Koedoe最新文献

{"title":"A preliminary investigation of exposure to rabies virus in selected wildlife in the Kruger National Park, South Africa","authors":"Leana Rossouw, C. Boshoff, C. Sabeta, J. Kotzé","doi":"10.4102/KOEDOE.V63I1.1651","DOIUrl":"https://doi.org/10.4102/KOEDOE.V63I1.1651","url":null,"abstract":"Rabies is a disease caused by members of the genus Lyssavirus in the family Rhabdoviridae. The disease is fatal to humans and other warm-blooded vertebrates, following infection, once clinical signs are apparent. Late in infection rabies virus is found in the saliva and is usually transmitted by the bite of an infected animal (Swanepoel 2004). In South Africa, two genetically distinct and epizootiological groups of rabies virus are found, namely the canid rabies biotype and mongoose rabies biotype (Mansvelt 1962; Nel et al. 1997).","PeriodicalId":48892,"journal":{"name":"Koedoe","volume":"86 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83758788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Protecting and preserving South African aeolianite surfaces from graffiti","authors":"Charles W. Helm, H. Cawthra, R. Cowling, J. D. Vynck, M. Lockley, C. Marean, M. Dixon, C. J. Helm, W. Stear, Guy H. H. Thesen, J. Venter","doi":"10.4102/KOEDOE.V63I1.1656","DOIUrl":"https://doi.org/10.4102/KOEDOE.V63I1.1656","url":null,"abstract":"","PeriodicalId":48892,"journal":{"name":"Koedoe","volume":"46 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84582284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of fire management practices in African savanna-protected areas","authors":"W. Nieman, B. V. van Wilgen, A. Leslie","doi":"10.4102/KOEDOE.V63I1.1655","DOIUrl":"https://doi.org/10.4102/KOEDOE.V63I1.1655","url":null,"abstract":"Savannas are characterised by the co-dominance of woody plants and grasses, in which trees that are at least 2 metres (m) tall occur above a grassy layer between 0.5 m and 2 m (Scholes & Walker 1993). Frequent natural fires have historically been reported in African savannas during the dry season, and have played an important role in shaping the composition and structure of these ecosystems (Bond 2019). The importance of fire in maintaining vegetation in savanna is thus well recognised (Archibald et al. 2017), especially in terms of ensuring the continued co-existence of woody and herbaceous plants (Archibald et al. 2013).","PeriodicalId":48892,"journal":{"name":"Koedoe","volume":"1 1","pages":"13"},"PeriodicalIF":1.1,"publicationDate":"2021-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79925750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Management guidelines for the conservation of heritage resources in Wakkerstroom, Mpumalanga","authors":"Reitumetse M.H. Sethaba, M. Scholes","doi":"10.4102/KOEDOE.V63I1.1647","DOIUrl":"https://doi.org/10.4102/KOEDOE.V63I1.1647","url":null,"abstract":"The term ‘heritage’ is used loosely to describe everything that is inherited or handed down to future generations from the past (Lowenthal 2005). Natural heritage resources usually refer to land, water, animals and plants. Cultural heritage resources include buildings, art, traditions and practices of cultural and historical value (Lowenthal 2005). Heritage can also be described as tangible ‘a monument, group of buildings, or site of historical, aesthetic, archaeological, scientific, ethnological or anthropological value’ (Kirshenblatt-Gimblett 2004); or intangible such as ‘all forms of traditional and popular culture such as collective works originating in a given community, and based on tradition’ including music, dance and traditional medicine (United Nations Educational, Scientific and Cultural Organisation (Civallero 2007; UNESCO 1989).","PeriodicalId":48892,"journal":{"name":"Koedoe","volume":"9 1","pages":"11"},"PeriodicalIF":1.1,"publicationDate":"2021-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85579625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the effect of tagging and the vulnerability to predation in tigerfish (Hydrocynus vittatus, Castelnau 1861) in a water-stressed system using telemetry methods","authors":"G. O’Brien","doi":"10.4102/koedoe.v62i1.1649","DOIUrl":"https://doi.org/10.4102/koedoe.v62i1.1649","url":null,"abstract":"Fish are well established around the world as indicators of ecological integrity (Harrison & Whitfield 2006; Mims & Olden 2013; Sosa-López et al. 2005). Similar to other aquatic organisms, fish species face several challenges from the environment they occur in and are subject to a plethora of stressors, both natural and anthropogenic (Du Plessis 2019; O’Brien et al. 2018). The ever-increasing anthropogenic pressures have generally led to a steady decline in aquatic organisms, including fish species (Dudgeon 2014; Rodell et al. 2018). Fish kills and population declines are often reported worldwide as a result of deteriorating aquatic ecosystems (Ferreira & Pienaar 2011; Thronson & Quigg 2008). This deterioration has been attributed to several factors, including river fragmentation, flow modification, pollution, the introduction of alien species and global climate change (De Moor 1996; Ellender & Weyl 2014; O’Brien et al. 2019). Fish make use of the available physical habitat as refugia, for feeding and spawning, and as nurseries for their offspring (Godin 1997; O’Brien et al. 2013). Maintaining these environments is essential, but they are often inaccessible and difficult to sample, making observations hard to Increase in anthropogenic pressures on freshwater ecosystems, globally and locally in South Africa, has made it difficult to meet environmental flow requirements and maintain these systems. The Letaba-Olifants catchment is one such example, where the upstream water demands place pressure on the river downstream as it flows through the Kruger National Park. We used the activity rates of Hydrocynus vittatus as a line of evidence to assess (1) the effects of telemeter tagging on their activity rates