First test of predictions of climate change impacts on biodiversity
...dict accurately how climate change will affect the distributions of animals and plants? The Oxford Group may have found a solution. "The accuracy of the predictions can be drastically increased if a set of alternative models are compared and used together to create a 'consensus' projection" Says Dr Arajo. Using th...New research presents reserve selection using nonlinear species distribution models
...redicted effects of landscape structure to species distributions are accounted for in a near- optimal manner. If ef...pically based on currently observed (or predicted) distributions of species, and the essential aim is to identify areas of overlap where valuable occurrences of many...Diversity, endemism, and age distributions in macroevolutionary sources and sinks
Understanding the large-scale processes that shape distributions of species diversity is a long-standing challenge ...ersal when testing hypotheses about the geographic distributions of organisms....Researchers find three major beetle groups coming up one testis short
...t was completely random." Based on the geographic distributions of the beetle groups involved, Liebherr estimates that the origins of monorchy in the beetles occurred 90 to 100 million years ago during the Cretaceous period. "That era witnessed a dramatic increase in the diversity of organisms," he said. He ad...Fragmented habitats no ultimate refuges for forest-dwelling tropical birds
... What emerged was their own estimate of remaining distributions of two categories of bird species. Those categories were "forest obligate" birds that cannot exist outside the deep woods and purported "survivor" birds that could make do in more marginal "secondary habitats." "There is a subset of forest endemic bi...Study in Royal Society journal on evidence for impact of global warming on bird populations
...is structural randomness. Understanding such force distributions is crucial for the prediction of the failure condi...f these materials. This study shows that the force distributions can be accurately described by an analogue of the Second Law of Thermodynamics, which governs the di...Brain-derived neurotrophic factor (BDNF) appears to modify elements of alcoholism
...notyped. Results indicate that genotype and allele distributions of the BDNF gene polymorphism did not differ significantly between alcoholic and control subjects. However, comparison of clinical characteristics across G196A genotypes showed that alcoholic subjects with violent tendencies and a history of deliriu......on said. He used existing data on sedimentary rock distributions and abundances to calculate rates of natural erosion. "If you ask how fast erosion takes place over geologic time---say over the last 500 million years---on average, you get about 60 feet every million years," Wilkinson said. In those parts of the ...