Spatial Variation in the Structure of Kelp Forest Communities Along a Wave Exposure Gradient
作者:
Christopher Harrold,
James Watanabe,
Susan Lisin,
期刊:
Marine Ecology
(WILEY Available online 1988)
卷期:
Volume 9,
issue 2
页码: 131-156
ISSN:0173-9565
年代: 1988
DOI:10.1111/j.1439-0485.1988.tb00204.x
出版商: Blackwell Publishing Ltd
关键词: Macrocystis pyrifera;kelp forest ecology;wave exposure;spatial variation;rocky subtidal
数据来源: WILEY
摘要:
Abstract.Four sites were sampled in kelp(Macrocysiis pyrifera)forests occupying rocky bottom habitats along a wave exposure gradient in central California. Consistent betwecn‐site differences were found in the three major structural elements ‐ the surface canopy, the undcrstory assemblage, and the ground cover/turf assemblage ‐ of kelp forest communities.Macrocysiis pyriferawas found at all four sites.Nereucyslis tuelkeanaonly at the most exposed site. The understory kelpsLaminaria setchelliiandPterygopltora californicawere also characteristic of exposed sites. Articulated coralline algae were more abundant at exposed sites than protected, while fleshy red algae showed the opposite pattern. All four study sites were located along 8.5 km of coastline, and thus were assumed to have available to them the same species pool for colonization. The substrate composition was the same and the amount of unconsolidated substrate was similar at all four sites. We suggest that exposure to wave‐generated water motion, through its influence on the surface canopy and therefore on the amount of light reaching the bottom, is responsible for these between‐site di
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