|Most recent IBA monitoring assessment|
|Year of assessment||Threat score (pressure)||Condition score (state)||Action score (response)|
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This site consists of an arc of hills and a series of forests surrounding the western rim of Tzaneen. It includes New Agatha, Mamatlhola and Serala State Forests, Wolkberg Wilderness Area and Lekgalameetse Nature Reserve to the south of the town. Baccarat, De Hoek and Woodbush Forest Reserves lie to the west and Conningsby Plantation, Broederstroom, Grootbos Reserve, Westfalia Estates and Duiwelskloof Forest to the north of Tzaneen. Seshwene Peak (1,253 m) rises to the north of Tzaneen with Vaalkrans (1,607 m) and De Hoek (1,696 m), the region’s highest peak, rising to the west of the town. The landscape consists of spectacular mountains with steep slopes, gorges and amphitheatres.Despite the region being dominated by a matrix of Eucalyptus and pine Pinus plantations, large patches of good quality Afromontane forest and small grassland patches are found scattered throughout the valleys and moist basins of the Tzaneen mountains. Forest trees of general occurrence include species of Rapanea, Xymalos, Podocarpus, Trichocladus, Rhus, Halleria, Ilex and Curtisia. Ferns such as tree-fern Cyathea, shrubs and small trees are often abundant along the forest edges. The forest patches are interspersed with grassland, wooded savanna and scrub-forest dominated by Trichilia, Combretum, Parinari, Acacia, Polystachya, Mystacidium, Protea, Faurea and Pterocarpus.
See Box and Tables 2 and 3 for key species. The area holds Macheiramphus alcinus, which breeds in plantations and forest reserves, as do both Polemaetus bellicosus and Stephanoaetus coronatus. The mountain cliffs hold Falco peregrinus. This is one of very few areas in South Africa holding Telophorus multicolor, which inhabits forest and forest-edge habitats. The region’s forests are also home to Poicephalus robustus robustus, Zoothera gurneyi, Lioptilus nigricapillus, Buteo oreophilus, Tauraco corythaix, Cossypha dichroa, Cercotrichas signata, Coracina caesia, Telophorus olivaceus, Mandingoa nitidula and Serinus scotops. Some of the region’s rivers, particularly those at lower altitude, hold Podica senegalensis and Gorsachius leuconotus. Marshy and open climax grasslands hold Schoenicola brevirostris and Sarothrura affinis.
Non-bird biodiversity: The extremely rare and localized dolomite-restricted cycad Encephalartos dolomiticus, which occurs near Penge, almost certainly occurs within the site; its global range is restricted to the Wolkberg. A large population (1,000 individuals) of the slightly more widespread cycad Encephalartos transvenosus occurs in the Lekgalameetse Nature Reserve. Several other range-restricted plants occur within the site, including Euphorbia restricta, Cyrtanthus thornicroftii, Kniphofia coralligemma, Encephalartos eugene-maraisii and E. inopus, all of which are endemic to the Mpumalanga–Northern Province escarpment. The nominate subspecies of the range-restricted frog Breviceps sylvestris is endemic to the Wolkberg. Three reptile species have global ranges restricted to this IBA: Afroedura multiporis and the threatened Lygodactylus methueni (VU) are found in the forests, and Acontophiops lineatus occurs in the montane grasslands. Another species, Tetradactylus eastwoodae (EX), was endemic to this IBA, but it is thought to be extinct, as pine trees were planted throughout its remaining habitat. Mammals include Manis temminckii (LR/nt).
BirdLife International (2021) Important Bird Areas factsheet: Wolkberg Forest Belt. Downloaded from http://www.birdlife.org on 08/03/2021.