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Climate refugia, locations where taxa survive periods of regionally adverse climate, are thought to be critical for maintaining biodiversity through the glacial-interglacial climate changes of the Quaternary. A critical research need is to better integrate and reconcile the three major lines of evidence used to infer the existence of past refugia - fossil(More)
Recent global warming is acting across marine, freshwater, and terrestrial ecosystems to favor species adapted to warmer conditions and/or reduce the abundance of cold-adapted organisms (i.e., "thermophilization" of communities). Lack of community responses to increased temperature, however, has also been reported for several taxa and regions, suggesting(More)
By the use of immunocytochemical staining methods, we studied the morphology and distribution of 5HT and NPY immunoreactive cells and fibres in the mouse adrenal gland. The 5HT-immunoreactive cells were numerous and widely localized in the medullar tissue. These cells were arranged in three cellular types with regard to their morphological and(More)
a r t i c l e i n f o Keywords: genetic diversity glacial refugia hindcasting palaeobiogeography Spain species distribution modelling The forests in the Iberian Peninsula have been strongly influenced by past climatic changes, but reconstructing their historical distributions and dynamics is very difficult due to the complex climatic characteristics and(More)
The history of Earth is a history of recurrent climate change. Today's global biodiversity demonstrates that many species have been able to cope with climate shifts in the past. Yet great concern exists that modern climate change is likely to overstrain the capacity of many species to track suitable climate spaces, potentially leading to widespread(More)
PREMISE OF THE STUDY Microsatellite primers were developed for the evergreen tree Laurus to investigate population genetic structure and patterns of gene flow via animal-dispersed pollen and seeds. METHODS AND RESULTS Twenty polymorphic nuclear microsatellite markers were developed using CA, GA, AAC, and ATG n-enriched genomic libraries. Given the(More)
Competition for light has profound effects on plant performance in virtually all terrestrial ecosystems. Nowhere is this more evident than in forests, where trees create environmental heterogeneity that shapes the dynamics of forest-floor communities(1-3). Observational evidence suggests that biotic responses to both anthropogenic global warming and(More)
SCIENCE sciencemag.org P H O T O : D A N M U L L E N / F L IC K R worldwide to create the attendant monitoring programs that measure the successes of these changes, warn about and characterize impending system failures, and allow us to learn how to manage diminished pollination capacity. Food security will require this expertise. Bees are not optional.(More)
An accurate understanding of the factors that influence farmers’ adoption of a crop is critical for effective policy promotion and technical support. Agroforestry crop adoption is a complex topic involving many factors not often addressed by tradition crop adoption models. This complexity, when applied to Jatropha (Jatropha curcas L.), an often widely(More)
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