Convergence of temperate and tropical stream fish assemblages
نویسندگان
چکیده
منابع مشابه
Convergence of temperate and tropical stream fish assemblages
The hypothesis of convergence takes the deterministic view that community (or assemblage) structure can be predicted from the environment, and that the environment is expected to drive evolution in a predictable direction. Here we present results of a comparative study of freshwater fish assemblages from headwater streams in four continents (Europe, North America, Africa and South America), wit...
متن کاملTesting metapopulation models with stream-fish assemblages
We assessed the utility of simple metapopulation models in an analysis of a decade (1976–86) of stream-fish censuses at 10 sites on the Cimarron River, Oklahoma. This assemblage is a good candidate for metapopulation analysis because there was substantial annual turnover of population, with frequent local extinctions and recolonizations. However, annual probabilities of colonization and extinct...
متن کاملTesting macroecology models with stream-fish assemblages
We measured species-level probabilities of colonization and extinction from a decade (1976–86) of stream-fish censuses at 10 sites on the Cimarron River, Oklahoma. In a macroecological analysis that controlled for phylogenetic relationships among the 41 species, we used body size, average population size, area of geographic range and distance to the centre of the geographic range as correlates ...
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Positive correlations between diversity and stability have been reported for a number of ecosystems and are thought to be caused by a stabilizing effect of differential species’ responses to environmental perturbation. Empirical field studies in which investigators tested for diversity–stability relationships are lacking for some taxonomic groups and typically have not included tests of the imp...
متن کاملHabitat Specialization in Tropical Continental Shelf Demersal Fish Assemblages
The implications of shallow water impacts such as fishing and climate change on fish assemblages are generally considered in isolation from the distribution and abundance of these fish assemblages in adjacent deeper waters. We investigate the abundance and length of demersal fish assemblages across a section of tropical continental shelf at Ningaloo Reef, Western Australia, to identify fish and...
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ژورنال
عنوان ژورنال: Ecography
سال: 2009
ISSN: 0906-7590,1600-0587
DOI: 10.1111/j.1600-0587.2008.05591.x