Land use data and anuran species richness for North American Amphibian Monitoring Program survey sites

Data from 587 NAAMP survey sites. NAAMP survey locations are organized as "stops" within "routes," each of which has a unique SiteID. Land use variables were measured within buffers of 300m, 600m, 1000m, 5km, and 10km. Variables include "wet_prop" (proportion of area covered by wetland), "imperv" (proportion of area covered by impervious surface), "PROP_FOR" (proportion of area covered by forest), "PROP_DEV" (proportion of area covered by developed land uses, and "PROP_AGR" (proportion of area covered by row crop agriculture. Road-related variables are given as linear lengths (meters) within each buffer. Variables are T_ROAD_LEN (total road length), P_ROAD_LEN (primary (divided) roads), S_ROAD_LEN (secondary roads), O_ROAD_LEN (other roads, i.e. not P or S), and PS_ROAD_LEN (the sum of primary and secondary road lengths). Data also show the number of NAAMP surveys of each stop (Num.Surv), the number of years covered (Num.Years), mean car count during surveys (Car.Count), number of surveys with ambient noise (Noise.Num), and proportion of surveys that noted noise (NOISE_LEV = Noise.Num/Num.Surv). Amphibian presence/absence over all surveys are given for the species ANFO, HYCI, HYSQ, LICA, LICL, LIPA, LIPI, LISP, LISY, HYCV, PSTR (full scientific names are provided in the associated paper). NAs indicate sites outside the known range of each species. Richness is shown as the sum of all species detected at each stop, and NPP represents estimated Net Primary Productivity at that set (which provided a geographic expectation of anuran species richness).

本数据集涵盖587个NAAMP（北美两栖类监测计划，North American Amphibian Monitoring Program）调查点位。NAAMP调查点位以"路线（routes）"内的"停靠点（stops）"进行组织，每个停靠点均配备唯一的站点ID（SiteID）。土地利用变量在300m、600m、1000m、5km及10km的缓冲区范围内进行测算。变量包括"wet_prop"（湿地覆盖面积占比）、"imperv"（不透水面覆盖面积占比）、"PROP_FOR"（森林覆盖面积占比）、"PROP_DEV"（开发用地覆盖面积占比）以及"PROP_AGR"（条播作物农业覆盖面积占比）。道路相关变量以各缓冲区内的线性长度（单位：米）表征，具体包括：T_ROAD_LEN（道路总长度）、P_ROAD_LEN（主路（分隔式道路）长度）、S_ROAD_LEN（次路长度）、O_ROAD_LEN（其他道路，即非主/次路的道路）以及PS_ROAD_LEN（主路与次路的总长度）。数据集同时包含各停靠点的NAAMP调查总次数（Num.Surv）、调查覆盖的年数（Num.Years）、调查期间的平均车辆计数（Car.Count）、记录到环境噪声的调查次数（Noise.Num），以及记录到噪声的调查占比（NOISE_LEV = Noise.Num/Num.Surv）。基于所有调查结果，本数据集提供了ANFO、HYCI、HYSQ、LICA、LICL、LIPA、LIPI、LISP、LISY、HYCV、PSTR共11个物种的两栖动物存在/缺失数据（完整学名详见相关研究论文）。缺失值（NAs）代表对应点位位于该物种的已知分布范围之外。物种丰富度以各停靠点检测到的物种总数表征，NPP（净初级生产力，Net Primary Productivity）代表该点位的估算净初级生产力，其可作为无尾两栖类物种丰富度的地理预期值。