1996 English Nature (EN) Research Report, Dorset, core sampling survey for the lagoon sandworm (Armandia cirrhosa) and other infaunal species

These records all relate to "Downie (1996) The lagoon sandworm Armandia cirrhosa (EN Research Report No. 202)" A copy of the report is held at English Nature (Dorset Team). The main aim of this survey was to look for the presence of the saline lagoon sandworm (Armandia cirrhosa) at the two known sites where it had previously been found in 1995. In addition a third site in Portland Harbour was also sampled. Infaunal species were sampled, from each separate habitat by taking four 0.01m2 core samples to a depth of 20cm at each of the three survey sites. Material retained on a 0.5mm sieve for each site was combined as a sample, per habitat, and subsequently identified by Dr Peter Garwood. Specimens collected during the survey were identified in the lab by Dennis Seaward. Positional information was gathered using a hand-held GPS and converted into OS grid references, as stated in the report. Some slides were taken from this survey and are held in the Maritime Team's slide collection at Northminster House.本数据集所有记录均源自《唐尼（1996）：潟湖沙蚕Armandia cirrhosa（EN研究报告第202号）》，该报告副本由英国自然保护委员会（English Nature，多塞特工作组）馆藏。 本次调查的核心目标为：在1995年曾发现咸水潟湖沙蚕（Armandia cirrhosa）的两处已知样点开展排查，确认该物种的存续情况；此外还对波特兰港的第三处样点进行了采样。针对三个调查样点的各独立生境，均采用4组0.01平方米的柱状采样器采集深度为20厘米的样品，以此获取底栖内栖物种样本。将各生境下各采样点经0.5毫米孔径筛网截留的样品合并为单一样品，随后由彼得·加伍德博士完成物种鉴定。本次调查采集的部分标本由丹尼斯·西沃德在实验室完成鉴定。点位信息通过手持GPS采集，并按照报告中的说明转换为英国地形测量局（OS）坐标格网编号。本次调查制作的部分玻片标本，现馆藏于诺思敏斯特大厦海事工作组的玻片标本库中。