Bias in Butterfly Distribution Maps: The Effects of Sampling Effort

Bias in Butterfly Distribution Maps: The Effects of Sampling Effort Data from the Greater Manchester Butterfly Atlas (UK) reveal a highly significant and substantial impact of visits on both species' richness and species' incidence in squares. This effect has been demonstrated for three different zones mapped at different scales. The significant impact of number of visits persists when data are amalgamated for coarser scales. The findings demonstrate that it is essential for distribution mapping projects to record data on recording effort as well as on the target organisms. Suggestions are made as to how distribution mapping may be improved, including a geographically and environmentally representative structure of permanently monitored squares and closer links between distribution mapping and the Butterfly Monitoring Scheme (BMS), which primarily monitors changes in butterfly populations. The benefit to conservation will be data that can be better used to analyse the reasons for changes in ranges and distributions, fundamental for determining priorities and policy decisions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Insect Conservation Springer Journals

Bias in Butterfly Distribution Maps: The Effects of Sampling Effort

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Publisher
Springer Journals
Copyright
Copyright © 1999 by Kluwer Academic Publishers
Subject
Life Sciences; Human Genetics; Evolutionary Biology; Animal Systematics/Taxonomy/Biogeography
ISSN
1366-638X
eISSN
1572-9753
DOI
10.1023/A:1009678422145
Publisher site
See Article on Publisher Site

Abstract

Data from the Greater Manchester Butterfly Atlas (UK) reveal a highly significant and substantial impact of visits on both species' richness and species' incidence in squares. This effect has been demonstrated for three different zones mapped at different scales. The significant impact of number of visits persists when data are amalgamated for coarser scales. The findings demonstrate that it is essential for distribution mapping projects to record data on recording effort as well as on the target organisms. Suggestions are made as to how distribution mapping may be improved, including a geographically and environmentally representative structure of permanently monitored squares and closer links between distribution mapping and the Butterfly Monitoring Scheme (BMS), which primarily monitors changes in butterfly populations. The benefit to conservation will be data that can be better used to analyse the reasons for changes in ranges and distributions, fundamental for determining priorities and policy decisions.

Journal

Journal of Insect ConservationSpringer Journals

Published: Sep 29, 2004

References

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