Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.sajb.2015.06.002 |
Photographic evidence of fire-induced shifts from dwarf-shrub- to grass-dominated vegetation in Nama-Karoo | |
du Toit, Justin Christopher Okes1; O’Connor, Timothy G.2; Van den Berg, Loraine1 | |
通讯作者 | du Toit, Justin Christopher Okes |
来源期刊 | SOUTH AFRICAN JOURNAL OF BOTANY
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ISSN | 0254-6299 |
EISSN | 1727-9321 |
出版年 | 2015 |
卷号 | 101页码:148-152 |
英文摘要 | The Nama-Karoo is a semi-arid inland biome in South Africa dominated by dwarf shrubs with grasses, shrubs, geophytes and herbs at varying levels of abundance. The position of the Nama-Karoo/grassland boundary is determined in part by rainfall amount, and in recent years there has been an increase in grassiness, correlated with good rains. This has allowed wildfires, an unusual occurrence, to burn at several sites in the central and eastern regions of the biome. The general effect of fire has been to convert dwarf shrublands to grassland with the extirpation of several nonsprouters species. A collection of photographs describes this effect. It is anticipated that these nonsprouters will recolonise by seed overtime, but could be eliminated if fire frequency is high enough to eliminate their seedbank. It is predicted that if grassy conditions persist in the Nama-Karoo, then fire will be an important factor that shapes the Nama-Karoo/grassland boundary. (C) 2015 SAAB. Published by Elsevier B.V. All rights reserved. |
英文关键词 | Resprouters Nonsprouters Biome shift Biome boundary South Africa |
类型 | Article |
语种 | 英语 |
国家 | South Africa |
收录类别 | SCI-E |
WOS记录号 | WOS:000366616400019 |
WOS关键词 | SOUTH-AFRICA ; EASTERN KAROO |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/190526 |
作者单位 | 1.Pasture Res, Grootfontein Agr Dev Inst, ZA-5900 Middelburg, Eastern Cape, South Africa; 2.SAEON, Pietermaritzbutg, South Africa |
推荐引用方式 GB/T 7714 | du Toit, Justin Christopher Okes,O’Connor, Timothy G.,Van den Berg, Loraine. Photographic evidence of fire-induced shifts from dwarf-shrub- to grass-dominated vegetation in Nama-Karoo[J],2015,101:148-152. |
APA | du Toit, Justin Christopher Okes,O’Connor, Timothy G.,&Van den Berg, Loraine.(2015).Photographic evidence of fire-induced shifts from dwarf-shrub- to grass-dominated vegetation in Nama-Karoo.SOUTH AFRICAN JOURNAL OF BOTANY,101,148-152. |
MLA | du Toit, Justin Christopher Okes,et al."Photographic evidence of fire-induced shifts from dwarf-shrub- to grass-dominated vegetation in Nama-Karoo".SOUTH AFRICAN JOURNAL OF BOTANY 101(2015):148-152. |
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