Next Article in Journal
Spatiotemporal Distribution and Driving Factors of Forest Biomass Carbon Storage in China: 1977–2013
Previous Article in Journal
The Vietnamese Legal and Policy Framework for Co-Management in Special-Use Forests
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Forests 2017, 8(7), 257; https://doi.org/10.3390/f8070257

Short-Term Effects of Reduced-Impact Logging on Copaifera spp. (Fabaceae) Regeneration in Eastern Amazon

1
US Forest Service (USDA), Rocky Mountain Research Station, RMRS, 1221 South Main Street, Moscow, ID 83843, USA
2
Department of Forest Sciences, Escola Superior de Agricultura “Luiz de Queiroz”, University of São Paulo, Av. Pádua Dias, 11 Cx. P. 09, Piracicaba CEP 13418-900, Brazil
3
Department of Natural Resources and Society, College of Natural Resources, University of Idaho (UI), 875 Perimeter Drive, Moscow, ID 83843, USA
4
Departamento de Matemática, Escola de Ciências e Tecnologia, Universidade de Évora, Romão Ramalho 59, Évora 7000-671, Portugal
5
Department of Forest Engineering, University of Santa Catarina State-Agroveterinárias Science Center. Av. Luiz de Camões, 2090, Conta Dinheiro, Lages CEP 88520-000, Brazil
*
Author to whom correspondence should be addressed.
Received: 21 June 2017 / Revised: 14 July 2017 / Accepted: 14 July 2017 / Published: 23 July 2017
Full-Text   |   PDF [3640 KB, uploaded 23 July 2017]   |  

Abstract

Timber management directly influences the population dynamics of tree species, like Copaifera spp. (copaíba), which provide oil-resin with ecological and economic importance. The aim of this study was to evaluate the structure and population dynamics of Copaifera in unmanaged and managed stands by reduced-impact logging (RIL) in eastern Amazon in Pará state, Brazil. Based on a stem map of the study area, 40 Copaifera trees were randomly selected, where an equal number of trees were selected in managed and unmanaged stands. A transect of 10 × 100 m was centered at each tree (50 m each side) to assess Copaifera regeneration. Transects were subdivided into ten plots, of which six were systematically chosen to assess the height, diameter and number of Copaifera seedlings and saplings. The field assessment occurred in 2011 and 2013. To estimate the amount of sunlight transmitted to the forest floor, we computed canopy cover from airborne LiDAR data. According to the results, the abundance of Copaifera seedlings/saplings was higher in managed than unmanaged stands. About 5% of Copaifera regeneration was found between 45–50 m from the Copaifera tree while ~73% of regeneration was concentrated within a 10 m radius of the Copaifera tree. We verified that the diameter distribution of Copaifera regeneration was not a negative exponential distribution, as is typical of most tree species in natural forest. Rather, the Copaifera regeneration had a spatially aggregated distribution. In this short-term analysis, the impact of timber management is not negatively affecting the population structure or dynamics of Copaifera regeneration. View Full-Text
Keywords: forest dynamics; natural regeneration; tropical forest; reduced-impact logging; lidar remote sensing forest dynamics; natural regeneration; tropical forest; reduced-impact logging; lidar remote sensing
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Klauberg, C.; Vidal, E.; Silva, C.A.; Hudak, A.T.; Oliveira, M.; Higuchi, P. Short-Term Effects of Reduced-Impact Logging on Copaifera spp. (Fabaceae) Regeneration in Eastern Amazon. Forests 2017, 8, 257.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Forests EISSN 1999-4907 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top