Consulta: creatorFacets:"Gaucher, Philippe"
Registros recuperados: 3
Data/hora: 03/06/2024 11:11:31

Explosive breeding in tropical anurans: environmental triggers, community composition and acoustic structure
Provedor de dados: 5
Autores: Ulloa, Juan Sebastian; Aubin, Thierry; Llusia, Diego; Courtois, Elodie A.; Fouquet, Antoine; Gaucher, Philippe; Pavoine, Sandrine; Sueur, Jerome.
Background: Anurans largely rely on acoustic communication for sexual selection and reproduction. While multiple studies have focused on the calling activity patterns of prolonged breeding assemblages, species that concentrate their reproduction in short-time windows, explosive breeders, are still largely unknown, probably because of their ephemeral nature. In tropical regions, multiple species of explosive breeders may simultaneously aggregate leading to massive, mixed and dynamic choruses. To understand the environmental triggers, the phenology and composition of these choruses, we collected acoustic and environmental data at five ponds in French Guiana during a rainy season, assessing acoustic communities before and during explosive breeding events....
Tipo: Text
Palavras-chave: Acoustic diversity; Anuran community; Ecoacoustics; Biodiversity monitoring.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00509/62021/66144.pdf

A test of community assembly rules using foliar endophytes from a tropical forest canopy
Provedor de dados: 5
Autores: Donald, Julian; Roy, Mélanie; Suescun, Uxue; Iribar, Amaia; Manzi, Sophie; Péllissier, Léonie; Gaucher, Philippe; Chave, Jérôme.
1.Community assembly theory assumes that ecological communities are spatially delimited into patches. Within these patches, coexistence results from environmental filtering, competition, and immigration. Truly delineated communities exist in laboratory studies of microbial cultures in Petri dishes, yet empirical tests conducted in continuous environments often use patches defined by convention as opposed to realised boundaries. 2.Here we perform a test of ecological community assembly rules using foliar endophyte communities from a tropical rainforest, where leaves are considered as patches for both fungal and bacterial communities. We determined the diversity of fungal and bacterial endophytes using environmental DNA sequencing of 365 top‐canopy leaves,...
Tipo: Text
Palavras-chave: Bacteria; Distribution; French Guiana; Fungi; Metabarcoding; Plant–pathogen interactions; Rainforest.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00606/71808/70296.pdf

Monitoring canopy bird activity in disturbed landscapes with automatic recorders: A case study in the tropics
Provedor de dados: 5
Autores: Ducrettet, Manon; Forget, Pierre-michel; Ulloa, Juan Sebastian; Yguel, Benjamin; Gaucher, Philippe; Prince, Karine; Haupert, Sylvain; Sueur, Jerome.
Tropical forests are facing threats that may affect the dynamics of seed dispersers which participate in the forest regeneration. To implement appropriate conservation programs, it appears necessary to monitor seed dispersers and to estimate their response to local changes. Here, we used non-invasive ecoacoustic methods to monitor the activity of a canopy bird, the White-throated toucan, Ramphastos tucanus, a major seed disperser and flagship species of the Amazonian forest. We deployed nine acoustic recorders over 29 days along a road that connects French Guiana to Brazil. We used template matching to automatically detect the vocalizations of R. tucanus. This method, which can easily be repeated with limited human expertise, detected 1748 recordings with...
Tipo: Text
Palavras-chave: Biodiversity monitoring; Tropical forest; Ecoacoustics; Human activity.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00657/76860/78170.pdf