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Restauration des îlots de Wallis - Rapport de mission préliminaire
Biodiversity Conservation, BRB
Available Online

Griffiths, Richard (Island Conservation)

,

des Monstiers, Baudouin (Island Conservation)

2019
Afin de protéger la biodiversité terrestre et marine et de préserver les conditions de vie de la population Wallisienne, il est proposé d’enlever les vertébrés envahissants des îlots situés dans le lagon de Wallis. Dans cette optique, le personnel d'Island Conservation a travaillé conjointement avec celui du Service Territorial de l’Environnement de Wallis et Futuna au cours des mois de Septembre et Octobre 2019 pour entamer le travail de consultation et mieux comprendre les conditions nécessaires à la réussite d’un tel projet. Un panel de vertébrés introduits comprenant des rats, des chats et des cochons est présent sur l’ensemble des îlots du lagon de Wallis, sauf un. Ces espèces constituent une menace permanente pour les plantes et les animaux indigènes des îles et perturbent les processus écosystémiques responsables de la régénération des forêts indigènes et du bon état de santé des récifs. Différentes consultations avec les parties prenantes majeures ont été entreprises et tous les îlots ont été visités et expertisés. Aucun obstacle insurmontable au retrait des espèces envahissantes n'a été identifié et leur éradication est considérée comme réalisable. Une partie des îlots pourrait être traitée manuellement depuis le sol, tandis que les îlots présentant une topographie plus complexe nécessiteraient l'utilisation d’un moyen aérien de type drone pour épandre les appâts contenant le raticide. Préalablement au retrait des rats et des chats, les cochons devront être retirés des îlots où ils sont présents (stratégie présentée au sein de ce document). Des consultations plus approfondies sont essentielles pour fédérer un soutien du public au projet et pouvoir identifier les obstacles à résoudre avant de procéder à l'éradication. Les îlots de Wallis sont régulièrement visités et utilisés par la population. Par conséquent, d’importants efforts et un soutien de la part de la communauté Wallisienne seront nécessaires pour empêcher des réinvasions et assurer la pérennité des bénéfices du projet. Ce projet représente une véritable opportunité pour Wallis de protéger ses ressources naturelles et de développer sa capacité à gérer les problèmes liés aux espèces envahissantes.
Sisi returns
Biodiversity Conservation
Available Online
Freedivers harvest thousands of sea turtles a year in the Solomon Islands
Biodiversity Conservation
Available Online

Hamilton, Richard

2023
1. Sea turtles are harvested in many small-scale fisheries (SSFs), but few nations have quantified the impacts that SSFs are having on their sea turtle stocks. This study provides the first assessment on the catch composition, national harvest rates,and long-term trends in sea turtle catches in the Solomon Islands SSFs. 2. Between October 2016 and May 2018, 10 community monitors located in eight of the nine provinces of the Solomon Islands were trained and employed to work alongside fishers in their respective communities to document, photograph, and geo-reference the reefs where sea turtles were harvested. Local ecological knowledge (LEK) surveys were then conducted with 32 experienced fishers to infer whether the harvest rates of sea turtles had changed in recent decades. 3. Community monitors recorded information on 1,132 sea turtles that were harvested on 529 fishing trips:1,119 sea turtles were identified to species level, with harvests consisting of 73.3% (n=818) green sea turtles (Chelonia mydas), 25.7% hawksbill sea turtles (n=291) (Eretmochelys imbricata), and 0.9% (n=10) olive ridley sea turtles (Lepidochelys olivacea). 4. The great majority (92.6%) of sea turtles were captured by night-time and daytime freedivers who use masks, snorkels, fins, hooks, spears, and underwater flashlights to target a wide range of fauna that inhabit coral reefs.
Non-random mating within an Island Rookery of Hawaiian Hawksbill Turtles: demographic discontinuity at a small Coastline scale
Biodiversity Conservation
Available Online

Dutton, Peter H

,

Frey, Amy

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Gaos, Alexander R.

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Horne, John B.

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Martin, Summer

2023
Hawksbill sea turtles (Eretmochelys imbricata) from the Hawaiian archipelago form a small and genetically isolated population, consisting of only a few tens of individuals breeding annually. Most females nest on the island of Hawai’i, but little is known about the demographics of this rookery. This study used genetic relatedness, inferred from 135 microhaplotype markers, to determine breeding sex-ratios, estimate female nesting frequency and assess relationships between individuals nesting on different beaches.
Destination Revealed: Post-Nesting Migrations of Hawksbill Turtles (Eretmochelys imbricata) from Moso Island, Republic of Vanuatu.
Biodiversity Conservation
Available Online

Balazs, George H.

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Hickey, Francis R.

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Jim, Laura M. R

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Rice, Marc R.

2022
Hawksbill turtle (Eretmochelys imbricata) nesting populations and behaviors in the Republic of Vanuatu are poorly understood. In an effort to evaluate their internesting home range, post-nesting migration and foraging habitat home ranges, 7 post-nesting hawksbill turtles were satellite tagged at Moso Island, Republic of Vanuatu between January 2018 and January 2020. The mean internesting home ranges of two turtles was 0.8 km2 proximal to their nesting beach indicating possible value in establishing a marine protected area along the north coast of Moso Island during the nesting season. The Great Barrier Reef, Australia and New Caledonia were the two major post-nesting destinations. Hawksbill turtles are legally protected by law in both countries. Foraging home ranges for 4 hawksbill turtles in New Caledonia and Aneityum Island, Vanuatu ranged from 1.7 to 28.9 km2. It will be important to continue this study to better determine the total area of habitat utilization of the internesting hawksbills at Moso Island in order to facilitate the implementation of community-based conservation measures and to illuminate home range location and size.
Rapid Biodiversity Assessment (BIORAP) Vava'u Group - Kingdom of Tonga (February 2014) - Synthesis Report : Key findings and recommendations
SPREP Publications, Biodiversity Conservation, BRB
Available Online

SPREP

2014
A BIORAP is a biological inventory programme undertaken in marine and terrestrial environments, and is designed to rapidly assess the biodiversity of highly diverse areas. Options to manage threats and protect biodiversity of national or international significance are recommended to governing communities.
Australian hawksbill turtle population dynamics project
Biodiversity Conservation
Available Online

Limpus Colin. J.

,

Miller Jeffrey D.

2008
Cheloniid turtles are characterised by a complicated life history: their eggs are laid on warm beaches; hatchling sex is determined temperature dependent sex determination during embryonic development; lack of parental care; hatchlings are imprinted to the natal area; hatchlings disperse to feed on plankton in the pelagic environments followed by inshore recruitment to feed on benthic organisms; immature turtles have slow growth and delayed maturation; adults migrate to breed in their respective natal area; they lay multiple clutches in a breeding season but dot normally breed annually; adults display high fidelity to both their respective breeding and the feeding areas and have an extended adult life (Hirth. 1997).
What can be done to restore Pacific turtle populations? The Bellagio blueprint for Action on Pacific Sea turtles
Biodiversity Conservation
Available Online
2004
The Pacific Ocean is the habitat of 5 species of widely distributed sea turtles and one restricted to Australian waters that evolved nearly 30 millions of years ago. All species are long-lived and clow growing, they take form 10 to 30 years to reach maturity and exhibit complex life cycles involving eggs laid in nests on tropical beaches natal homing and extraordinary feeding and breeding migrations that can span the entire Pacific Ocean. Sea turtle populations are slow to increase and replace themselves.

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