globalchange  > 气候变化事实与影响
DOI: 10.1016/j.scitotenv.2018.12.253
WOS记录号: WOS:000456175700088
论文题名:
Evaluating anthropogenic impacts on naturally stressed ecosystems: Revisiting river classifications and biomonitoring metrics along salinity gradients
作者: Gutierrez-Canovas, Cayetano1; Arribas, Paula2; Naselli-Flores, Luigi3; Bennas, Nard4; Finocchiaro, Marta5; Millan, Andres6; Velasco, Josefa6
通讯作者: Gutierrez-Canovas, Cayetano
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
ISSN: 0048-9697
EISSN: 1879-1026
出版年: 2019
卷: 658, 页码:912-921
语种: 英语
英文关键词: Abiotic stress ; Macroinvcrtebrates ; Biomonitonng ; Global change ; Saline rivers ; Water framework directive
WOS关键词: MACROINVERTEBRATE ASSEMBLAGES ; ECOLOGICAL STATUS ; BETA DIVERSITY ; QUALITY ; STREAMS ; BIOASSESSMENT ; BIODIVERSITY ; CONCORDANCE ; ADAPTATION ; CATCHMENT
WOS学科分类: Environmental Sciences
WOS研究方向: Environmental Sciences & Ecology
英文摘要:

Naturally stressed ecosystems hold a unique fraction of biodiversity. However, they have been largely ignored in biomonitoring and conservation programmes, such as the EU Water Framework Directive, while global change pressures are threatening their singular values. Here we present a framework to classify and evaluate the ecological quality of naturally stressed rivers along a water salinity gradient. We gathered datasets, including aquatic macroinvertebrate assemblages and environmental information, for 243 river locations across the western Mediterranean to: a) gauge the role of natural stressors (salinity) in driving aquatic community richness and composition; b) make river classifications by encompassing the wide range of environmental and biological variation exhibited by Mediterranean rivers; c) provide effective biomonitoring metrics of ecological quality for saline rivers. Our results showed that water salinity played a pivotal role in explaining the community richness and compositional changes in rivers, even when considering other key and commonly used descriptors, such as elevation, climate or lithology. Both environmental and biologically-based classifications included seven river types: three types of freshwater perennial rivers, one freshwater 'intermittent river type and three new saline river types. These new saline types were not included in previous classifications. Their validation by independent datasets showed that the saline and freshwater river types represented differentiable macroinvertebrate assemblages at family and species levels. Biomonitoring metrics based on the abundance of indicator taxa of each saline river type provided a much better assessment of the ecological quality of saline rivers than other widely used biological metrics and indices. Here we demonstrate that considering natural stressors, such as water salinity, is essential to design effective and accurate biomonitoring programmes for rivers and to preserve their unique biodiversity. (C) 2018 Elsevier B.V. All rights reserved.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/132341
Appears in Collections:气候变化事实与影响

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作者单位: 1.Univ Barcelona, Grp Recerca Freshwater Ecol Hydrol & Management F, Dept Biol Evolutiva Ecol & Ciencies Ambientals, Fac Biol,Inst Recerca Biodiversitat IRBio, E-08028 Barcelona, Catalonia, Spain
2.CSIC, Grp Ecol & Evoluc Islas, IPNA, Ave Astrofis Francisco Sanchez 3, Santa Cruz De Tenerife, Spain
3.Univ Palermo, Dipartimento Sci & Tecnol Biol Chim & Farmaceut S, Sez Bot & Ecol Vegetale, Palermo, Italy
4.Univ Abdelmalek Essaadi, Lab Ecol Biodiversite & Environm, Dept Biol, Tetouan, Morocco
5.Agenzia Reg Protez Ambiente, Sicily, Italy
6.Univ Murcia, Dept Ecol & Hidrol, Murcia, Spain

Recommended Citation:
Gutierrez-Canovas, Cayetano,Arribas, Paula,Naselli-Flores, Luigi,et al. Evaluating anthropogenic impacts on naturally stressed ecosystems: Revisiting river classifications and biomonitoring metrics along salinity gradients[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019-01-01,658:912-921
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