A5054638164- Pacific and Southeast Asian Studies
- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Plant Diversity and Evolution
- Plant and Fungal Species Descriptions
- Animal Ecology and Behavior Studies
- Biological Control of Invasive Species
- Species Distribution and Climate Change
- Isotope Analysis in Ecology
- African Botany and Ecology Studies
- Plant Parasitism and Resistance
- Marine and coastal plant biology
- Geology and Paleoclimatology Research
- Marine and fisheries research
- Wildlife Ecology and Conservation
- Coral and Marine Ecosystems Studies
- Genetic diversity and population structure
- Fern and Epiphyte Biology
- French Urban and Social Studies
- Marine Ecology and Invasive Species
- Avian ecology and behavior
- Archaeology and ancient environmental studies
- Plant Pathogens and Fungal Diseases
- Zoonotic diseases and public health
- Mollusks and Parasites Studies
University of French Polynesia
2014-2024
Institut Louis Malardé
1999-2023
Gump South Pacific Research Station
2014
Universidade Estadual de Campinas (UNICAMP)
1999
Centre d'Écologie Fonctionnelle et Évolutive
1998
Centre National de la Recherche Scientifique
1998
SUMMARY Invasive alien species (IASs) on islands have broad impacts across biodiversity, agriculture, economy, health and culture, which tend to be stronger than continents. Across small-island developing states (SIDSs), although only a small number of IASs are widely distributed, many more, including those with greatest impact, found islands. Patterns island invasion not consistent SIDS geographic regions, differences attributable correlated patterns in biogeography human development. We...
Abstract Aim We studied how the abundance of highly invasive fruit‐bearing tree Miconia calvescens DC. influences seed dispersal networks and foraging patterns three avian frugivores. Location Tahiti Moorea, French Polynesia. Methods Our study was conducted at six sites which vary in M. . used dietary data from frugivores (two introduced, one endemic) to determine whether fruit consumption are related abundance. constructed for each island evaluate interaction between plants shift invaded...
Islands in the tropical Pacific have a rich and unique biota produced by island biogeographic processes modified recent anthropogenic influences. This has been shaped four overlapping phases: natural colonization dynamics (phase 1), impacts of indigenous 2) non-indigenous 3) settlers, increasing environmental awareness 4). Island ecosystems are resilient to disturbance regimes but highly vulnerable invasive species other human-related influences, due comparatively low alpha diversity,...
The genus Psychotria L. (Rubiaceae) is one of the most diverse in Pacific, including islands French Polynesia with 28 described endemic species. speciosa G. Forst. complex evaluated, and P. lectotypified an epitype designated. new combination trichocalyx (Drake) Fosberg ex J.-Y. Meyer, Lorence & J. Florence, comb. nov., made based on Calycosia (Uragoga) trichocalyx. species paulae sp. to Tahiti (Society Islands), illustrated. It differs from closely related by having leaves longer petioles...
Abstract Ferns are the only major lineage of vascular plants that have nutritionally independent sporophyte (diploid) and gametophyte (haploid) life stages. However, implications this unique cycle for fern community ecology rarely been considered. To compare patterns structure between sporophytes gametophytes, we conducted a survey ferns islands Moorea Tahiti (French Polynesia). We first constructed DNA barcode library (plastid rbcL trnH ‐ psbA ) two island floras including 145 species. then...
Abstract Since 1955 snails of the Euglandina rosea species complex and Platydemus manokwari flatworms were widely introduced in attempted biological control giant African ( Lissachatina fulica ) but have been implicated mass extinction Pacific island snails. We review histories 60 introductions their impacts on L. native 1993 there unofficial releases within groups. Only three official P. took place, new populations are being recorded at an increasing rate, probably because accidental...
ABSTRACT Miconia calvescens DC (Melastomataceae) is a dominant invasive species in the tropical oceanic island of Tahiti (French Polynesia, South Pacific Ocean), where it was introduced as an ornamental plant. Whereas this small tree sparse its native range Central America, has spread into wide variety habitats including wet forests. The remarkable success invasion due great part to prolific reproduction: mature can bear up 220 inflorescences with average 1330 flowers/inflorescence, 208...
