Please use this identifier to cite or link to this item:
Title: Diverse anthropogenic disturbances shift Amazon forests along a structural spectrum
Authors: Smith, Marielle N.
Stark, Scott C.
Taylor, Tyeen C.
Schietti, Juliana
Almeida, Danilo Roberti Alves de
Aragón, Susan
Torralvo, Kelly
Lima, Albertina P.
Oliveira, Gabriel de
Assis, Rafael Leandro de
Leitold, Veronika
Pontes-Lopes, Aline
Scoles, Ricardo
Sousa Vieira, Luciana Cristina de
Resende, Angelica Faria
Coppola, Alysha I.
Brandão, Diego Oliveira
Athaydes Silva Junior, João de
Lobato, Laura F.
Freitas, Wagner
Almeida, Daniel
Souza, Mendell S.
Minor, David M.
Villegas, Juan Camilo
Law, Darin J
Gonçalves, Nathan
Rocha, Daniel Gomes da
Marcelino Carneiro, Guedes
Tonini, Hélio
Silva, Kátia Emídio da
van Haren, Joost
Rosa, Diogo Martins
Valle, Dalton Freitas do
Cordeiro, Carlos Leandro
Lima, Nicolas Zaslavsky de
Shao, Gang
Menor, Imma Oliveras
Conti, Georgina
Florentino, Ana Paula
Montti, Lía
Aragão, Luiz E.O.C.
McMahon, Sean M.
Parker, Geoffrey G.
Breshears, David D.
Costa, Antonio Carlos Lola da
Magnusson, William E.
Mesquita, Rita
Camargo, José Luís C.
Oliveira, Raimundo C. de
Camargo, Plinio B. de
Saleska, Scott R.
Nelson, Bruce Walker
Keywords: climate change
anthropogenic effect
forest canopy
forest ecosystem
human activity
Issue Date: Feb-2023
metadata.dc.publisher.journal: Frontiers in Ecology and the Environment
metadata.dc.relation.ispartof: Volume 21
Abstract: Amazon forests are being degraded by myriad anthropogenic disturbances, altering ecosystem and climate function. We analyzed the effects of a range of land-use and climate-change disturbances on fine-scale canopy structure using a large database of profiling canopy lidar collected from disturbed and mature Amazon forest plots. At most of the disturbed sites, surveys were conducted 10–30 years after disturbance, with many exhibiting signs of recovery. Structural impacts differed in magnitude more than in character among disturbance types, producing a gradient of impacts. Structural changes were highly coordinated in a manner consistent across disturbance types, indicating commonalities in regeneration pathways. At the most severely affected site – burned igapó (seasonally flooded forest) – no signs of canopy regeneration were observed, indicating a sustained alteration of microclimates and consequently greater vulnerability to transitioning to a more open-canopy, savanna-like state. Notably, disturbances rarely shifted forests beyond the natural background of structural variation within mature plots, highlighting the similarities between anthropogenic and natural disturbance regimes, and indicating a degree of resilience among Amazon forests. Studying diverse disturbance types within an integrated analytical framework builds capacity to predict the risk of degradation-driven forest transitions.
ISSN: 15409295
metadata.dc.identifier.doi: 10.1002/fee.2590
Appears in Collections:Artigos

Files in This Item:
File Description SizeFormat 
Diverse anthropogenic disturbances shift Amazon.pdf1,95 MBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons