Edge patterns in aquatic invertebrates explained by predictive models

Macreadie,PI, Connolly,RM, Jenkins,GP, Hindell,JS and Keough,MJ 2010, Edge patterns in aquatic invertebrates explained by predictive models, Marine and freshwater research, vol. 61, no. 2, pp. 214-218, doi: 10.1071/MF09072.

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Title Edge patterns in aquatic invertebrates explained by predictive models
Author(s) Macreadie,PIORCID iD for Macreadie,PI orcid.org/0000-0001-7362-0882
Journal name Marine and freshwater research
Volume number 61
Issue number 2
Start page 214
End page 218
Total pages 5
Publisher CSIRO Publishing
Place of publication Melbourne, Vic.
Publication date 2010
ISSN 1323-1650
Keyword(s) Current flow
Edge distribution
Plankton tube traps
Predictive model
Summary Predictive frameworks for understanding and describing how animals respond to habitat fragmentation, particularly across edges, have been largely restricted to terrestrial systems. Abundances of zooplankton and meiofauna were measured across seagrasssand edges and the patterns compared with predictive models of edge effects. Artificial seagrass patches were placed on bare sand, and zooplankton and meiofauna were sampled with tube traps at five positions (from patch edges: 12, 60 and 130 cm into seagrass; and 12 and 60 cm onto sand). Position effects consisted of the following three general patterns: (1) increases in abundance around the seagrasssand edge (total abundance and cumaceans); (2) declining abundance from seagrass onto sand (calanoid copepods, harpacticoid copepods and amphipods); and (3) increasing abundance from seagrass onto sand (crustacean nauplii and bivalve larvae). The first two patterns are consistent with resource-distribution models, either as higher resources at the confluence of adjacent habitats or supplementation of resources from high-quality to low-quality habitat. The third pattern is consistent with reductions in zooplankton abundance as a consequence of predation or attenuation of currents by seagrass. The results show that predictive models of edge effects can apply to aquatic animals and that edges are important in structuring zooplankton and meiofauna assemblages in seagrass. © 2010 CSIRO.
Language eng
DOI 10.1071/MF09072
Field of Research 060202 Community Ecology (excl Invasive Species Ecology)
Socio Economic Objective 969999 Environment not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Persistent URL http://hdl.handle.net/10536/DRO/DU:30069778

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