Local hydrological conditions influence tree diversity and composition across the Amazon basin

Manuel J. Marca-Zevallos; Gabriel M. Moulatlet; Thaiane R. Sousa; Juliana Schietti; Luiz de Souza Coelho; José Ferreira Ramos; Diogenes de Andrade Lima Filho; Iêda Leão Amaral; Francisca Dionízia de Almeida Matos; Lorena M. Rincón; Juan David Cardenas Revilla; Marcelo Petratti Pansonato; Rogério Gribel; Edelcilio Marques Barbosa; Ires Paula de Andrade Miranda; Luiz Carlos de Matos Bonates; Juan Ernesto Guevara; Rafael P. Salomão; Leandro Valle Ferreira; Dário Dantas do Amaral; Nigel C.A. Pitman; Corine Vriesendorp; Tim R. Baker; Roel Brienen; Marcelo de Jesus Veiga Carim; José Renan da Silva Guimarães; Percy Núñez Vargas; Isau Huamantupa-Chuquimaco; William F. Laurance; Susan G.W. Laurance; Ana Andrade; José Luís Camargo; Abel Monteagudo Mendoza; Rodolfo Vasquez; Luis Valenzuela Gamarra; Hugo F. Mogollón; Ben Hur Marimon-Junior; Beatriz S. Marimon; Timothy J. Killeen; Emanuelle de Sousa Farias; David Neill; Marcelo Brilhante de Medeiros; Marcelo Fragomeni Simon; John Terborgh; Juan Carlos Montero; Juan Carlos Licona; Bonifacio Mostacedo; Roosevelt García-Villacorta; Alejandro Araujo-Murakami; Luzmila Arroyo; Daniel Villarroel; Nállarett Dávila; Fernanda Coelho de Souza; Fernanda Antunes Carvalho; James A. Comiskey; Alfonso Alonso; Francisco Dallmeier; Alexandre A. Oliveira; Carolina V. Castilho; Jon Lloyd; Ted R. Feldpausch; Marcos Ríos Paredes; Nicolás Castaño Arboleda; Dairon Cárdenas López; Gerardo A. Aymard Corredor; Anthony Di Fiore; Agustín Rudas; Adriana Prieto; Flávia Rodrigues Barbosa; Janaína Costa Noronha; Domingos de Jesus Rodrigues; Rainiellen de Sá Carpanedo; Eurídice N. Honorio Coronado; Carlos A. Peres; William Milliken; Alfredo Fuentes; J. Sebastián Tello; Carlos Cerón; Bente Klitgaard; Milton Tirado; Rodrigo Sierra; Kenneth R. Young; Gonzalo Francisco Rivas-Torres; Pablo R. Stevenson; Angela Cano; Ophelia Wang; Cláudia Baider; Jos Barlow; Joice Ferreira; Erika Berenguer; Juliana Stropp; Henrik Balslev; Manuel Augusto Ahuite Reategui; Italo Mesones; Elvis H. Valderrama Sandoval; Therany Gonzales; Susamar Pansini; Neidiane Farias Costa Reis; Adeilza Felipe Sampaio; Vincent Antoine Vos; Walter Palacios Cuenca; Angelo Gilberto Manzatto; William Farfan-Rios; Miles R. Silman; Karina Garcia-Cabrera; Patricio von Hildebrand; Marcelino Carneiro Guedes; Janaina Barbosa Pedrosa Costa; Juan Fernando Phillips; César I.A. Vela; José Julio de Toledo; Daniela Pauletto; Fernando Cornejo Valverde; Maria Natalia Umaña; Oliver L. Phillips; William E. Magnusson; Hans ter Steege; Flávia R.C. Costa

doi:10.1111/ecog.06125

Local hydrological conditions influence tree diversity and composition across the Amazon basin

