Sensitivity Maps — Maps Natural Regions — Somatochlora_arctica (Arctic Chlorocorduli)

Sensitivity maps 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 natural areas in which at least one observation of the species has been carried out in the recent period, as well as natural regions where the species is highly suspected (i.e. experts) or has older data. In each of the natural regions with recent non-marginal observations, this presence is represented by the calculation of the proportion of 1 x 1 km meshes in which the species was observed. For an explanation of the method of calculation, refer to the Natural Regions Map Explanation Sheet. Natural regions identify areas in which abiotic conditions (relief, geology, climate...) are relatively homogeneous. In fact, the observation of a species in a natural region (even at a single location) provides a strong presumption of other favourable habitats elsewhere in the natural region. 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年由大东部大区ODONAT（ODONAT Grand Est）网络制作的物种敏感性分布图。 该物种种群分布基于近期观测记录生成，不同物种分别采用1999—2018年或2009—2018年的观测样本。 本数据集覆盖两类区域：一是近期内至少完成过一次该物种观测记录的自然区域，二是经专家高度推定存在该物种或存有较早观测数据的自然区域。 针对存有有效近期观测记录的自然区域，该物种的存在情况通过统计1×1公里网格中观测到该物种的网格占比进行表征。如需了解计算方法的详细说明，请参阅《自然区域地图说明手册》（Natural Regions Map Explanation Sheet）。 自然区域指非生物环境条件（地形、地质、气候等）相对均一的区域。 实际上，只要在某一自然区域内观测到该物种（即便仅在单个点位），即可高度推定该区域内其他位置亦存在适宜该物种生存的栖息地。 所有观测记录均纳入统计范畴，既包括人工引种的种群，也包含偶发出现的个体。 本图层仅反映其制作完成时的认知水平，不应被视为涵盖所有可能的分布范围；在本图层划定的区域之外，仍有可能存在该物种的分布区域。 如需获取更多信息，请参阅数据卡片读取说明及相关PDF格式数据卡片。