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DNA clues to inform conservation in Africa
May 23, 2007Tracing the evolutionary history of wildlife could improve global habitat conservation, a major Cardiff University study has found.
Researchers in the School of Biosciences analysed the African bushbuck, a common species which lives in most sub-Saharan habitat types to test whether DNA similarity between populations living in different habitats can reveal the similarity of those ecoregions now and in the past.
Professor Mike Bruford, School of Biosciences, co-author of the study, said: "The conservation of habitat or ecoregion biodiversity is one of our greatest challenges. This new approach will allow conservationists in Africa to focus their efforts on the most biodiverse and more unique habitats which harbour the most genetically distinct populations."
The researchers suggest the study provides a framework for the incorporation of genetic and biogeographic information into a more widely applicable model for pan-African conservation and, potentially, for the conservation of other global regions.
Cardiff University
British butterfly reveals role of habitat for species responding to climate change
Most wild species are expected to colonise northwards as the climate warms, but how are they going to get there when so many landscapes are covered in wheat fields and other crops?
Experts develop global action plan to save amphibians facing extinction
A summit of leading scientists have agreed to an action plan intended to save hundreds of frogs, salamanders and other amphibians facing extinction from familiar threats such as pollution and habitat destruction, as well as a little-known fungus wiping out their populations.
Ecosystem consequences of a single, genetically based plant trait
Climate is often touted as the most important regulator of decomposition and nutrient cycling processes in forest ecosystems, however, in the forthcoming issue of Ecology Letters, Schweitzer and her research team from Northern Arizona University and the University of Wisconsin, USA, demonstrate that plant genes can have strong effects on the availability of nitrogen for tree growth, via a tight coupling between chemicals produced by plants to deter herbivory and rates of soil nitrogen turnover. They found that the concentration of condensed tannins in leaf litter produced by cottonwood trees is genetically based, and explains the majority of the variation in the production of plant-available
Ecological communities suffer dramatic changes when non-native species are introduced by humans!
Ecological communities suffer dramatic changes when non-native species are introduced by humans. Such introductions have been documented in hundreds of locations and appear to be common in marine and island habitats. One of the best-studied cases of a species that suddenly appeared in the New England intertidal, and subsequently spread rapidly southward accompanied by significant changes in the intertidal community, is the "European periwinkle" Littorina littorea. In the July issue of Ecology Letters, a team lead by a scientist from the University of New Mexico used detailed genetic analysis to show that this snail could not have been introduced by European colonists, as is often suggested.
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Habitat Fragmentation and Landscape Change: An Ecological and Conservation Synthesis by David Lindenmayer (Author) Offers a unique mix of theoretical and practical information, outlining general principles and approaches and illustrating those principles with case studies from around the world. |
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got llama? Men's Tee Shirt 3XL-Charcoal by 99 Volts |
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