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Survey evaluation for species richness of farmland birds
Date Issued
2012-12
Date Available
2013-07-22T13:26:55Z
Abstract
To estimate biodiversity it may be important to establish whether increased data can be
obtained from repeated surveys. Bird species richness was determined after repeated surveys in winter and in the breeding season. Data were collected over two breeding seasons and two winter seasons at nine sites, with three surveys in each winter and four surveys in each breeding season using a standard method. Poisson models were used to determine differences in total cumulative species richness recorded after each additional survey. There were significant increases in species richness in winter between survey one and survey two and between survey two and survey three across nine sites. There was a significant increase between survey one and survey two for resident breeding species richness. Based on pure species richness, three surveys recorded at least 95% of the total observed species richness recorded after four surveys
in the breeding season within the agricultural survey area.
Sponsorship
Other funder
Other Sponsorship
Environmental Protection Agency, Ireland
Type of Material
Journal Article
Publisher
Birdwatch Ireland
Journal
Irish Birds
Volume
9
Issue
3
Start Page
361
End Page
366
Language
English
Status of Item
Not peer reviewed
This item is made available under a Creative Commons License
File(s)
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Name
BMcM_Survey_evaluation_(McMahon_et_al)_(reviewed)-1.docx
Size
120.63 KB
Format
Owning collection
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Mar 28, 2024
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