Changes in fish assemblages in East Texas streams from 1953 to 1986

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dc.acquisition-srcDownloaded from-BIOSISen_US
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dc.contributor.authorHubbs C; Marsh-Matthews E; Matthews WJ; Anderson AAen_US
dc.contributor.editoren_US
dc.contributor.otherTexas Journal of Scienceen_US
dc.date.accessioned2010-02-15T17:12:54Z
dc.date.available2010-02-15T17:12:54Z
dc.date.issued1997en_US
dc.degreeen_US
dc.description67-84en_US
dc.description-otheren_US
dc.description.abstractFish assemblages from 58 sites in east Texas were sampled in 1953 and 1986. Change in assemblage structure over this one-third century time span was analyzed using Detrended Correspondence Analysis. Two sites in the lower reaches of Trinity River adjacent to Trinity Bay were distinct from all other east Texas sites in both years, and showed a large change in assemblage composition that corresponded with presence of large numbers of estuarine species in the 1986 collections. Analyses of the remaining 56 sites detected change in east Texas fish faunas at three spatial scales: regionally, within individual river basins, and at specific sites. At the regional scale, DCA revealed that fish assemblages in the five river basins (Red, Sabine, Neches, Trinity and Brazos) were relatively distinct in 1953, but showed almost complete overlap in 1986. This increased overlap was the result of increased variation in assemblage structure in 1986 within each river basin. Fifteen individual sites exhibited change equivalent to a 50% (or greater) turnover in assemblage composition. These changed sites were from all river basins sampled and their trajectories in multivariate space did not occur in any single direction, suggesting that changes were influenced by local rather than basin-wide conditionsen_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/22857
dc.latitudeen_US
dc.locationen_US
dc.longitudeen_US
dc.notesDB - BIOSIS PreviewsAN - PREV199800044318IN - Dep. Zool., Univ. Texas Austin, Austin, TX 78712, USACY - USAPT - ArticleLG - Englishen_US
dc.placeen_US
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dc.relation.ispartofseries50267.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectassemblage composition; fish assemblage; species turnover; stream: habitat;Biodiversity;fish [Pisces];Pisces: Animals,Chordates,Fish,Nonhuman Vertebrates,Vertebrates;[07508] Ecology: environmental biology - Animal;[07514] Ecology: environmental biology - Limnology;[62510] Chordata: general and systematic - Pisces;[85200] Pisces;[85200] Pisces,Vertebrata,Chordata,Animalia;en_US
dc.titleChanges in fish assemblages in East Texas streams from 1953 to 1986en_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue49(3 SUPPL.)en_US

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