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First Time At Niche Modeling?

This is a blog on the power of numeracy. My first book — Niche Modeling — is now in print.

The first six chapters are tutorial topics in R programming and theoretical topics in niche modeling: functions, data, spatial, topology, environmental data collections, and examples. The last six chapters are about using niche modeling to detect errors: bias, autocorrelation, non-linearity, long term persistence, circularity and fraud - useful information for any biological modeler.

Forecasting the Effects of Global Warming on Biodiversity

Filed under: Uncategorized, Ecological Niche Models, Climate Change — admin @ 2:44 pm

Our much awaited paper is now published in Bioscience and available here. Only one article is available each month, and this is the lucky one. The following is the abstract.

The demand for accurate forecasting of the effects of global warming on biodiversity is growing, but current methods for forecasting have limitations. In this article, we compare and discuss the different uses of four forecasting methods: (1) models that consider species individually, (2) niche-theory models that group species by habitat (more specifically, by environmental conditions under which a species can persist or does persist), (3) general circulation models and coupled ocean–atmosphere–biosphere models, and (4) species–area curve models that consider all species or large aggregates of species. After outlining the different uses and limitations of these methods, we make eight primary suggestions for improving forecasts.We find that greater use of the fossil record and of modern genetic studies would improve forecasting methods.We note a Quaternary conundrum: While current empirical and theoretical ecological results suggest that many species could be at risk from global warming, during the recent ice ages surprisingly few species became extinct. The potential resolution of this conundrum gives insights into the requirements for more accurate and reliable forecasting. Our eight suggestions also point to constructive synergies in the solution to the different problems.

DANIEL B. BOTKIN, HENRIK SAXE, MIGUEL B. ARAÚJO, RICHARD BETTS, RICHARD H. W. BRADSHAW, TOMAS CEDHAGEN, PETER CHESSON, TERRY P. DAWSON, JULIE R. ETTERSON, DANIEL P. FAITH, SIMON, FERRIER, ANTOINE GUISAN, ANJA SKJOLDBORG HANSEN, DAVID W. HILBERT, CRAIG LOEHLE, CHRIS MARGULES, MARK NEW, MATTHEW J. SOBEL, AND DAVID R. B. STOCKWELL

Keywords: biodiversity, forecasting, global warming, modeling, Quaternary conundrum