A review of  the systematics of the genus Bradypodion (Sauria: Chamaeleonidae), with the description of two new genera.

Zootaxa 1363: 23–38. ISSN1175-5334 (online edition) 

Abstract:

The taxonomic history and composition of the genus Bradypodion as construed by Klaver & Böhme (1986) and new morphological and molecular data relevant to the taxonomy of the group is reviewed. The combined evidence strongly supports a formal rearrangement of the group into three distinct genera. Bradypodion, type species Chamaeleo pumilus Daudin 1802, is retained for the southern African species. Two new genera are erected to accommodate additional well-diagnosed clades within central and east African species previously referred to Bradypodion. Species of the “fischeri complex” are assigned to Kinyongia gen. nova, whilst the endemic Mulanje chameleon is placed in the monotypic genus Nadzikambia gen. nova.

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Samstag, 30 Januar 2021 10:35

SCOTT, A. (1995)

The Overberg Explorer.

177 Seiten, mit zahlreichen Farbfotos, Strichzeichnungen und Karten.
Overberg Conservation Services cc, Gansbaai. ISBN-13: 978-0620283212.

Inhalt:

The Overberg Explorer is a guide for environment-oriented travel in the Cape Overberg. It contains information on everything from geology to history, exploring the areas of Caledon, Hermanus, Bredasdorp and Sellendam, and various organisations who can help the traveller.

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Life on high: The diversity of small mammals at high altitude in South Africa.

Biodiversity and Conservation 21 (21): 960-31152823. DOI: 10.1007/s10531-012-0340-0.

Kurzfassung:

The Great Escarpment is the major mountain system in South Africa, yet very few biological surveys have been conducted outside of the well-known Drakensberg section. This is surprising given the important role that mountains play in local and global biodiversity patterns. In this study, small mammal diversity and community composition were estimated at three high altitude (>1,700 m) sites within the Sneeuberg Mountain Complex (SMC) of the Great Escarpment, South Africa from June 2009 to May 2010. The influences of selected environmental variables on diversity were also tested. Of 423 live-captures, a total of 292 unique individuals of 12 small mammal species (one shrew, one elephant shrew and 10 rodents) were identified during 5,280 trap nights. No single environmental variable could account for the variation observed in diversity measurements but vegetation height appeared to be the most important factor to influence the number of individuals captured. It is hypothesised that the high species richness and diversity of small mammals observed in the SMC compared to other parts of the Great Escarpment is due to the SMC being located in a transition zone of the Grassland and Nama-Karoo biomes. Our results suggest that the SMC could be important in conserving small mammal species from western and eastern assemblages across South Africa.

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Mittwoch, 27 Januar 2021 11:10

SCHMIDT, A. D. (2002)

The herpetofauna  of the Langjan Nature Reserve (Limpopo Province, Republic of South Africa) (Amphibia, Reptilia).
Die  Herpetofauna  des Langjan-Naturreservates (Provinz Limpopo, Republik Südafrika) (Amphibia,  Reptilia).  

HERPETOZOA  15 (3/4): 121-135.

Kurzfassung:

Das Langjan-Naturreservat ist ein 4774 ha großes Schutzgebiet in der Limpopo Provinz Südafrikas, 130 km nördlich der Provinzhauptstadt Pietersburg gelegen. Während einer Feldstudie von Januar bis April 1998 und drei kürzeren Aufenthalten zwischen 1999 und 2001 konnten innerhalb des Schutzgebietes insgesamt 43 Reptilien- (3 Schildkröten, 23 Eidechsen, 17 Schlangen) und 7 Amphibienarten nachgewiesen werden. Die Anzahl der aus dem Gebiet bekannten Formen erhöht sich damit auf 47 bei den Reptilien und 10 bei den Amphibien. Die von der Autorin im Untersuchungsgebiet nachgewiesenen Arten werden hinsichtlich ihrer relativen Häufigkeit, ihrer allgemeinen Lebensraumansprüche und Verbreitung im Reservat charakterisiert. Neun weitere, bisher nur außerhalb der Reservatsgrenzen nachgewiesene Reptilienarten kommen wahrscheinlich auch im Reservat selbst vor. Die Fundortbeschreibungen ausgewählter Formen werden durch ökologische, zoogeographische oder taxonomische Hin-weise ergänzt. Vier Arten {Psammobates oculiferus, Typhlosaurus lineatus subtaeniatus, Scelotes limpopoensis albiventris, Colopus wahlbergii wahlbergii) verdienen aufgrund ihrer eingeschränkten Gesamtverbreitungsgebiete bzw. Seltenheit besondere faunistische Beachtung.

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The vegetation and identification of management units of the Honnet Nature Reserve, Northern Province, South Africa.

Koedoe - African Protected Area Conservation and Science 39(1): 25-42. ISSN 0075-6458. DOI: 10.4102/koedoe.v39i1.280

Zusammenfassung:

An analysis of the vegetation of the Honnet Nature Reserve, Northern Province is presented. Releves were compiled in 56 stratified random sample plots. The Braun- Blanquet procedure revealed 12 distinct plant communities and four sub-communities. The Variable Quadrant Plot Method was used in the structural analysis of the communities and management units. The data were ordinated using Detrended Correspondence Analysis (DECORANA) to determine possible relations and gradients between and in the plant communities. Six management units were identified by means of the vegetation ordination, plant communities and the physical environment. A hierarchical classification, description and ecological interpretation of the vegetation units and a descrip- tion of the management units are presented.

