Identification

Dynodydd

Identifier

NRW_DS116511

Laith Metadata

Metadata Language

English

Lineage

Annual quantitative macrofauna and sediment sampling was conducted using a hand held core or Ekman grab for surveys conducted at Cemlyn, Morfa Gwyllt and Pickleridge between 2006 and 2013. In recent years, infauna and sediment winter sampling has also been undertaken at Neyland Weir Pool and Carew Mill Pond (2011, 2012 and 2013). At all lagoons other than Morfa Gwyllt, a fixed sampling station design were chosen to capture the range of potential benthic variation that might occur due to point sources of seawater and freshwater input and to minimize the risk of widespread disturbance caused by destructive sampling. At the smaller Morfa Gwyllt site no potential input gradients were likely and so a randomised sample plot was selected. All samples were sieved over a 0.5 mm mesh in situ, preserved in 4 percent formalin solution and then transferred to a laboratory where biota were sorted and enumerated to the lowest possible taxonomic level.

Additional Information

Samples were analysed by Fugro Marine (formally ERT Ltd) for all years except 2012, where APEM ltd undertook the analysis. Both contractors undertook work in line with National Marine Biological Analytical Quality Control guidance. For further information see: Green, M & Camplin, M (2013) Saline lagoons: An Across Wales Macrofaunal Community Monitoring Report. NRW Evidence Report Series. Report Number ? Natural Resources Wales, Bangor, Gwynedd, Wales.

Dyddiad cyfeirnod y set ddata (Cyhoeddiad)

Dataset Reference Date (Publication)

2016-03-31

Extent

Extent

Hyd

Geographic Extent

Wales (WLS)

N

W

E

S

 

Distribution

Quality

Keywords

Spatial Reference System

Content

Constraints