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A tropical freshwater wetlands: I. Structure, growth, and regeneration

Wetlands Ecology and Management

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Abstract

Forested wetlands dominated by Terminalia carolinensis are endemic to Micronesia but common only on the island of Kosrae, Federated States of Micronesia. On Kosrae, these forests occur on Nansepsep, Inkosr, and Sonahnpil soil types, which differ in degree of flooding and soil saturation. We compared forest structure, growth, nutrition, and regeneration on two sites each on Nansepsep and Inkosr soils and one site on the much less common Sonahnpil soil type. Terminalia tree sizes were similar on all three soil types, but forests differed in total basal area, species of smaller trees, and total plant species diversity. Terminalia regeneration was found only on the Inkosr soil type, which had the highest water table levels. Other Terminalia species are relatively light demanding, and T. carolinensis exhibited similar characteristics. It is therefore likely that Terminalia requires periodic, but perhaps naturally rare, stand-replacing disturbances (e.g., typhoons) in order to maintain its dominanace, except on the wettest sites, where competition from other species is reduced. Terminalia swamps in the Nansepsep soil type appeared to be at the greatest risk of conversion to other uses, but swamps on all three types may face reater pressure as Kosrae's population increases and the island's infrastrucure becomes more developed.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
A tropical freshwater wetlands: I. Structure, growth, and regeneration
Series title:
Wetlands Ecology and Management
Volume
13
Issue:
6
Year Published:
2005
Language:
English
Contributing office(s):
National Wetlands Research Center
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Wetlands Ecology and Management
First page:
657
Last page:
669
Number of Pages:
13