Browsing by Author "Altwegg, Res"
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- ItemAddition of nitrogen increases variability of vegetation cover in an arid system with unpredictable rainfall(2019-05-01) Milton, Suzanne J.; Altwegg, Res; Joseph, Grant S.; Dean, W. Richard J.
- ItemAllometric relationships shape foreleg evolution of long-legged oil bees (Melittidae: Rediviva)(2020-12-14) Altwegg, Res; Colville, Jonathan F.
- ItemBird monitoring in Africa: present state and future prospects(2026-03-03) Atkinson, Philip W; Diop, Ngoné; Robinson, Robert A; Altwegg, Res; Amar, Arjun; Barber, Ian; Botha, Andre J.; Buchanan, Graeme; Byaruhanga, Achilles; Chaskda, Adams; Cherkaoui, Imad; Cordeiro, Norbert J.; Coulthard, Nonie; Cross, Colin; Dami, Laura; Deacon, Neil; Rau, Pierre Defos du; Dereliev, Sergey; Deschamps, Clémence; Dodman, Tim; Gacheru, Paul; Gatarabirwa, Wenceslas; Gregory, Richard; Heptinstall, Danny; Ivande, Samuel T.; Job, Nancy; Jones, Gwawr; Lee, Alan T. K.; Middleton, Angus; Mkongewa, Victor; Ndang’ang’a, P. Kariuki; Ogada, Darcy; Orsman, Chris; Ottosson, Ulf; Pierini, Julia; Portier, Bruno G.; Rainey, Hugo; Retief, Ernst; van Roomen, Marc; Ryan, Peter; Scott, Sarah; Tende, Talatu; Thomson, Robert; Williart, Mpho; Woodcock, Paul; Wotton, Simon R.; Robinson, Paul
- ItemBIRDIE: A data pipeline to inform wetland and waterbird conservation at multiple scales.(2023-03-10) Altwegg, Res; Strobbe, Francis; Visser, Vernon; Brooks, Michael; Stojanov, Yvan; Harebottle, Douglas
- ItemDrivers of Bird Species Richness within Moist High-Altitude Grasslands in Eastern South Africa(2016-12) Smit-Robinson, Hanneline; Underhill, Les G.; Altwegg, Res
- ItemDrowning in data, thirsty for information and starved for understanding: A biodiversity information hub for cooperative environmental monitoring in South Africa(2022-09-11) MacFadyen, Sandra; Allsopp, Nicky; Altwegg, Res; Archibald, Sally; Botha, Judith; Bradshaw, Karen; Carruthers, Jane; De Klerk, Helen; de Vos, Alta; Distiller, Greg; Foord, Stefan; Freitag-Ronaldson, Stefanie; Gibbs, Richard; Hamer, Michelle; Landi, Pietro; MacFadyen, Duncan; Midgley, Guy; Moncrieff, Glenn; Munch, Zahn; Mutanga, Onisimo; Sershen; Nenguda, Rendani; Ngwenya, Mzabalazo; Parker, Daniel; Peel, Mike; Power, John; Pretorius, Joachim; Ramdhani, Syd; Robertson, Mark; Rushworth, Ian; Slingsby, Jasper; Turner, Andrew; Visser, Vernon; Van Wageningen, Gerhard; Hui, Cang
- ItemDynamic multi-species occupancy models reveal individualistic habitat preferences in a high-altitude grassland bird community(2019-02-15) Smit-Robinson, Hanneline; Altwegg, Res
- ItemEarly warning systems for biodiversity in southern Africa – How much can citizen science mitigate imperfect data?(2016-09-26) Altwegg, Res; Underhill, Les G
- ItemExplaining patterns of avian diversity and endemicity: climate and biomes of southern Africa over the last 140,000 years(2016-06) Huntley, Brian; Collingham, Yvonne C.; Singarayer, Joy S.; Valdes, Paul J.; Midgley, Guy F.; Altwegg, Res; Ohlemüller, Ralf
- ItemExtreme climate-induced life-history plasticity in an amphibian(2018-01-10) Measey, G. John; Altwegg, Res
- ItemFinding rare species and estimating the probability that all occupied sites have been found(2022-03-01) Slingsby, Jasper A.; Measey, John; Altwegg, Res
- ItemFine-scale drivers of extinction risk: tadpole occupancy dynamics of the Table Mountain Ghost Frog (Heleophryne rosei)(2023-12-12) Altwegg, Res; Tarrant, Jeanne
- ItemImperfect detection distorts depth-related trends in marine macrofaunal species richness(2018-10-01) Karenyi, Natasha; Nel, Ronel; Clark, Alan; Altwegg, Res
- ItemIncorporating species detectability into conservation targets based on the species–area relationship(2016-12) Nel, Ronel; Altwegg, Res
- ItemIUCN Red List of Ecosystems(2018-06-21) Slingsby, Jasper; Altwegg, ResIn South Africa, ecosystems listed as either Critically Endangered or Endangered are prioritised for conservation efforts which are intended to reduce the rate of ecosystem collapse and species extinction. Previous assessments were based on a nationally accepted and scientifically rigorous framework, but the IUCN have recently published a new assessment framework that has subtle differences to the existing South African system. There is pressure for South Africa to comply with the international standards such that the national assessment can be comparable with other assessments across the globe. The technical methods of the IUCN and South African Red List of Ecosystems (RLE) were tested on South African terrestrial ecosystems focusing on two criteria that assess spatial aspects and one focusing on functional aspects of ecosystem decline. Comparatively, there are differences in the number of threatened ecosystems identified by both technical methods which are mostly owed to (i) the proposed IUCN RLE technical method for subcriterion B1 (extent of occurrence) and (ii) sub-criterion A2b which identifies ecosystems that are likely to be at risk in the near future. Despite these differences, there are immense benefits for complying with the international standards. These include (i) the assessment being repeatable, (ii) consistent application and comparison across all realms, (iii) contribution towards the establishment of the global list of ecosystems at risk of collapse and (iv) eligibility for international funding on biodiversity conservation and research.
- ItemManagement factors affecting densities of common grasslands birds of high elevation grasslands of eastern South Africa: Ingula as a case study(2017-03-15) Smit-Robinson, Hanneline; Underhill, Les G; Altwegg, Res
- ItemPlant richness, turnover, and evolutionary diversity track gradients of stability and ecological opportunity in a megadiversity center(2020-08-05) Beale, Colin M.; Forest, Félix; Altwegg, Res; Huntley, Brian; Cowling, Richard M.
- ItemTowards Adaptive Management of High-altitude Grasslands: Ingula as a Case Study(2015-02) Maphisa, David H.