) is to conserve and restore nesting habitat that will sustain a viable marbled murrelet population. Under the Plan, monitoring is an essential component and is designed to help managers understand the degree to which the Plan is meeting this objective. This report describes methods used to assess the status and trend of marbled murrelet populations under the Plan.
Author : Anthony R. DeGange
Publisher :
Page : 84 pages
File Size : 29,87 MB
Release : 1996
Category : Marbled murrelet
ISBN :
Author : James Alegria
Publisher :
Page : 44 pages
File Size : 30,39 MB
Release : 2002
Category : Bird surveys
ISBN :
Author :
Publisher :
Page : 624 pages
File Size : 39,92 MB
Release : 2006
Category : Forests and forestry
ISBN :
Author : Caryla J. Larsen
Publisher :
Page : 122 pages
File Size : 29,55 MB
Release : 1991
Category : Marbled murrelet
ISBN :
Author :
Publisher :
Page : 412 pages
File Size : 49,11 MB
Release : 2005
Category : Sea birds
ISBN :
Author : C. John Ralph
Publisher : DIANE Publishing
Page : 434 pages
File Size : 36,40 MB
Release : 1997-04
Category : Science
ISBN : 9780788141621
This report was compiled & edited by the interagency Marbled Murrelet Conservation Assessment Core Team. The 37 chapters cover both original studies & literature reviews of many aspects of the species' biology, ecology, & conservation needs. It includes new information on the forest habitat used for nesting, marine distribution, & demographic analyses; & describes past & potential effects of humans on the species habitats. Future research needs & possible management strategies for both marine & forest habitats are suggested. Charts & tables.