Effectively and accurately mapping global biodiversity patterns for different regions and taxa

Aim

To understand the representativeness and accuracy of expert range maps, and explore alternate methods for accurately mapping species distributions.

Location

Global

Time period

Contemporary

Major taxa studied

Terrestrial vertebrates, and Odonata

Methods

We analyzed the biases in 50,768 animal IUCN, GARD and BirdLife species maps, assessed the links between these maps and existing political and various non-ecological boundaries to assess their accuracy for certain types of analysis. We cross-referenced each species map with data from GBIF to assess if maps captured the whole range of a species, and what percentage of occurrence points fall within the species’ assessed ranges. In addition, we use a number of alternate methods to map diversity patterns and compare these to high resolution models of distribution patterns.

Results

On average 20-30% of species’ non-coastal range boundaries overlapped with administrative national boundaries. In total, 60% o...

研究目标：旨在厘清专家物种分布范围图的代表性与准确性，并探索精准绘制物种分布的替代方法。
研究范围：全球
时间跨度：当代
研究类群：陆生脊椎动物与蜻蜓目（Odonata）
研究方法：本研究分析了50,768份动物类群的国际自然保护联盟（IUCN）、GARD及国际鸟盟（BirdLife）物种分布范围图所存在的偏差；通过探究此类分布图与现有政治边界及各类非生态边界的关联，评估其在特定分析场景下的准确性。本研究将每份物种分布图与全球生物多样性信息设施（GBIF）的数据进行交叉比对，以验证分布图是否覆盖物种的完整分布范围，以及有多少比例的物种出现记录点落在该物种的评估分布范围内。此外，本研究采用多种替代方法绘制物种多样性格局，并将其与高精度分布格局模型进行对比。
研究结果：平均而言，20%至30%的物种非沿海分布范围边界与国家级行政边界存在重叠；总体而言，60%……