(WFS) - Seals: Resting places in the Schleswig-Holstein Wadden Sea from 1989, (buffer: 500m) (LKN.SH - NPV)

A resting place is a calculated area generated on the basis of individual berths of seals or grey seals. For this purpose, the berths are 1. spatially summarized per year and 2 these calculations are also carried out on the basis of individual flights. A resting place is defined as a circle with a radius of 500m around a berth (with at least 2 seals), whereby several berths can be aggregated to a larger area. The distance of 500m was chosen because disturbances more than 500m away have no or little effect on dormant seals. These areas are needed for intervention planning in order to minimise the disturbances of the seals associated with the intervention. For seals, flights from 1.03-30.09 are taken into account for the calculation of resting places per year. The service contains the following information and layers: 1. Resting places per year aggregated: the location and size of the resting place and the period of recordings used in the calculation (single-year layer and layer with all data of all years). 2. Resting places per flight: Here, information about the number of individuals can also be derived (yearly layers and layers with data of all flights of all years).海豹休憩区（resting place）是基于斑海豹或灰海豹的单个栖息位点（berth）生成的计算区域。为此，需按以下两类规则对栖息位点进行处理：1. 按年份开展空间汇总；2. 基于单个调查航次（flight）开展此类计算。海豹休憩区的定义为：以至少栖息有2只海豹的单个栖息位点为圆心、半径500米的圆形区域，多个栖息位点可聚合为更大的休憩区域。选取500米作为半径的依据是：500米以外的干扰对处于休眠状态的海豹几乎无影响或影响极小。此类休憩区域可用于制定人为干预计划，以最大程度降低干预活动对海豹造成的干扰。针对斑海豹或灰海豹，年度休憩区计算所纳入的调查航次时间范围为每年3月1日至9月30日。该数据集服务包含以下信息与地理信息图层：1. 年度聚合休憩区：包含休憩区的位置、面积，以及计算中所用的观测时段（包含单年度图层与全年度整合图层两类）。2. 单航次休憩区：可衍生出个体数量相关信息（包含按年度划分的图层，以及涵盖所有年份全部航次数据的图层）。