Zobrazeno 1 - 10
of 242
pro vyhledávání: '"Ed T.F. Witkowski"'
Autor:
Tsitsi Sithandiwe Maponga, Hilton Garikai Taambuka Ndagurwa, Justice Muvengwi, Ed T.F. Witkowski
Publikováno v:
Global Ecology and Conservation, Vol 51, Iss , Pp e02931- (2024)
By increasing resource heterogeneity, mistletoe-infected trees can restructure plant community processes and distribution patterns. No information is available on how mistletoe-infected Vachellia (Acacia) karroo trees within V. karroo dominated stand
Externí odkaz:
https://doaj.org/article/044ff95a27c14dc3930972de83241fef
Autor:
Amanda Khosa, Hilton G.T. Ndagurwa, Ed T.F. Witkowski, Simbai A. Mutematemi, Admire T. Mrewa, Josephine Zisadza, Justice Muvengwi
Publikováno v:
Trees, Forests and People, Vol 14, Iss , Pp 100452- (2023)
Species distribution modelling based on bioclimatic variables to understand habitat suitability and changes in range dominates studies on the spatial distribution of baobabs, which limits our understanding of how the small-scale plant–plant interac
Externí odkaz:
https://doaj.org/article/bcc80b05f2604385a0ac042e1469d563
Autor:
Amanda Khosa, Hilton G.T. Ndagurwa, Ed T.F. Witkowski, Simbai A. Mutematemi, Admire T. Mrewa, Josephine Zisadza, Tatenda Nyenda, Justice Muvengwi
Publikováno v:
Global Ecology and Conservation, Vol 46, Iss , Pp e02556- (2023)
The impacts of the expanding African elephant (Loxodonta africana) population in southern Africa leads to a shift in savanna vegetation community composition and structure. However, little has been done to understand the effect of elephants on the st
Externí odkaz:
https://doaj.org/article/66e4284ee9f64661ae25ab4a85591ebb
Publikováno v:
Global Ecology and Conservation, Vol 32, Iss , Pp e01897- (2021)
In savanna ecosystems, tree canopy patches differ in plant species composition compared to adjacent intercanopy spaces due to different levels of resource availabilities. Mistletoes further augment nutrients underneath tree canopies whilst reducing t
Externí odkaz:
https://doaj.org/article/64401736480d43f88d304c700102bb09
Autor:
Kelsey L. Glennon, Joseph White, Chevonne Reynolds, Ida Risenga, Neville Pillay, Sally Archibald, Kevin Balkwill, Marcus Byrne, Glynis Cron, Hanlie Engelbrecht, Jolene Fisher, David Furniss, Kim Madikiza, Mapula Matimolane, Francesca Parrini, Martie Sanders, Robert Scholes, Sivu Situngu, Stuart Sym, Wayne Twine, Isabel Weiersbye, Vivienne Williams, Ed T.F. Witkowski, Darragh Woodford
Publikováno v:
South African Journal of Science (2020)
This Commentary is a response to a Commentary published in the May/June 2020 issue: Nattrass N. Why are black South African students less likely to consider studying biological sciences? S Afr J Sci. 2020;116(5/6), Art. #7864, 2 pages. https://doi
Externí odkaz:
https://doaj.org/article/188b9280ac5d4a55874bbc3fe7200298
Autor:
Cathy M. Dzerefos, Ed T.F. Witkowski
Publikováno v:
Koedoe: African Protected Area Conservation and Science, Vol 58, Iss 1, Pp e1-e11 (2016)
The implementation gap between science, policy and practice has led to loss of biodiversity and ecosystem services throughout Africa and is described in a case study from Limpopo Province, South Africa. In 2006, the South African National Biodiversit
Externí odkaz:
https://doaj.org/article/3e637d079995473eb31bf0331e041a37
Publikováno v:
South African Journal of Science, Vol 111, Iss 9/10, Pp 9-9 (2015)
Land-cover change and habitat loss are widely recognised as the major drivers of biodiversity loss in the world. Land-cover maps derived from satellite imagery provide useful tools for monitoring land-use and land-cover change. KwaZulu-Natal, a popul
Externí odkaz:
https://doaj.org/article/a61d4907fca742dbbfe96f6601e4da87
Publikováno v:
South African Journal of Botany. 144:284-294
Aloe reitzii var. reitzii is a summer-flowering (February–March) succulent, endemic to a restricted range within the heavily transformed grasslands of eastern South Africa. Floral structure and nectar properties suggest bird-pollination. This study
Publikováno v:
South African Journal of Botany. 144:229-237
Parthenium hysterophorus L. (Asteraceae) is a noxious, annual invasive herb prevalent in more than 50 countries worldwide. In South Africa, the weed is a highly damaging invasive species, particularly in savanna regions, threatening food security, na
Publikováno v:
African Zoology. 56:146-156
Floral nectar is an important attractant and reward for visitors, and is often produced in synchrony with peak activity of pollinators. Aloe peglerae flowers in winter, and previous studies have shown that it is pollinated primarily by diurnal genera