Wildlife Movement Barriers - CDFW [ds2867]

CDFW divides the state into six administrative Regions. CDFW staff in each Region identified linear segments of infrastructure that currently present barriers to wildlife populations in their jurisdiction. In doing so, the Regions used all available empirical information in their possession, including existing connectivity and road crossing studies, collared-animal movement data, roadkill observations, and professional expertise. This dataset represents all barriers identified statewide as of June 2024 and former barriers that have been remediated since 2020. This dataset represents CDFW's ongoing effort to identify priority wildlife movement barriers across the state. Currently, increasing attention is being directed toward wildlife habitat connectivity as a mechanism of maintaining biodiversity in the face of population growth and climate change. Listing priority wildlife barrier locations will help focus limited financial resources where the highest need has been identified to improve wildlife movement. This is complementary to CDFW’s fish passage barrier priorities that have been identified for anadromous fish. Like the fish passage priorities, the wildlife barrier priorities list will be periodically updated to reflect new information and barrier removal successes. Most of the barriers identified are highway segments, but other infrastructure types such as fencing, canals, local roads, and high speed rail alignments are also represented. Additional information can be found at https://wildlife.ca.gov/Conservation/Wildlife/Connectivity/Barriers.加州鱼类与野生动物局（California Department of Fish and Wildlife，CDFW）将本州划分为六个行政区域。各区域的CDFW工作人员识别出了其管辖范围内当前对野生动物种群构成阻隔的线性基础设施路段。开展此项工作时，各区域团队充分利用了手头所有可用的实证资料，包括已有的连通性与道路穿越研究、佩戴追踪项圈的动物移动数据、道路致死动物观测记录，以及专业领域经验。本数据集涵盖了截至2024年6月在全州范围内识别出的所有阻隔设施，以及2020年以来已完成修复的原有阻隔设施。本数据集体现了CDFW为识别全州范围内优先野生动物移动阻隔设施所开展的持续性工作。当前，随着人口增长与气候变化的双重挑战，野生动物栖息地连通性作为维持生物多样性的重要手段，正受到越来越多的关注。梳理优先野生动物阻隔设施的位置，有助于将有限的财政资源集中投入到已确认的最亟需改善野生动物移动通道的区域。此项工作与CDFW为洄游鱼类划定的鱼类通行阻隔优先清单形成互补。与鱼类通行优先清单一样，野生动物阻隔优先清单也将定期更新，以纳入最新信息以及已成功移除阻隔设施的相关情况。本次识别出的阻隔设施大多为高速公路路段，但也涵盖了围栏、运河、地方道路以及高铁线路等其他类型的基础设施。更多详细信息可访问：https://wildlife.ca.gov/Conservation/Wildlife/Connectivity/Barriers。