ChapmanKramerChapman1991

Référence

Chapman, L.J., Kramer, D.L. and Chapman, C.A. (1991) Population dynamics of the fish Poecilia gillii (Poeciliidae) in pools of an intermittent tropical stream. Journal of Animal Ecology, 60(2):441-453. (Scopus )

Résumé

Examined Poecilia gillii, a small algae- and detritus-feeding fish, inhabiting 16 isolated, residual pools of a high-gradient, intermittent stream in Costa Rica. Immediately after floods, population sizes averaged 20% and pool surface areas 130% of their pre-flood values, periphyton production was relatively low and dissolved oxygen relatively high. Among pools, population densities were not correlated with their pre-flood values, and the population growth rages showed a weak negative correlation with density, a marginal positive correlation with periphyton production and no correlation with oxygen. Near the end of the 153-day post-flood study period, population sizes had risen to 50% of their pre-flood values, while pool areas had fallen to 73% of their preflood values. Periphyton production was relatively high and dissolved oxygen was very low. Among pools, population densities were correlated with their pre-flood values, and the population growth rate showed a strong negative correlation with population density and strong positive correlations with periphyton production and dissolved oxygen level. An increase in the proportion of males and a decrease in their size after the floods suggest social inhibition of sexual maturation during the late dry season. -from Authors

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@ARTICLE { ChapmanKramerChapman1991,
    AUTHOR = { Chapman, L.J. and Kramer, D.L. and Chapman, C.A. },
    TITLE = { Population dynamics of the fish Poecilia gillii (Poeciliidae) in pools of an intermittent tropical stream },
    JOURNAL = { Journal of Animal Ecology },
    YEAR = { 1991 },
    VOLUME = { 60 },
    PAGES = { 441--453 },
    NUMBER = { 2 },
    __MARKEDENTRY = { [Luc:6] },
    ABSTRACT = { Examined Poecilia gillii, a small algae- and detritus-feeding fish, inhabiting 16 isolated, residual pools of a high-gradient, intermittent stream in Costa Rica. Immediately after floods, population sizes averaged 20% and pool surface areas 130% of their pre-flood values, periphyton production was relatively low and dissolved oxygen relatively high. Among pools, population densities were not correlated with their pre-flood values, and the population growth rages showed a weak negative correlation with density, a marginal positive correlation with periphyton production and no correlation with oxygen. Near the end of the 153-day post-flood study period, population sizes had risen to 50% of their pre-flood values, while pool areas had fallen to 73% of their preflood values. Periphyton production was relatively high and dissolved oxygen was very low. Among pools, population densities were correlated with their pre-flood values, and the population growth rate showed a strong negative correlation with population density and strong positive correlations with periphyton production and dissolved oxygen level. An increase in the proportion of males and a decrease in their size after the floods suggest social inhibition of sexual maturation during the late dry season. -from Authors },
    ADDRESS = { Dept Biol, McGill Univ, 1205 Dr Penfield Ave, Montreal, Quebec H3A 1B1, Canada },
    COMMENT = { Cited By (since 1996):19 Export Date: 14 February 2014 Source: Scopus },
    OWNER = { Luc },
    TIMESTAMP = { 2014.02.14 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-0026054297&partnerID=40&md5=58e5e04942e228c93fe087cd28d62995 },
}

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