Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates

Correa Diego F., Stevenson Pablo R., Umaña Maria Natalia, de Souza Coelho Luiz, de Andrade Lima Filho Diogenes, Salomão Rafael P., do Amaral Iêda Leão, Wittmann Florian, de Almeida Matos Francisca Dionízia, Castilho Carolina V., Phillips Oliver L., Guevara Juan Ernesto, de Jesus Veiga Carim Marcelo, Magnusson William E, Sabatier Daniel, Molino Jean-François, Irume Mariana Victória, Pires Martins Maria, da Silva Guimarães José Renan, Banki Olaf, Fernandez Piedade Maria Teresa, Pitman Nigel C.A., Monteagudo Mendoza Abel L., Ferreira Ramos José, Garcia Luize Bruno, Moraes de Leão Novo Evlyn Márcia, Nuñez Vargas Percy, Freire Silva Thiago Sanna, Venticinque Eduardo Martins, Manzatto Angelo Gilberto, Costa Reis Neidiane Farias, Terborgh John, Casula Katia Regina, Honorio Coronado Eurídice N., Montero Juan Carlos, Schöngart Jochen, Cárdenas López Dairon, Costa Flávia R.C, Costa Quaresma Adriano, Zartman Charles Eugene, Killeen Timothy J., Marimon Beatriz Schwantes, Marimon-Junior Ben Hur, Vasquez Rodolfo, Mostacedo Bonifacio, Demarchi Layon O., Feldpausch Ted R., Assis Rafael L., Baraloto Christopher, Engel Julien, Petronelli Pascal, et al.. 2023. Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates. Global Ecology and Biogeography, 32 (1) : 49-69.

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Géographie-Aménagement-Urbanisme-Architecture

Résumé : Aim: To investigate the geographic patterns and ecological correlates in the geographic distribution of the most common tree dispersal modes in Amazonia (endozoochory, synzoochory, anemochory and hydrochory). We examined if the proportional abundance of these dispersal modes could be explained by the availability of dispersal agents (disperser-availability hypothesis) and/or the availability of resources for constructing zoochorous fruits (resource-availability hypothesis). Time period: Tree-inventory plots established between 1934 and 2019. Major taxa studied: Trees with a diameter at breast height (DBH) ≥ 9.55 cm. Location: Amazonia, here defined as the lowland rain forests of the Amazon River basin and the Guiana Shield. Methods: We assigned dispersal modes to a total of 5433 species and morphospecies within 1877 tree-inventory plots across terra-firme, seasonally flooded, and permanently flooded forests. We investigated geographic patterns in the proportional abundance of dispersal modes. We performed an abundance-weighted mean pairwise distance (MPD) test and fit generalized linear models (GLMs) to explain the geographic distribution of dispersal modes. Results: Anemochory was significantly, positively associated with mean annual wind speed, and hydrochory was significantly higher in flooded forests. Dispersal modes did not consistently show significant associations with the availability of resources for constructing zoochorous fruits. A lower dissimilarity in dispersal modes, resulting from a higher dominance of endozoochory, occurred in terra-firme forests (excluding podzols) compared to flooded forests. Main conclusions: The disperser-availability hypothesis was well supported for abiotic dispersal modes (anemochory and hydrochory). The availability of resources for constructing zoochorous fruits seems an unlikely explanation for the distribution of dispersal modes in Amazonia. The association between frugivores and the proportional abundance of zoochory requires further research, as tree recruitment not only depends on dispersal vectors but also on conditions that favour or limit seedling recruitment across forest types.

