FN Archimer Export Format
PT J
TI Influence of food availability on the spatial distribution of juvenile fish within soft sediment nursery habitats
BT 
AF TABLEAU, Adrien
   BRIND'AMOUR, Anik
   WOILLEZ, Mathieu
   LE BRIS, H.
AS 1:1,2;2:2;3:3;4:1;
FF 1:PDG-RBE-EMH;2:PDG-RBE-EMH;3:PDG-RBE-STH-LBH;4:;
C1 AGROCAMPUS OUEST, ESE Ecol & Sante Ecosyst UMR985, 65 Rue St Brieuc,CS 84215, F-35042 Rennes, France.
   IFREMER, EMH, Rue Ile Yeu,BP 21105, F-44311 Nantes 03, France.
   IFREMER, LBH, ZI Pointe Diable, CS 10070, F-29280 Plouzane, France.
C2 AGROCAMPUS OUEST, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
SI NANTES
   BREST
SE PDG-RBE-EMH
   PDG-RBE-STH-LBH
IN WOS Ifremer jusqu'en 2018
   copubli-france
IF 1.888
TC 19
UR https://archimer.ifremer.fr/doc/00300/41100/40273.pdf
LA English
DT Article
CR NURSE 2008
BO Gwen Drez
DE ;Predator-prey relationship;Nursery habitat;Flatfish;Demersal fish;Benthic invertebrates;Spatial overlap;Food limitation
AB Soft sediments in coastal shallow waters constitute nursery habitats for juveniles of several flatfishes. The quality of a nursery is defined by its capacity to optimize the growth and the survival of juvenile fish. The influence of biotic factors, such as food availability, is poorly studied at the scale of a nursery ground. Whether food availability limits juvenile survival is still uncertain. A spatial approach is used to understand the influence of food availability on the distribution of juvenile fish of various benthic and demersal species in the Bay of Vilaine (France), a productive nursery ground. We quantified the spatial overlap between benthic macro-invertebrates and their predators (juvenile fish) to assess if the latter were spatially covering the most productive areas of the Bay. Three scenarios describing the shapes of the predator–prey spatial relationship were tested to quantify the strength of the relationship and consequently the importance of food availability in determining fish distribution. Our results underline that both food availability and fish densities vary greatly over the nursery ground. When considering small organisational levels (e.g., a single fish species), the predator–prey spatial relationship was not clear, likely because of additional environmental effects not identified here; but at larger organisational level (the whole juvenile fish community), a strong overlap between the fish predators and their prey was identified. The evidence that fish concentrate in sectors with high food availability suggests that either food is the limiting factor in that nursery or/and fish display behavioural responses by optimising their energetic expenditures associated with foraging. Further investigations are needed to test the two hypotheses and to assess the impact of benthic and demersal juvenile fish in the food web of coastal nurseries.
PY 2016
PD MAY
SO Journal Of Sea Research
SN 1385-1101
PU Elsevier Science Bv
VL 111
UT 000378180900008
BP 76
EP 87
DI 10.1016/j.seares.2015.12.004
ID 41100
ER

EF