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	Provedor de dados ArchiMer (3) Autor Baidai, Yannick (3) Capello, Manuela (2) Dagorn, Laurent (2) Gaertner, Daniel (2) Adahe, Léontine (1) Amande, Mj (1) Denebourg, Jean-louis (1) Dimobe, Kangbéni (1) Duparc, Antoine (1) Floch, Laurent (1) Forkuor, Gerald (1) Guéi, Arnauth M. (1) N'Dri, Julien K. (1) Tondoh, Jérôme E. (1) Mais... Palavra-chave Abundance (1) Abundance Index (1) Associative behavior (1) Biodiversity (1) Drifting fish aggregating devices (FAD) (1) Earthworms (1) Echosounders (1) FADs (1) Functional groups (1) Land use change (1) Rubber tree plantations (1) Soil degradation (1) Soil threats (1) Tropical tunas (1) Yellowfin tuna (1) Mais... Tipo do documento Text (3) Ano 2021 (1) 2019 (2) País France (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Mapping tuna occurrence under drifting fish aggregating devices from Fisher’s Echosounder buoys in Indian Ocean ArchiMer Baidai, Yannick; Dagorn, Laurent; Amande, Mj; Gaertner, Daniel; Capello, Manuela. Echosounder buoys data obtained from instrumented drifting FADs represent an unprecedented source of information for assessing the spatio-temporal distribution of tropical tuna. Using machine learning algorithms, we transformed acoustic data collected from one of the main echosounder buoys models used by the French purse seine fleet (M3I) into presence/absence of tuna aggregations, enabling the measurement of the amount of inhabited FADs on a given spatiotemporal strata. This paper presents the spatial and temporal distribution of the proportion of drifting fish aggregating devices (DFADs) occupied by tuna aggregations relative to the total number of FADs in the Indian Ocean on a monthly basis, on a 5° grid for year 2016. The perspectives opened up by this... Tipo: Text Palavras-chave: Echosounders; Drifting fish aggregating devices (FAD); Tropical tunas; Abundance. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00592/70454/68576.pdf Soil Health Changes Over a 25-Year Chronosequence From Forest to Plantations in Rubber Tree (Hevea brasiliensis) Landscapes in Southern Côte d'Ivoire: Do Earthworms Play a Role? ArchiMer Tondoh, Jérôme E.; Dimobe, Kangbéni; Guéi, Arnauth M.; Adahe, Léontine; Baidai, Yannick; N'Dri, Julien K.; Forkuor, Gerald. The agro-ecological drawbacks of the spread of rubber tree plantations in Côte d'Ivoire since the 1990's are obvious even though they have not been properly investigated. They consist of biodiversity loss, land degradation and food insecurity, which have extended into the existing cocoa-led degraded areas whose rehabilitation have unfortunately not started. This situation increases not only the threat on soil health status but also undermines the capability of soils to deliver ecosystem services that are key to sustainable agricultural production. The current study took advantage of a chronosequence in rubber tree landscapes to assess soil health deterioration in general and possibly earthworm-mediated role in soil health changes. The hypothesis... Tipo: Text Palavras-chave: Biodiversity; Earthworms; Functional groups; Land use change; Soil degradation; Soil threats; Rubber tree plantations. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00504/61555/65462.pdf Associative Behavior-Based abundance Index (ABBI) for yellowfin tuna (Thunnus albacares) in the Western Indian Ocean ArchiMer Baidai, Yannick; Dagorn, Laurent; Gaertner, Daniel; Denebourg, Jean-louis; Duparc, Antoine; Floch, Laurent; Capello, Manuela. This paper presents an associative behavior-based abundance index (ABBI) providing direct estimates of the abundance of yellowfin tuna (Thunnus albacares) based on their associative behavior around floating objects (FOBs). Considering the associative dynamics of small yellowfin tuna individuals (<10 kg) at FOBs through residence and absence times at FOBs, together with acoustic data obtained from fisher’s echosounder buoys, the ABBI index is derived for yellowfin tuna in the western Indian Ocean over the period 2013-2019. This index accounts for both the FOB-associated and free-swimming components of the tuna populations, as well as for the effects of increasing numbers of FOBs on each component. Tipo: Text Palavras-chave: Abundance Index; Associative behavior; FADs; Yellowfin tuna. Ano: 2021 URL: https://archimer.ifremer.fr/doc/00693/80507/83718.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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