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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Tropical forest management altered abundances of individual tree species but not diversity

Full text
Author(s):
Naves, Rafaela Pereira [1] ; Grotan, Vidar [2] ; Prado, Paulo Inacio [3] ; Vidal, Edson [1] ; Ferreira Batista, Joao Luis [1]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Dept Ciencias Florestais, Escola Super Agr Luiz de Queiroz, Av Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil
[2] Norwegian Univ Sci & Technol, Ctr Biodivers Dynam, Dept Biol, NO-7491 Trondheim - Norway
[3] Univ Sao Paulo, Inst Biociencias, Dept Ecol, Rua Matao, Tv 14 Butanta, BR-05508090 Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: FOREST ECOLOGY AND MANAGEMENT; v. 475, NOV 1 2020.
Web of Science Citations: 0
Abstract

In this study, we evaluated tree species abundance distribution in a Brazilian Amazon forest following reduced-impact logging and unlogged plots over two decades. A large body of literature shows changes in species abundance distributions (SADs) after disturbances in many systems and suggests that SADs are a useful tool for monitoring community recovery after impacts. We used Poisson lognormal distribution to described SAD, which has sigma and correlation parameters, for comparing species diversity before logging and over time. Sigma is a measure of alpha diversity and correlation expresses similarity between communities. Contrary to our expectations, we detected no changes for sigma, but correlation showed a decreasing trend, particularly after the first decade. Those changes were due to the increase in the abundance of pioneers and little recruitment of commercial species. Mortality was mainly attributed to the accidental death of non-targeted individuals. Because of the dominant role of random accidental tree deaths, the signature of logging operations was not detected immediately after logging using sigma. Forest management did not cause changes in the abundance structure of communities if we disregard species composition. However, considering species composition, and particularly, which species were common or rare, we did detect changes over time. The trends we have detected might be an early warning of a stronger long term tendency, which could affect abundance distributions. Due to the long lifecycle of trees and their slow growth rate, longer-term studies are needed to understand the impacts of logging on tropical forests. (AU)

FAPESP's process: 13/16262-4 - Long-term monitoring of the dynamics of an logging forest conventional and forest management techniques in the Eastern Amazon and its relationship with climate change in forests managed for wood production
Grantee:Edson José Vidal da Silva
Support Opportunities: Regular Research Grants
FAPESP's process: 13/50718-5 - Ecological restoration of riparian forests, native forest of economic production and of degraded forest fragments (in APP and RL) based on restoration ecology of reference ecosystems in order to scientifically test the precepts of the New Brazilian Forest Code
Grantee:Ricardo Ribeiro Rodrigues
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 15/26892-0 - The usage of species abundance distribution to evaluate changes in the diversity of managed tropical forests
Grantee:Rafaela Pereira Naves
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 14/09219-8 - Species abundance distribution modeling to evaluate the forest management in the Amazon Forest
Grantee:Rafaela Pereira Naves
Support Opportunities: Scholarships in Brazil - Doctorate