Diet of seals in the Baltic Sea region: a synthesis of published and new data from 1968 to 2013
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
Diet of seals in the Baltic Sea region : a synthesis of published and new data from 1968 to 2013. / Scharff-Olsen, Camilla Hjorth; Galatius, Anders; Teilmann, Jonas; Dietz, Rune; Andersen, Signe May; Jarnit, Simon; Kroner, Anne-Mette; Botnen, Amanda Bolt; Lundström, Karl; Møller, Peter Rask; Olsen, Morten Tange.
I: I C E S Journal of Marine Science, Bind 76, Nr. 1, 2019, s. 284-297.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Diet of seals in the Baltic Sea region
T2 - a synthesis of published and new data from 1968 to 2013
AU - Scharff-Olsen, Camilla Hjorth
AU - Galatius, Anders
AU - Teilmann, Jonas
AU - Dietz, Rune
AU - Andersen, Signe May
AU - Jarnit, Simon
AU - Kroner, Anne-Mette
AU - Botnen, Amanda Bolt
AU - Lundström, Karl
AU - Møller, Peter Rask
AU - Olsen, Morten Tange
PY - 2019
Y1 - 2019
N2 - A crucial first step in assessing and managing the role and impacts of predators on their environment is knowledge on their foraging behaviour and diet. Here, we synthesize previously published and newly generated data on the diet of harbour seals, grey seals, and ringed seals in the Baltic Sea region. More than 45 000 otoliths recovered from 3147 samples of scats and digestive tracts were collected throughout all seasons and most Baltic Sea sub-basins from 1968 to 2013. The data revealed a large extent of interspecific, spatial, and seasonal variation in seal diet, implying that caution should be made when extrapolating from one species, area or season, to others. Still, a few fish species, including Atlantic herring, sprat, cod, and sandeels had high occurrence across seal species and locations. The compiled data provide the first overview of seal diet across the entire Baltic Sea region, but also comes with several limitations. Thus, while the data presented here constitutes an important reference for future inference, it also illustrates an urgent need for standardizing methodology across studies on the diet of seals and other aquatic predators.
AB - A crucial first step in assessing and managing the role and impacts of predators on their environment is knowledge on their foraging behaviour and diet. Here, we synthesize previously published and newly generated data on the diet of harbour seals, grey seals, and ringed seals in the Baltic Sea region. More than 45 000 otoliths recovered from 3147 samples of scats and digestive tracts were collected throughout all seasons and most Baltic Sea sub-basins from 1968 to 2013. The data revealed a large extent of interspecific, spatial, and seasonal variation in seal diet, implying that caution should be made when extrapolating from one species, area or season, to others. Still, a few fish species, including Atlantic herring, sprat, cod, and sandeels had high occurrence across seal species and locations. The compiled data provide the first overview of seal diet across the entire Baltic Sea region, but also comes with several limitations. Thus, while the data presented here constitutes an important reference for future inference, it also illustrates an urgent need for standardizing methodology across studies on the diet of seals and other aquatic predators.
U2 - 10.1093/icesjms/fsy159
DO - 10.1093/icesjms/fsy159
M3 - Journal article
C2 - 27899565
VL - 76
SP - 284
EP - 297
JO - ICES Journal of Marine Science
JF - ICES Journal of Marine Science
SN - 1054-3139
IS - 1
ER -
ID: 210609523