Identification

Identifier

NRW_DS102032

Alternative Title

• 2004 CCW / IECS Cardigan Bay SAC sediment floored rockpool monitoring (MRCCW3020000000E)

Metadata Language

English

Lineage

Surveys were carried out three hours either side of low water. Rockpools were chosen which could be easily relocated for future monitoring. Boundaries of distinct pools were mapped using dGPS, characteristics of the pool were recorded (dimensions, location on shore and any distinguishing features) and photographs were taken. Species present were recorded and any plants or animals which could not be identified in the field were collected for further analysis. Additional underboulder species were checked for by turning over at least ten rocks and a small net was used to catch mobile species. A note was made of time spent compiling the species list. In the case of a single large rockpool a series of sampling points measuring 1m2 were surveyed to gain a representative species list, other species that fell outside the sampling area were also noted. Timed counts were carried out over two minute periods for key characterising species (Patella vulgata , Littorina littorea, Pagurus bernhardus, Nucella lapillus, Gibbula umbilicalis) to give an indication of abundance. The rockpools at Cei Bach had previously been identified as species rich during Phase 1 survey carried out by CCW in 1996.

Additional Information

Taxonomic identification carried out by experienced intertidal surveyors. Positional accuracy using the dGPS is expected to be 1-5 metres.

Dataset Reference Date (Publication)

2009-01-31

 

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