Modelling the effects and economics of managed realignment on the cycling and storage of nutrients, carbon and sediments in the Blackwater estuary UK

Shepherd, D., Burgess, D., Jickells, T. D., Andrews, J., Cave, R., Turner, R. K., Aldridge, J., Parker, E. R. and Young, E. (2007) Modelling the effects and economics of managed realignment on the cycling and storage of nutrients, carbon and sediments in the Blackwater estuary UK. Estuarine, Coastal and Shelf Science, 73 (3-4). pp. 355-367. ISSN 1096-0015

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Abstract

A hydrodynamic model is developed for the Blackwater estuary (UK) and used to estimate nitrate removal by denitrification. Using the model, sediment analysis and estimates of sedimentation rates, we estimate changes in estuarine denitrification and intertidal carbon and nutrient storage and associated value of habitat created under a scenario of extensive managed realignment. We then use this information, together with engineering and land costs, to conduct a cost benefit analysis of the managed realignment. This demonstrates that over a 50-100 year timescale the value of the habitat created and carbon buried is sufficient to make the large scale managed realignment cost effective. The analysis reveals that carbon and nutrient storage plus habitat creation represent major and quantifiable benefits of realignment. The methodology described here can be readily transferred to other coastal systems. © 2007 Elsevier Ltd. All rights reserved.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Environmental Sciences University of East Anglia Research Groups/Centres > Theme - ClimateUEA
UEA Research Groups:	Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Geosciences Faculty of Science > Research Groups > Collaborative Centre for Sustainable Use of the Seas Faculty of Science > Research Groups > Environmental Social Sciences
Depositing User:	Rosie Cullington
Date Deposited:	27 Feb 2011 11:56
Last Modified:	15 Apr 2024 09:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/25083
DOI:	10.1016/j.ecss.2007.01.019

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