02805nas a2200337   4500008004100000245006500041210006500106260000800171300001200179490000600191520186300197653002302060653002002083653001702103653001702120653001802137653002402155653002502179653001302204653002202217653002202239653002702261653002102288653001902309100002302328700002602351700001802377700001802395700002002413856003402433       2002                        eng d00aVulnerability of South African animal taxa to climate change0 aVulnerability of South African animal taxa to climate change  cJul  a679-6930 v83 aThe responsiveness of South African fauna to climate change events is poorly documented and not routinely incorporated into regional conservation planning. We model the likely range alterations of a representative suite of 179 animal species to climate change brought about by the doubling of CO2 concentrations. This scenario is expected to cause a mean temperature increase of 2 degreesC. We applied a multivariate climate envelope approach and evaluated model performance using the most comprehensive bird data set. The results were encouraging, although model performance was inconsistent in the eastern coastal area of the country. The levels of climate change induced impacts on species ranges varied from little impact to local extinction. Some 17% of species expanded their ranges, 78% displayed range contraction (4-98%), 3% showed no response and 2% became locally extinct. The majority of range shifts (41%) were in an easterly direction, reflecting the east-west aridity gradient across the country. Species losses were highest in the west. Substantially smaller westward shifts were present in some eastern species. This may reflect a response to the strong altitudinal gradient in this region, or may be a model artifact. Species range change (composite measure reflecting range contraction and displacement) identified selected species that could act as climate change indicator taxa. Red-data and vulnerable species showed similar responses but were more likely to display range change (58% vs. 43% for all species). Predictions suggest that the flagship, Kruger National Park conservation area may loose up to 66% of the species included in this analysis. This highlights the extent of the predicted range shifts, and indicates why conflicts between conservation and other land uses are likely to escalate under conditions of climate change.10abeetles coleoptera10acommon fly belt10aconservation10aDung beetles10afragmentation10ageographical ranges10ahabitat availability10aland-use10aprotection status10arange contraction10asensed vegetation data10aspecies turnover10atsetse habitat1 aErasmus, B., F. N.1 aVan Jaarsveld, A., S.1 aChown, S., L.1 aKshatriya, M.1 aWessels, K., J.  u<Go to ISI>://00017605580000700683nas a2200169   4500008004100000245012700041210006900168300001000237490000600247653001700253100001700270700001800287700002100305700002300326700002600349856013800375       2000                        eng d00aConservation strategies for poorly surveyed taxa: a dung beetle (Coleoptera, Scarabaeidae) case study from southern Africa0 aConservation strategies for poorly surveyed taxa a dung beetle C  a45-560 v410aDung beetles1 aKoch, S., O>1 aChown, S., L.1 aDavis, A., L. V.1 aEndrody-Younga, S.1 aVan Jaarsveld, A., S.  uhttps://scarabnet.myspecies.info/conservation-strategies-poorly-surveyed-taxa-dung-beetle-coleoptera-scarabaeidae-case-study-southern01632nas a2200181   4500008004100000245010400041210006900145260000800214300001200222490000700234520106900241653001701310100002501327700002001352700001801372700002601390856003401416       1999                        eng d00aConservation of heterogeneity among dung beetles in the Maputaland Centre of Endemism, South Africa0 aConservation of heterogeneity among dung beetles in the Maputala  cMay  a145-1530 v883 aIn southern Africa the Maputaland Centre is one of the most significant, though less well-known, centres of biotic endemism. Here we examine variation in dung beetle assemblages between habitats and between reserves on two Maputaland reserves (Tembe Elephant Park and Sileza Nature Reserve). Dung beetle assemblages were found to be homogeneous within habitat types and within reserves, but assemblages differed between habitat types (Sand Forest and Mixed Woodland). There was, however, significant between-reserve heterogeneity in dung beetle assemblages for each particular habitat type. Given that there are significant differences in both dung beetles and plants, it is clear that these forests must be conserved in both Tembe and Sileza, especially because of increasing damage by elephants to Sand Forests in Tembe. We identify dung beetle indicator species that are specific to each habitat type in each reserve, and detector species that can be used to monitor changes in Sand Forests in those reserves. (C) 1999 Elsevier Science Ltd. All rights reserved.10aDung beetles1 aVan Rensburg, B., J.1 aMcGeoch, M., A.1 aChown, S., L.1 aVan Jaarsveld, A., S.  u<Go to ISI>://00007834290000101975nas a2200181   4500008004100000245005900041210005600100260000800156300001400164490000600178520145300184653002901637100002001666700002601686700002101712700002601733856003401759       1998                        eng d00aAn evaluation of the gradsect biological survey method0 aevaluation of the gradsect biological survey method  cAug  a1093-11210 v73 aBiological surveys are necessary to gather species distribution data for the identification of priority conservation areas. The rationale of the gradsect method is that sampling (transects) oriented along the steepest environmental gradient should detect the maximum number of species in an area. The efficiency of the gradsect survey method was evaluated by comparing it to random, systematic and habitat-specific survey methods, during faunal held surveys (target groups: birds and dung beetles). Three gradsects were positioned within the study area to follow the major physiographical characteristics, incorporate all environmental strata (land facets) and yet be as logistically convenient as possible. The efficiency of survey methods was expressed as the number of species recorded per sampling unit effort and illustrated using bootstrap estimations to plot species accumulation curves. The gradsect method proved to be as efficient as the habitat-specific survey method and consistently more efficient than the systematic and random surveys for both taxa sampled. The present study therefore illustrates that the gradsect survey method provides a cost- effective and swift representative sample of regional fauna. Moreover, the results indicate that land-form sequences, specifically 'land facets', are useful surrogates when sampling environmental diversity where distinct environmental gradients such as altitude and rainfall are absent.10aecological data analysis1 aWessels, K., J.1 aVan Jaarsveld, A., S.1 aGrimbeek, J., D.1 aVan der Linde, M., J.  u<Go to ISI>://000078129800007