The effects of Pleistocene glaciations on the genetic characteristics of the most austral conifer in the world, Pilgerodendron uviferum, were analysed with specific reference to the hypothesis that the species persisted locally in ice-free areas in temperate South America.
Results indicated that Pilgerodendron populations are highly monomorphic, probably reflecting past population bottlenecks and reduced gene flow. Southernmost populations tend to be the least genetically variable and were therefore probably more affected by glacial activity than northern ones. Populations located outside ice limits seem to have been isolated during the glacial period. The presence of centres of genetic diversity, together with the lack of a significant correlation between genetic and geographical distances and the absence of geographical patterns of allelic frequencies at most analysed alleles, may indicate that Pilgerodendron did not advance southward after the last glaciation from a unique northern refugium, but spread from several surviving populations in ice-free areas in Patagonia instead.Resource Type: Journal Papers
The third edition of Global Biodiversity Outlook (GBO-3) summarizes the latest data on status and trends of biodiversity and draws conclusions for the future strategy of the Convention. GBO-3 is based on a range of information sources, including National Reports, biodiversity indicators information, scientific literature, and a study assessing biodiversity scenarios for the future.Resource Type: Reports
The objectives of the World Heritage Convention are the identification, protection, conservation and presentation of the world's natural and cultural heritage and ultimately, the successful transmission of them to future generations. UNEP-WCMC and IUCN have undertaken a range of global and regional studies to support State Parties to the Convention in the selection of potential sites, and to assist in the evaluation of nominations.Resource Type: Reports
UNEP-WCMC and IUCN, with support from UNESCO, compile information sheets for all properties inscribed on the World Heritage List for natural or mixed (natural and cultural) reasons. These sheets are usually prepared following the inscription of a property on the World Heritage List. The sheets are updated from time to time. The latest available sheets are published on this webpage.Resource Type: Reports
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