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DOI | 10.2989/10220119.2019.1568302 |
Inselbergs persist as islands of diversity in a heavily grazed rangeland mosaic at the nexus of three arid biomes | |
Pier, Laetitia C.1; Samuels, M. Lgshaan1,2; Masubelele, Mmoto L.3; Khomo, Lesego4 | |
发表日期 | 2019 |
ISSN | 1022-0119 |
EISSN | 1727-9380 |
卷号 | 36期号:2页码:125-128 |
英文摘要 | Inselbergs are regarded as 'islands of diversity' due to the high number of plant species present and level of endemism. They also act as natural sources of fodder for livestock and thus risk becoming homogenised in a heavily grazed rangeland. The aim of this study was to compare plant diversity on inselbergs and matrices in heavily grazed sections of three arid biomes of South Africa's west. The inselbergs are scattered in a matrix of rangeland vegetation in the Desert, Nama-Karoo and Succulent Karoo biomes where pastoral herding is the main land use. Plant composition, cover and growth forms were quantified in plots and along transects in 21 inselberg and matrix sites. Inselbergs had more diverse plant and growth forms and greater cover than adjacent matrices. Defoliated plants on inselbergs are able to recover due to more mesic conditions and because inselbergs are largely grazed during drier periods, species are able to flower and set seed during winter. Inselbergs are also less accessible to livestock due to their unique geomorphology. Therefore, inselbergs are able to persist as islands of diversity and warrant inclusion into conservation and rangeland farming management plans since climate change will result in biome boundary shifts. |
WOS研究方向 | Environmental Sciences & Ecology |
来源期刊 | AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/97861 |
作者单位 | 1.Univ Western Cape, Dept Biodivers & Conservat Biol, Bellville, South Africa; 2.Univ Western Cape, Agr Res Council Anim Prod, Bellville, South Africa; 3.Cape Res Ctr, South African Natl Pk, Cape Town, South Africa; 4.Univ South Africa, Environm Sci Dept, Johannesburg, South Africa |
推荐引用方式 GB/T 7714 | Pier, Laetitia C.,Samuels, M. Lgshaan,Masubelele, Mmoto L.,et al. Inselbergs persist as islands of diversity in a heavily grazed rangeland mosaic at the nexus of three arid biomes[J],2019,36(2):125-128. |
APA | Pier, Laetitia C.,Samuels, M. Lgshaan,Masubelele, Mmoto L.,&Khomo, Lesego.(2019).Inselbergs persist as islands of diversity in a heavily grazed rangeland mosaic at the nexus of three arid biomes.AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE,36(2),125-128. |
MLA | Pier, Laetitia C.,et al."Inselbergs persist as islands of diversity in a heavily grazed rangeland mosaic at the nexus of three arid biomes".AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE 36.2(2019):125-128. |
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