Seed dispersal of Madagascar's iconic baobab species, Adansonia grandidieri
Rattachement africain : Madagascar, us. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Abstract Certain plant species have traits adapted for seed dispersal by megafauna, which may be absent in their current ranges. Characterizing the dispersal mechanism of such plant species can provide insights about their population dynamics and regeneration. We investigated the effectiveness of the extant fauna as seed dispersers of the Malagasy baobab, Adansonia grandidieri, which have megafaunal dispersal traits. We documented the animal species that interact with its fruits and seeds in the canopy and on the ground through direct observations, camera trapping, opportunistic search of feces with seeds, and dispersal experiments. We also estimated seed fate using a model parameterized with data obtained through experiments on seed removal and seed germination under and away from adult A. grandidieri trees. Further, we examined the impacts of seed dispersal in mitigating herbivore pressures on A. grandidieri seedling through an exclosure experiment. We did not find animals interacting with fruits in the canopy. However, we observed a native rodent species, Eliurus myoxinus, handling fruits/seeds on the ground, and found seeds in bush pig feces. Also, while the rates of germination for the dispersed A. grandidieri seeds were low, their probability of producing viable seedlings was higher than when the seeds stayed under adult trees. We also found that the seedlings of A. grandidieri had a high probability of surviving even when herbivores were present. Overall, our results provide insights into the regeneration of A. grandidieri and suggest that some extant local ground‐dwelling fauna can provide seed dispersal services to this species. Abstract in Malagasy is available with online material.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.
- Titre Crossref
- Seed dispersal of Madagascar's iconic baobab species, <i>Adansonia grandidieri</i>
- Date Crossref
- 10/09/2024
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Antananarivo University of Antananarivo, Madagascar (code pays fourni par la source)Université ou école supérieure
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University of California Department of Integrative Biology pays non établi dans la noticeUniversité ou école supérieure
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Tsimbazaza Zoo Madagascar (code pays fourni par la source)Institution
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Faculté des Sciences Université d'Antananarivo Antananarivo Madagascar Mention Biologie et Ecologie Végétales Antananarivo, Madagascar (pays nommé en fin d’affiliation)Université ou école supérieure
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Department of Botany Parc Botanique et Zoologique de Tsimbazaza Antananarivo Madagascar Antananarivo, Madagascar (pays nommé en fin d’affiliation)Institution
University of Antananarivo (University of Antananarivo, Madagascar), Department of Integrative Biology — University of California et Tsimbazaza Zoo (Madagascar), avec 2 autres affiliations. Pays d’affiliation : Madagascar.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.