@article{fdi:010068160,
  title = {{L}inking small pelagic dietary shifts with ecosystem changes in the {G}ulf of {L}ions},
  author = {{B}rosset, {P}. and {L}e {B}ourg, {B}. and {C}ostalago, {D}. and {B}anaru, {D}. and {V}an {B}everen, {E}. and {B}ourdeix, {J}. {H}. and {F}romentin, {J}. {M}. and {M}{\'e}nard, {F}r{\'e}d{\'e}ric and {S}araux, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}ince 2008, a severe decrease in size and body condition together with a demographic truncation has been observed in the sardine (secondarily in anchovy) population of the {G}ulf of {L}ions ({NW} {M}editerranean {S}ea). {I}n parallel, sprat biomass, which was negligible before, has increased tenfold. {A}ll of these changes have strongly affected the regional fisheries. {U}sing trophic and isotopic data from contrasting periods of low versus high growth and condition, we investigated potential changes in diet and interspecific feeding interactions through time. {E}vidence of resource partitioning was found between sprat and both anchovy and sardine in 2004 and 2005. {S}ince 2010, the isotopic niches of the 3 species have tended to overlap, suggesting higher risk of competition for food resources. {M}oreover, the wider trophic niche of sprat indicates higher variability in individual diets. {A}nchovy and sardine diet varied through time, with a high proportion of large copepods or cladocerans in periods of high growth and condition (1994 and 2007, respectively) versus a dominance of small copepods in the present (2011-2012). {F}urthermore, an important reduction in prey diversity was also identified in the diet of both anchovy and sardine during the most recent period. {O}ur results support the hypothesis that changes in small pelagic fish growth, size and body condition and ultimately biomass could be due to bottom-up control characterized by changes in food availability and increasing potential trophic competition.},
  keywords = {{T}rophic ecology ; {A}nchovy ; {S}ardine ; {S}prat ; {D}ietary overlap ; {NW} {M}editerranean ; {MEDITERRANEE} ; {GOLFE} {DU} {LION}},
  booktitle = {},
  journal = {{M}arine {E}cology {P}rogress {S}eries},
  volume = {554},
  numero = {},
  pages = {157--171},
  ISSN = {0171-8630},
  year = {2016},
  DOI = {10.3354/meps11796},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068160},
}