Reef Fish Communities and Fishery Yields of Tikehau Atoll (Tuamotu Archipelago French Polynesia)

Caillart, Benoït; Harmelin-Vivien, Mireille; Galzin, René; Morize, Eric

doi:10.5479/si.00775630.415-part_iii.1

Cited by 17 publications

(10 citation statements)

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“…Arranging fish families by depth provided results that were redundant with respect to fish distributions by reef location (Table 2), largely because depth was so highly correlated with location, r 5 0.93, r 2 5 0.86, Po0.01. These distributions are generally consistent with those identified in other Polynesian reef settings (Callart et al, 1994).…”

Section: Biological Assessmentsupporting

confidence: 77%

A Marquesan coral reef (French Polynesia) in historical context: an integrated socio‐ecological approach

Aswani

Allen

2008

Aquatic Conservation

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ABSTRACT1. Marine biologists are increasingly aware of the impact that even small human populations can have on coral reefs around the world, while conservationists and fisheries managers have a growing appreciation of the importance of culturally informed management strategies in coral reef conservation efforts. Despite these recognitions, however, examples of integrated field studies are limited.2. In this paper evidence from various disciplines is used to study the interaction between humans and one of the largest reefs in the Marquesas Islands, at Anaho Bay, Nuku Hiva Island, with the aim of assessing possible anthropogenic impacts over time.3. First, it reports on a marine biological survey of the benthic substrates of the bay and the taxonomic composition and spatial distributions of the local fish species. Second, it draws on results from an ongoing archaeological study and integrates these with interviews of village elders to gain a historical perspective on the reef and potential human impacts.4. The biological results indicated that the reef is in a state of decline, although fish densities are moderately high. The archaeological evidence, in turn, demonstrates that human populations have occupied this valley for at least the last 700 years. Throughout this period marine resources have been an important source of both food and raw materials for tools. The archaeological study also highlights aspects of landscape change, both natural and human-induced, that probably have been detrimental to reef health.5. Using the combined biological and anthropological data, this paper considers the nexus of factors that have led to the current reef conditions and considers management issues for the future. Key in this regard are processes that have initiated erosion and soil run-off, and fluctuations in the local human populations.

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Section: Biological Assessmentsupporting

confidence: 77%

A Marquesan coral reef (French Polynesia) in historical context: an integrated socio‐ecological approach

Aswani

Allen

2008

Aquatic Conservation

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“…Sex ratio in this Lutjanus fulvus population, from the size class at male maturity (12 to < 14 cm) through maximum observed size (23.3 cm), is 1 : 1.38 (♂ : ♀). However, a χ 2 analysis indicates the observed ratio (Letourneur et al 1998); and from Tuamotu (Caillart et al 1994); Circles represent specimens from KWMA is not significantly different from 1 : 1 (df = 1, P = 0.0890).…”

mentioning

confidence: 99%

“…Second, we only had 11 samples for fecundity analysis, and these were from a relatively small size-range (3.9 cm) of specimens. Third, although Lutjanus fulvus appears to spawn year-round (Allen 1985, Caillart et al 1994, Randall and Brock (1960) report peak spawning occurs around the full moon in the Society Islands. Only two of our fecundity calculations were from females collected around the full moon.…”

mentioning

confidence: 99%

Rapid Reproductive Analysis and Length–Weight Relation for Blacktail Snapper, <I>Lutjanus Fulvus</I> (Actinopterygii: Perciformes: Lutjanidae), from a Remote Village in Papua New Guinea

Longenecker¹,

Langston²,

Bolick³

et al. 2013

Acta Icth et Piscat

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“…The fishery studies carried out between 1983 and 1987 in Tikehau lagoon showed a homogeneous pattern of yearly landings, with a slight increase in time (Caillart et al 1994). However, the relative abundance of species varied considerably through this period: yields per species doubled or decreased by half without predictive sign, despite similar fishing effort and gear (non-selective fish traps).…”

