This paper reviews the potential for carbon sequestration in dryland ecosystems, which includes forests, but also covers other habitats, such as grasslands, and, importantly, soils. It also considers ways in which carbon storage in drylands affects land degradation issues.
Resource Type: ReportsSince the late 1970s the UNEP World Conservation Monitoring Centre (UNEP-WCMC) has delivered services that support implementation of international biodiversity-related agreements at global, regional and national levels. These services not only support the work of the agreement secretariats, but also of the advisory and governance bodies, and of governments party to the various agreements. The aim of this paper is to illustrate this work through examples of work we have undertaken.
The support that UNEP-WCMC provides is based on expert understanding of the agreements and how they work, resulting from many years of experience and close relationships with secretariats.
Resource Type: ReportsThis study demonstrates the utility of carbon isotope discrimination in describing genetic adaptation to arid environments, although it is probably most useful in detecting differentiation when the strategy of the species under investigation is to increase water use efficiency, rather than drought-avoidance. The results suggest that populations on the eastern and western sides of the Andes should be treated as separate management units for the purposes of conserving the genetic resource of this species.
Resource Type: Journal PapersArctic Flora and Fauna: Status and Conservation is the first truly circumpolar overview of Arctic biodiversity written for the nonspecialist. It provides the reader with a clear understanding of the importance of the Earth's largest ecoregion and its status in the face of a rapidly changing world.
Resource Type: ReportsAn international team of research scientists has created a peer-reviewed website, http://www.arctic.noaa.gov/reportcard/, which tracks multiple changes in the Arctic environment (Fig. 1). While the 2007 loss of summertime sea ice is the most dramatic example, changes are also seen in the atmosphere, on land and in the ocean, and as shifts in location and abundance of Arctic species.
Resource Type: ReportsArctic ecosystems are harsh and inhospitable, containing very low species diversity. However, although the habitats are relatively homogeneous throughout the circumpolar Arctic region, differences in species richness and areas of outstanding species richness can be recognised. Analysis of patterns in species diversity can be used to prioritise regions for conservation in the Arctic. Towards this goal, the Conservation of Arctic Flora and Fauna (CAFF) programme has been compiling information on the distribution and abundance of species and ecosystems in the Arctic. The work described in this report was designed to complement other ongoing projects and was included in the CAFF V work plan. It was carried out under an EU fellowship at UNEP-WCMC.
Resource Type: ReportsAn assessment of impacts on Arctic terrestrial ecosystems has emphasized geographical variability in responses of species and ecosystems to environmental change. This variability is usually associated with north-south gradients in climate, biodiversity, vegetation zones, and ecosystem structure and function. It is clear, however, that significant east-west variability in environment, ecosystem structure and function, environmental history, and recent climate variability is also important.Some areas have cooled while others have become warmer.
Overall, the subregional synthesis demonstrates the difficulty of generalizing projections of responses of ecosystem structure and function, species loss, and biospheric feedbacks to the climate system for the whole Arctic region and implies a need for a far greater understanding of the spatial variability in the responses of terrestrial arctic ecosystems to climate change.
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