Habitat point records from 1990 NRA Helford Estuary littoral survey

Four 0.01m2 cores were taken at each site. The survey was carried out in October 1990 by the NRA South West Region. Samples were also taken for particle size analysis and organic carbon/nitrogen analysis.每个采样点均采集4块面积为0.01平方米的芯样。此项调查由NRA西南区域于1990年10月开展。同时还采集了样品用于粒度分析及有机碳/氮含量分析。