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  World Database on Protected Areas (WDPA) Data Standards »

  This document provides information about the standards and data held within the World Database on Protected Areas (WDPA). The WDPA Data Standards specify a common set of information that data providers are asked to provide when submitting data to the WDPA. These ensure that the most vital information is collected and that the data is supplied in a common format that is globally interoperable. This document also provides detailed information on the type of information and each attribute/field within the WDPA.

  Resource Type: Reports
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  Model-based uncertainty in species range prediction »

  Our analyses show significant differences between predictions from different models, with predicted changes in range size by 2030 differing in both magnitude and direction (e.g. from 92 loss to 322 gain). We explain differences with reference to two characteristics of the modelling techniques: data input requirements (presence/absence vs. presence-only approaches) and assumptions made by each algorithm when extrapolating beyond the range of data used to build the model. The effects of these factors should be carefully considered when using this modelling approach to predict species ranges. Main conclusions We highlight an important source of uncertainty in assessments of the impacts of climate change on biodiversity and emphasize that model predictions should be interpreted in policy-guiding applications along with a full appreciation of uncertainty.

  Resource Type: Journal Papers
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  Patterns of isozyme variation as indicators of biogeographic history in Pilgerodendron uviferum (D. Don) Florin »

  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
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  1997 United Nations List of Protected Areas »

  The United Nations List of Protected Areas is an essential reference document for all who want to understand the progress made in responding to the challenges of biodiversity loss and other environmental threats around the world. It is a record of extraordinary human achievement over 125 years - a commitment by nations, peoples, groups and individuals to safeguard areas of land and sea from destruction. Protected areas represent human ideals at their best - they express a long term vision and a broad sense of responsibility towards people and nature.

  This version of the list is the twelfth in a series, each recording steady expansion in the total area protected. There are now some 12,754 areas in the UN List, covering almost 8% of the land surface of the world (a far smaller proportion of the oceans is protected). Compared to the previous, 1993 edition of the of the UN List, this report includes 2,933 more sites covering 3.9 million more square kilometres. At the end of the century it can be said that practically every country has protected areas; some have a very sophisticated network of sites.

  Resource Type: Reports