Manuel J. Marca-Zevallos, Gabriel M. Moulatlet, Thaiane R. Sousa, Juliana Schietti, Luiz de Souza Coelho, José Ferreira Ramos, Diogenes de Andrade Lima Filho, Iêda Leão Amaral, Francisca Dionízia de Almeida Matos, Lorena M. Rincón, Juan David Cardenas Revilla, Marcelo Petratti Pansonato, Rogério Gribel, Edelcilio Marques Barbosa, Ires Paula de Andrade Miranda, Luiz Carlos de Matos Bonates, Juan Ernesto Guevara, Rafael P. Salomão, Leandro Valle Ferreira, Dário Dantas do AmaralNigel C.A. Pitman, Corine Vriesendorp, Tim R. Baker, Roel Brienen, Marcelo de Jesus Veiga Carim, José Renan da Silva Guimarães, Percy Núñez Vargas, Isau Huamantupa-Chuquimaco, William F. Laurance, Susan G.W. Laurance, Ana Andrade, José Luís Camargo, Abel Monteagudo Mendoza, Rodolfo Vasquez, Luis Valenzuela Gamarra, Hugo F. Mogollón, Ben Hur Marimon-Junior, Beatriz S. Marimon, Timothy J. Killeen, Emanuelle de Sousa Farias, David Neill, Marcelo Brilhante de Medeiros, Marcelo Fragomeni Simon, John Terborgh, Juan Carlos Montero, Juan Carlos Licona, Bonifacio Mostacedo, Roosevelt García-Villacorta, Alejandro Araujo-Murakami, Luzmila Arroyo, Daniel Villarroel, Nállarett Dávila, Fernanda Coelho de Souza, Fernanda Antunes Carvalho, James A. Comiskey, Alfonso Alonso, Francisco Dallmeier, Alexandre A. Oliveira, Carolina V. Castilho, Jon Lloyd, Ted R. Feldpausch, Marcos Ríos Paredes, Nicolás Castaño Arboleda, Dairon Cárdenas López, Gerardo A. Aymard Corredor, Anthony Di Fiore, Agustín Rudas, Adriana Prieto, Flávia Rodrigues Barbosa, Janaína Costa Noronha, Domingos de Jesus Rodrigues, Rainiellen de Sá Carpanedo, Eurídice N. Honorio Coronado, Carlos A. Peres, William Milliken, Alfredo Fuentes, J. Sebastián Tello, Carlos Cerón, Bente Klitgaard, Milton Tirado, Rodrigo Sierra, Kenneth R. Young, Gonzalo Francisco Rivas-Torres, Pablo R. Stevenson, Angela Cano, Ophelia Wang, Cláudia Baider, Jos Barlow, Joice Ferreira, Erika Berenguer, Juliana Stropp, Henrik Balslev, Manuel Augusto Ahuite Reategui, Italo Mesones, Elvis H. Valderrama Sandoval, Therany Gonzales, Susamar Pansini, Neidiane Farias Costa Reis, Adeilza Felipe Sampaio, Vincent Antoine Vos, Walter Palacios Cuenca, Angelo Gilberto Manzatto, William Farfan-Rios, Miles R. Silman, Karina Garcia-Cabrera, Patricio von Hildebrand, Marcelino Carneiro Guedes, Janaina Barbosa Pedrosa Costa, Juan Fernando Phillips, César I.A. Vela, José Julio de Toledo, Daniela Pauletto, Fernando Cornejo Valverde, Maria Natalia Umaña, Oliver L. Phillips, William E. Magnusson, Hans ter Steege, Flávia R.C. Costa

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Abstract

Tree diversity and composition in Amazonia are known to be strongly determined by the water supplied by precipitation. Nevertheless, within the same climatic regime, water availability is modulated by local topography and soil characteristics (hereafter referred to as local hydrological conditions), varying from saturated and poorly drained to well-drained and potentially dry areas. While these conditions may be expected to influence species distribution, the impacts of local hydrological conditions on tree diversity and composition remain poorly understood at the whole Amazon basin scale. Using a dataset of 443 1-ha non-flooded forest plots distributed across the basin, we investigate how local hydrological conditions influence 1) tree alpha diversity, 2) the community-weighted wood density mean (CWM-wd) – a proxy for hydraulic resistance and 3) tree species composition. We find that the effect of local hydrological conditions on tree diversity depends on climate, being more evident in wetter forests, where diversity increases towards locations with well-drained soils. CWM-wd increased towards better drained soils in Southern and Western Amazonia. Tree species composition changed along local soil hydrological gradients in Central-Eastern, Western and Southern Amazonia, and those changes were correlated with changes in the mean wood density of plots. Our results suggest that local hydrological gradients filter species, influencing the diversity and composition of Amazonian forests. Overall, this study shows that the effect of local hydrological conditions is pervasive, extending over wide Amazonian regions, and reinforces the importance of accounting for local topography and hydrology to better understand the likely response and resilience of forests to increased frequency of extreme climate events and rising temperatures.

