Arid
DOI10.1007/s11258-014-0357-4
Wetland plant growth under contrasting water regimes associated with river regulation and drought: implications for environmental water management
Vivian, Lyndsey M.1; Godfree, Robert C.1; Colloff, Matthew J.2; Mayence, C. Ellery1,3; Marshall, David J.1
通讯作者Vivian, Lyndsey M.
来源期刊PLANT ECOLOGY
ISSN1385-0237
EISSN1573-5052
出版年2014
卷号215期号:9页码:997-1011
英文摘要

An important characteristic of many wetland plants in semi-arid regions is their capacity to withstand fluctuations between extended dry phases and floods. However, anthropogenic river regulation can reduce natural flow variability in riverine wetlands, causing a decline in the frequency and duration of deep flooding as well as extended droughts, and an increase in shallow flooding and soil saturation. Our aim in this paper was to use an experimental approach to examine whether reductions in flooding and drought disadvantage species adapted to both these extremes, and favours those with water requirements that match the new regime of frequent low-level flooding. We compared the growth characteristics and biomass allocation of three native Australian aquatic macrophytes (Pseudoraphis spinescens, Juncus ingens and Typha domingensis), which co-occur at Barmah Forest, south-eastern Australia, under three water treatments: drought, soil saturation and deep flooding. The responses of species to the treatments largely reflected changes in their relative abundance at Barmah Forest since river regulation. Typha domingensis, which has remained uncommon, performed relatively poorly in all treatments, while J. ingens, which has increased its range, exhibited more vigorous growth under soil saturation. Pseudoraphis spinescens, which was once widespread but has declined markedly in its distribution, grew strongly under all water treatments. These findings suggest that a return to more natural, variable river flow regimes can potentially be an important conservation and restoration strategy in ecosystems characterised by species that have adaptations to extreme hydrological growing conditions.


英文关键词Floodplains Pseudoraphis spinescens Typha domingensis Juncus ingens Flood regimes Experimental ecology Barmah Forest
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000342073000006
WOS关键词FLOW REGIMES ; PHENOTYPIC PLASTICITY ; FLOODPLAIN ECOSYSTEMS ; PHRAGMITES-AUSTRALIS ; LEVEL FLUCTUATIONS ; CLIMATE-CHANGE ; MURRAY ; VEGETATION ; CONSEQUENCES ; RESTORATION
WOS类目Plant Sciences ; Ecology ; Forestry
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology ; Forestry
来源机构Commonwealth Scientific and Industrial Research Organisation
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/184276
作者单位1.CSIRO Plant Ind, Canberra, ACT 2601, Australia;
2.CSIRO Ecosyst Sci, Canberra, ACT 2601, Australia;
3.Bot Gardens & Pk Author, Kings Pk & Bot Garden, Perth, WA 6005, Australia
推荐引用方式
GB/T 7714
Vivian, Lyndsey M.,Godfree, Robert C.,Colloff, Matthew J.,et al. Wetland plant growth under contrasting water regimes associated with river regulation and drought: implications for environmental water management[J]. Commonwealth Scientific and Industrial Research Organisation,2014,215(9):997-1011.
APA Vivian, Lyndsey M.,Godfree, Robert C.,Colloff, Matthew J.,Mayence, C. Ellery,&Marshall, David J..(2014).Wetland plant growth under contrasting water regimes associated with river regulation and drought: implications for environmental water management.PLANT ECOLOGY,215(9),997-1011.
MLA Vivian, Lyndsey M.,et al."Wetland plant growth under contrasting water regimes associated with river regulation and drought: implications for environmental water management".PLANT ECOLOGY 215.9(2014):997-1011.
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