Arid
DOI10.1016/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
ISSN0254-6299
EISSN1727-9321
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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