Title
The influence of disturbance on driving carbon stocks and tree dynamics of riparian forests in Cerrado
Date Issued
06 March 2018
Access level
open access
Resource Type
journal article
Author(s)
Universidad Federal de Lavras
Publisher(s)
Oxford University Press
Abstract
Aims Riparian forests in the Brazilian Cerrado, also known as gallery forests, are very heterogeneous in structure, species composition and ecological features due to strong and abrupt variations of soil, hydrological and topographic properties. However, what are the variables driving forest carbon stock and productivity, mortality and recruitment in disturbed gallery forests? Methods We used 36 permanent plots data from a gallery forest in the Brazilian Cerrado. We investigated how tree community dynamics vary in a gallery forest on two contrasting disturbance levels- logged and non-logged-across a topographic gradient intrinsically related to differences in moisture conditions, edge effects, as well as soil fertility and texture. Important Findings Soil variables were reduced into principal components and we used structural equation modelling to disentangle covarying variables. We also included carbon stocks as a determinant variable of dynamics rates. Logged forest had 50% higher productivity than non-logged forest and streamside forest had aboveground carbon stocks 70% higher than the forest edge. Both logging and natural disturbance drove variation in the carbon stocks which contributed to shaping productivity and recruitment rates. Distance from the river also drove mortality and carbon stock rates. Areas with highcarbon stocks favoured higher competition and lessened productivity and recruitment rates. Although soil fertility and texture are considered crucial components shaping forest dynamics, there was no clear influence of those variables on the present forest, probably because the strong effects of soil moisture, forest edge and disturbance disrupted the correlation between soil and forest dynamics.
Start page
401
End page
410
Volume
11
Issue
3
Language
English
OCDE Knowledge area
Ciencia del suelo
Ciencias de las plantas, Botánica
Subjects
Scopus EID
2-s2.0-85043697105
Source
Journal of Plant Ecology
ISSN of the container
17529921
Sources of information:
Directorio de Producción Científica
Scopus