Mots-clés Agrovoc : distribution géographique, forêt, forêt tropicale, Podzol, primate, forêt tropicale humide, écosystème forestier, biomasse, biodiversité, changement climatique, dissémination des graines, ressource forestière

Mots-clés géographiques Agrovoc : Amazonie, France, Colombie

Mots-clés libres : Amazonian rain forests, Anemochory, Dispersal agents, Disperser-availability hypothesis, endozoochory, Flooded forests, Hydrochory, Resource-availability hypothesis, Synzoochory, Terra-firme forests

Classification Agris : F70 - Taxonomie végétale et phytogéographie
F40 - Écologie végétale

Champ stratégique Cirad : CTS 5 (2019-) - Territoires

Agences de financement hors UE : Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS), Universidad de los Andes

Auteurs et affiliations

• Correa Diego F., Universidad de los Andes (COL) - auteur correspondant
• Stevenson Pablo R., Universidad de los Andes (COL)
• Umaña Maria Natalia, University of Michigan (USA)
• de Souza Coelho Luiz, INPA (BRA)
• de Andrade Lima Filho Diogenes, INPA (BRA)
• Salomão Rafael P., UFPA (BRA)
• do Amaral Iêda Leão, INPA (BRA)
• Wittmann Florian, Karlsruhe Institute of Technology (DEU)
• de Almeida Matos Francisca Dionízia, INPA (BRA)
• Castilho Carolina V., EMBRAPA (BRA)
• Phillips Oliver L., University of Leeds (GBR)
• Guevara Juan Ernesto, Universidad de las Américas (ECU)
• de Jesus Veiga Carim Marcelo, IEPA (BRA)
• Magnusson William E, INPA (BRA)
• Sabatier Daniel, IRD (FRA)
• Molino Jean-François, IRD (FRA)
• Irume Mariana Victória, INPA (BRA)
• Pires Martins Maria, INPA (BRA)
• da Silva Guimarães José Renan, Amcel Amapá Florestal e Celulose S.A. (BRA)
• Banki Olaf, Naturalis Biodiversity Center (NLD)
• Fernandez Piedade Maria Teresa, INPA (BRA)
• Pitman Nigel C.A., Field Museum of Natural History (USA)
• Monteagudo Mendoza Abel L., Universidad Nacional de San Antonio Abad del Cusco (PER)
• Ferreira Ramos José, INPA (BRA)
• Garcia Luize Bruno, UNICAMP (BRA)
• Moraes de Leão Novo Evlyn Márcia, INPE (BRA)
• Nuñez Vargas Percy, Universidad Nacional San Antonio Abad del Cusco (PER)
• Freire Silva Thiago Sanna, University of Stirling (GBR)
• Venticinque Eduardo Martins, FURG (BRA)
• Manzatto Angelo Gilberto, UNIR (BRA)
• Costa Reis Neidiane Farias, UNIR (BRA)
• Terborgh John, University of Florida (USA)
• Casula Katia Regina, UNIR (BRA)
• Honorio Coronado Eurídice N., IIAP (PER)
• Montero Juan Carlos, INPA (BRA)
• Schöngart Jochen, INPA (BRA)
• Cárdenas López Dairon, Instituto Amazonico de Investigaciones Cientificas SINCHI (COL)
• Costa Flávia R.C, INPA (BRA)
• Costa Quaresma Adriano, INPA (BRA)
• Zartman Charles Eugene, INPA (BRA)
• Killeen Timothy J., Agteca-Amazonica (BOL)
• Marimon Beatriz Schwantes, UNEMAT (BRA)
• Marimon-Junior Ben Hur, UNEMAT (BRA)
• Vasquez Rodolfo, Jardin Botanico de Missouri (PER)
• Mostacedo Bonifacio, UAGRM (BOL)
• Demarchi Layon O., INPA (BRA)
• Feldpausch Ted R., University of Leeds (GBR)
• Assis Rafael L., University of Oslo (NOR)
• Baraloto Christopher, Florida International University (USA)
• Engel Julien, CNRS (FRA)
• Petronelli Pascal, CIRAD-ES-UMR Ecofog (GUF)
• et al.

Source : Cirad-Agritrop (https://agritrop.cirad.fr/608096/)

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