Title
Edge effects in recruitment of trees, and relationship to seed dispersal patterns, in cleared strips in the Peruvian Amazon
Date Issued
01 January 2013
Access level
metadata only access
Resource Type
journal article
Author(s)
Gorchov D.L.
Rondon X.J.
Schaefer R.L.
Janosko J.M.
Slutz G.
Publisher(s)
Springer Japan
Abstract
We investigated the spatial pattern of tree recruitment 15 years after clear-cutting in two logged strips in the Peruvian Amazon, focusing on differences between seed dispersal modes and cohorts, and relating these to spatial patterns of seed dispersal in the years immediately following clearing. Most trees that recruited in logged strips belonged to taxa dispersed by birds or nonvolant mammals, with smaller numbers dispersed by bats or wind. Seed dispersal patterns differed, with few mammal-dispersed seeds reaching strips, bird-dispersed seeds more abundant near the forest edge than strip centers, and bat- and wind-dispersed seeds more evenly distributed. However, this pattern was not reflected in the tree recruits, except in the deferment cut half of strip 2. Different dispersal modes were differentially represented in different cohorts; for example, in strip 1 bird-dispersed trees predominated in early cohorts, while trees dispersed by nonvolant mammals predominated in later cohorts. Our finding that trees dispersed by mammals (which disperse the majority of commercial trees in Amazonia) successfully regenerate from seed in the interior of logged strips highlights the value of maintaining these animals in forest management systems. © 2012 The Ecological Society of Japan.
Start page
53
End page
65
Volume
28
Issue
1
Language
English
OCDE Knowledge area
Conservación de la Biodiversidad Ecología
Scopus EID
2-s2.0-84872778619
Source
Ecological Research
ISSN of the container
09123814
Sponsor(s)
Acknowledgments We thank the Instituto de Investigaciones de la Amazonía Peruana for permission to carry out this research at the Centro de Investigaciones Jenaro Herrera and Rodolfo Vásquez of the Missouri Botanical Garden, Nállaret Dávila of the CIJH Herbarium, and César Grandés of the Herbario Amazonense for assistance in identifying voucher specimens. For assistance in the field, we thank Italo Melendez, Margarita Jaramillo, and César Ascorra. A portion of this research was supported by a grant to DLG and FC from USAID’s Program in Science and Technology Cooperation. Statistical analysis of the tree recruitment data was facilitated by students in Data Analysis Practicum Class (STA 660) at Miami University, Fall 2010. Two anonymous reviewers provided useful comments on an earlier draft of this manuscript.
Sources of information: Directorio de Producción Científica Scopus