Locations of black bear (Ursus americanus) reproduction in Nevada from camera-trap data

# Locations of black bear (Ursus americanus) reproduction in Nevada from camera-trap data Camera trapping data set for American black bears in northwestern Nevada from 100 sites sampled across three years, with detections, indicated separate from adult bear detections. ## Description of the Data and file structure Data is provided as a named list in R * y = 3-dimensional array of black bear detection-nondetection data. 300 rows for each site of 100 sites, 9 columns for each secondary sampling week within seasons. The third dimension is years (3).1 = no bears detected, 2 = adult bear detected, 3 = cub(s) detected. * site = unique site identifier, used to specify random effect in multistate occupancy model. * conifer = proportion of conifer forest and woodland within a 5km radius of sites. Data are centered and scaled. * region = binary ecoregion covariate indicating is site was located in northwestern Forested * nsite = number of sites samples (100) * nsurveys = number of secondary sampling periods each year (9) * nyears = number of years (3) * Missing data code = NA ## Sharing/access Information Links to other publicly accessible locations of the data: Was data derived from another source? Yes, conifer variable (link 1) and ecoregion variable (link 2) If yes, list source(s): USDA/DOI LANDFIRE 2016 data set (https://www.landfire.gov/evt.php), US EPA North American Ecoregion Level I data set (https://www.epa.gov/eco-research/ecoregions-north-america)

# 基于相机陷阱数据的内华达州美洲黑熊（Ursus americanus）繁殖位点记录
本数据集为内华达州西北部100个采样点历时三年的美洲黑熊相机陷阱调查数据，其中熊类检测记录与成年黑熊检测记录做区分标注。

## 数据与文件结构说明
数据以R语言命名列表形式提供：
* `y`：三维数组形式的黑熊检测/未检测数据。100个采样点共300行数据，每季内的次级采样周对应9列，第三维度为年份（共3年），取值规则为：1代表未检测到黑熊，2代表检测到成年黑熊，3代表检测到幼崽。
* `site`：唯一采样点标识符，用于多状态占用模型（multistate occupancy model）中指定随机效应。
* `conifer`：采样点5公里半径范围内针叶林与林地的占比，数据已完成中心化与标准化处理。
* `region`：二元生态区协变量，用于标注采样点是否位于西北部森林区域。
* `nsite`：采样点总数（共100个）。
* `nsurveys`：每年次级采样周期数（共9个）。
* `nyears`：调查年份总数（共3年）。
* 缺失值编码为`NA`。

## 数据共享与获取说明
本数据的其他公开获取渠道：本数据集是否源自其他公开数据源？是。其中针叶林变量（链接1）与生态区变量（链接2）的数据源如下：
美国农业部/数字对象唯一标识符（USDA/DOI）LANDFIRE 2016数据集（https://www.landfire.gov/evt.php），美国环境保护署（US EPA）北美一级生态区数据集（https://www.epa.gov/eco-research/ecoregions-north-america）