in three potential post-tagging recovery periods and (2) their vulnerability to predation and the causality related to the environmental stressors placed on the river catchment in the Olifants River Gorge, Kruger National Park, South Africa. We determined H. vittatus activity rates as locomotive movement using radio telemetry methods linked remotely to an online data management system. We telemeter tagged nine individuals from 08 May to 28 June 2018. However, only seven fish were successfully tracked for the duration of our study, and two individuals moved out of range of the remote network shortly after release and could not be located. The tagged H. vittatus individuals were found to have reduced activity at least within the first 7 days after tagging compared with the time after that. The results showed that three individuals were preyed on by predators after the tagging procedure recovery period. This coincided with abnormal low flow conditions, where the Letaba River ran dry. African fish eagles Haliaeestus vocifer were the only confirmed predator, whilst predation by other species was also evident.","PeriodicalId":48892,"journal":{"name":"Koedoe","volume":"16 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90940957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum: Climate change and the ownership of game: A concern for fenced wildlife areas","authors":"A. Blackmore","doi":"10.4102/koedoe.v62i1.1659","DOIUrl":"https://doi.org/10.4102/koedoe.v62i1.1659","url":null,"abstract":"","PeriodicalId":48892,"journal":{"name":"Koedoe","volume":"33 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80966775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of three decades of land cover changes in the Maputaland Coastal Plain, South Africa","authors":"Manish Ramjeawon, M. Demlie, M. Toucher, S. Rensburg","doi":"10.4102/koedoe.v62i1.1642","DOIUrl":"https://doi.org/10.4102/koedoe.v62i1.1642","url":null,"abstract":"Changes in land use and land cover over time and space indicate socioeconomic change. Population growth and consequent demand for economic development have increased the conversion of natural vegetation. The KwaZulu-Natal Province has experienced an accumulated transformation of 45.6% of natural vegetation between 1994 and 2008 (Jewitt 2012:12). One area that has been affected by land cover transformation is the Maputaland Coastal Plain (MCP) located in the north-east of the KwaZulu-Natal Province of South Africa, which is rich in biodiversity and other natural resources (Orimoloye et al. 2019:3). The MCP has several wetlands, lakes and game reserves, which play an integral role in maintaining a healthy ecosystem. The largest freshwater lake in South Africa, Lake Sibayi, and the iSimangaliso Wetland Park, which is a renowned Ramsar and World Heritage site, are located within the MCP (Weitz & Demlie 2014:1). However, recent studies indicated that surface waters and wetland systems in the MCP are under severe threat because of plantations and water extraction (Everson et al. 2019:1; Orimoloye et al. 2019:9; Smithers et al. 2017:490). A large part of the Lake Sibayi catchment area is covered by plantations (Everson et al. 2019:34; Weitz & Demlie 2014:1). Mbazwana and Manzegwena, the two largest plantations, cover approximately 8500 and 15 000 ha, respectively, and were established in the 1960s by the KwaZulu Department of Forestry (SA Forestry 2012:1).","PeriodicalId":48892,"journal":{"name":"Koedoe","volume":"8 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89312773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"No-take estuarine-protected areas: The missing armour for the conservation of fishes","authors":"A. Whitfield, C. Attwood, P. Cowley, S. Lamberth, B. Mann","doi":"10.4102/koedoe.v62i1.1648","DOIUrl":"https://doi.org/10.4102/koedoe.v62i1.1648","url":null,"abstract":"","PeriodicalId":48892,"journal":{"name":"Koedoe","volume":"25 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75724445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Koedoe: Changing of the guard","authors":"L. Foxcroft","doi":"10.4102/koedoe.v62i1.1645","DOIUrl":"https://doi.org/10.4102/koedoe.v62i1.1645","url":null,"abstract":"","PeriodicalId":48892,"journal":{"name":"Koedoe","volume":"362 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76423098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential impacts of changing climate on nature-based tourism: A case study of South Africa’s national parks","authors":"Kevin M. Coldrey, J. Turpie","doi":"10.4102/koedoe.v62i1.1629","DOIUrl":"https://doi.org/10.4102/koedoe.v62i1.1629","url":null,"abstract":"Climate change has the potential to have significant impacts on the global tourism industry through changes in accessibility and comfort levels, as well as geographic or seasonal changes to attractions (Rosselló-Nadal 2014; Scott, Gössling & Hall 2012). Global and regional studies based on climate indices and data suggest that there will be global shifts in tourism, with an improvement in conditions in many temperate areas and a deterioration in conditions in many subtropical and tropical areas (Bigano, Hamilton & Tol 2007; Rosselló & Santana 2012; Tol & Walsh 2012). Indications are that tourism may decline in much of the Global South. This is of particular concern, not only because tourism is a significant source of foreign exchange earnings in developing countries (Scott et al. 2012), but also because of the global importance of biodiversity conservation in these countries and the direct and indirect reliance of conservation on nature-based tourism. However, comparatively little empirical work has been done on nature-based or protected area tourism, particularly in developing countries.","PeriodicalId":48892,"journal":{"name":"Koedoe","volume":"35 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2020-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80975759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}