@article{fdi:010060421,
  title = {{B}est management strategies for sustainable giant clam fishery in {F}rench {P}olynesia {I}slands : answers from a spatial modeling approach},
  author = {{V}an {W}ynsberge, {S}. and {A}ndr{\'e}fou{\¨e}t, {S}erge and {G}ilbert, {A}. and {S}tein, {A}. and {R}emoissenet, {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he giant clam {T}ridacna maxima has been largely overexploited in many tropical regions over the past decades, and was therefore listed in appendix {II} of the {C}onvention of {I}nternational {T}rade in {E}ndangered {S}pecies ({CITES}) in 1985. {I}n {F}rench {P}olynesia, several atolls and islands harbor the world's highest stocks of giant clams in very shallow and accessible areas, which are therefore highly vulnerable to fishing pressure. {T}he local fishery authority (i.e., {D}irection des {R}esources {M}arines or "{DRM}") implemented several management schemes in 2002 to control and regulate fishing pressure. {H}owever, for further decisions {DRM} was missing a sensitivity analysis on the effectiveness of the possible management actions. {H}ere, we report on the use of a deterministic {V}iable {P}opulation {A}nalysis ({VPA}) and spatially-explicit age-based population model that simulated the 30-year trajectory of a {T}ridacna maxima stock under different management approaches. {S}pecifically, given various scenarios of intra-island larval dispersal, we tested which of {N}o-take-{A}reas ({NTA}s), rotational closures, size limits, quotas, and restocking schemes would lead to the highest future stocks in {T}ubuai and {R}aivavae, two exploited islands of the {A}ustral archipelago. {F}or both islands, stock abundances were estimated in 2004/2010 and 2005/2010 respectively, and natural mortalities were assessed previously only in {T}ubuai. {W}hen compared to field data, the model successfully predicted the 2010 stocks for {T}ubuai, but proved to be less reliable for {R}aivavae, where natural mortality rates may well be different from those on {T}ubuai. {F}or {T}ubuai, the spatial model suggested that reducing fishing effort (through fixed quotas) and banning fishing below the 12 cm size limit (as currently implemented) were the most effective management actions to sustain {T}. maxima populations into the future. {I}mplementing {NTA}s was of poor effectiveness. {NTA}s increased giant clam stock inside the protected area, but also increased overfishing in the neighboring areas, and were ineffective overall.},
  keywords = {{POLYNESIE} {FRANCAISE}},
  booktitle = {},
  journal = {{P}los {O}ne},
  volume = {8},
  numero = {5},
  pages = {e64641},
  ISSN = {1932-6203},
  year = {2013},
  DOI = {10.1371/journal.pone.0064641},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060421},
}