Hammer-headed bat movement behavior and habitat selection

Background: Animals with key ecological roles, such as seed-dispersing fruit bats, rely to varying degrees on habitat structure to indicate the locations of rewards and risks. Methods: To understand how variation in vegetation structure influences fruit bat selection, we related movement steps of hammer-headed bats (Hypsignathus monstrosus) to attributes of canopy height, vertical and horizontal structure, and habitat type in a mature rainforest of southern Cameroon. Vegetation structural metrics were measured with UAV-LiDAR at 10 m resolution for a 25 km2 study area. Because bats frequently moved outside the study area, we also characterized vegetation height and horizontal complexity over the full extent of bat movement trajectories by upscaling UAV-LiDAR measurements using spaceborne remote sensing, including GEDI LiDAR data. Results: At the site level, hammer-headed bats preferred areas of intermediate canopy height close to large canopy gaps (≥500 m). Individual bats varied in sel..., , , # Habitat selection of hammer-headed bats Nicholas J. Russo University of California, Los Angeles [[e-mail]](mailto:[e-mail]) [[e-mail]](mailto:[e-mail]) This repository contains the data and code necessary to reproduce the results of Russo et al. (DOI: ) ### Scripts * `Russo_et_al_Bat_iSSA_Dryad_Share.R`: Script that produces all analyses and figures included in the manuscript, including: * Sample period of each bat (Fig. S1) * Integrated Step Selection Analyses (iSSAs) and 95% confidence intervals for covariates at both site-level and landscape scales, including: * Relative Selection Strength for Canopy Height at site level (Fig. 2A) and landscape level (Fig. 2B) * Selection for all other structural covariates (Fig. 3) * Population-level GLMMs at site level (Table 1 summary) and landscape level (Table 2 summary) * Selection for swamp habitat based on movement step length (Fig. 4) * Recursive movement analy...背景：具有关键生态功能的动物（如传播种子的果蝠）会在不同程度上依赖栖息地结构来判断奖励与风险的所在位置。 方法：为探明植被结构差异如何影响果蝠的生境选择，我们以喀麦隆南部一处成熟热带雨林为研究区域，将锤头果蝠（Hypsignathus monstrosus）的移动步与冠层高度、垂直与水平结构以及生境类型等植被属性相关联。研究区域面积为25平方千米，我们以10米分辨率通过无人机激光雷达（UAV-LiDAR）获取了植被结构参数。鉴于果蝠常会移动出研究区域范围，我们还通过星载遥感技术（包括GEDI激光雷达（GEDI LiDAR）数据）对无人机激光雷达测量结果进行尺度上推，以此刻画果蝠移动轨迹全覆盖范围内的植被高度与水平复杂度特征。 结果：在样地尺度上，锤头果蝠偏好冠层高度中等且邻近大型冠层间隙（≥500米）的区域。不同个体果蝠的选择策略存在差异…… # 锤头果蝠的生境选择 尼古拉斯·J·拉索 加州大学洛杉矶分校 [[e-mail]](mailto:[e-mail]) [[e-mail]](mailto:[e-mail]) 本代码库包含复现拉索等人（Russo et al.）研究成果所需的全部数据与代码（DOI：） ### 脚本文件 * `Russo_et_al_Bat_iSSA_Dryad_Share.R`：本脚本可生成论文中包含的全部分析结果与图表，具体包括： * 每只果蝠的采样周期（补充图S1） * 集成步选择分析（Integrated Step Selection Analyses, iSSAs）及样地与景观尺度下协变量的95%置信区间，其中包含： * 样地尺度与景观尺度下冠层高度的相对选择强度（分别对应图2A与图2B） * 其余所有结构协变量的生境选择偏好（图3） * 样地尺度与景观尺度下种群水平广义线性混合模型（Generalized Linear Mixed Models, GLMMs）的结果汇总（分别对应表1与表2） * 基于移动步长的沼泽生境选择偏好（图4） * 递归移动分析……