Spiders (Arachnida: Araneae) of the vegetation layer of the Mkambati Nature Reserve, Eastern Cape, South Africa

Koedoe - African Protected Area Conservation and Science

 
 
Field Value
 
Title Spiders (Arachnida: Araneae) of the vegetation layer of the Mkambati Nature Reserve, Eastern Cape, South Africa
 
Creator Dippenaar-Schoeman, Anna S. Hamer, Michelle Haddad, Charles R.
 
Subject Arachnology; Conservation Biodiversity; endemism; Eastern Cape; fire; forest; grassland; Pondoland; South African National Survey of Arachnida
Description The Pondoland region of the Eastern Cape province, South Africa is very poorly studied with regard to invertebrate diversity, particularly in the case of arachnids. Accordingly, and in view of proposed infrastructural and mining developments in this ecologically sensitive area of high plant endemism, baseline data are provided on spiders (Araneae) of the vegetation layer (i.e. excluding the ground-dwelling fauna) of the Mkambati Nature Reserve (MNR). Spiders were collected at 26 sites (six forest and 20 grassland sites) in the MNR over an eight-day period, using sweep sampling and active searching of flowers in grassland and tree beating in forests, as part of a broader biodiversity survey. Additional specimens were collected with Malaise and pan traps. A total of 1275 specimens were sampled, representing 132 species (6.6% of the total number recorded in South Africa) in 103 genera and 29 families. Theridiidae and Araneidae were the most diverse spider families in the reserve, represented by 22 species each (16.7% of the total), followed by Thomisidae with 19 species (14.4%) and Salticidae with 18 species (13.6%). Grassland and forest had distinct spider faunas, with only 24.2% of species being recorded from both biomes. The average number of species sampled per site in grassland and forest was 26 species for both habitats, although values for the two biomes are not directly comparable because different sampling methods were used. All 132 species are new records for the reserve, of which 20 were new records for the Eastern Cape and at least eight spider species may be new to science. The spider diversity captured despite temporal and methodological limits indicates that many additional species are likely to occur in the reserve. Conservation implications: If the MNR is not adequately conserved at least five new species, which may be confined to the area, would be at high risk of extinction and 15 other species endemic to the Pondoland and KwaZulu-Natal region would have their risk of extinction increased.
 
Publisher AOSIS Publishing
 
Contributor Earthwatch Institute Eastern Cape Nature Conservation National Research Foundation
Date 2011-11-11
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — Sweep-netting; beat sampling; active searching
Format text/html application/epub+zip text/xml application/pdf
Identifier 10.4102/koedoe.v53i1.1058
 
Source Koedoe; Vol 53, No 1 (2011); 10 pages 2071-0771 0075-6458
 
Language eng
 
Relation
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https://koedoe.co.za/index.php/koedoe/article/view/1058/1333 https://koedoe.co.za/index.php/koedoe/article/view/1058/1341 https://koedoe.co.za/index.php/koedoe/article/view/1058/1335 https://koedoe.co.za/index.php/koedoe/article/view/1058/1331 https://koedoe.co.za/index.php/koedoe/article/downloadSuppFile/1058/840 https://koedoe.co.za/index.php/koedoe/article/downloadSuppFile/1058/841 https://koedoe.co.za/index.php/koedoe/article/downloadSuppFile/1058/842 https://koedoe.co.za/index.php/koedoe/article/downloadSuppFile/1058/843 https://koedoe.co.za/index.php/koedoe/article/downloadSuppFile/1058/844
 
Coverage South Africa; Mkhambathi Nature Reserve Modern Abundance; species richness; frequency of occurrence; guilds
Rights Copyright (c) 2011 Anna S. Dippenaar-Schoeman, Michelle Hamer, Charles R. Haddad https://creativecommons.org/licenses/by/4.0
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