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Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates
- Publication Year :
- 2023
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Abstract
- 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 req
Details
- Database :
- OAIster
- Notes :
- Correa, Diego F. and Stevenson, Pablo R. and Umaña, Maria Natalia and Coelho, Luiz de Souza and Lima Filho, Diógenes de Andrade and Salomão, Rafael P. and Amaral, Iêda Leão do and Wittmann, Florian and Matos, Francisca Dionízia de Almeida and Castilho, Carolina V. and Phillips, Oliver L. and Guevara, Juan Ernesto and Carim, Marcelo de Jesus Veiga and Magnusson, William E. and Sabatier, Daniel and Molino, Jean‐François and Irume, Mariana Victória and Martins, Maria Pires and Guimarães, José Renan da Silva and Bánki, Olaf S. and Piedade, Maria Teresa Fernandez and Pitman, Nigel C. A. and Monteagudo Mendoza, Abel and Ramos, José Ferreira and Luize, Bruno Garcia and Novo, Evlyn Márcia Moraes de Leão and Núñez Vargas, Percy and Silva, Thiago Sanna Freire and Venticinque, Eduardo Martins and Manzatto, Angelo Gilberto and Reis, Neidiane Farias Costa and Terborgh, John W. and Casula, Katia Regina and Honorio Coronado, Euridice N. and Montero, Juan Carlos and Schöngart, Jochen and Cárdenas López, Dairon and Costa, Flávia R. C. and Quaresma, Adriano Costa and Zartman, Charles Eugene and Killeen, Timothy J. and Marimon, Beatriz S. and Marimon‐Junior, Ben Hur and Vasquez, Rodolfo and Mostacedo, Bonifacio and Demarchi, Layon O. and Feldpausch, Ted R. and Assis, Rafael L. and Baraloto, Christopher and Engel, Julien and Petronelli, Pascal and Castellanos, Hernán and Medeiros, Marcelo Brilhante de and Simon, Marcelo Fragomeni and Andrade, Ana and Camargo, José Luís and Laurance, Susan G. W. and Laurance, William F. and Maniguaje Rincón, Lorena and Schietti, Juliana and Sousa, Thaiane R. and Farias, Emanuelle de Sousa and Lopes, Maria Aparecida and Magalhães, José Leonardo Lima and Nascimento, Henrique Eduardo Mendonça and Queiroz, Helder Lima de and Aymard C., Gerardo A. and Brienen, Roel and Cardenas Revilla, Juan David and Vieira, Ima Célia Guimarães and Cintra, Bruno Barçante Ladvocat and Feitosa, Yuri Oliveira and Duivenvoorden, Joost F. and Mogollón, Hugo F. and Araujo‐Murakam
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1372235731
- Document Type :
- Electronic Resource