Dull adnabod

Dynodydd

NRW_DS114942

Teitl Amgen

• 2009 CCW / ASML Carmarthen Bay SAC intertidal piddock bed monitoring MRCCW16300000022
• Gwaith Monitro Rhynglanwol ar Welau Pidogau yn ACA Bae Caerfyrddin ac Aberoedd 2009

Laith Metadata

English

Datganiad

The bed was divided into three blocks (western, eastern, central) and to sample randomly thrown quadrats (0.25 m2) within each block. In the event, it was found that the piddock distribution was clumped along the edges of channels and thus the randomly thrown quadrats were missing most of the piddocks. Because of this, part of the way through the exercise the method was adapted to targeting areas of piddock holes rather than sampling the whole clay exposure. In addition to the quadrat work, a number of timed counts of piddock holes were also carried out, with the intention of making a comparison between the two approaches to help with planning future monitoring work. Piddock beds were first mapped at Marros Sands near Pendine and Whiteford Point on the north Gower coast during Phase 1 surveys carried out by CCW in 2000.The piddock beds are vulnerable to shifting beach sand, a natural phenomenon. No beds were found at Whiteford Point in 2009, although monitored previously in 2004. Data quality and confidence is considered high as all surveys were completed by professional and experienced marine field surveyors. Piddock beds were first mapped at Marros Sands near Pendine and Whiteford Point on the north Gower coast during Phase 1 surveys carried out by CCW in 2000.

Dyddiad cyfeirnod y set ddata (Cyhoeddiad)

2012-06-30

Rhychwant

Rhychwant

Hyd

SIR GAERFYRDDIN - CARMARTHENSHIRE

N

W

E

S

 

Dosbarthiad

Ansawdd

Allweddeiriau

System Cyfeirio Gofodol

Cynnwys

Cyfyngiadau