FN Archimer Export Format
PT J
TI Functional roles of an engineer species for coastal benthic invertebrates and demersal fish
BT 
AF CHAALALI, Aurelie
   BRIND'AMOUR, Anik
   DUBOIS, Stanislas
   LE BRIS, Herve
AS 1:1,2;2:1;3:3;4:2;
FF 1:PDG-RBE-EMH;2:PDG-RBE-EMH;3:PDG-ODE-DYNECO-LEBCO;4:;
C1 IFREMER, Ecol & Models Appl Fishery Resources, Nantes, France.
   INRA, Agrocampus Ouest, ESE, Ecol & Ecosyst Hlth, Rennes, France.
   IFREMER, Brittany Ctr, LEBCO, Plouzane, France.
C2 IFREMER, FRANCE
   INRA, FRANCE
   IFREMER, FRANCE
SI NANTES
   BREST
SE PDG-RBE-EMH
   PDG-ODE-DYNECO-LEBCO
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-france
   copubli-p187
IF 2.34
TC 4
UR https://archimer.ifremer.fr/doc/00396/50722/51431.pdf
   https://archimer.ifremer.fr/doc/00396/50722/51432.pdf
LA English
DT Article
DE ;coastal nurseries;fish community;Haploops nirae;isotopic diversity indices;stable isotopes
AB Through their tissues or activities, engineer species create, modify, or maintain habitats and alter the distribution and abundance of many plants and animals. This study investigates key ecological functions performed by an engineer species that colonizes coastal ecosystems. The gregarious tubiculous amphipod Haploops nirae is used as a biological model. According to previous studies, the habitat engineered by H.nirae (i.e., Haploops habitat) could provide food and natural shelter for several benthic species such as benthic diatoms belonging to the gender Navicula, the micrograzer Geitodoris planata, or the bivalve Polititapes virgineus. Using data from scientific surveys conducted in two bays, this study explored whether (1) the Haploops sandy-mud community modifies invertebrate and ichthyologic community structure (diversity and biomass); (2) H.nirae creates a preferential feeding ground; and (3) this habitat serves as a refuge for juvenile fish. Available Benthic Energy Coefficients, coupled with more traditional diversity indices, indicated higher energy available in Haploops habitat than in two nearby habitats (i.e., Sternaspis scutata and Amphiura filiformis/Owenia fusiformis habitats). The use of isotopic functional indices (IFIs) indicated (1) a higher functional richness in the Haploops habitat, related to greater diversity in food sources and longer food chains; and (2) a higher functional divergence, associated with greater consumption of a secondary food source. At the invertebrate-prey level, IFIs indicated little specialization and little trophic redundancy in the engineered habitat, as expected for homogenous habitats. Our results partly support empirical knowledge about engineered versus nonengineered habitats and also add new perspectives on habitat use by fish and invertebrate species. Our analyses validated the refuge-area hypothesis for a few fish species. Although unique benthic prey assemblages are associated with Haploops habitat, the hypothesis that it is a preferential feeding area was not verified. However, specialist feeding behavior was observed for predators, which calls for further investigation. 
PY 2017
PD AUG
SO Ecology And Evolution
SN 2045-7758
PU Wiley
VL 7
IS 15
UT 000407485300001
BP 5542
EP 5559
DI 10.1002/ece3.2857
ID 50722
ER

EF