@article{fdi:010063614,
  title = {{B}iomass consumption by breeding seabirds in the western {I}ndian {O}cean : indirect interactions with fisheries and implications for management},
  author = {{D}anckwerts, {D}. {K}. and {M}c{Q}uaid, {C}. {D}. and {J}aeger, {A}nnie and {M}c{G}regor, {G}. {K}. and {D}wight, {R}. and {L}e {C}orre, {M}. and {J}aquemet, {S}{\'e}bastien},
  editor = {},
  language = {{ENG}},
  abstract = {{F}isheries potentially affect seabirds both directly and indirectly. {W}ell-documented direct effects have resulted in significant losses to seabird populations, but indirect effects are less well known. {O}ne way in which tropical seabirds may be indirectly affected is through overexploitation of large subsurface predators. {T}ropical seabirds must forage over wide areas to attain sufficient prey and have evolved various methods of increasing foraging efficiency. {O}nestrategy is their association with surface-feeding tunas. {W}hen feeding, these predators drive prey to the surface, making them available to seabirds feeding from above. {L}osses in predator biomass will reduce prey accessibility (but not necessarily prey abundance) for seabirds, contributing to declines in bird populations. {T}o explore indirect fisheries effects, we compared estimates of the magnitude and spatial distributions of consumption by breeding seabirds with fisheries offtake in the western {I}ndian {O}cean ({WIO}). {D}ata from the literature were compared with {I}ndian {O}cean {T}una {C}ommission longline and purse seine landings of selected tuna and billfish species from between 2000 and 2009. {B}reeding seabird populations (adults and immature birds) were estimated at similar to 19 million individuals, assuming 50% breeding success. {B}ased on the literature, these birds will consume between 150 000 and 500 000 metric tonnes (t) of prey; values that are of the same magnitude as mean annual longline (904+/-632 t) and purse seine (349 861+/-61 820 t) landings for the region. {S}patial overlap between fisheries and seabirds is high, especially around the {S}eychelles, suggesting that the indirect impacts of fisheries on seabird populations may be great. {S}ooty {T}ern ({O}nychoprion fuscatus) is by far the dominant seabird in the study area, accounting for over 80% of numbers and consumption estimates. {O}ur results highlight the importance of seabirds within {WIO} marine trophic webs and emphasize the potential indirect effects of industrial tuna fisheries on their populations.},
  keywords = {longline ; prey accessibility ; purse-seine ; sooty tern ; subsurface predators ; tropical seabird ; tuna ; {OCEAN} {INDIEN} ; {ZONE} {TROPICALE} ; {MASCAREIGNES} ; {SEYCHELLES} ; {MOZAMBIQUE} {CANAL} ; {SOMALIE} ; {MER} {ROUGE}},
  booktitle = {},
  journal = {{I}ces {J}ournal of {M}arine {S}cience},
  volume = {71},
  numero = {9},
  pages = {2589--2598},
  ISSN = {1054-3139},
  year = {2014},
  DOI = {10.1093/icesjms/fsu093},
  URL = {https://www.documentation.ird.fr/hor/fdi:010063614},
}