منابع مشابه
Species-fragmented area relationship.
The species-area relationship (SAR) gives a quantitative description of the increasing number of species in a community with increasing area of habitat. In conservation, SARs have been used to predict the number of extinctions when the area of habitat is reduced. Such predictions are most needed for landscapes rather than for individual habitat fragments, but SAR-based predictions of extinction...
متن کاملThe species-area relationship and evolution.
Models relating to the species-area curve usually assume the existence of species, and are concerned mainly with ecological timescales. We examine an individual-based model of co-evolution on a spatial lattice based on the tangled nature model in which species are emergent structures, and show that reproduction, mutation and dispersion by diffusion, with interaction via genotype space, produces...
متن کاملSelf-similarity and the species-area relationship.
Self-similar distributions of species across a landscape have been proposed as one potential cause of the well-known species-area relationship. The best known of these proposals is in the form of a probability rule for species occurrence. The application of this rule to the number of species occurring in primary well-shaped rectangles within the landscape gives rise to a discrete power law for ...
متن کاملHabitat heterogeneity overrides the species–area relationship
Species–area relationships are amongst the most studied ecological phenomena (Connor & McCoy, 1979; Rosenzweig, 1995; Whittaker, 1998; Báldi & McCollin, 2003; HornerDevine et al., 2004; Martin & Goldenfeld, 2006). They encapsulate the general pattern that larger islands/areas contain more species than smaller ones (e.g. MacArthur & Wilson, 1967). Although there is strong evidence for the genera...
متن کاملSpecies-area relationship for power-law species abundance distribution
We studied the mathematical relations between species abundance distributions (SADs) and species-area relationships (SARs) and found that a power-law SAR can be generally derived from a power-law SAD without a special assumption such as the “canonical hypothesis”. In the present analysis, an SAR-exponent is obtained as a function of an SAD-exponent for a finite number of species. We also studie...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2013
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1311491110