Citations with the tag: POPULATION biology -- Statistical methods
Results 1 - 6
- Chaos, group selection, and sex.
Manning, John T.; Goulding, Maria // Journal of Biological Education; Winter91, Vol. 25 Issue 4, p270
Describes a computer model of population biology illustrating fluctuations in populations and how the spread of asexual reproduction can lead to chaos and extinction. Background on population regulation; Chaos and logistic expression; Sex and chaos; Chaos, sex and group selection.
- Delimitation of Phylogenetic Species with DNA Sequences: A Critique of Davis and Nixon's Population Aggregation Analysis.
Brower, Andrew V. Z. // Systematic Biology; Jan1999, Vol. 48 Issue 1, p199
Investigates the implication of using population aggregation analysis (PAA) in delimiting species with DNA sequence data. Steps of the PAA of Davis and Nixon (1992); Modification of the outlined procedure of the analysis; Superiority of the cladistic haplotype aggregation.
- Monitoring populations of plants and animals.
Gibbs, James P.; Droege, Sam; Eagle, Paige // BioScience; Nov98, Vol. 48 Issue 11, p935
Discusses how ecologists use monitoring programs to determine population size. Strengths and weaknesses of population indices; Complex sampling issues; Variability in counts; Problems in tracing population trends; Power estimation for monitoring programs; Variability of indices of plant and...
- To fit or not to fit? A poorly fitting procedure produces inconsistent results when the species--area relationship is used to locate hotspots.
Fattorini, Simone // Biodiversity & Conservation; Aug2007, Vol. 16 Issue 9, p2531
Ulrich and Buszko (2005, Biodivers Conserv 14:1977-1988) have recently applied the species--area relationship (SAR) to find butterfly hotspots in Europe using the linearized power function. They found that, with this method, despite the fact that the larger southern European countries and the...
- Speeding up Evolutionary Search by Small Fitness Fluctuations.
Otwinowski, Jakub; Tanase-Nicola, Sorin; Nemenman, Ilya // Journal of Statistical Physics; Jul2011, Vol. 144 Issue 2, p367
We consider a fixed size population that undergoes an evolutionary adaptation in the weak mutation rate limit, which we model as a biased Langevin process in the genotype space. We show analytically and numerically that, if the fitness landscape has a small highly epistatic (rough) and...
- Testing the Goodness of Supplementary Feeding to Enhance Population Viability in an Endangered Vulture.
Oro, Daniel; Margalida, Antoni; Carrete, Martina; Heredia, Rafael; Donázar, José Antonio // PLoS ONE; 2008, Vol. 3 Issue 12, p1
Background: Human-predator conflicts are directly or indirectly threatening many species with extinction. Thus, biologists are urged to find simple solutions to complex situations while avoiding unforeseen conservation outcomes. The provision of supplementary food at artificial feeding sites...