Simple download service (Atom) of the dataset: Sensitivity Maps — Maps Natural Regions — Polysarcus_denticauda (Barbitist Ventru)

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至2019年由大东部奥多纳特（ODONAT Grand Est）监测网络制作的物种敏感性分布图。 本数据集基于近期物种出现记录（按物种分别采用1999-2018年或2009-2018年的数据）表征物种分布范围。 此类区域包含近期内至少有一次该物种观测记录的自然区域，以及经专家高度推测存在该物种或存有较早观测数据的自然地带。 对于存有近期非边缘观测记录的自然地带，该物种的存在情况通过统计该地带内观测到该物种的1×1公里网格占比来表征。如需了解计算方法的详细说明，请参阅《自然地带地图说明手册》。 自然地带指非生物环境（地形、地质、气候等）相对均一的区域。 实际上，只要在某一自然地带内观测到该物种（即便仅在单个点位），即可高度推定该地带内其他区域也存在适宜其生存的栖息地。 所有观测记录均纳入考量范围，涵盖人工引种种群与偶见个体。 本图层仅反映制作完成时的认知现状，不应被视为涵盖所有分布范围，该物种仍有可能出现在已识别区域之外。 如需获取更多信息，请参阅卡片读取说明文档及配套PDF卡片。