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Western (Aechmophorus occidentalis) and eared (Podiceps nigricollis) grebes of central Alberta : 2002 field summary

Description

The information presented in this report represents the findings from the second year of surveying western and eared grebes within the Stony Plain study area in Alberta. The surveys are projected to span a five year period and the project is designed to monitor population trends and reproductive success of western grebes and eared grebes within the Stony Plain study area. In 2002, surveying effort was focused on the primary grebe populations identified in the initial year of the project. The regional population of western grebes was estimated to be approximately 2611 adults on six lakes. The Wabamun Lake colony continues to show signs of poor nesting success, which we now believe to be attributed to high rates of corvid nest depredation. This is a major concern since this colony is ranked nationally significant. Eared grebes were found on 10 lakes, for a conservative overall population estimate of 8633 adults.

Tags
birds eared grebe grebes species at risk waterfowl western grebe wildlife conservation wildlife habitat wildlife management

Title and publication information

Type
Report
Alternative Title

Alberta species at risk report no. 60

Alternative Title

Western and eared grebes of central Alberta : 2002 field summary

Extent

42 pages

Frequency

Once

Publisher / Creator Information

Publisher

Sustainable Resource Development (2001-2006,2006-2013)

Contributor

Hanus, Stephen

Contributor

Wollis, Hugh

Contributor

Wilkinson, Lisa

Place of Publication

Edmonton

Subject Information

Topic
Environment

Resource Dates

Date Created

2002-12-01

Date Added

2015-12-23T21:25:03.258343

Date Modified

2002-12-01

Date Issued

2002-12-01

Audience information

Identifiers

ISBN (print)

0778523330

ISSN (online)

1496-7146

ISSN (print)

1496-7219

NEOS catalogue key

2670516

Local Identifier

I/091

Usage / Licence

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