Dominant benthic mollusks in closed atolls, French Polynesia

Salvat, Bernard

doi:10.3755/galaxea.11.197

Cited by 7 publications

(4 citation statements)

References 12 publications

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“…These findings concur with those reported in a number of qualitative surveys that were excluded from our meta‐analysis (see methods for reasons). In French Polynesia, among the 53 atoll lagoons listed by Salvat (), 41 hold ‘huge’ (i.e. tens of ind.…”

Section: Discussionmentioning

confidence: 99%

Drivers of density for the exploited giant clam Tridacna maxima: a meta‐analysis

et al. 2015

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Giant clam populations have been over‐exploited throughout their range over the past decades for their meat and shells. Tridacna maxima, commonly known as the ‘small giant clam’, has remained relatively untargeted by fishers in areas where larger species occur (e.g. Tridacna squamosa), and high densities of the species are still observed on some isolated and enclosed reefs of the Central Pacific. However, it is unclear whether reported discrepancies in densities worldwide reflect differences in fishing pressure only or a combination of differences in exploitation levels and environmental forcing. We reviewed T. maxima surveys throughout its range to (i) identify patterns of density at global scale, site scale (e.g. island) and intrasite scale; (ii) discuss the influence of sampling method on density estimates; and (iii) identify the primary drivers of giant clam density along gradients of human pressure and natural forcing. We found 59 studies that reported density estimates for 172 sites across 26 countries in the Indo‐Pacific and Red Sea. At intrasite scale, densities were strongly dependent on sampling protocols and surveyed habitats. At site scale, we found close links between T. maxima density and human population per reef area, suggesting that isolated reefs where exploitation only recently started may be more vulnerable to stock collapse in the future. Density patterns were also found to vary significantly depending on reef type (e.g. atoll, island, continental coastline). We discuss how natural processes and fishing pressure may control population dynamics and densities among sites, and make recommendations for future research.

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Section: Discussionmentioning

confidence: 99%

Drivers of density for the exploited giant clam Tridacna maxima: a meta‐analysis

et al. 2015

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“…This induced an attenuated and slightly delayed tide cycle in the lagoon compared to the ocean. In the past, Tuamotu atolls have been ranked according to the number of passes (Salvat, 2009), but this descriptive view is fonctionnaly limited. More functional typologies have been proposed, that relate geomorphology, water renewal mechanisms, and hydrobiological regime (Delesalle and Sournia, 1992;Dufour et al, 2001;Andréfouët et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Tidal flushing and wind driven circulation of Ahe atoll lagoon (Tuamotu Archipelago, French Polynesia) from in situ observations and numerical modelling

Dumas

Gendre

Thomas

et al. 2012

Marine Pollution Bulletin

100

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“…The southern rim is separated by numerous channels (hoa) and sand patches resulting in ∼100 small islets. Although Reao Atoll has a ‘closed’ lagoon (Pirazzoli et al., 1987), water exchanges daily from ocean to lagoon through these hoa (Meyer & Salvat 2009, p. 334; Salvat, 2009, p. 2). Mollusc and echinoderm diversity is low, but richness is high with the large bivalve, Tridacna maxima , accounting for half the biomass having maximum densities up to 200 per m 2 (Salvat, 1972, p. 98), while the violet‐mouthed jewel box ( Chama iostoma ) and the black‐lipped pearl shell ( Pinctada maculata ) are also highly abundant benthic bivalves (Salvat, 2009, table 2).…”

Section: Environmental Context Of the Study Areamentioning

confidence: 99%

Sacred offerings and secular foods on Reao Atoll, Tuamotu Archipelago, East Polynesia

Weisler,

Rogers,

Hua

et al. 2024

Archaeology in Oceania

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In 1976, Yosihiko H. Sinoto conducted extensive archaeological survey and excavations on Reao Atoll, Tuamotu Archipelago as part of a Japanese, multi‐disciplinary expedition led by Prof. Sachiko Hatanaka. Primarily excavating three marae and four habitation sites totalling ∼180 m2, more than 25000 vertebrate remains were recovered. We report the jidentification and analysis of the fauna and contrast the inventories from secular and sacred contexts inferring the ritual use of pig, dog, turtle and tuna (Scombridae), as well as identifying relatively larger parrotfish (Scaridae), groupers (Serranidae), snappers (Lutjanidae), the Humphead wrasse (Cheilinus undulatus) and sharks/rays (Elasmobranchii) on marae. With a suite of 11 new AMS age determinations, we report the first directly dated precontact records for pig and dog and anchor the marae chronology possibly beginning in the thirteenth century. The 800 calBP dates imply that at least one of the Tuamotu atolls may have emerged nearly two centuries prior to the hypothesised ‘cross‐over’ date of 600 BP. Consequently, the earliest chronology of atoll emergence along the 1000 km length of the Tuamotus might vary, thus providing landscapes for human colonisation at slightly different times which has implications for the speed and tempo of colonisation.

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Dominant benthic mollusks in closed atolls, French Polynesia

Abstract: The most numerous groups contain all 5 species or at least 4 of them. Research topics are suggested in order to understand the ability of each mollusk species to colonize and maintain its dominance in a confined lagoon.

Cited by 7 publications

References 12 publications

Drivers of density for the exploited giant clam Tridacna maxima: a meta‐analysis

Drivers of density for the exploited giant clam Tridacna maxima: a meta‐analysis

Tidal flushing and wind driven circulation of Ahe atoll lagoon (Tuamotu Archipelago, French Polynesia) from in situ observations and numerical modelling

Sacred offerings and secular foods on Reao Atoll, Tuamotu Archipelago, East Polynesia

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