Seaweed in the Schleswig-Holstein Wadden Sea 2021-09-01

Aircraft mapping of seagrass meadows since 1991 as part of the Trilateral Monitoring Programme (TMAP). 2 density classes of closed stocks are recorded. The identification of the surfaces from the sports aircraft is only possible from about 25% coverage, Zostera noltii and Z. marina are not distinguished. The results are entered in maps according to the observations, and the positional inaccuracies are greater for remote stocks. Similar, but differing, mappings from 1989 and 1990 are available in the context of ecosystem research in Schleswig-Holstein's Wadden Sea.  Examination: Examination Description of the Examination: Situational comparison with other cartographic data, e.g. nautical charts of the BSH Assessment of the situation本数据集为1991年起作为三边监测计划（Trilateral Monitoring Programme, TMAP）组成部分所开展的海草床运动航空器测绘成果。共记录了两类密度等级的封闭型海草群落。通过运动航空器开展的海草床地表识别仅可在盖度约25%及以上的区域实现，且未区分矮大叶藻（Zostera noltii）与大叶藻（Zostera marina）。测绘结果依据实地观测标注于海图中，且偏远海草群落的位置误差相对更大。1989年与1990年开展的同类（但存在差异）测绘成果，可在石勒苏益格-荷尔斯泰因州瓦登海的生态系统研究项目中获取。■ 核查说明：核查内容为与其他制图数据（如德国联邦海事与水文局（BSH）的海图）开展情景比对，并进行现状评估。