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    Groundfish and invertebrate community shift in coastal areas off Iceland

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    Type
    Article
    Authors
    Jónsdóttir, Ingibjörg G.
    Bakka, Haakon
    Elvarsson, Bjarki T.
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Date
    2019-01-30
    Online Publication Date
    2019-01-30
    Print Publication Date
    2019-04
    Permanent link to this record
    http://hdl.handle.net/10754/631671
    
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    Abstract
    Biodiversity is a key concept for conservation and management and is fundamental for ecosystem-based approaches. It is of importance to consider whole areas in which communities and their ecological processes can be maintained. To effectively manage ecosystems for sustainable use and conservation, it is important to understand changes in the ecosystems. The objective of this study was to investigate the species diversity of groundfish and invertebrates, including both commercially exploited species as well as unexploited species, and identify long-term changes in the composition and abundance of the groundfish community and the northern shrimp (Pandalus borealis) in six fjords off Iceland in the period from 1995 to 2016 using data from annual shrimp survey. The results showed a strong indication of species replacement during the study period and a top-down control, where the abundance of cod and haddock increased at the same time as the abundance of northern shrimp, eelpouts, blennies and flatfish species decreased. Moreover, the increase in gadoid abundance seemed to have less effect in more open systems, which showed greater variability in species diversity and evenness compared with more closed ecosystems.
    Citation
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    Sponsors
    We would like to thank the captains and crews of the vessels used for sampling and all the researchers working aboard for sampling. Furthermore, we thank Pamela Woods for valuable comments to an earlier draft of the manuscript.
    Publisher
    Elsevier BV
    Journal
    Estuarine, Coastal and Shelf Science
    DOI
    10.1016/j.ecss.2019.01.022
    Additional Links
    https://www.sciencedirect.com/science/article/pii/S0272771418308424
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.ecss.2019.01.022
    Scopus Count
    Collections
    Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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