FN Archimer Export Format
PT J
TI Effects of alga Fucus serratus decline on benthic assemblages and trophic linkages at its retreating southern range edge
BT 
AF DUARTE, Linney
   ROSSI, Francesca
   DOCAL, Cristina
   VIEJO, Rosa M.
AS 1:1;2:2;3:3;4:1;
FF 1:;2:;3:;4:;
C1 Univ Rey Juan Carlos, Area Biodiversidad & Conservac, Madrid 28933, Spain.
   Univ Montpellier, CNRS, MARBEC, UMR 9190, F-34095 Montpellier, France.
   Univ Coimbra, IMAR CMA Inst Mar, Dept Ciencias Vida, P-3004517 Coimbra, Portugal.
C2 UNIV REY JUAN CARLOS, SPAIN
   UNIV MONTPELLIER, FRANCE
   UNIV COIMBRA, PORTUGAL
UM MARBEC
IF 2.361
TC 10
UR https://archimer.ifremer.fr/doc/00626/73845/73611.pdf
   https://archimer.ifremer.fr/doc/00626/73845/73612.pdf
LA English
DT Article
DE ;Canopy-forming algae;Fucus serratus;Rear range edge margin;delta N-15;delta C-13;Stable isotope analysis;Food web
AB Canopy-forming seaweeds are important coastal ecosystem engineers that sustain diverse multi-trophic assemblages. Their losses, with the subsequent reduction in habitat complexity, have been documented across many parts of the world and are often attributed to climate change and other anthropogenic factors. The general aim of the present study was to understand the repercussions of the decline of the canopy-forming alga Fucus serratus L. at its retreating southern range edge in the diversity and food-web linkages of intertidal assemblages. Few studies have attempted to document changes in benthic food webs following canopy loss. We examined the differences among southern locations situated at different distances from the range margin: those at the very edge, where F. serratus experienced a dramatic decline during recent years (marginal locations), and those where F. serratus is still dominant (central locations). Comparisons were made among locations situated at the same latitude and sharing a recent history of F. serratus dominance. Trophic relationships were analyzed using natural abundances of carbon and nitrogen stable isotopes. We report clear changes in the structure of benthic assemblages and lower trophic positioning of some consumers, suggesting an overall shrinkage of the food web length at the contracting range edge of F. serratus, which will transfer to higher trophic levels. Under present and future climatic scenarios, shifts in the distribution of coastal ecosystem engineers could entail a reorganization of local natural assemblages and food webs. More attention should be given to measure how much these shifts can modify the whole coastal food webs and their functioning. 
PY 2015
PD MAY
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 527
UT 000354395700007
BP 87
EP 103
DI 10.3354/meps11248
ID 73845
ER

EF