@article{fdi:010060477, title = {{C}limate variability and massive mortalities challenge giant clam conservation and management efforts in {F}rench {P}olynesia atolls}, author = {{A}ndr{\'e}fou{\¨e}t, {S}erge and {V}an {W}ynsberge, {S}. and {G}aertner-{M}azouni, {N}abila and {M}enk{\`e}s, {C}hristophe and {G}ilbert, {A}. and {R}emoissenet, {G}.}, editor = {}, language = {{ENG}}, abstract = {{I}n 2004, the first no-take area ({NTA}) dedicated to the conservation of giant clams {T}ridacna maxima was implemented in {T}atakoto {A}toll, {F}rench {P}olynesia. {T}his {NTA} protected a unique area worldwide, with extraordinarily high giant clam densities (up to 337 individuals per m(2) on 20-m transect). {I}n 2012, a stock assessment survey revealed a dramatic decrease of the clam population. {T}he reduced densities peaked at 38 ind m(-2) and the stock in the {NTA} decreased from 20.1 +/- 6.0 million to 1.9 +/- 0.55 million clams (mean +/- 95% confidence interval). {L}osses of similar proportions were observed throughout the atoll. {R}emarkably, the 83% overall loss of this natural resource used daily for consumption and for exports of clam meat to {T}ahiti {I}sland went unnoticed by the local population. {F}ield clues, including the size of live juveniles attached to the inside of dead shells, pointed to a massive mortality occurring about 3 years before the 2012 survey. {E}xaminations of sea surface temperature satellite data identified a high range of temperature variations before {M}arch 2009. {I}n agreement with past and recent events in other atolls, this anomaly is the most likely explanation of the massive loss of giant clams in {T}atakoto {A}toll, although the exact hydrological and biological secondary mechanisms that occurred in the lagoon remain unclear. {T}he consequences of the massive die-off inside and outside the {NTA} require new long-term management strategies, by reinforcing the top-down national giant clam management arrangements and by setting flexible management objectives across a network of islands.}, keywords = {{T}uamotu archipelago ; {T}ridacna maxima ; {F}isheries management ; {C}ommunity-based management ; {CITES} ; {T}op-down conservation ; {B}ottom-up conservation ; {POLYNESIE} {FRANCAISE} ; {TUAMOTU} {GAMBIER}}, booktitle = {}, journal = {{B}iological {C}onservation}, volume = {160}, numero = {}, pages = {190--199}, ISSN = {0006-3207}, year = {2013}, DOI = {10.1016/j.biocon.2013.01.017}, URL = {https://www.documentation.ird.fr/hor/fdi:010060477}, }