Arid
DOI10.1016/j.pce.2016.11.003
Seasonal variation in pans in relation to limno-chemistry, size, hydroperiod, and river connectivity in a semi-arid subtropical region
Nhiwatiwa, Tamuka1,2; Dalu, Tatenda3,4
通讯作者Dalu, Tatenda
来源期刊PHYSICS AND CHEMISTRY OF THE EARTH
ISSN1474-7065
EISSN1873-5193
出版年2017
卷号97页码:37-45
英文摘要

Seasonal pans are hydrologically dynamic, with significant changes in water volume and depth in response to high evaporation, infiltration rates and inundation events. Intra-seasonal and inter-seasonal changes in endorheic and floodplain pans in relation to limnology, size, hydroperiod, and river connectivity were studied over two rainfall seasons across 36 pans at the Save Valley Conservancy. In the study region, floodplain pans were identified as pans that had connectivity with the Save River, while the endorheic pans (large and small) were hydrologically isolated basins. Seasonal trends for physicochemical variables were initial low and gradual increased for both rainfall seasons. Significant interseasonal differences for several physico-chemical variables were observed. No significant differences in physico-chemical variables were observed between large and small endorheic pans, with the except for vegetation cover, which was higher in large pans. Floodplain pans differed from the endorheic systems in pH, conductivity, nutrients and suspended solids. Connectivity was found to be insignificant, as connections between these systems were probably too infrequent. Seasonal pans were uniquely distinguished by their morphometric, physico-chemical and hydrological characteristics. Inevitably, they are vulnerable to climate change with the extent of their resilience currently unknown. (C) 2016 Elsevier Ltd. All rights reserved.


英文关键词Endorheic Connectivity Hydroperiod Seasonal pans Temporal systems Water quality
类型Article
语种英语
国家Zimbabwe ; South Africa
收录类别SCI-E
WOS记录号WOS:000397131200006
WOS关键词INVERTEBRATE COMMUNITIES ; CHEMICAL CHARACTERISTICS ; AQUATIC VEGETATION ; TEMPORARY ; ECOLOGY ; PONDS ; SEDIMENT ; BRANCHIOPODS ; MPUMALANGA ; CATCHMENT
WOS类目Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS研究方向Geology ; Meteorology & Atmospheric Sciences ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201456
作者单位1.Univ Zimbabwe, Biol Sci, POB MP 167, Mt Pleasant, MI, Zimbabwe;
2.Univ Lake Kariba Res Stn, POB 48, Kariba, Zimbabwe;
3.Rhodes Univ, Zool & Entomol, POB 94, ZA-6140 Grahamstown, South Africa;
4.South African Inst Aquat Biodivers, P Bag 1015, ZA-6140 Grahamstown, South Africa
推荐引用方式
GB/T 7714
Nhiwatiwa, Tamuka,Dalu, Tatenda. Seasonal variation in pans in relation to limno-chemistry, size, hydroperiod, and river connectivity in a semi-arid subtropical region[J],2017,97:37-45.
APA Nhiwatiwa, Tamuka,&Dalu, Tatenda.(2017).Seasonal variation in pans in relation to limno-chemistry, size, hydroperiod, and river connectivity in a semi-arid subtropical region.PHYSICS AND CHEMISTRY OF THE EARTH,97,37-45.
MLA Nhiwatiwa, Tamuka,et al."Seasonal variation in pans in relation to limno-chemistry, size, hydroperiod, and river connectivity in a semi-arid subtropical region".PHYSICS AND CHEMISTRY OF THE EARTH 97(2017):37-45.
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