Identification

Dynodydd

Identifier

NRW_DS111181

Teitl Amgen

Alternative Title

• 2007 CCW/ASML Carmarthen Bay and Estuaries SAC transect monitoring (MRCCW16300000007)

Laith Metadata

Metadata Language

English

Lineage

A modified version of standard Marine Nature Conservation Review (MNCR) Phase 2 methodology was utilised. 20 transects (13 surveyed initially in 2005 and seven surveyed for the first time in 2007) were pre-selected by CCW to represent the variety of sediment biotopes present. Using handheld GPS the surveyors walked down the transect lines making notes on substrata/habitats and deciding how many biotopes were present. A GPS fix was taken at a station position within each of those biotopes which was considered to best represent the biotope. One or more (max 3) of the sediment stations were selected for quantitative core sampling (usually biotopes most vulnerable to change from anthropogenic activity and which represented a significant portion of the transect). Five core samples were taken from each of the selected sampling stations for macrofauna and granulometry analyses and a site description and photograph were taken at each station. Two in-situ bivalve count methodologies were also trialled opportunistically during the surveys of 4 transects- an estimation of the numbers of Scrobicularia plana and an estimate of the densities of Cerastoderma edule, Macoma balthica and Angulus tenuis.

Between 1999 and 2001, the Countryside Council for Wales (CCW) undertook a Phase 1 biotope mapping survey (Wyn et al. 2006) of the intertidal areas of the Carmarthen Bay and Estuaries Special Area of Conservation (SAC).

Dyddiad cyfeirnod y set ddata (Cyhoeddiad)

Dataset Reference Date (Publication)

2009-03-31

Extent

Extent

Hyd

Geographic Extent

Wales (WLS)

N

W

E

S

 

Distribution

Quality

Keywords

Spatial Reference System

Content

Constraints