No. 17 Croker Carbonate Slabs cSAC/SCI Initial Monitoring Report
(017 - 2017)
Noble-James, T., Judd, A., Clare, D., Diesing, M., Eggett, A., Kröger, K. & Silburn, B.
This initial monitoring report analyses data acquired from the first dedicated monitoring survey of the Croker Carbonate Slabs cSAC/SCI, which form the first point in a monitoring time series against which feature condition can be assessed in the future.
 

Abstract

 

This monitoring report explores and describes the attributes of the Annex I habitat feature ‘Submarine structures made by leaking gases’ within the Croker Carbonate Slabs cSAC/SCI (and areas of the feature adjacent to the site boundary) to enable future assessments of feature condition under the EC Habitats Directive, and to fulfil wider monitoring needs under the Marine Strategy Framework Directive (MSFD). In addition to providing an initial monitoring dataset with which future monitoring data can be compared, the report will inform the development of an effective site and feature-specific monitoring approach for the Croker Carbonate Slabs cSAC/SCI.

This report primarily uses data acquired from a 2015 multidisciplinary partnership survey conducted by the Joint Nature Conservation Committee (JNCC) and the Centre for Environment, Fisheries and Aquaculture Science (Cefas). The survey was specifically designed to provide the first data point in a monitoring time-series for the Annex I feature ‘Submarine structures made by leaking gases’, in the form of Methane-Derived Authigenic Carbonate (MDAC). The feature was investigated both within the site (where it had previously been confirmed) and at an adjacent area of predicted ‘hard substrate’ beyond the site boundary, which was identified from acoustic data acquired in 2012 and 2013. This 2012/13 acoustic hard substrate model is compared qualitatively with the 2015 monitoring data, in addition to areas of MDAC delineated from acoustic and groundtruthing data acquired in 2008.

 
 
ISSN 2051-6711
 
Please cite as: Noble-James, T., Judd, A., Clare, D., Diesing, M., Eggett, A., Kröger, K. & Silburn, B., (017 - 2017), No. 17 Croker Carbonate Slabs cSAC/SCI Initial Monitoring Report, ISSN 2051-6711