Resource availability and disturbance shape maximum tree height across the Amazon

Autor(es):Mostrar menos -

Gorgens, Eric B. ^[1] ; Nunes, Matheus H. ^[2] ; Jackson, Tobias ^[3] ; Coomes, David ^[3] ; Keller, Michael ^[4] ; Reis, Cristiano R. ^[5] ; Valbuena, Ruben ^[6] ; Rosette, Jacqueline ^[7] ; de Almeida, Danilo R. A. ^[5] ; Gimenez, Bruno ^[8] ; Cantinho, Roberta ^[9] ; Motta, Alline Z. ^[10] ; Assis, Mauro ^[11] ; de Souza Pereira, Francisca R. ^[11] ; Spanner, Gustavo ^[12] ; Higuchi, Niro ^[12] ; Ometto, Jean Pierre ^[11]

Afiliação do(s) autor(es):Mostrar menos -

^[1] Univ Fed Vales Jequitinhonha & Mucuri, Dept Engn Florestal, Campus JK, Rodovia MGT 367, Km 583, 5-000, BR-39100000 Diamantina, MG - Brazil

^[2] Univ Helsinki, Helsinki - Finland

^[3] Univ Cambridge, Cambridge - England

^[4] US Forest Serv, Washington, DC - USA

^[5] Univ Sao Paulo, Piracicaba, SP - Brazil

^[6] Bangor Univ, Bangor, Gwynedd - Wales

^[7] Swansea Univ, Swansea, W Glam - Wales

^[8] Smithsonian Trop Res Inst, Panama City - Panama

^[9] Univ Brasilia, Brasilia, DF - Brazil

^[10] Univ Fed Vales Jequitinhonha & Mucuri, Dept Engn Florestal, Diamantina, MG - Brazil

^[11] Inst Nacl Pesquisas Espaciais, Sao Jose Dos Campos, SP - Brazil

^[12] Inst Nacl de Pesquisas da Amazonia, Manaus, AM - Brazil

• Tipo de documento: Artigo Científico
• Fonte: GLOBAL CHANGE BIOLOGY; v. 27, n. 1 NOV 2020.
• Citações Web of Science: 0

Resumo

Tall trees are key drivers of ecosystem processes in tropical forest, but the controls on the distribution of the very tallest trees remain poorly understood. The recent discovery of grove of giant trees over 80 meters tall in the Amazon forest requires a reevaluation of current thinking. We used high-resolution airborne laser surveys to measure canopy height across 282,750 ha of old-growth and second-growth forests randomly sampling the entire Brazilian Amazon. We investigated how resources and disturbances shape the maximum height distribution across the Brazilian Amazon through the relations between the occurrence of giant trees and environmental factors. Common drivers of height development are fundamentally different from those influencing the occurrence of giant trees. We found that changes in wind and light availability drive giant tree distribution as much as precipitation and temperature, together shaping the forest structure of the Brazilian Amazon. The location of giant trees should be carefully considered by policymakers when identifying important hot spots for the conservation of biodiversity in the Amazon. (AU)

• Processo FAPESP: 19/14697-0 - Monitoramento da demografia e diversidade de florestas em processo de restauração usando um sistema drone-lidar-hiperespectral
• Beneficiário: Danilo Roberti Alves de Almeida
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 18/21338-3 - Monitoramento da restauração de paisagens florestais usando veículo aéreo não tripulado com sensoriamento remoto Lidar e hiperespectral
• Beneficiário: Danilo Roberti Alves de Almeida
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado