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Field Application of Carbosulfan for the Protection of Eucalypt Transplants from Termite Attack
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R. Mazodze --- , ZIMBABWEThree trials were set up to test five different field application rates of 10% carbosulfan to protect eucalypt transplants from termite attack. A standard nursery treatment was also included in the trials. -
Evaluation of chemical control measures for termites in maize
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.F. Riekert --- , South Africa J. Van den Berg --- ,Field trails were conducted from the 1994/95 to 2000/2001 growing seasons to evaluate various insecticides for preventative and corrective control of the fungus-growing termites, Microtermes sp., Odontotermes sp. and Allodontermes sp. in maize. The incidence of lodged maize plants was... -
Evaluation of maize cultivars and rotation crops for resistance to damage by fungus-growing termites
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.F. Riekert --- , South Africa J. van den Berg --- , South AfricaThe fungus-growing termites, Microtermes spp. and Allodontermes spp. are important maize pests in sub-Saha- ran Africa. The use of sunflower and sorghum as alternate or rotation crops with maize to reduce termite infestations was evaluated in field trials in South... -
Effect of planting and harvesting dates on fungus-growing termite infestations in maize
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. van den Berg --- , South Africa H.F. Riekert --- , South AfricaFungus-growing termites (Microtermes spp. and Allodontermes spp.) damage maize roots and cause lodging. The pattern of attack, incidence of lodging, and the effect of planting and harvesting dates on damage and yield were studied in field trials over five seasons... -
A CONCEPTUAL MODEL OF A SILTATION SYSTEM IN SHALLOW LAKES WITH LITTORAL VEGETATION
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.J. Weisser --- Facultad de Ciencias,In shallow lakes a siltation system develops when wind driven water turbulence erodes the lake floor, silt is resuspended and transported by means of waterdrift into the littoral vegetation. Here, due to the resistance of the vegetation, the turbulence is... -
AQUATIC MACROPHYTE COMMUNITIES OF THE WILDERNESS LAKES: COMMUNITY STRUCTURE AND ASSOCIATED ENVIRONMENTAL CONDITIONS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: Clive Howard-Williams --- , South AfricaThe structure and summer biomass (g m−2 dry mass) of the principal aquatic macrophyte communities of the Wilderness Lakes were measured. Both emergent and submerged communities were included in the study. Productivity estimates were made by multiplying biomass by production/biomass... -
Impacts of high utilisation pressure on biodiversity components in Colophospermum mopane savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MC Rutherford --- SANBI, Applied Biodiversity Research Division, South Africa LW Powrie --- SANBI, Applied Biodiversity Research Division, South Africa DI Thompson --- NRF/SAEON, South AfricaThis study aimed to quantify and evaluate the effects of heavy land utilisation, mainly grazing, on plant species richness and diversity, species abundance, vegetation structure and soil characteristics in a communal area in Colophospermum mopane dominated savanna in southern Africa... -
Changes in the distribution of emergent aquatic plants in a brackish South African estuarine-lake system
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: IA RussellVegetation mapping in the Wilderness Lakes indicated that, between 1975 and 1997, prominent increases occurred in the distribution of the mapping units Phragmites australis (53.9ha; +53%), grass or fields (23.1ha; +35%) and scrub or trees (12.2ha; +45%). Over the same... -
Reeds as indicators of nutrient enrichment in a small temporarily open/ closed South African estuary
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LRD Human --- Department of Botany, South Africa JB AdamsThis study investigated the use of δ15N levels in Phragmites australis reeds as an indicator of nutrient input into the small temporarily open/closed East Kleinemonde Estuary, Eastern Cape, South Africa. Nutrient (NH4 and SRP) concentrations decreased from the bank towards... -
Three new species of the marine littoral mite Hyadesia (Parahyadesia) (Astigmata: Hyadesiidae) from southern Africa
Item type: Journal Article • Journal: African Zoology • Authors: David J. Marshall --- Department of Zoology, South Africa Kaajial Ugrasen --- Department of Zoology, South AfricaThe marine mite family Hyadesiidae (Astigmata) comprises two genera (Hyadesia and Amhyadesia) with about 40 species worldwide. The taxon is restricted to littoral/supralittoral zones, having no true terrestrial representation. Collections from across southern Africa, from Elandsbaai on the west coast... -
Comparison of nest shapes and densities of two sympatric species of Cubitermes (Isoptera: Termitidae: Termitinae) as clues for the study of their population dynamics
Item type: Journal Article • Journal: African Zoology • Authors: Solange Patricia Wango --- Département des sciences de la vie, Faculté des Sciences, Central African Republic Guy Josens --- Département de Biologie des Organismes, BelgiumTwo species of Cubitermes coexist in the grassy Loudetia Savanna of Bondoé, in the Central African Republic, namely C. sankurensis (Wasmann, 1911) and C. ugandensis (Fuller, 1923) Despite the obvious size difference between individuals their nests have the same general... -
Two new species of Schusteria (Acari: Oribatida: Ameronothroidea) from marine shores in southern Africa
Item type: Journal Article • Journal: African Zoology • Authors: David J. Marshall --- Department of Zoology, South Africa Philip J.A. Pugh --- British Antarctic Survey, United KingdomOribatid mites are typically terrestrial, though many species of Ameronothroidea are marine intertidal. Marine ameronothroids are cosmopolitan with genera being endemic to the Holarctic, sub-Antarctic, or equatorial Indo-Pacific and tropicalAtlantic regions. Recent collections from rocky-shores and mangroves of the subtropical... -
Termite species richness, composition and diversity on five farms in southern Kunene region, Namibia
Item type: Journal Article • Journal: African Zoology • Authors: J. Zeidler --- Integrated Environmental Consultants Namibia, Namibia S. Hanrahan --- Department of Animal, Plant and Environmental Sciences, South Africa M. Scholes --- Department of Animal, Plant and Environmental Sciences, South AfricaA survey was conducted on five farms in former Damaraland, a communal farming area in arid northwestern Namibia. The aims of the survey were to establish termite inventories for each site and to investigate whether termite diversity is determined by... -
Ectoparasite diversity on rodents at De Hoop Nature Reserve, Western Cape Province
Item type: Journal Article • Journal: African Zoology • Authors: S. Matthee --- Department of Conservation Ecology and Entomology, South Africa I.G. Horak --- Department of Veterinary Tropical Diseases, South Africa L. Van der Mescht --- Department of Conservation Ecology and Entomology, South Africa E.A. Ueckermann --- ARC Plant Protection Research Institute, South Africa F.G.T Radloff --- Department of Botany and Zoology, South AfricaFleas, lice, mites and ticks were collected from 41 Rhabdomys pumilio and seven Otomys irroratus at De Hoop Nature Reserve in the Western Cape Province of South Africa. The aims of the study were firstly to quantify parasite abundance and...