منابع مشابه
Phylogenetic community structure: temporal variation in fish assemblage
Hypotheses about phylogenetic relationships among species allow inferences about the mechanisms that affect species coexistence. Nevertheless, most studies assume that phylogenetic patterns identified are stable over time. We used data on monthly samples of fish from a single lake over 10 years to show that the structure in phylogenetic assemblages varies over time and conclusions depend heavil...
متن کاملEarly Carboniferous (Mississippian) miospore assemblage from Persian Gulf, Southwest Iran
A Mississippian miospore assemblage has been recorded from well A in the Persian Gulf in Iranian offshore, for the first time. Fifteen species of spores have been recognized in the Early Carboniferous assemblage of this well which the most important of them are: Spelaeotriletes arenaceus, Aratrisporites saharaensis, Spelaeotriletes balteatus, Spelaeotriletes triangulus and Radiizonates arcuatus...
متن کاملCommunity-level density dependence: an example from a shallow coral assemblage.
While density dependence is a popular topic of research in population ecology, it has received much less attention at the community level. Using 27 years of data from Heron Island, on Australia's Great Barrier Reef, we develop a matrix model of coral community dynamics that shows that community-level density dependence does occur and that it is fairly common, being found in 38% of the model par...
متن کاملSpecies interactions mediate phylogenetic community structure in a hyperdiverse lizard assemblage from arid Australia.
Evolutionary history can exert a profound influence on ecological communities, but few generalities have emerged concerning the relationships among phylogeny, community membership, and niche evolution. We compared phylogenetic community structure and niche evolution in three lizard clades (Ctenotus skinks, agamids, and diplodactyline geckos) from arid Australia. We surveyed lizard communities a...
متن کاملExperimental evidence for neutral community dynamics governing an insect assemblage.
The high levels of species diversity observed within many biological communities are captivating, yet the mechanisms that may maintain such diversity remain elusive. Many of the phenotypic differences observed among species cause interspecific tradeoffs that ultimately act to maintain diversity through niche-based coexistence. In contrast, neutral community theory argues that phenotypic differe...
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ژورنال
عنوان ژورنال: Conservation Biology
سال: 2008
ISSN: 0888-8892
DOI: 10.1111/j.1523-1739.2001.00005.x