ABSTRACT We sampled litter frogs in an 1800‐ha mid‐elevation seasonal forest southeastern Brazil. One hundred 8 * 8‐m plots were during the dry/cold season and wet/warm (unburned areas); we also examined effects of fire recently burned areas. A total 267 (305 g), belonging to 16 species (4 families) caught. single comprised 78.5 percent individuals 54.3 season. The density did not change significantly with season, biomass did. Density positively correlated altitude. Mantel test indicated...
Significance Fossil evidence shows that Polynesians introduced the tropical crop taro ( Colocasia esculenta ) during initial colonization of subtropical South Pacific islands and temperate New Zealand after 1200 CE, establishing garden ecosystems with similar commensal plants invertebrates. Sedimentary charcoal fossil remains indicate how frequent burning perennial cultivation overcame ecological constraints for production, particularly forest cover Zealand. An increase in short-lived...
The land planarian Platydemus manokwari de Beauchamp, 1963 or "New Guinea flatworm" is a highly invasive species, mainly in the Pacific area, and recently Europe (France). We report specimens from six additional countries territories: New Caledonia (including mainland two of Loyalty Islands, Lifou Maré), Wallis Futuna Singapore, Solomon Puerto Rico, Florida, USA. analysed COI gene (barcoding) these with sets primers obtained 909 bp long sequences. In addition, collected Townsville...
The South Pacific Convergence Zone (SPCZ) is a critical region of intense precipitation, particularly during the austral summer (November—March), situated in tropical Ocean. This known to be highly sensitive variations sea surface temperatures (SSTs) across Pacific. Previous research has demonstrated that decadal-scale shifts SPCZ are influenced by SST variability, but our understanding longer-term changes—spanning multi-decadal millennial timescales—remains...
ABSTRACT Most, if not all, alien plant species of the family Acanthaceae (acanths) found in tropical islands were intentionally introduced as garden ornamentals, because their showy coloured flowers, bracts or leaves. Some have ‘escaped’ gardens and naturalized human‐disturbed areas weeds, adventives, ruderal species. A few successfully invaded secondary relatively undisturbed native wet forests. This paper reviews acanths islands, focuses on currently invasive potentially study is based...
Invasive alien species are recognized as a major threat to island biodiversity and ecosystem functions worldwide, with well-documented, detrimental impacts on the native biota of Oceania. Despite their high number rapid increase in Pacific Islands, invasive plants (IAP) have received less attention by researchers, managers, general public compared animals (e.g., predatory mammals). Indeed, although lists IAP natural agroecosystems been set up most countries territories, ecological...
Abstract Aim To reconstruct ecological changes from the fossil record of a unique wetland on tropical oceanic island Tahiti, between 44.5 and 38 cal. kyr bp . Location Vaifanaura'amo'ora, Tamanu Plateau, Punaru'u Valley, Society Islands, French Polynesia (17°38′S, 149°32′50″E). Methods Fossil pollen, spores, seeds, diatoms invertebrates were examined 3.7 m core consisting Pleistocene‐aged algal sediment overlain by late Holocene peat. Results Between 41.5 , Ficus trees, sub‐shrubs including...
ABSTRACT Aim This study investigates the amount and distribution of genetic variation within among populations highly invasive tree, Miconia calvescens (Melastomataceae; hereafter miconia), in tropical island habitats that are differently impacted (distribution spread) by this weed. Location Invasive were included from northern southern Pacific islands including Hawaiian Islands (Hawaii, Kauai Maui), Marquesas (Nuku Hiva), Society (Tahiti, Tahaa, Moorea, Raiatea) New Caledonia. Methods We...
Abstract Aim To explore the potential of genetic processes and mating systems to influence successful plant invasions, we compared diversity highly invasive tropical treelet, Miconia calvescens, in nine populations three native range populations. Specifically, tested how is partitioned invaded regions, which have different invasion histories (multiple vs. single introductions). Lastly, infer levels inbreeding regions impact success. Location Invaded ranges Pacific (Hawaii, Tahiti, New...