Charles Darwin University

CDU eSpace
Institutional Repository

 
CDU Staff and Student only
 

Developing methods for quantifying the apparent abundance of fiddler crabs (Ocpodidae: Uca) in mangrove habitats

McGuinness, KA and Nobbs, M (1999). Developing methods for quantifying the apparent abundance of fiddler crabs (Ocpodidae: Uca) in mangrove habitats. Australian Journal of Ecology,24(1):43-49.

Document type: Journal Article
Citation counts:
Google Scholar Search Google Scholar

Title Developing methods for quantifying the apparent abundance of fiddler crabs (Ocpodidae: Uca) in mangrove habitats
Author McGuinness, KA
Nobbs, M
Journal Name Australian Journal of Ecology
Publication Date 1999
Volume Number 24
Issue Number 1
ISSN 0307-692X   (check CDU catalogue open catalogue search in new window)
Start Page 43
End Page 49
Total Pages 7
Place of Publication Oxford
Publisher Blackwell Publishing
HERDC Category C1 - Journal Article (DEST)
Abstract Counting the number of individuals emerging from burrows is the mostpractical method for estimating the apparent abundance of AustralianUca species living in mangrove habitats. Experiments were conducted to investigate the effect on counts of quadrat design, distance of observer, quadrat size, recovery time and observational technique. Significant differences in the apparent abundance of one species were found when the subjects were within 2 m of the observer, and when a conspicuous quadrat was used. The largest quadrat tested provided the least variability in counts but an intermediate size (0.56 m2) was more practical. Most Uca active within a 30-min period emergedduring the first 10 min regardless of site, species, sex or season, There was a linear correlation between scanning and continuous observation indicating that the former method could be useful when samplingtime was limited. Temporal changes in the apparent abundance of Uca suggest that long-term sampling and more detailed studies will be worthwhile.
DOI http://dx.doi.org/10.1046/j.1442-9993.1999.00945.x   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
Additional Notes Current title (from 1999) Austral Ecology: a journal of ecology in the Southern Hemisphere (ISSN: 1442-9985)
 
Versions
Version Filter Type
Access Statistics: 51 Abstract Views  -  Detailed Statistics
Created: Fri, 12 Sep 2008, 08:35:25 CST by Administrator