Spatial overlap and coexistence in a mussel-associated polychaete assemblage on a South American rocky shore

Mutsunori Tokeshi, Leonardo Romero

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

抄録

Mussel beds in the intertidal of subtropical South America are known to harbour a large number of invertebrates, particularly polychaetes. This paper presents a quantitative analysis of the patterns of spatial overlap and coexistence in an assemblage of polychaetes associated with mussel beds in a rocky intertidal habitat on the Pacific coast of Peru. Mussel beds are made up of two zones in the intertidal: the lower, more extensive zone formed by Semimytilus algosus and the upper zone formed by Perumytilus purpuratus. Null models were employed to assess the magnitude of spatial overlap between pairs of taxa encompassing a total of seven taxonomic groups. Two taxa belonging to the same functional group tended to be spatially segregated in the Semimytilus bed: Pseudonereis vs. Halosydna (large free-ranging predators) and Scoloplos vs. Mediomastus (deposit feeders), with further segregating tendencies between Pseudonereis and Mediomastus, and between Halosydna and Scoloplos. Small-sized, free-ranging 'Typosyllis' and the bottom-dwelling scavenging predator Lumbrineris were also spatially associated. Thus, this polychaete assemblage appears to be loosely organised around groupings of taxa which are somewhat different in ecological traits and form mosaic patterns of distribution with reduced overlap within the Semimytilus bed. These relationships were weak to non-existent in the upper, drier Perumytilus habitat where polychaete density was low.

元の言語英語
ページ(範囲)247-261
ページ数15
ジャーナルMarine Ecology
21
発行部数3-4
DOI
出版物ステータス出版済み - 12 1 2000

Fingerprint

rocky shore
polychaete
Polychaeta
coexistence
mussels
predator
deposit feeder
habitat
predators
quantitative analysis
functional group
littoral zone
harbor
invertebrate
habitats
Peru
coast
invertebrates
coasts

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology

これを引用

Spatial overlap and coexistence in a mussel-associated polychaete assemblage on a South American rocky shore. / Tokeshi, Mutsunori; Romero, Leonardo.

:: Marine Ecology, 巻 21, 番号 3-4, 01.12.2000, p. 247-261.

研究成果: ジャーナルへの寄稿記事

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