Sensitivity Cards — Non-Sensitive Weighted Mail Cards — Phengaris_alcon (Bird Crossing)
收藏资源简介:
Sensitivity map made by the ODONAT Grand Est network in 2018-2019. The distribution of the species is represented from recent occurrence data (1999-2018 or 2009-2018 by species). These are the 10 x 10 km Lambert 93 meshes in which at least one observation of the species has been made in the recent period. In each of these 10 x 10 km meshes, this presence is represented by the calculation of the proportion of 1 x 1 km meshes in which the species was observed. Any observations shall be taken into account: they can be implanted populations, but also erratic individuals. This layer represents the state of knowledge at the time of its realisation, it should not be considered exhaustive. The presence of the species outside the identified areas is possible. Refer to the card reading instructions as well as PDF cards for more information.
2018—2019年由ODONAT大东部大区网络(ODONAT Grand Est)制作的物种敏感性分布图。 本数据集基于近年物种观测数据(按物种不同,数据时段为1999—2018年或2009—2018年)表征物种分布情况。 本数据集采用兰伯特93(Lambert 93)坐标系下的10×10千米格网,此类格网在近年时段内至少存在1次该物种的观测记录。在每个10×10千米格网中,该物种的存在情况通过统计其中监测到该物种的1×1千米格网占比来体现。 所有观测记录均纳入统计范畴,既包括人工定植种群,也包含偶然出现的个体。 本图层仅反映制作完成时的研究认知现状,不应被视作穷尽式的分布数据集,该物种在已识别区域之外仍存在被观测到的可能。 如需获取更多详细信息,请参阅格网读图说明及配套PDF卡片文件。



