Dispersal, Environmental Correlation, and Spatial Synchrony in Population Dynamics
نویسندگان
چکیده
منابع مشابه
Dispersal, Environmental Correlation, and Spatial Synchrony in Population Dynamics.
Many species exhibit widespread spatial synchrony in population fluctuations. This pattern is of great ecological interest and can be a source of concern when the species is rare or endangered. Both dispersal and spatial correlations in the environment have been implicated as possible causes of this pattern, but these two factors have rarely been studied in combination. We develop a spatially s...
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Andrew Liebhold,1 Walter D. Koenig,2 and Ottar N. Bjørnstad3 1Northeastern Research Station, USDA Forest Service, Morgantown, West Virginia 26505; email: [email protected] 2Hastings Reservation, University of California, Berkeley, Carmel Valley, California 93924; email: [email protected] 3Departments of Entomology and Biology, Pennsylvania State University, University Park, Pennsylvania 168...
متن کاملSpatial population dynamics: analyzing patterns and processes of population synchrony.
The search for mechanisms behind spatial population synchrony is currently a major issue in population ecology. Theoretical studies highlight how synchronizing mechanisms such as dispersal, regionally correlated climatic variables and mobile enemies might interact with local dynamics to produce different patterns of spatial covariance. Specialized statistical methods, applied to large-scale sur...
متن کاملPopulation dynamics, synchrony, and environmental quality of Hokkaido voles lead to temporal and spatial Taylor's laws.
Taylor's law (TL) asserts that the variance in a species' population density is a power-law function of its mean population density: log(variance) = a + b × log(mean). TL is widely verified. We show here that empirical time series of density of the Hokkaido gray-sided vole, Myodes rufocanus, sampled 1962-1992 at 85 locations, satisfied temporal and spatial forms of TL. The slopes (b ± standard ...
متن کاملHow robust is dispersal-induced spatial synchrony?
Many biological populations fluctuate in synchrony over large geographic regions. This behavior may increase the chance of extinction. The combination of time-scale separation between interacting species and weak spatial linear diffusive coupling is one mechanism that can generate synchrony; however, accounting for travel time between habitat patches may destabilize this synchrony. Here, we sho...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 2000
ISSN: 0003-0147,1537-5323
DOI: 10.1086/303350