FN Archimer Export Format
PT J
TI Nutritional grouping of marine forage species reveals contrasted exposure of high trophic levels to essential micro‐nutrients
BT 
AF Chouvelon, Tiphaine
   Gilbert, Lola
   Caurant, Florence
   Méndez‐Fernandez, Paula
   Bustamante, Paco
   Brault‐Favrou, Maud
   Spitz, Jérôme
AS 1:1,2;2:1,3;3:1,3;4:1;5:4,5;6:4;7:1,3;
FF 1:PDG-RBE-CCEM;2:;3:;4:;5:;6:;7:;
C1 Observatoire Pelagis, UAR 3462 La Rochelle Univ./CNRS, La Rochelle, France
   Ifremer, Unité Contamination Chimique des Écosystèmes Marins (CCEM) Nantes Cedex, France
   Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 La Rochelle Univ./CNRS, Villiers‐en‐Bois ,France
   Littoral Environnement et Sociétés (LIENSs), UMR 7266 La Rochelle Univ./CNRS, La Rochelle, France
   Inst. Univ. de France (IUF) ,Paris, France
C2 UNIV LA ROCHELLE, FRANCE
   IFREMER, FRANCE
   CNRS, FRANCE
   UNIV LA ROCHELLE, FRANCE
   INST UNIV FRANCE, FRANCE
SI NANTES
SE PDG-RBE-CCEM
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
IF 3.4
TC 7
UR https://archimer.ifremer.fr/doc/00754/86642/92092.pdf
   https://archimer.ifremer.fr/doc/00754/86642/92093.pdf
LA English
DT Article
CR EVHOE 2002
   EVHOE 2003
   EVHOE 2004
   EVHOE 2005
   EVHOE 2006
   EVHOE 2007
   EVHOE 2008
   EVHOE EVALUATION HALIEUTIQUE OUEST DE L'EUROPE
BO Thalassa
DE ;cetaceans;inorganic elements;macro-minerals;matter transfer;prey;trace metals
AB By transferring energy and nutrients from plankton to top predators, forage species play a major ecological role in marine food webs. While large differences in energy densities have been demonstrated among these species, other determinants of their quality remain poorly explored. We analysed 78 forage species from the Bay of Biscay, NE Atlantic, for their concentrations in various chemical elements with a documented biological role (i.e. micro-nutrients). Species encompassed jellyfish, crustaceans, cephalopods, cartilaginous and bony fish. Elements included two essential macro-minerals (nitrogen and phosphorous) and nine trace elements (arsenic (As), cobalt, copper (Cu), chromium, iron, manganese, nickel, selenium (Se), zinc). We showed a broad range of elemental composition values across forage species, partly driven by taxonomy (fish versus crustaceans/cephalopods) or their habitat (coastal versus oceanic, pelagic versus benthic). Some elements (As, Cu or Se) were more variable than others, especially in fish for Cu and Se. The 78 forage species were then classified by hierarchical clustering analysis (HCA) into different nutritional groups, based on their composition in eleven elements. Mean concentrations of each element in the diet of eight cetacean species was finally calculated, as well as the importance of each nutritional group (as defined by HCA including all elements) for each predator species. We revealed contrasting diets in terms of exposure to elements. Neritic common dolphins and harbour porpoises but also minke whales were thus mainly supplied by the Se-enriched nutritional group composed of small (pelagic) schooling fish (including sandeels, (horse) mackerel and also some Clupeids), while the diets of pilot whales or Risso's dolphins that mostly consume benthic cephalopods were clearly Cu-enriched. This study raises the issue of essential element composition as another determinant of food quality, and the risk associated with changes in forage species' availability for the proper functioning of marine food webs and ecosystems. 
PY 2022
PD JUN
SO Oikos
SN 0030-1299
PU Wiley
VL 2022
IS 7
UT 000766593600001
DI 10.1111/oik.08844
ID 86642
ER

EF