FN Archimer Export Format
PT J
TI Niches of marine mammals in the European Arctic
BT 
AF MacKenzie, Kirsteen
   Lydersen, C.
   Haug, T.
   Routti, H.
   Aars, J.
   Andvik, C.M.
   Borgå, K.
   Fisk, A.T.
   Meier, S.
   Biuw, M.
   Lowther, A.D.
   Lindstrøm, U.
   Kovacs, K.M.
AS 1:1,2,3;2:1;3:2;4:1;5:1;6:4;7:4;8:5;9:6;10:2;11:1;12:2,7;13:1;
FF 1:PDG-RBE-HMMN-LRHBL;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;
C1 Norwegian Polar Institute, Fram Centre, Hjalmar Johansens Gate 14, Tromsø 9007, Norway
   Institute of Marine Research, Fram Centre, Hjalmar Johansens Gate 14, Tromsø 9007, Norway
   Ifremer, HMMN, Centre Manche Mer du Nord, 150 Quai Gambetta BP 699 62321, Boulogne-sur-Mer, France
   University of Oslo, Kristine Bonnevies hus, Blindernvn. 31, Oslo 0371, Norway
   Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Ave., Windsor, ON N9B 3P4, Canada
   Institute of Marine Research, Nordnesgaten 50, Bergen 5005, Norway
   Department of Arctic and Marine Biology, Arctic University of Norway, Tromsø, Norway
C2 NORWEGIAN POLAR INST, NORWAY
   IMR, NORWAY
   IFREMER, FRANCE
   UNIV OSLO, NORWAY
   UNIV WINDSOR, CANADA
   IMR (BERGEN), NORWAY
   UNIV ARCTIC UIT NORWAY, NORWAY
SI BOULOGNE
SE PDG-RBE-HMMN-LRHBL
IN WOS Ifremer UPR
   DOAJ
   copubli-europe
   copubli-int-hors-europe
IF 6.9
TC 13
UR https://archimer.ifremer.fr/doc/00751/86258/91562.pdf
   https://archimer.ifremer.fr/doc/00751/86258/91563.txt
LA English
DT Article
DE ;Marine mammal community;Arctic marine ecosystem;Ecological niche metrics;Trophic sources;Trophic gradient;Niche partitioning
AB The Arctic is warming rapidly, with concomitant sea ice losses and ecosystem changes. The animals most vulnerable to Arctic food web changes are long-lived and slow-growing such as marine mammals, which may not be able to adapt rapidly enough to respond to changes in their resource bases. To determine the current extent and sources of these resource bases, we examined isotopic and trophic niches for marine mammals in the European Arctic using skin carbon (δ13C) and nitrogen (δ 15N) stable isotope (SI) compositions from 10 species: blue, fin, humpback, minke, sperm and white whales, bearded and ringed seals, walruses and polar bears, and dietary fatty acids (FAs) in polar bears, walruses and most of the whale species listed here. SI values showed clear species separation by trophic behaviour and carbon sources. Bearded seals, walruses and white whales had the smallest isotopic niches; these species are all resident High Arctic species and are likely to be particularly vulnerable to changes in Arctic ecosystems. We found clear separation between FA groupings driven by pelagic, benthic and planktonic/algal sources: pelagic FAs in all whales, benthic FAs in walruses, and copepod/algae/dinoflagellate FAs in polar bears, with some polar bear compositions approaching those of the whales and walruses. There is strong niche partitioning between study species with minimal functional redundancy, which could impact Arctic ecosystem structure and connectivity if populations of these large nutrient vectors are reduced or lost. 
PY 2022
PD MAR
SO Ecological Indicators
SN 1470-160X
PU Elsevier BV
VL 136
UT 000761405900002
DI 10.1016/j.ecolind.2022.108661
ID 86258
ER

EF