H. P. Possingham

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Introduction Many countries have committed to conserving significant amounts of their native biodiversity (McNeely et al. 1990). Biodiversity includes the diversity of ecosystems and the diversity between and within species. Establishing reserve systems dedicated to nature conservation is the cornerstone of most national, regional and state conservation(More)
Organisms living in the marine rocky intertidal zone compete for space. This, together with predation, physical disruption, and differing species tolerances to physiological stress, explains the structure of the ecological communities at some sites. At other sites the supply of larvae is limiting, and events in the offshore waters, such as wind-driven(More)
We synthesize results from existing models of marine reserves to identify key theoretical issues that appear to be well understood, as well as issues in need of further exploration. Models of marine reserves are relatively new in the scientific literature; 32 of the 34 theoretical papers we reviewed were published after 1990. These models have focused(More)
A recent study by Brook et al. empirically tested the performance of population viability analysis (PVA) using data from 21 populations across a wide range of species. The study concluded that PVAs are good at predicting the future dynamics of populations. We suggest that this conclusion is a result of a bias in the studies that Brook et al. included in(More)
Analytically tractable metapopulation models usually assume that every patch is identical, which limits their application to real metapopulations. We describe a new single species model of metapopulation dynamics that allows variation in patch size and position. The state of the metapopulation is defined by the presence or absence of the species in each(More)
R apid climatic change has already caused changes to the distributions of many plants and animals, leading to severe range contractions and the extinction of some species (1, 2). The geographic ranges of many species are moving toward the poles or to higher altitudes in response to shifts in the habitats to which these species have adapted over relatively(More)
an application of stochastic dynamic programming to population management K. SHEA*{{x and H. P. POSSINGHAM{{{ {CRC for Weed Management Systems, xCSIRO Entomology, GPO Box 1700, Canberra ACT 2601, Australia; {Department of Applied and Molecular Ecology, Waite Campus, The University of Adelaide, PB 1 Glen Osmond, South Australia 5064, Australia; and {National(More)
1725 C oral reefs provide ecosystem goods and services worth more than $375 billion to the global economy each year (1). Yet, worldwide, reefs are in decline (1–4). Examination of the history of degradation reveals three ways to challenge the current state of affairs (5, 6). First, scientists should stop arguing about the relative importance of different(More)
We assessed how well landscape metrics at 2, 5, and 10 km scales could explain the distribution of woodland bird species in the Mount Lofty Ranges, South Australia. We considered 31 species that have isolated or partially isolated populations in the region and used the Akaike Information Criterion to select a set of candidate logistic regression models. The(More)
This study examined the genetic contribution of single male immigrants to small, inbred laboratory populations of Drosophila melanogaster. Genetic contribution was assessed by measuring the relative frequency of immigrant marker alleles in the first and second generations after immigration, while controlling for any selection effects at the marker locus,(More)