@article{fdi:010072816,
  title = {{P}lankton food-web functioning in anthropogenically impacted coastal waters ({SW} {M}editerranean {S}ea) : an ecological network analysis},
  author = {{M}eddeb, {M}. and {G}rami, {B}. and {C}haalali, {A}. and {H}araldsson, {M}. and {N}iquil, {N}. and {P}ringault, {O}livier and {H}laili, {A}. {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he study is the first attempt to (i) model spring food webs in three {SW} {M}editerranean ecosystems which are under different anthropogenic pressures and (ii) to project the consequence of this stress on their function. {L}inear inverse models were built using the {M}onte {C}arlo method coupled with {M}arkov {C}hains to characterize the food web status of the {L}agoon, the {C}hannel (inshore waters under high eutrophication and chemical contamination) and the {B}ay of {B}izerte (offshore waters under less anthropogenic pressure). {E}cological network analysis was used for the description of structural and functional properties of each food web and for inter-ecosystem comparisons. {O}ur results showed that more carbon was produced by phytoplankton in the inshore waters (966-1234 mg {C} m(-2) d(-1)) compared to the {B}ay (727 mg {C} m(-2) d(-1) ). {T}he total ecosystem carbon inputs into the three food webs was supported by high primary production, which was mainly due to > 10 mu m algae. {H}owever, the three carbon pathways were characterized by low detritivory and a high herbivory which was mainly assigned to protozooplankton. {T}his latter was efficient in channelling biogenic carbon. {I}n the {L}agoon and the {C}hannel, foods webs acted almost as a multivorous structure with a tendency towards herbivorous one, whereas in the {B}ay the herbivorous pathway was more dominant. {E}cological indices revealed that the {L}agoon and the {C}hannel food webs/systems had high total system throughput and thus were more active than the {B}ay. {T}he {B}ay food web, which had a high relative ascendency value, was more organized and specialized. {T}his inter-ecosystem difference could be due to the varying levels of anthropogenic impact among sites. {I}ndeed, the low value of {F}inn's cycling index indicated that the three systems are disturbed, but the {L}agoon and the {C}hannel, with low average path lengths, appeared to be more stressed, as both sites have undergone higher chemical pollution and nutrient loading. {T}his study shows that ecosystem models combined with ecological indices provide a powerful approach to detect change in environmental status and anthropogenic impacts.},
  keywords = {{F}ood-web modelling ; {E}cological network analysis ; {M}editerranean coastal waters ; {P}lankton ecology ; {MEDITERRANEE} {SUD} {OUEST} ; {TUNISIE} ; {BIZERTE}},
  booktitle = {},
  journal = {{P}rogress in {O}ceanography},
  volume = {162},
  numero = {},
  pages = {66--82},
  ISSN = {0079-6611},
  year = {2018},
  DOI = {10.1016/j.pocean.2018.02.013},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072816},
}