ChapmanChapman1993

Référence

Chapman, L.J., Chapman, C.A. (1993) Fish populations in tropical floodplain pools: a re-evaluation of Holden's data on the River Sokoto. Ecology of Freshwater Fish, 2(1):23-30. (Scopus )

Résumé

Discusses whether the fish populations of residual pools in a seasonally fluctuating African river varied between years, using data on the fish of the permanent floodplain pools of the River Sokoto, Nigeria compiled by Holden (1963). Holden provided estimates for the size and biomass of fish populations in 12 permanent dry season pools over a period of 2-3 yr. On average, only 22% of the species present in a pool were absent from that pool in the following sampling period. Despite low inter-annual variability in the species composition of the pools, rank correlation analysis indicated significant variation in the relative numbers and biomass of the 10 most numerically abundant species in most pools. Altering the spatial scale of analysis to include all possible combinations of two and six pools did not affect the results. Indices of similarity also indicated relatively high annual variability in the relative abundance of species in the pool communities. Habitat selection may contribute to the continued occurrence of fish species in pools from year to year. Such factors as changes in the overall abundance of fish species in the system and haphazard trapping during flood decline may contribute to annual variation in their relative abundance. -Authors

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@ARTICLE { ChapmanChapman1993,
    AUTHOR = { Chapman, L.J. and Chapman, C.A. },
    TITLE = { Fish populations in tropical floodplain pools: a re-evaluation of Holden's data on the River Sokoto },
    JOURNAL = { Ecology of Freshwater Fish },
    YEAR = { 1993 },
    VOLUME = { 2 },
    PAGES = { 23--30 },
    NUMBER = { 1 },
    __MARKEDENTRY = { [Luc:6] },
    ABSTRACT = { Discusses whether the fish populations of residual pools in a seasonally fluctuating African river varied between years, using data on the fish of the permanent floodplain pools of the River Sokoto, Nigeria compiled by Holden (1963). Holden provided estimates for the size and biomass of fish populations in 12 permanent dry season pools over a period of 2-3 yr. On average, only 22% of the species present in a pool were absent from that pool in the following sampling period. Despite low inter-annual variability in the species composition of the pools, rank correlation analysis indicated significant variation in the relative numbers and biomass of the 10 most numerically abundant species in most pools. Altering the spatial scale of analysis to include all possible combinations of two and six pools did not affect the results. Indices of similarity also indicated relatively high annual variability in the relative abundance of species in the pool communities. Habitat selection may contribute to the continued occurrence of fish species in pools from year to year. Such factors as changes in the overall abundance of fish species in the system and haphazard trapping during flood decline may contribute to annual variation in their relative abundance. -Authors },
    ADDRESS = { Museum of Comparative Zoology, Harvard Univ, Cambridge, MA 02138, USA },
    COMMENT = { Cited By (since 1996):13 Export Date: 14 February 2014 Source: Scopus },
    OWNER = { Luc },
    TIMESTAMP = { 2014.02.14 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-0027801375&partnerID=40&md5=c72d083d05228fd898e57a70ae8fbe73 },
}

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