Fig 1.
Map of the Barents Sea, based on Loeng [19].
Red arrows indicate Atlantic water currents, blue arrows indicate Arctic water currents, and dotted line indicates approximate position of the Polar Front.
Table 1.
Overview of fish taxa assessed in this study.
Table 2.
Overview of the functional traits used to calculate functional redundancy.
Fig 2.
Procedure to calculate functional redundancy.
See main text for details.
Fig 3.
Functional dendrogram for 60 Barents Sea fish taxa, their biogeographical affiliations, and their functional groups.
Table 3.
SD = standard deviation; FR = functional redundancy; DCO = degree of co-occurrence; ML = maximum body length (cm).
Fig 4.
Functional redundancy of demersal fish in the Barents Sea in the period 2004–2012, presented by colour scale and circle size.
For each grid cell, functional redundancy was measured as the number of species present per functional group. Circle size varies between the functional groups.
Fig 5.
Proportion of the Barents Sea covered by the individual functional groups in the period 2004–2012, expressed as spatial coverage in %, for (A) Elasmobranchs, Lumpsuckers and Long demersals, and for (B) Redfish, Large demersals and Semipelagics. The numbers indicate the actual average functional redundancy for each functional group by year. Circle size indicates the degree of co-occurrence (DCO), i.e. for each functional group and each year, the actual average functional redundancy was divided by the number of taxa in that group.