Original language	English
Article number	e06125
Journal	Ecography
Volume	2022
Issue number	11
Early online date	13 Sep 2022
DOIs	https://doi.org/10.1111/ecog.06125
Publication status	Published - Nov 2022

Keywords

Amazon basin
HAND
species composition
tree diversity
wood density

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1111/ecog.06125Licence: CC BY

Ecography - 2022 - Marca‐Zevallos - Local hydrological conditions influence tree diversity and composition across theFinal published version, 3.92 MBLicence: CC BY

Cite this

Marca-Zevallos, M. J., Moulatlet, G. M., Sousa, T. R., Schietti, J., Coelho, L. D. S., Ramos, J. F., Lima Filho, D. D. A., Amaral, I. L., de Almeida Matos, F. D., Rincón, L. M., Cardenas Revilla, J. D., Pansonato, M. P., Gribel, R., Barbosa, E. M., Miranda, I. P. D. A., Bonates, L. C. D. M., Guevara, J. E., Salomão, R. P., Ferreira, L. V., ... Costa, F. R. C. (2022). Local hydrological conditions influence tree diversity and composition across the Amazon basin. Ecography, 2022(11), [e06125]. https://doi.org/10.1111/ecog.06125

@article{adf5591b7aae462f8f68dbdbbed7ba3b,

title = "Local hydrological conditions influence tree diversity and composition across the Amazon basin",

abstract = "Tree diversity and composition in Amazonia are known to be strongly determined by the water supplied by precipitation. Nevertheless, within the same climatic regime, water availability is modulated by local topography and soil characteristics (hereafter referred to as local hydrological conditions), varying from saturated and poorly drained to well-drained and potentially dry areas. While these conditions may be expected to influence species distribution, the impacts of local hydrological conditions on tree diversity and composition remain poorly understood at the whole Amazon basin scale. Using a dataset of 443 1-ha non-flooded forest plots distributed across the basin, we investigate how local hydrological conditions influence 1) tree alpha diversity, 2) the community-weighted wood density mean (CWM-wd) – a proxy for hydraulic resistance and 3) tree species composition. We find that the effect of local hydrological conditions on tree diversity depends on climate, being more evident in wetter forests, where diversity increases towards locations with well-drained soils. CWM-wd increased towards better drained soils in Southern and Western Amazonia. Tree species composition changed along local soil hydrological gradients in Central-Eastern, Western and Southern Amazonia, and those changes were correlated with changes in the mean wood density of plots. Our results suggest that local hydrological gradients filter species, influencing the diversity and composition of Amazonian forests. Overall, this study shows that the effect of local hydrological conditions is pervasive, extending over wide Amazonian regions, and reinforces the importance of accounting for local topography and hydrology to better understand the likely response and resilience of forests to increased frequency of extreme climate events and rising temperatures.",

keywords = "Amazon basin, HAND, species composition, tree diversity, wood density",

