干旱区生态环境知识资源中心(Arid): Ecophysiological responses of Terminalia sericea to fire history in a semi-arid woodland savanna, central Namibia

Arid

DOI	10.1016/j.sajb.2021.10.023
	Ecophysiological responses of Terminalia sericea to fire history in a semi-arid woodland savanna, central Namibia
	Daniels, Quanita Farrah; Throop, Heather L.
通讯作者	Throop, HL (corresponding author), Arizona State Univ, Tempe Campus, Tempe, AZ 85287 USA.
来源期刊	SOUTH AFRICAN JOURNAL OF BOTANY
ISSN	0254-6299
EISSN	1727-9321
出版年	2022
卷号	146 页码:205-212
英文摘要	Woody vegetation is increasing in savanna ecosystems worldwide. Fire is frequently used as a management tool to decrease bush encroachment, but knowledge regarding the underlying leaf-level ecophysiological responses to fire history is lacking. In southern Africa, Terminalia sericea is a dominant encroaching species that resprouts readily following fires. The impact of fire on leaf-level photosynthesis, transpiration, conductance and water use efficiency was investigated using infrared gas analysis. Data were collected in three areas on the Waterberg Plateau with different fire histories (fire occurring 2, 3 and 15 years prior to sampling). Leaf-level photosynthetic rates were comparable to the relatively high rates shown by other encroaching bush species. In contrast to expectations, ecophysiological variables did not differ among plants in areas with different fire histories. However, photosynthetic rates were highly sensitive to variation in light level, suggesting that canopy structural differences may affect carbon fixation and growth rates at the whole-plant level. Encroachment by T. sericea may be facilitated, at least in part, by high leaf-level photosynthetic rates that are insensitive to long-term fire history on sandy, low-nutrient soils. (c) 2021 SAAB. Published by Elsevier B.V. All rights reserved.
英文关键词	Bush encroachment Photosynthesis Regrowth Transpiration Water use efficiency
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000720454700006
WOS关键词	LEAF GAS-EXCHANGE ; SHRUB ENCROACHMENT ; BUSH ENCROACHMENT ; PRESCRIBED FIRE ; SOUTHERN AFRICA ; TREE ; GRASS ; DYNAMICS ; INVASION ; RAINFALL
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/2XILL650/374567
作者单位	[Daniels, Quanita Farrah; Throop, Heather L.] Namibia Univ Sci & Technol, Agr & Nat Resource Sci, Windhoek, Namibia; [Daniels, Quanita Farrah] Natl Bot Res Inst, Windhoek, Namibia; [Throop, Heather L.] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA; [Throop, Heather L.] Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA
推荐引用方式 GB/T 7714	Daniels, Quanita Farrah,Throop, Heather L.. Ecophysiological responses of Terminalia sericea to fire history in a semi-arid woodland savanna, central Namibia[J],2022,146:205-212.
APA	Daniels, Quanita Farrah,&Throop, Heather L..(2022).Ecophysiological responses of Terminalia sericea to fire history in a semi-arid woodland savanna, central Namibia.SOUTH AFRICAN JOURNAL OF BOTANY,146,205-212.
MLA	Daniels, Quanita Farrah,et al."Ecophysiological responses of Terminalia sericea to fire history in a semi-arid woodland savanna, central Namibia".SOUTH AFRICAN JOURNAL OF BOTANY 146(2022):205-212.