FN Archimer Export Format
PT J
TI Exploitation of intertidal feeding resources by the Red Knot Calidris canutus under megatidal conditions (Bay of Saint-Brieuc, France)
BT 
AF STURBOIS, Anthony
   PONSERO, Alain
   DESROY, Nicolas
   LE MAO, Patrick
   FOURNIER, Jerome
AS 1:1,2;2:1;3:3;4:3;5:4,5;
FF 1:;2:;3:PDG-ODE-LITTORAL-LERBN;4:PDG-ODE-LITTORAL-LERBN;5:;
C1 Reserve Nat Baie St Brieuc, F-22120 Hillion, France.
   VivArmor Nat, F-22000 St Brieuc, France.
   IFREMER, Lab Environm & Ressources, Stn Dinard, F-35801 Dinard, France.
   CNRS, UMR BOREA 7208, F-75231 Paris 05, France.
   MNHN, Stn Marine, F-35801 Dinard, France.
C2 RESERVE NAT BAIE ST BRIEUC, FRANCE
   VIVARMOR, FRANCE
   IFREMER, FRANCE
   CNRS, FRANCE
   MNHN, FRANCE
SI DINARD
SE PDG-ODE-LITTORAL-LERBN
   MNHN
IN WOS Ifremer jusqu'en 2018
   copubli-france
IF 2.148
TC 4
UR https://archimer.ifremer.fr/doc/00226/33767/32194.pdf
LA English
DT Article
DE ;Diet;Benthos;Intertidal flat;Megatidal environment;Bay of Saint-Brieuc
AB The feeding ecology of the red knot has been widely studied across its wintering range. Red knots mainly select bivalves and gastropods, with differences between sites due to variation in prey availability. Shorebird’s diet is also influenced or controlled by the tidal regime. The aim of this paper is to demonstrate the adaptation of foraging red knots to the megatidal environment. The variation in their diet during tidal cycles was studied in the bay of Saint-Brieuc, a functional unit for this species. The method used combined macrofauna, distribution of foraging birds and diet data. Comparative spatial analyses of macrofauna and distribution of foraging red knots have shown that the bay's four benthic assemblages are exploited by birds. By analysing droppings, we highlighted that bivalve molluscs are the main component of their diet, as shown in most overwintering sites. Fifteen types of prey were identified and Donax vittatus was discovered to be a significant prey item. The relative proportion of each main prey item differs significantly depending on the benthic assemblage used to forage. All available benthic assemblages and all potential feeding resources can be used during a single tidal cycle, reflecting an adaptation to megatidal conditions. This approach develops accurate knowledge about the feeding ecology of birds which managers need in order to identify optimal areas for the conservation of waders based on the areas and resources actually used by the birds.
PY 2015
PD FEB
SO Journal Of Sea Research
SN 1385-1101
PU Elsevier Science Bv
VL 96
UT 000347866100004
BP 23
EP 30
DI 10.1016/j.seares.2014.11.001
ID 33767
ER

EF