author = "Marca-Zevallos, {Manuel J.} and Moulatlet, {Gabriel M.} and Sousa, {Thaiane R.} and Juliana Schietti and Coelho, {Luiz de Souza} and Ramos, {Jos{\'e} Ferreira} and {Lima Filho}, {Diogenes de Andrade} and Amaral, {I{\^e}da Le{\~a}o} and {de Almeida Matos}, {Francisca Dion{\'i}zia} and Rinc{\'o}n, {Lorena M.} and {Cardenas Revilla}, {Juan David} and Pansonato, {Marcelo Petratti} and Rog{\'e}rio Gribel and Barbosa, {Edelcilio Marques} and Miranda, {Ires Paula de Andrade} and Bonates, {Luiz Carlos de Matos} and Guevara, {Juan Ernesto} and Salom{\~a}o, {Rafael P.} and Ferreira, {Leandro Valle} and {Dantas do Amaral}, D{\'a}rio and Pitman, {Nigel C.A.} and Corine Vriesendorp and Baker, {Tim R.} and Roel Brienen and Carim, {Marcelo de Jesus Veiga} and Guimar{\~a}es, {Jos{\'e} Renan da Silva} and {N{\'u}{\~n}ez Vargas}, Percy and Isau Huamantupa-Chuquimaco and Laurance, {William F.} and Laurance, {Susan G.W.} and Ana Andrade and Camargo, {Jos{\'e} Lu{\'i}s} and {Monteagudo Mendoza}, Abel and Rodolfo Vasquez and {Valenzuela Gamarra}, Luis and Mogoll{\'o}n, {Hugo F.} and Marimon-Junior, {Ben Hur} and Marimon, {Beatriz S.} and Killeen, {Timothy J.} and Farias, {Emanuelle de Sousa} and David Neill and {de Medeiros}, {Marcelo Brilhante} and Simon, {Marcelo Fragomeni} and John Terborgh and {Carlos Montero}, Juan and Licona, {Juan Carlos} and Bonifacio Mostacedo and Roosevelt Garc{\'i}a-Villacorta and Alejandro Araujo-Murakami and Luzmila Arroyo and Daniel Villarroel and N{\'a}llarett D{\'a}vila and {Coelho de Souza}, Fernanda and Carvalho, {Fernanda Antunes} and Comiskey, {James A.} and Alfonso Alonso and Francisco Dallmeier and Oliveira, {Alexandre A.} and Castilho, {Carolina V.} and Jon Lloyd and Feldpausch, {Ted R.} and {R{\'i}os Paredes}, Marcos and {Casta{\~n}o Arboleda}, Nicol{\'a}s and {C{\'a}rdenas L{\'o}pez}, Dairon and {Aymard Corredor}, {Gerardo A.} and {Di Fiore}, Anthony and Agust{\'i}n Rudas and Adriana Prieto and Barbosa, {Fl{\'a}via Rodrigues} and Noronha, {Jana{\'i}na Costa} and Rodrigues, {Domingos de Jesus} and Carpanedo, {Rainiellen de S{\'a}} and {Honorio Coronado}, {Eur{\'i}dice N.} and Peres, {Carlos A.} and William Milliken and Alfredo Fuentes and Tello, {J. Sebasti{\'a}n} and Carlos Cer{\'o}n and Bente Klitgaard and Milton Tirado and Rodrigo Sierra and Young, {Kenneth R.} and Rivas-Torres, {Gonzalo Francisco} and Stevenson, {Pablo R.} and Angela Cano and Ophelia Wang and Cl{\'a}udia Baider and Jos Barlow and Joice Ferreira and Erika Berenguer and Juliana Stropp and Henrik Balslev and {Ahuite Reategui}, {Manuel Augusto} and Italo Mesones and {Valderrama Sandoval}, {Elvis H.} and Therany Gonzales and Susamar Pansini and Reis, {Neidiane Farias Costa} and Sampaio, {Adeilza Felipe} and Vos, {Vincent Antoine} and {Palacios Cuenca}, Walter and Manzatto, {Angelo Gilberto} and William Farfan-Rios and Silman, {Miles R.} and Karina Garcia-Cabrera and {von Hildebrand}, Patricio and Guedes, {Marcelino Carneiro} and Costa, {Janaina Barbosa Pedrosa} and Phillips, {Juan Fernando} and Vela, {C{\'e}sar I.A.} and {de Toledo}, {Jos{\'e} Julio} and Daniela Pauletto and Valverde, {Fernando Cornejo} and Uma{\~n}a, {Maria Natalia} and Phillips, {Oliver L.} and Magnusson, {William E.} and {ter Steege}, Hans and Costa, {Fl{\'a}via R.C.}",

