2011 Natural England (NE) Chesil and the Fleet Survey of Shingle Springline Communities

A preliminary survey of Shingle Springline Communities in the Fleet was undertaken in the summer and early autumn of 2011. These springline communities were identified as a qualifying sub-feature of the Chesil and the Fleet European Marine Site by English Nature but the extent of the habitat remained unknown, neither was a methodology for surveying this sub-feature established at that time. The aims of the present project were therefore: To develop a sampling methodology for the spring communities, compare mollusc species found in 2011 with work reported in 1989, identify other invertebrate species where possible. Two types of spring, and hence two types of springline community were found to be present on the Chesil Bank shore of the Fleet: Fast flowing springs – eastern Fleet, less active springs (seeps) – western Fleet.2011年夏末秋初，研究团队对弗利特（Fleet）区域内的砾石春带群落（Shingle Springline Communities）开展了初步调查。此前英国自然署（English Nature）已将该类春带群落认定为切瑟尔与弗利特欧洲海洋保护区（Chesil and the Fleet European Marine Site）的合格次级生境类型，但彼时该生境的分布范围尚未明确，且尚未建立针对该次级生境的调查方法体系。因此，本项目的核心目标为：构建针对春带群落的采样方法体系；将2011年采集的软体动物物种数据与1989年的已发表研究结果进行比对；尽可能识别其他无脊椎动物物种。在弗利特的切瑟尔滩（Chesil Bank）沿岸，共发现两类泉眼，对应两类春带群落：其一为位于弗利特东部的急流泉，其二为位于弗利特西部的低活性渗泉（seeps）。