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Atoll inland and coastal mangrove climate change vulnerability assessment

Citation

Crameri, NJ and Ellison, JC, Atoll inland and coastal mangrove climate change vulnerability assessment, Wetlands Ecology and Management, 30, (3) pp. 527-546. ISSN 0923-4861 (2022) [Refereed Article]


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DOI: doi:10.1007/s11273-022-09878-0

Abstract

Climate change threatens global mangroves, which are already among the world’s most impacted ecosystems. Vulnerability components of exposure, sensitivity and adaptive capacity were evaluated on mangroves of atoll settings on Jaluit Atoll, in the Marshall Islands, assessing spatial changes of mangrove cover 1945-2018/19, sea-level trends 1968-2019, and reviewing available information. Inland mangrove depressions occur on Jaluit, as well as coastal lagoon margin mangroves, and both were assessed using the same methods. Spatial analysis results showed both inland and coastal mangroves have increased in area. Inland mangroves on eight of Jaluit’s islands mostly expanded after 1976 from 40 to 50 hectares, with progradation and tidal creek infill closing lagoon connections. Shoreline mangroves showed 88-100% of transects prograding 0.1-0.51 m year-1 and 0-11.5% of transects eroding 0-0.18 m year-1. Assessment of a combination of aerial/satellite images, literature and on-the-ground photos indicated that the mangroves are in healthy condition. Vulnerability assessment results showed both inland and coastal mangroves to have similar strengths and weaknesses in resilience, with intrinsic areas of vulnerability persisting during increased future sea level rise, limited sediment supply and extremely low elevations.

Item Details

Item Type:Refereed Article
Keywords:Marshall Islands, climate change, sea level rise, Pacific Islands, resilience, wetlands, inland mangroves
Research Division:Environmental Sciences
Research Group:Environmental management
Research Field:Environmental assessment and monitoring
Objective Division:Environmental Management
Objective Group:Coastal and estuarine systems and management
Objective Field:Assessment and management of coastal and estuarine ecosystems
UTAS Author:Crameri, NJ (Mr Nick Crameri)
UTAS Author:Ellison, JC (Associate Professor Joanna Ellison)
ID Code:150933
Year Published:2022
Deposited By:Geography and Spatial Science
Deposited On:2022-07-06
Last Modified:2022-07-27
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