note = "Funding Information: This work was part of the MSc thesis of the first author developed at the Graduate Program in Ecology of the National Institute of Amazonian Research (INPA). This study was financed in part by the Coordena{\c c}{\~a}o de Aperfei{\c c}oamento de Pessoal de N{\'i}vel Superior – Brasil (CAPES) – Finance Code 001. Gabriel M. Moulatlet acknowledges the postdoctoral grant from the Project SEP‐CONACYT CB‐2017–2018 (grant no. A1‐S‐34563). We thank all ATDN members and field assistants involved for making a very rich database available. We thank Pedro Pequeno and Thiago Cavalcante for helping in data analysis; Camilo Renn{\'o} for support in the handling and interpretation of the HAND data; Bruce Nelson and Davieliton Mesquita for support in the handling and interpretation of climate data and all members of INPA Plant Ecology Laboratory for comments and suggestions. ",

year = "2022",

month = nov,

doi = "10.1111/ecog.06125",

language = "English",

volume = "2022",

journal = "Ecography",

issn = "0906-7590",

publisher = "Wiley",

number = "11",

}

Marca-Zevallos, MJ, Moulatlet, GM, Sousa, TR, Schietti, J, Coelho, LDS, Ramos, JF, Lima Filho, DDA, Amaral, IL, de Almeida Matos, FD, Rincón, LM, Cardenas Revilla, JD, Pansonato, MP, Gribel, R, Barbosa, EM, Miranda, IPDA, Bonates, LCDM, Guevara, JE, Salomão, RP, Ferreira, LV, Dantas do Amaral, D, Pitman, NCA, Vriesendorp, C, Baker, TR, Brienen, R, Carim, MDJV, Guimarães, JRDS, Núñez Vargas, P, Huamantupa-Chuquimaco, I, Laurance, WF, Laurance, SGW, Andrade, A, Camargo, JL, Monteagudo Mendoza, A, Vasquez, R, Valenzuela Gamarra, L, Mogollón, HF, Marimon-Junior, BH, Marimon, BS, Killeen, TJ, Farias, EDS, Neill, D, de Medeiros, MB, Simon, MF, Terborgh, J, Carlos Montero, J, Licona, JC, Mostacedo, B, García-Villacorta, R, Araujo-Murakami, A, Arroyo, L, Villarroel, D, Dávila, N, Coelho de Souza, F, Carvalho, FA, Comiskey, JA, Alonso, A, Dallmeier, F, Oliveira, AA, Castilho, CV, Lloyd, J, Feldpausch, TR, Ríos Paredes, M, Castaño Arboleda, N, Cárdenas López, D, Aymard Corredor, GA, Di Fiore, A, Rudas, A, Prieto, A, Barbosa, FR, Noronha, JC, Rodrigues, DDJ, Carpanedo, RDS, Honorio Coronado, EN, Peres, CA, Milliken, W, Fuentes, A, Tello, JS, Cerón, C, Klitgaard, B, Tirado, M, Sierra, R, Young, KR, Rivas-Torres, GF, Stevenson, PR, Cano, A, Wang, O, Baider, C, Barlow, J, Ferreira, J, Berenguer, E, Stropp, J, Balslev, H, Ahuite Reategui, MA, Mesones, I, Valderrama Sandoval, EH, Gonzales, T, Pansini, S, Reis, NFC, Sampaio, AF, Vos, VA, Palacios Cuenca, W, Manzatto, AG, Farfan-Rios, W, Silman, MR, Garcia-Cabrera, K, von Hildebrand, P, Guedes, MC, Costa, JBP, Phillips, JF, Vela, CIA, de Toledo, JJ, Pauletto, D, Valverde, FC, Umaña, MN, Phillips, OL, Magnusson, WE, ter Steege, H & Costa, FRC 2022, 'Local hydrological conditions influence tree diversity and composition across the Amazon basin', Ecography, vol. 2022, no. 11, e06125. https://doi.org/10.1111/ecog.06125

TY - JOUR

T1 - Local hydrological conditions influence tree diversity and composition across the Amazon basin

AU - Marca-Zevallos, Manuel J.

AU - Moulatlet, Gabriel M.

AU - Sousa, Thaiane R.

AU - Schietti, Juliana

AU - Coelho, Luiz de Souza

AU - Ramos, José Ferreira

AU - Lima Filho, Diogenes de Andrade

AU - Amaral, Iêda Leão

AU - de Almeida Matos, Francisca Dionízia

AU - Rincón, Lorena M.

