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Vulnerability to climate change of mangroves: assessment from Cameroon, Central Africa

Citation

Ellison, JC and Zouh, I, Vulnerability to climate change of mangroves: assessment from Cameroon, Central Africa, Biology, 1, (3) pp. 617-638. ISSN 2079-7737 (2012) [Refereed Article]


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Copyright Statement

Licenced under the Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/

Official URL: http://www.mdpi.com/journal/biology

DOI: doi:10.3390/biology1030617

Abstract

Intertidal mangrove ecosystems are sensitive to climate change impacts, particularly to associated relative sea level rise. Human stressors and low tidal range add to vulnerability, both characteristics of the Doula Estuary, Cameroon. To investigate vulnerability, spatial techniques were combined with ground surveys to map distributions of mangrove zones, and compare with historical spatial records to quantify change over the last few decades. Low technology techniques were used to establish the tidal range and relative elevation of the mapped mangrove area. Stratigraphic coring and palaeobiological reconstruction were used to show the longer term biological history of mangroves and net sedimentation rate, and oral history surveys of local communities were used to provide evidence of recent change and identify possible causes. Results showed that the seaward edge of mangroves had over two thirds of the shoreline experienced dieback at up to 3 m per year over the last three decades, and an offshore mangrove island had suffered 89% loss. Results also showed low net sedimentation rates under seaward edge mangroves, and restricted intertidal elevation habitats of all mangroves, and Avicennia and Laguncularia in particular. To reduce vulnerability, adaptation planning can be improved by reducing the non-climate stressors on the mangrove area, particularly those resulting from human impacts. Other priorities for adaptation planning in mangrove areas that are located in such low tidal range regions are to plan inland migration areas and strategic protected areas for mangroves, and to undertake management activities that enhance accretion within the mangroves.

Item Details

Item Type:Refereed Article
Research Division:Environmental Sciences
Research Group:Environmental Science and Management
Research Field:Environmental Science and Management not elsewhere classified
Objective Division:Manufacturing
Objective Group:Wood, Wood Products and Paper
Objective Field:Pulp and Paper
Author:Ellison, JC (Dr Joanna Ellison)
ID Code:81149
Year Published:2012
Deposited By:Geography and Environmental Studies
Deposited On:2012-11-23
Last Modified:2018-02-08
Downloads:293 View Download Statistics

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