Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Debbie Jewitt"'
Publikováno v:
Drone Systems and Applications, Vol 12, Iss , Pp 1-7 (2024)
Monitored populations of the Nile crocodile Crocodylus niloticus at the southern end of its distribution, in the KwaZulu-Natal province of South Africa, are largely in decline. Trophy hunting of wild Nile crocodiles is only permitted at Pongolapoort
Externí odkaz:
https://doaj.org/article/73a35ceb2df447f5be94a881ccf64d4e
Publikováno v:
South African Journal of Science, Vol 119, Iss 7/8 (2023)
Rural landscapes in South Africa experience high conversion rates due to intense land use; however, the changes are site specific and depend on the socio-economic and political history of the area. Land cover change (LCC) was assessed in response to
Externí odkaz:
https://doaj.org/article/02df7882633749a4a288b92c09b64c54
Publikováno v:
South African Journal of Science, Vol 117, Iss 1/2 (2021)
The loss of natural habitat resulting from human activities is the principal driver of biodiversity loss in terrestrial ecosystems globally. Metrics of habitat loss are monitored at national and global scales using various remote sensing based land-c
Externí odkaz:
https://doaj.org/article/b7a2e17c4ee549c89470da64f836a0f0
Autor:
Debbie Jewitt
Publikováno v:
Bothalia: African Biodiversity & Conservation, Vol 48, Iss 1, Pp e1-e10 (2018)
Background: Systematic conservation planning aims to ensure representivity and persistence of biodiversity. Quantitative targets set to meet these aims provide a yardstick with which to measure the current conservation status of biodiversity features
Externí odkaz:
https://doaj.org/article/84b44c493ed3421d81a33d12993d74f1
Autor:
Konrad J. Wessels, Frans van den Bergh, David P. Roy, Brian P. Salmon, Karen C. Steenkamp, Bryan MacAlister, Derick Swanepoel, Debbie Jewitt
Publikováno v:
Remote Sensing, Vol 8, Iss 11, p 888 (2016)
The paper evaluated the Landsat Automated Land Cover Update Mapping (LALCUM) system designed to rapidly update a land cover map to a desired nominal year using a pre-existing reference land cover map. The system uses the Iteratively Reweighted Multiv
Externí odkaz:
https://doaj.org/article/11c11abef8454fe4bf07e11e1be67f8b
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
Autor:
Kyran Kunkel, Timothy G. O’Connor, Ntebohiseng Sekhele, Debbie Jewitt, Kevin P. Kirkman, V. Ralph Clark
Publikováno v:
African Journal of Range & Forage Science. 38:iii-vi
(2021). Montane rangelands in a changing world. African Journal of Range & Forage Science: Vol. 38, Montane Rangelands in a Changing World, pp. iii-vi.
Autor:
S. Janse van Rensburg, J.F. Durand, L van Niekerk, Debbie Jewitt, P.L. Grundling, Laven Naidoo, Janine B. Adams, T. Riddin, H. Van Deventer, R. Grobler, Jeanne L. Nel, L. Pretorius, CF MacKay, B. Kelbe
Publikováno v:
Ecological Indicators 130 (2021)
Ecological Indicators, Vol 130, Iss, Pp 108077-(2021)
Ecological Indicators, 130
Ecological Indicators, Vol 130, Iss, Pp 108077-(2021)
Ecological Indicators, 130
Africa’s range-restricted and transitional subtropical-temperate coastal forested wetlands are facing interlinking threats of climate and anthropogenic pressures. We assessed their conservation status using the criteria of the International Union f
Publikováno v:
Biodiversity and Conservation. 25:2641-2654
Collective properties of biodiversity, such as beta diversity, are suggested as complementary measures of species richness to guide the prioritisation and selection of important biodiversity areas in regional conservation planning. We assessed variat
Autor:
Barend F.N. Erasmus, Debbie Jewitt, Timothy G. O’Connor, Peter S. Goodman, Ed T.F. Witkowski, William W. Hargrove, Damian M. Maddalena
Publikováno v:
Applied Geography. 63:33-42
Global climate change is having marked influences on species distributions, phenology and ecosystem composition and raises questions as to the effectiveness of current conservation strategies. Conservation planning has only recently begun to adequate