Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates
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Correa, Diego, F. | Stevenson, Pablo, R | Umaña, Maria, Natalia | Coelho, Luiz, de Souza | Lima Filho, Diógenes, de Andrade | Salomão, Rafael, P | Amaral, Iêda, Leão Do | Wittmann, Florian | Matos, Francisca, Dionízia de Almeida | Castilho, Carolina, V | Phillips, Oliver, L | Guevara, Juan, Ernesto | Carim, Marcelo, de Jesus Veiga | Magnusson, William, E | Sabatier, Daniel | Molino, Jean-François | Irume, Mariana, Victória | Martins, Maria, Pires | Guimarães, José, Renan da Silva | Bánki, Olaf, S | Piedade, Maria, Teresa Fernandez | Pitman, Nigel, C A | Monteagudo Mendoza, Abel | Ramos, José, Ferreira | Luize, Bruno, Garcia | Novo, Evlyn, Márcia Moraes de Leão | Núñez Vargas, Percy | Silva, Thiago, Sanna Freire | Venticinque, Eduardo, Martins | Manzatto, Angelo, Gilberto | Reis, Neidiane, Farias Costa | Terborgh, John, W | Casula, Katia, Regina | Honorio Coronado, Euridice, N | Montero, Juan, Carlos | Schöngart, Jochen | Cárdenas López, Dairon | Costa, Flávia, R C | Quaresma, Adriano, Costa | Zartman, Charles, Eugene | Killeen, Timothy, J | Marimon, Beatriz, S | Marimon‐junior, Ben, Hur | Vasquez, Rodolfo | Mostacedo, Bonifacio | Demarchi, Layon, O | Feldpausch, Ted, R | Assis, Rafael, L | Baraloto, Christopher | Engel, Julien | Petronelli, Pascal | Castellanos, Hernán | Medeiros, Marcelo, Brilhante De | Simon, Marcelo, Fragomeni | Andrade, Ana | Camargo, José, Luís | Laurance, Susan, G W | Laurance, William, F | Maniguaje Rincón, Lorena | Schietti, Juliana | Sousa, Thaiane, R | Farias, Emanuelle, de Sousa | Lopes, Maria, Aparecida | Magalhães, José, Leonardo Lima | Nascimento, Henrique, Eduardo Mendonça | Queiroz, Helder, Lima De | Aymard C, Gerardo, A | Brienen, Roel | Cardenas Revilla, Juan, David | Vieira, Ima, Célia Guimarães | Cintra, Bruno, Barçante Ladvocat | Feitosa, Yuri, Oliveira | Duivenvoorden, Joost, F | Mogollón, Hugo, F | Araujo‐murakami, Alejandro | Ferreira, Leandro, Valle | Lozada, José, Rafael | Comiskey, James, A | de Toledo, José, Julio | Damasco, Gabriel | Dávila, Nállarett | García‐villacorta, Roosevelt | Lopes, Aline | Vicentini, Alberto | Draper, Freddie, C | Castaño Arboleda, Nicolás | Cornejo Valverde, Fernando | Alonso, Alfonso | Dallmeier, Francisco | Gomes, Vitor, H F | Neill, David | de Aguiar, Daniel, P P | Arroyo, Luzmila | Carvalho, Fernanda, Antunes | de Souza, Fernanda, Coelho | Amaral, Dário, Dantas Do | Feeley, Kenneth, J | Gribel, Rogerio | Pansonato, Marcelo, Petratti | Barlow, Jos | Berenguer, Erika | Ferreira, Joice | Fine, Paul, V A | Guedes, Marcelino, Carneiro | Jimenez, Eliana, M | Licona, Juan, Carlos | Peñuela Mora, Maria, Cristina | Villa Zegarra, Boris, Eduardo | Cerón, Carlos | Fonty, Émile | Henkel, Terry, W | Householder, John, Ethan | Maas, Paul | Silveira, Marcos | Stropp, Juliana | Thomas, Raquel | Durgante, Flávia, Machado | Baker, Tim, R | Daly, Doug | Huamantupa‐chuquimaco, Isau | Milliken, William | Pennington, Toby | Ríos Paredes, Marcos | Molina, Pardo | Fuentes, Alfredo | Klitgaard, Bente | Marcelo Peña, José, Luis | Peres, Carlos, A | Silman, Miles, R | Tello, J, Sebastián | Campelo, Wegliane | Chave, Jerome | Di Fiore, Anthony | Hilário, Renato, Richard | Phillips, Juan, Fernando | Rivas‐torres, Gonzalo | van Andel, Tinde, R | von Hildebrand, Patricio | Pereira, Luciana, de Oliveira | Barbosa, Edelcilio, Marques | Barbosa, Flávia, Rodrigues | Bonates, Luiz, Carlos de Matos | Carpanedo, Rainiellen, de Sá | Dávila Doza, Hilda, Paulette | Zárate Gómez, Ricardo | Gonzales, Therany | Gallardo Gonzales, George, Pepe | Hoffman, Bruce | Junqueira, André, Braga | Malhi, Yadvinder | Miranda, Ires, Paula de Andrade | Mozombite Pinto, Linder, Felipe | Prieto, Adriana | Rodrigues, Domingos, de Jesus | Rudas, Agustín | Ruschel, Ademir, R | Silva, Natalino | Vela, César, I A | Vos, Vincent, Antoine | Zent, Stanford | Zent, Egleé, L | Noronha, Janaína, Costa | Albuquerque, Bianca, Weiss | Cano, Angela | Carrero Márquez, Yrma, Andreina | Costa, Janaina, Barbosa Pedrosa | Flores, Bernardo, Monteiro | Galbraith, David | Holmgren, Milena | Kalamandeen, Michelle | Nascimento, Marcelo, Trindade | Oliveira, Alexandre, A | Ramirez‐angulo, Hirma | Rocha, Maira | Scudeller, Veridiana, Vizoni | Sierra, Rodrigo | Tirado, Milton | van der Heijden, Geertje | Vilanova Torre, Emilio | Vriesendorp, Corine | Pombo, Maihyra, Marina | Ahuite Reategui, Manuel, Augusto | Baider, Cláudia | Balslev, Henrik | Cárdenas, Sasha | Casas, Luisa, Fernanda | Farfan‐rios, William | Ferreira, Cid | Linares‐palomino, Reynaldo | Mendoza, Casimiro | Mesones, Italo | Torres‐lezama, Armando | Urrego Giraldo, Ligia, Estela | Villarroel, Daniel | Zagt, Roderick | Parada, Germaine, Alexander | Alexiades, Miguel, N | de Oliveira, Edmar, Almeida | Garcia‐cabrera, Karina | Hernandez, Lionel | Palacios Cuenca, Walter | Pansini, Susamar | Pauletto, Daniela | Ramirez Arevalo, Freddy | Sampaio, Adeilza, Felipe | Valderrama Sandoval, Elvis, H | Valenzuela Gamarra, Luis | ter Steege, Hans
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International audience.
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.
