Predicted effects of climate change and sea level rise on water table levels and dune slack habitats


Clarke, D. (2008) Predicted effects of climate change and sea level rise on water table levels and dune slack habitats. In, Changing Perspectives in Coast Dune Management, Liverpool, UK, 31 Mar - 03 Apr 2008.

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Description/Abstract

Slack floors in dune systems are important for biodiversity, but are dynamic in their characteristics, both spatially and in time. Slack floors can be characterised as dry, partly wet or flooded, depending on the water table levels and in each case they can support differing vegetation and animal species. This paper examines the effects of changes in water table levels on the location of wet slack floors in the Aindsale NNR. A groundwater model is used to calculate the water table levels on a month by month basis based on climatic, hydrological and vegetation conditions. Detailed topographic survey data at 2m grid intervals from LIDAR imagery are used to represent the ground surface in the slack floors. The expected slack type (dry, damp, flooded) is generated by intersecting the LIDAR digital terrain model with the predicted water table levels. The model has been used to calculate the distribution and frequency of occurrence of the various slack floor types between 1972 and 2004. The UKCIP’02 climate change predictions have been used to estimate the future extent and size of flooded slack floors at Ainsdale up to the year 2100.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: University Structure - Pre August 2011 > School of Civil Engineering and the Environment
ePrint ID: 53051
Date Deposited: 22 Aug 2008
Last Modified: 27 Mar 2014 18:36
URI: http://eprints.soton.ac.uk/id/eprint/53051

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