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Management of reintroduced lions in small, fenced reserves in South Africa:an assessment and guidelines.

South African Journal of Wildlife Research 43(2): 138–154.

Volltext (PDF)

Zusammenfassung:

Managers of African lions (Panthera leo) on reserves where they have been reintroduced increasingly face challenges associated with ecological regulation, genetic degradation and increased susceptibility to catastrophic events. The Lion Management Forum (LiMF) was formed in 2010 to define these challenges and explore possible solutions with the view to developing appropriate management guidelines. LiMF bases its recommendations on the ecologically sound premise that managers should, as far as possible, mimic natural processes that have broken down in reserves, using proactive rather than reactive methods, i.e. management should focus on causal mechanisms as opposed to reacting to symptoms. Specifically, efforts should be made to reduce population growth and thus reduce the number of excess lions in the system; disease threats should be reduced through testing and vaccination whenever animals are translocated; and genetic integrity should be monitored. The latter is particularly important, as most of these reserves are relatively small (typically<1000 km2). An adaptive management framework is needed to implement the guidelines developed here on reserves across the country, with regional nodes addressing more local genetic issues, within an overall national plan. Ongoing monitoring and scientific assessment of behavioural, population and systemic responses of lion populations and responsive modification of the guidelines, should improve management of lions on small reserves in South Africa. This approach will provide a template for evidence-based conservation management of other threatened species. Ultimately ‘National Norms and Standards’ must be established and a ‘National Action Plan’ for lions in South Africa developed.

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Lessons from the introduces Black rhino population in Pilanesberg National Park.

Pachyderm 26: 40-51

Volltext (PDF)

Einleitung:

Due to the drastic decline in black rhino numbers, several rhino range states took steps to translocate rhino to secure areas with suitable habitat within their former range. The aim was to build-up remaining black rhino numbers as rapidly as possible, to preserve their genetic diversity in the long tern, and to provide the biggest possible buffer against future potential poaching losses.

However the re-introductions and management of these new populations has not been entirely straightforward. The translocation process needed to be perfected and new problems arose in the introduced populations which required careful consideration.

The black rhino in Pilanesberg National Park South Africa is an introduced population which, through intensive and ongoing monitoring, has improved our understanding of rhino population characteristics currently influencing the conservation goals for black rhino.

Pilanesberg National Park was proclaimed in 1979. It covers 550km2  of rocky hills and broad alluvial valleys in a weathered alkaline volcano. The summer rainfall averages 637mm annually. Black rhino introductions occurred in several stages, beginning in 1981, and involved 24 animals in total. By the start of 1996, the population had grown to 42 animals, and in June that year Pilanesberg became a donor reserve when nine black rhino were translocated to Madikwe Game Reserve. This paper summarises the history and characteristics of the Pilanesberg population up to this stage.

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A Note on the Reestablishment of the Cheetah Population in the Pilanesberg National Park, South Africa.

African Journal of Wildlife Research 49: 12-15. DOI: 10.3957/056.049.0012.

Volltext (PDF)

Einleitung:

The establishment of protected areas is recognized as a means to conserve large mammal species, and cheetah (Acinonyx jubatus) conservation is well served by these protected areas. In South Africa, if not in one of the larger national parks (>10 000 km2) or free-roaming in the northern provinces, populations of cheetahs occur in medium-sized reserves and form part of a managed metapopulation where periodic transfers of individuals occur between them to retain genetic integrity. The Pilanesberg National Park is one such reserve within the managed metapopulation. Here, we firstly document the reproductive success of a single reintroduced female cheetah and, secondly, discuss the population’s recovery in the context of the managed metapopulation.

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Sonntag, 24 Januar 2021 08:14

BRETT, M. R. (1989)

The Pilanesberg: Jewel of Bophuthatswana.

140 Seiten, zahlreiche farbige Illustrationen.
Frandsen Publishers, Sandton. ISBN 13: 9780620135962

Einband / Einleitung (PDF)

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Nama-Karoo Biome.

In Buch: The vegetation of South Africa, Lesotho and Swaziland: 324-347.

Publisher: SANBI, Pretoria

Volltext: https://www.researchgate.net/publication/236982004_Nama-Karoo_Biome

Aus der Einleitung:

The Nama-Karoo is a large, landlocked region on the central plateau of the western half of South Africa and extends into southeastern Namibia. The name is derived from the Khoi San word kuru meaning ‘dry’. Its extensive surface (248 284 km2 or 19.6% of the area covered by the map) is flanked by six biomes: the Succulent Karoo to the south and west, Desert to the northwest, the arid Kalahari form of the Savanna Biome to the north, Grassland to the northeast, Albany Thicket to the southeast and small parts of Fynbos to the south. The Nama-Karoo has a continental-type climate. In South Africa, only the Desert Biome has a higher variability in annual rainfall and the Kalahari Savanna greater extremes in temperature. The Nama-Karoo has most rainfall in the summer half of the year, especially in late summer.

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