DOI: 10.1016/j.scitotenv.2020.137361
论文题名: Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera
作者: Sousa R. ; Ferreira A. ; Carvalho F. ; Lopes-Lima M. ; Varandas S. ; Teixeira A. ; Gallardo B.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 719 语种: 英语
英文关键词: Conservation
; Dams
; Freshwater mussels
; Habitat loss and fragmentation
; Reservoirs
; Unionids
Scopus关键词: Conservation
; Dams
; Dissolved oxygen
; Ecosystems
; Gems
; Hydroelectric power
; Hydroelectric power plants
; Molluscs
; Petroleum reservoirs
; Reservoir management
; Reservoirs (water)
; Suspended sediments
; Water
; Abundance and size structures
; Freshwater mussels
; Habitat loss
; Management measures
; Portuguese rivers
; Sediment characteristic
; Small hydro-power plants
; Unionids
; Rivers
; dissolved oxygen
; organic matter
; water
; bivalve
; conservation management
; dam
; habitat fragmentation
; habitat loss
; hydroelectric power plant
; reservoir characterization
; species conservation
; Article
; dam (barrier)
; electric power plant
; environmental factor
; environmental impact
; hydropower
; juvenile
; Margaritifera margaritifera
; mussel
; nonhuman
; population abundance
; priority journal
; river
; sediment
; suspended particulate matter
; Margaritifera margaritifera
; Unionidae
英文摘要: Freshwater mussels are undergoing rapid global declines due to habitat loss and fragmentation, among other factors, but little is known about the effects of small hydropower plants. Here we assessed the impact of small hydropower plants on the abundance and size structure of the imperilled pearl mussel Margaritifera margaritifera. For this, we sampled 66 sites in three Portuguese rivers (Mente, Rabaçal and Tuela) located upstream and downstream of dams and within the reservoirs. Pearl mussels were significantly more abundant upstream than downstream of dams (97.4% more) or within reservoirs (98.5% more). In addition, juveniles were mostly found upstream of dams. The most significant environmental alterations that explained the observed patterns were related to changes in sediment characteristics (accumulation of fine sediments and organic matter in reservoirs) and water chemistry, most notably suspended solids (highest values in reservoirs) and dissolved oxygen (lowest values in reservoirs). Overall, results show that small hydropower plants can deeply affect pearl mussel populations: specimens almost disappeared from the areas within the reservoirs and sites located downstream only retained adults without signs of recent recruitment. Future management measures devoted to the conservation of pearl mussels should take into account the results reported here to avoid the construction of new dams in pearl mussel rivers; improve management of the river flow in downstream areas; and consider the decommissioning of dams in pearl mussel rivers with a particular attention devoted to the re-naturalization of river sections under the influence of the reservoir and downstream areas. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158165
Appears in Collections: 气候变化与战略
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作者单位: CBMA - Centre of Molecular and Environmental Biology, Department of Biology, University of Minho, Campus Gualtar, Braga, 4710-057, Portugal; CIBIO/InBIO - Research Center in Biodiversity and Genetic Resources, University of Porto, Campus Agrário de Vairão, Vairão, Portugal; CITAB-UTAD - Centre for Research and Technology of Agro-Environment and Biological Sciences, University of Trás-os-Montes and Alto Douro, Forestry Department, Vila Real, Portugal; Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, 5300-253, Portugal; IPE-CSIC Pyrenean Institute of Ecology, Department of Biodiversity Conservation, Avda. Montañana 1005, Zaragoza, 50059, Spain; BioRISC Biosecurity Research Initiative at St Catharine's, St Catharine's College, Cambridge, CB2 1RL, United Kingdom
Recommended Citation:
Sousa R.,Ferreira A.,Carvalho F.,et al. Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera[J]. Science of the Total Environment,2020-01-01,719