DOI: 10.1111/gcb.12972
论文题名: A global viability assessment of the European eel
作者: Bevacqua D. ; Melià P. ; Gatto M. ; De Leo G.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 9 起始页码: 3323
结束页码: 3335
语种: 英语
英文关键词: Conservation
; European eel
; Geographic variation of vital rates
; Habitat loss
; Metapopulations
; Population viability
; Reproductive success
; Sustainable fisheries management
Scopus关键词: eel
; endangered species
; geographical variation
; global perspective
; habitat loss
; life cycle analysis
; metapopulation
; mortality
; nature conservation
; recruitment (population dynamics)
; Europe
; Anguilla anguilla
; Anguilla
; animal
; Atlantic Ocean
; biological model
; ecosystem
; environmental protection
; Europe
; fishery
; physiology
; population dynamics
; Anguilla
; Animals
; Atlantic Ocean
; Conservation of Natural Resources
; Ecosystem
; Europe
; Fisheries
; Models, Biological
; Population Dynamics
英文摘要: The global European eel (Anguilla anguilla) stock is critically endangered according to the IUCN, and the European Commission has urged the development of conservation plans aimed to ensure its viability. However, the complex life cycle of this panmictic species, which reproduces in the open ocean but spends most of its prereproductive life in continental waters (thus embracing a huge geographic range and a variety of habitat types), makes it difficult to assess the long-term effectiveness of conservation measures. The interplay between local and global stressors raises intriguing cross-scale conservation challenges that require a comprehensive modelling approach to be addressed. We developed a full life cycle model of the global European eel stock, encompassing both the oceanic and the continental phases of eel's life, and explicitly allowing for spatial heterogeneity in vital rates, availability of suitable habitat and settlement potential via a metapopulation approach. We calibrated the model against a long-term time series of global European eel catches and used it to hindcast the dynamics of the stock in the past and project it over the 21st century under different management scenarios. Although our analysis relies on a number of inevitable simplifying assumptions and on data that may not embrace the whole range of variation in population dynamics at the small spatiotemporal scale, our hindcast is consistent with the general pattern of decline of the stock over recent decades. The results of our projections suggest that (i) habitat loss played a major role in the European eel decline; (ii) the viability of the global stock is at risk if appropriate protection measures are not implemented; (iii) the recovery of spawner escapement requires that fishing mortality is significantly reduced; and (iv) the recovery of recruitment might not be feasible if reproductive output is not enhanced. © 2015 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61725
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Dipartimento di Bioscienze, Università degli Studi di Parma, viale Usberti 11/A, Parma, Italy; INRA, UR1115 PSH, Avignon, France; Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, via Ponzio 34/5, Milano, Italy; Consorzio Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, Roma, Italy; Hopkins Marine Station, Stanford University, 120 Oceanview blvd, Pacific Grove, CA, United States
Recommended Citation:
Bevacqua D.,Melià P.,Gatto M.,et al. A global viability assessment of the European eel[J]. Global Change Biology,2015-01-01,21(9)