AU - Cardenas Revilla, Juan David

AU - Pansonato, Marcelo Petratti

AU - Gribel, Rogério

AU - Barbosa, Edelcilio Marques

AU - Miranda, Ires Paula de Andrade

AU - Bonates, Luiz Carlos de Matos

AU - Guevara, Juan Ernesto

AU - Salomão, Rafael P.

AU - Ferreira, Leandro Valle

AU - Dantas do Amaral, Dário

AU - Pitman, Nigel C.A.

AU - Vriesendorp, Corine

AU - Baker, Tim R.

AU - Brienen, Roel

AU - Carim, Marcelo de Jesus Veiga

AU - Guimarães, José Renan da Silva

AU - Núñez Vargas, Percy

AU - Huamantupa-Chuquimaco, Isau

AU - Laurance, William F.

AU - Laurance, Susan G.W.

AU - Andrade, Ana

AU - Camargo, José Luís

AU - Monteagudo Mendoza, Abel

AU - Vasquez, Rodolfo

AU - Valenzuela Gamarra, Luis

AU - Mogollón, Hugo F.

AU - Marimon-Junior, Ben Hur

AU - Marimon, Beatriz S.

AU - Killeen, Timothy J.

AU - Farias, Emanuelle de Sousa

AU - Neill, David

AU - de Medeiros, Marcelo Brilhante

AU - Simon, Marcelo Fragomeni

AU - Terborgh, John

AU - Carlos Montero, Juan

AU - Licona, Juan Carlos

AU - Mostacedo, Bonifacio

AU - García-Villacorta, Roosevelt

AU - Araujo-Murakami, Alejandro

AU - Arroyo, Luzmila

AU - Villarroel, Daniel

AU - Dávila, Nállarett

AU - Coelho de Souza, Fernanda

AU - Carvalho, Fernanda Antunes

AU - Comiskey, James A.

AU - Alonso, Alfonso

AU - Dallmeier, Francisco

AU - Oliveira, Alexandre A.

AU - Castilho, Carolina V.

AU - Lloyd, Jon

AU - Feldpausch, Ted R.

AU - Ríos Paredes, Marcos

AU - Castaño Arboleda, Nicolás

AU - Cárdenas López, Dairon

AU - Aymard Corredor, Gerardo A.

AU - Di Fiore, Anthony

AU - Rudas, Agustín

AU - Prieto, Adriana

AU - Barbosa, Flávia Rodrigues

AU - Noronha, Janaína Costa

AU - Rodrigues, Domingos de Jesus

AU - Carpanedo, Rainiellen de Sá

AU - Honorio Coronado, Eurídice N.

AU - Peres, Carlos A.

AU - Milliken, William

AU - Fuentes, Alfredo

AU - Tello, J. Sebastián

AU - Cerón, Carlos

AU - Klitgaard, Bente

AU - Tirado, Milton

AU - Sierra, Rodrigo

AU - Young, Kenneth R.

AU - Rivas-Torres, Gonzalo Francisco

AU - Stevenson, Pablo R.

AU - Cano, Angela

AU - Wang, Ophelia

AU - Baider, Cláudia

AU - Barlow, Jos

AU - Ferreira, Joice

AU - Berenguer, Erika

AU - Stropp, Juliana

AU - Balslev, Henrik

AU - Ahuite Reategui, Manuel Augusto

AU - Mesones, Italo

AU - Valderrama Sandoval, Elvis H.

AU - Gonzales, Therany

AU - Pansini, Susamar

AU - Reis, Neidiane Farias Costa

AU - Sampaio, Adeilza Felipe

AU - Vos, Vincent Antoine

AU - Palacios Cuenca, Walter

AU - Manzatto, Angelo Gilberto

AU - Farfan-Rios, William

AU - Silman, Miles R.

AU - Garcia-Cabrera, Karina

AU - von Hildebrand, Patricio

AU - Guedes, Marcelino Carneiro

AU - Costa, Janaina Barbosa Pedrosa

AU - Phillips, Juan Fernando

AU - Vela, César I.A.

AU - de Toledo, José Julio

AU - Pauletto, Daniela

AU - Valverde, Fernando Cornejo

AU - Umaña, Maria Natalia

AU - Phillips, Oliver L.

AU - Magnusson, William E.

AU - ter Steege, Hans

AU - Costa, Flávia R.C.

