Constraints on body size distributions: an experimental approach using a small-scale system

被引：0
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作者：
D. Raffaelli
S. Hall
C. Emes
B. Manly
机构：
[1] Culterty Field Station,
[2] University of Aberdeen,undefined
[3] Newburgh,undefined
[4] Ellon,undefined
[5] Aberdeenshire,undefined
[6] AB41 0AA,undefined
[7] Scotland,undefined
[8] UK e-mail: d.raffaelli@aberdeen.ac.uk Fax: +44-1358-789214,undefined
[9] School of Biological Sciences,undefined
[10] University of Flinders,undefined
[11] Adelaide,undefined
[12] South Australia,undefined
[13] Department of Statistics,undefined
[14] University of Otago,undefined
[15] P.O. Box 56,undefined
[16] Dunedin,undefined
[17] New Zealand,undefined
来源：
Oecologia | 2000年 / 122卷
关键词：
Key words Intertidal; Biomass spectrum; Habitat architecture; Enrichment; Predation;
D O I：
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摘要：
Holling’s (1992) proposition that discontinuities in biotic and abiotic processes generate structure in ecological systems is examined experimentally by imposing size-specific perturbations on marine sediment assemblages. Two kinds of perturbations were applied: organic enrichment and predation, each at two levels. Perturbations significantly affected the densities and relative abundance of the main invertebrate taxa and these effects were consistent with the known effects of enrichment and predation. However, there was little evidence of significant treatment effects on the overall benthic biomass or abundance size spectrum, supporting the contention that the spectrum is conservative and is probably constrained by habitat architecture.
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页码：389 / 398
页数：9
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