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Three themes dominate this review. The first is that biodiversity is biogeography. Or, as Nelson and Ladiges (1990) put it: "Indeed, what beyond biogeography is 'biodiversity' about?" Second, watershe...
Strong genetic change over short spatial scales is surprising among marine species with high dispersal potential. Concordant breaks among several species signals a role for geographic barriers to d...
We used fluorescence in situ hybridization to examine the spatial and temporal variation in the abundance of major bacterial groups in the Delaware Estuary. The abundance of alpha- and beta-proteobact...
We used allozyme electrophoresis to quantify genetic variation in nine populations of the Gammarus pecos species complex endemic to spring systems of the northern Chihuahuan Desert. There was signific...

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