onr:"swepub:oai:DiVA.org:umu-3905"
Search: onr:"swepub:oai:DiVA.org:umu-3905" > Spatial scale, hete...
- 1 of 1
- Previous record
- Next record
- To hitlist
Spatial scale, heterogeneity and functional responses
-
- Bergström, Ulf (author)
- Umeå universitet,Ekologi och geovetenskap
-
- Englund, Göran (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap
- (creator_code:org_t)
- Oxford, 2004
- 2004
- English.
- In: Journal of Animal Ecology. - Oxford. - 0021-8790 .- 1365-2656. ; 73:3, s. 487-493
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- 1. In a laboratory experiment, we studied the effect of arena size on the functional response of the mysid shrimp Neomysis integer preying on the cladoceran Polyphemus pediculus. The aim of the study was to examine mechanisms that cause the functional response to be scale-dependent, by documenting the spatial distribution and the movement behaviour of predator and prey. 2. The attack rate was significantly higher in large arenas, while the handling time did not differ between arena sizes. The difference in attack rate could be explained by differences in aggregative behaviour of predator and prey and in swimming activity of the predator. It is suggested that distributions of animals are often affected by the walls of the experimental arenas and that this spatial heterogeneity is scale-dependent, which may have a considerable impact on estimates of ecological process rates. 3. A method of correcting attack rate estimates for artefacts caused by such spatial heterogeneity is presented.
Keyword
- consumption rate
- encounter rate
- Neomysis integer
- Polyphemus pediculus
- scale effects
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Journal of Animal Ecology (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Bergström, Ulf
- Englund, Göran
- Articles in the publication
- Journal of Anima ...
- By the university
- Umeå University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