N1 - Funding Information: This work was part of the MSc thesis of the first author developed at the Graduate Program in Ecology of the National Institute of Amazonian Research (INPA). This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001. Gabriel M. Moulatlet acknowledges the postdoctoral grant from the Project SEP‐CONACYT CB‐2017–2018 (grant no. A1‐S‐34563). We thank all ATDN members and field assistants involved for making a very rich database available. We thank Pedro Pequeno and Thiago Cavalcante for helping in data analysis; Camilo Rennó for support in the handling and interpretation of the HAND data; Bruce Nelson and Davieliton Mesquita for support in the handling and interpretation of climate data and all members of INPA Plant Ecology Laboratory for comments and suggestions.

PY - 2022/11

Y1 - 2022/11

N2 - Tree diversity and composition in Amazonia are known to be strongly determined by the water supplied by precipitation. Nevertheless, within the same climatic regime, water availability is modulated by local topography and soil characteristics (hereafter referred to as local hydrological conditions), varying from saturated and poorly drained to well-drained and potentially dry areas. While these conditions may be expected to influence species distribution, the impacts of local hydrological conditions on tree diversity and composition remain poorly understood at the whole Amazon basin scale. Using a dataset of 443 1-ha non-flooded forest plots distributed across the basin, we investigate how local hydrological conditions influence 1) tree alpha diversity, 2) the community-weighted wood density mean (CWM-wd) – a proxy for hydraulic resistance and 3) tree species composition. We find that the effect of local hydrological conditions on tree diversity depends on climate, being more evident in wetter forests, where diversity increases towards locations with well-drained soils. CWM-wd increased towards better drained soils in Southern and Western Amazonia. Tree species composition changed along local soil hydrological gradients in Central-Eastern, Western and Southern Amazonia, and those changes were correlated with changes in the mean wood density of plots. Our results suggest that local hydrological gradients filter species, influencing the diversity and composition of Amazonian forests. Overall, this study shows that the effect of local hydrological conditions is pervasive, extending over wide Amazonian regions, and reinforces the importance of accounting for local topography and hydrology to better understand the likely response and resilience of forests to increased frequency of extreme climate events and rising temperatures.

AB - Tree diversity and composition in Amazonia are known to be strongly determined by the water supplied by precipitation. Nevertheless, within the same climatic regime, water availability is modulated by local topography and soil characteristics (hereafter referred to as local hydrological conditions), varying from saturated and poorly drained to well-drained and potentially dry areas. While these conditions may be expected to influence species distribution, the impacts of local hydrological conditions on tree diversity and composition remain poorly understood at the whole Amazon basin scale. Using a dataset of 443 1-ha non-flooded forest plots distributed across the basin, we investigate how local hydrological conditions influence 1) tree alpha diversity, 2) the community-weighted wood density mean (CWM-wd) – a proxy for hydraulic resistance and 3) tree species composition. We find that the effect of local hydrological conditions on tree diversity depends on climate, being more evident in wetter forests, where diversity increases towards locations with well-drained soils. CWM-wd increased towards better drained soils in Southern and Western Amazonia. Tree species composition changed along local soil hydrological gradients in Central-Eastern, Western and Southern Amazonia, and those changes were correlated with changes in the mean wood density of plots. Our results suggest that local hydrological gradients filter species, influencing the diversity and composition of Amazonian forests. Overall, this study shows that the effect of local hydrological conditions is pervasive, extending over wide Amazonian regions, and reinforces the importance of accounting for local topography and hydrology to better understand the likely response and resilience of forests to increased frequency of extreme climate events and rising temperatures.

KW - Amazon basin

KW - HAND

KW - species composition

KW - tree diversity

KW - wood density

UR - http://www.scopus.com/inward/record.url?scp=85137865788&partnerID=8YFLogxK

U2 - 10.1111/ecog.06125

DO - 10.1111/ecog.06125

M3 - Article

AN - SCOPUS:85137865788

VL - 2022

JO - Ecography

JF - Ecography

SN - 0906-7590

IS - 11

M1 - e06125

ER -

Local hydrological conditions influence tree diversity and composition across the Amazon basin

Abstract

Keywords

UN SDGs

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