Section: Introductionmentioning

confidence: 98%

“…A second set of studies concerned the fish communities of the traditional fishery (Morize 1984(Morize , 1985Blanchet et al 1985;Caillart andMorize 1986, 1988) or the biology of target species in the fishery Caillart 1988;Morize and Caillart 1987). The total fish fauna of Tikehau lagoon was studied more intensively in 1987 (Morize et al 1990;Caillart et al 1994) and later in the nineties (Dufour and Harmelin-Vivien 1997). These studies yielded results of major interest on the ecology of reef fishes in atoll environments in the Central Pacific.…”

Section: Introductionmentioning

confidence: 99%

Long-term spatiotemporal variations in coral-reef fish community structure and fishing at a South Pacific atoll

Loma

Chabanet²,

Ferraris

et al. 2009

Aquat. Living Resour.

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-In many atolls of the South Pacific, a shift has occurred in the past couple of decades from traditional to more intensive fishing practices. Increasing fishing pressure on coral reefs raises the need for long-term studies to understand how fish communities react to fishing practice changes. The objective of this study was to analyse the variations of reef fish communities (in terms of species richness, diversity, density and structure) during a long time lapse at Tikehau atoll (Tuamotu archipelago, French Polynesia). The same eight lagoon pinnacles were sampled in 1987 and 2003 at 6 and 12 m depth. Quantitative data were collected by visual census techniques (UVC) on 50 m × 5 m belt transects. Analyses were conducted using a multiple spatial scale (depth, pinnacle and whole lagoon) approach with a particular attention on commercial species such as Scaridae (parrotfish), Acanthuridae (surgeonfish), Lutjanidae (snapper), Lethrinidae (emperor), Serranidae (grouper). Despite an increased sampling effort between 1987 and 2003, the mean species richness per transect decreased significantly from 26.2± 6.2 to 21.6± 9.6. The mean diversity varied similarly. A stronger decrease happened at pinnacles close to the village, where fish density also decreased. Conversely, fish density, species richness and diversity increased at pinnacles less visited by inhabitants. The community structure shifted from commercial species to small site-attached species e.g. Pomacentridae (damselfish), Ptereleotridae (dartfish) as fishing reduced the abundance (and biomass) of targeted stocks. We argue that these spatiotemporal variations resulted from a drastic change in fishing practices over the 16 years period, that shifted a sustainable fishery using traditional fish traps to an unbalanced, species-threatening, selective fishery. This study underlines the need for management and for the implementation of marine protected areas (including no-take zones) in order to protect the coral reef ecosystem and favor sustainable fisheries at Tikehau atoll.Key words: Coral reef fish communities / Diversity decrease / Species richness / Density / Fishing / South Pacific Résumé -Dans de nombreux atolls du Pacifique Sud, une transition a eu lieu en l'espace de deux décennies entre des modes de pêche traditionnels et des techniques plus intensives. La pression de pêche croissante sur les récifs coralliens nécessite des études à long terme pour comprendre les réactions des peuplements de poissons aux changements des pratiques de pêche. L'objectif de cette étude est l'analyse des variations à long terme des peuplements de poissons (en terme de richesse spécifique, diversité, densité et structure) de l'atoll de Tikehau (Tuamotu, Polynésie Française). Les mêmes huit pinacles lagonaires ont été étudiés en 1987 et 2003 à deux profondeurs différentes (6 m et 12 m). Les données quantitatives ont été relevées à l'aide de comptages visuels sous-marins sur des transects de 50 × 5 m. Les analyses ont été réalisées à différentes échelles spatiales (profonde...

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Reef Fish Communities and Fishery Yields of Tikehau Atoll (Tuamotu Archipelago French Polynesia)

Cited by 17 publications

References 0 publications

A Marquesan coral reef (French Polynesia) in historical context: an integrated socio‐ecological approach

A Marquesan coral reef (French Polynesia) in historical context: an integrated socio‐ecological approach

Rapid Reproductive Analysis and Length–Weight Relation for Blacktail Snapper, <I>Lutjanus Fulvus</I> (Actinopterygii: Perciformes: Lutjanidae), from a Remote Village in Papua New Guinea

Long-term spatiotemporal variations in coral-reef fish community structure and fishing at a South Pacific atoll

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