Urban flyways survey on bat commuting along movement corridors

Urbanization can hinder movement and restrict landscape permeability for wildlife. However, there is the potential to improve landscape connectivity by establishing and maintaining movement corridors throughout urban areas. One way to achieve this is through the urban forest; the collection of trees in an urban area. Specifically, it is the characteristics of trees within this forest that can provide the structural and functional connectivity that enables wildlife to move effectively through urban areas. To investigate this, we explored the influence of four tree characteristics, alone and in combination, on bat commuting activity along 30 potential movement corridors in an urban setting in north central Texas. Along 10, 30, and 50 m corridor sections, we calculated percent canopy cover, and maximum gap distance between canopies, and canopy rugosity using a 60 cm resolution tree canopy layer, while maximum tree height was determined in situ. We then conducted behavioral observations usi..., , , # Urban Flyways Survey Data

[https://doi.org/10.5061/dryad.bnzs7h4kh](https://doi.org/10.5061/dryad.bnzs7h4kh)

## Description of the data and file structure

The data is divided into two worksheets, Behavioral Observation Data and Site Metrics.

For the behavioral observations, we used two thermal cameras to record bat activity at linear features. One camera pointing parallel to that feature, while a second camera was positioned perpendicular to the linear feature. From the footage recorded in 1 hour surveys, we used video analysis software to view the camera footage from both cameras side-by-side and record the instances when bats were observed commuting in the field-of-view.  We then summed the amount of time bats were observed commuting in the field-of-view for each 1-hr survey. We also conducted acoustic monitoring during the behavioral observation surveys to discern the number of species present. For this, we placed the detector parallel to the center of the linear feature with ...

城市化会阻碍野生动物的移动，限制其景观渗透能力。不过，通过在城市区域内布设并维护移动廊道，可有效提升景观连通性。实现这一目标的途径之一便是城市森林（Urban Forest）——城市区域内的树木集合。具体而言，城市森林内的树木特征能够提供结构与功能连通性，助力野生动物高效穿越城市区域。

为探究这一科学问题，我们以美国得克萨斯州中北部某城市区域内的30条潜在移动廊道为研究对象，分析了4种树木特征（单独作用及组合作用）对蝙蝠通勤活动的影响。针对10米、30米及50米的廊道区段，我们基于分辨率为60厘米的树木冠层图层，计算了冠层覆盖率、冠层间最大间隙距离以及冠层粗糙度；同时通过原位测量获取了树木最大高度。随后我们开展了行为观测，相关内容详见…… # 城市飞行通道（Urban Flyways）调查数据

[https://doi.org/10.5061/dryad.bnzs7h4kh](https://doi.org/10.5061/dryad.bnzs7h4kh)

## 数据集与文件结构说明

本数据集分为两个工作表：行为观测数据（Behavioral Observation Data）与样地指标（Site Metrics）。

在行为观测环节，我们使用两台热成像相机记录线性廊道处的蝙蝠活动：一台相机与线性廊道平行布设，另一台则垂直于该廊道布置。基于1小时时长的观测录像，我们通过视频分析软件同步查看两台相机的画面，并记录下视野内观察到蝙蝠通勤的时刻；随后对每轮1小时观测中，蝙蝠在视野内通勤的总时长进行求和统计。

我们还在行为观测期间开展了声学监测，以识别样地内的蝙蝠物种数量。为此，我们将声学探测器平行布设至线性廊道的中心位置，……