Please Note:

The Open Access Repository will be moving to a new authentication system on the 1st of November.

From this date onwards, account holders will be required to login using their University of Tasmania credentials.
If your current repository username differs from your University username, please email E.Prints@utas.edu.au so we can update these details on your behalf.

Due to the change, there will be a short outage of the repository from 9am on the morning of the 1st of November

Open Access Repository

Assessment of mangrove response to projected relative sea-level rise and recent historical reconstruction of shoreline position

Downloads

Downloads per month over past year

Gilman, E and Ellison, JC and Coleman, R (2007) Assessment of mangrove response to projected relative sea-level rise and recent historical reconstruction of shoreline position. Environmental Monitoring Assessment, 124 (1- 3). pp. 105-130. ISSN 0167-6369

[img] PDF
Gilman_et_al07_...pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.

Abstract

We predict the decadal change in position of
three American Samoa mangroves from analysis of a
time series of remotely sensed imagery, a geographic
information system, tide gauge data, and projections
for change in sea-level relative to the mangrove surface.
Accurate predictions of changes to coastal ecosystem
boundaries, including in response to projected relative
sea-level rise, enable advanced planning to minimize
and offset anticipated losses and minimize social disruption
and cost of reducing threats to coastal development
and human safety. The observed mean landward
migration of three mangroves’ seaward margins
over four decades was 25, 64, and 72mma−1, 12 to
37 times the observed relative sea-level rise rate. Two
of the sites had clear trends in reductions in mangrove
area, where there was a highly significant correlation
between the change in position of the seaward mangrove
margin and change in relative sea-level. Here
it can be inferred that the force of sea-level rise relative
to the mangrove surface is causing landward migration.
Shoreline movement was variable at a third
site and not significantly correlated with changing sealevel,
where it is likely that forces other than change in
relative sea-level are predominant. Currently, 16.5%,23.4%, and 68.0% of the three mangroves’ landward
margins are obstructed by coastal development from
natural landward migration. The three mangroves could
experience as high as a 50.0% reduction in area by
the year 2100. A 12% reduction in mangrove area
by the year 2100 is possible in the Pacific islands
region.

Item Type: Article
Keywords: American Samoa . Coastal . Erosion . Mangrove . Sea-level rise . Wetland
Journal or Publication Title: Environmental Monitoring Assessment
Page Range: pp. 105-130
ISSN: 0167-6369
Identification Number - DOI: 10.1007/s10661-006-9212-y
Additional Information:

The original publication is available at www.springerlink.com

Date Deposited: 28 Jan 2008 23:13
Last Modified: 18 Nov 2014 03:28
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page
TOP