1978 - 2009 Chris Mandry Lundy North Devon scallop Pecten maximus monitoring scuba dives timed search

Scallop monitoring at Lundy carried out by Chris Mandry from North Devon. The numbers of scallops (over 100mm) collected over a 20 minute period (observations per minute) whilst Scuba diving where recorded each year between 1978 and 2009. Volunteer records of Scallops Monitoring at Lundy between 1978 and 2009. 202 monitoring divers were undertaken between a depth range of 19.1 and 29.9m. Yearly figures are given in observations per dive/ per minute.本数据集为北德文郡（North Devon）的克里斯·曼德里（Chris Mandry）开展的朗迪（Lundy）海域扇贝监测项目相关数据：1978年至2009年间，研究人员在水肺潜水（Scuba diving）过程中，每年均记录了20分钟观测时段内（以每分钟观测次数为统计单位）采集到的体长超过100毫米的扇贝数量。 本次数据集同时包含1978年至2009年间朗迪海域扇贝监测的志愿者记录，共实施202次监测潜水，作业水深区间为19.1米至29.9米。年度数据以单次潜水/每分钟观测次数为单位给出。