Multiscale spatial variation of stone recolonization by macroinvertebrates in a Costa Rican stream

Boyero, Luz, and Bosch, Jaime (2004) Multiscale spatial variation of stone recolonization by macroinvertebrates in a Costa Rican stream. Journal of Tropical Ecology, 20. pp. 85-95.

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Abstract

The process of stone recolonization by macroinvertebrates was studied at different spatial scales in a stream in Costa Rica. A hierarchical design was used with riffles nested into reaches, and individual stones nested into riffles. Macroinvertebrate abundance and taxon richness varied at riffle scale, although patterns of variation seemed to change with time of recolonization, and taxonomic composition varied mostly at reach scale. Patterns of variation of background communities and macroinvertebrate drift at different spatial scales suggest that the contribution of these two sources of colonists to stone recolonization depends on spatial scale. Macroinvertebrate abundance was related to local environmental variables during recolonization, but taxon richness was related to the local environment only in the very first stage of the process. The need for explicitly determining the appropriate spatial scale in the study of substrate recolonization is emphasized.

Item ID: 8932
Item Type: Article (Refereed Research - C1)
Keywords: macroinvertebrate communities; recolonization process; spatial scales; substrate; tropical stream; tropical biology
ISSN: 1469-7831
Date Deposited: 10 Mar 2010 04:36
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060204 Freshwater Ecology @ 50%
06 BIOLOGICAL SCIENCES > 0602 Ecology > 060202 Community Ecology (excl Invasive Species Ecology) @ 50%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960807 Fresh, Ground and Surface Water Flora, Fauna and Biodiversity @ 50%
96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960506 Ecosystem Assessment and Management of Fresh, Ground and Surface Water Environments @ 50%
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