Wildlife Movement Barrier Priorities - CDFW - 2020 [ds3023]

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. The dataset represents the ten highest priority barriers identified in each region. This dataset represents CDFW's initial 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 the list also includes a local road, a high speed rail segment, and a concrete water conveyance canal. Additional information can be found in this report: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=178511. Wildlife Movement Barriers - CDFW [ds2867] represents a comprehensive dataset of all barriers identified to date, including those which have been remediated since 2020.加州鱼类与野生动物管理局（California Department of Fish and Wildlife, CDFW）将该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。此项工作中，各区域充分利用了手头全部可用的实证资料，包括现有连通性与道路跨越研究、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技术经验。 本数据集收录了每个区域识别出的十大优先阻隔点位。本数据集是CDFW在全州范围内识别优先野生动物移动阻隔点的初步尝试。当前，随着人口增长与气候变化的推进，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点的位置，有助于将有限的财政资源精准投向经确认存在最高需求的区域，以改善野生动物的移动通道。该项工作与CDFW为溯河洄游鱼类确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致，野生动物阻隔优先清单也将定期更新，以纳入新的观测信息并反映已完成的阻隔点移除成效。 本次识别出的阻隔点大多为高速公路路段，但清单中还包含一条地方道路、一段高速铁路路段以及一条混凝土输水渠道。更多相关信息可参阅此报告：https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=178511。《野生动物移动阻隔点——CDFW [ds2867]》为涵盖迄今所有已识别阻隔点的综合性数据集，其中包含2020年以来已完成修复的阻隔点位。