9-second gridded continental Australia refugial potential for Reptiles 1990:2050 CanESM2 RCP 8.5 (CMIP5) (GDM: REP_r3_v2)

Refugial potential index for Reptiles as a function of climate change based on Generalised Dissimilarity Modelling (GDM) of compositional turnover. This metric represents a relative measure of the potential of each grid cell to act as a climate change refugia for the local (100km radius) area, taking the representation of current ecological environments by the future state of the cell, and the area of similar ecological environments in the future into account. This metric was developed along with others for use in an assessment of the efficacy of the protected area system for biodiversity under climate change at continental and global scales, presented at the IUCN World Parks Congress 2014. It is described in the AdaptNRM Guide “Helping Biodiversity Adapt: Supporting climate adaptation planning using a community-level modelling approach”, available online at: www.adaptnrm.org. Data are provided in two forms: 1. Zipped ESRI float grids: Binary float grids (*.flt) with associated ESRI header files (*.hdr) and projection files (*.prj). After extracting from the zip archive, these files can be imported into most GIS software packages, and can be used as other binary file formats by substituting the appropriate header file. 2. ArcGIS layer package (*.lpk): These packages contain can be unpacked by ArcGIS as a raster with associated legend. Additionally a short methods summary is provided in the file BiodiversityModellingMethodsSummary.pdf for further information. Layers in this 9s series use a consistent naming convention: BIOLOGICAL GROUP _ FROM BASE_ TO SCENARIO_ ANALYSIS e.g. A_90_CAN85_S or R_90_MIR85_L where BIOLOGICAL GROUP is A: amphibians, M: mammals, R: reptiles and V: vascular plants

基于群落更替广义相异模型（Generalised Dissimilarity Modelling, GDM）构建的爬行动物气候变化避难所潜力指数。该指标为相对度量值，用以表征各栅格单元为周边100公里半径区域提供气候变化避难所的潜力，其考量因素包括栅格未来状态对当前生态环境的表征能力，以及未来相似生态环境的分布范围。
本指标与其他同类指标共同开发，用于评估全球及大陆尺度下气候变化背景中保护区系统对生物多样性的保护成效，相关成果发表于2014年世界自然保护联盟（IUCN）世界公园大会。该指标的详细说明见于《AdaptNRM指南：助力生物多样性适应——基于群落级建模方法支持气候适应规划》，可通过以下网址在线获取：www.adaptnrm.org。
本数据集提供两种格式：
1. 压缩ESRI浮点栅格：包含二进制浮点栅格文件（*.flt）、配套ESRI头文件（*.hdr）与投影文件（*.prj）。从压缩包解压后，可导入绝大多数地理信息系统（GIS）软件，也可通过替换对应头文件的方式，作为其他二进制文件格式使用。
2. ArcGIS图层包（*.lpk）：此类包可由ArcGIS软件解压为带配套图例的栅格图层。此外，文件BiodiversityModellingMethodsSummary.pdf中提供了简短的方法学概述，以供进一步查阅相关信息。
本9秒系列图层采用统一命名规则：生物类群_基准期_情景_分析类型，示例为A_90_CAN85_S或R_90_MIR85_L。其中生物类群对应如下：A代表两栖动物，M代表哺乳动物，R代表爬行动物，V代表维管植物。