This review prioritizes infrastructure improvements of 35 existing undercrossings inspected by wildlife experts in the field along 14.6 miles of SR-94 where the highway bisects conserved lands—particularly between the San Diego National Wildlife Refuge (SDNWR), where a box culvert has been designed specifically for this undercrossing, between Rancho Jamul Ecological Reserve (RJER) and Hollenbeck Canyon Wildlife Area (HCWA), and between Bureau of Land Management (BLM) lands and the Lawrence and Barbara Daley Preserve (LB Daley). In total, SR-94 crosses >10 miles of conserved lands with only three bridges—at the Sweetwater River, Dulzura Creek, and Campus Grove bridge in Dulzura. Following is a summary of improvements recommended for existing undercrossings and proposed new undercrossings, by segment, presented in this document.
Because of a lack of clarity about the status of golden eagles (Aquila chrysaetos) in coastal southern California, the U.S. Geological Survey, in collaboration with U.S. Fish and Wildlife Service, California Department of Fish and Wildlife, Bureau of Land Management, and San Diego Management and Monitoring Program, began a multi-year survey and tracking program of golden eagles to address questions regarding habitat use, movement behavior, nest occupancy, genetic population structure, and human impacts on eagles. Golden eagle trapping and tracking efforts began in September 2014. During trapping efforts from September 29, 2014, to February 23, 2017, 37 golden eagles were captured. During trapping efforts from February 24, 2017, to December 2, 2019, an additional 7 golden eagles (4 females and 3 males) were captured, and one previously captured female was recaptured in San Diego County. Biotelemetry data for 27 of the 44 golden eagles that were transmitting data from February 24, 2017, to December 2, 2019, are presented. These eagles ranged as far north as British Columbia, Canada, and as far south as Ciudad Insurgentes, Baja California, Mexico.
ECORP Consulting, Inc (ECORP) was retained by the Bureau of Land Management (BLM) to conduct presence/absence surveys for the federally ndangered Quino checkerspot butterfly (Euphydryas editha quino) at the Dulzura Fuel Break located in the County of San Diego, California. Six Quino checkerspot butterfly (QCB) adult focused surveys were conducted in accordance with the most recent protocol guidelines for this species (USFWS 2002) along anapproximately 1.5-mile stretch of the Dulzura Fuel Break during the 2007 flight season. The surveys resulted in thifteen QCB detections over the course of the surveys, the peak of which occurred in late March.
This report describes Earth Discovery Institute’s (EDI) progress in conducting outreach efforts in south San Diego County by assisting the US Fish and Wildlife
Service (USFWS), California Department of Fish and Wildlife (CDFW), Endangered Habitats Conservancy (EHC), US Bureau of Land Management (BLM),
Conservation Biology Institute (CBI), and The Nature Conservancy (TNC) with community and volunteer events that focus on improving public knowledge about
and involvement with conserved lands in southern San Diego County.
Now in its ninth year since adoption, the Multiple Species
Conservation Program (MSCP) is recognized as a successful
model in the conservation of endangered and sensitive
species and their habitats. This continuing effort is the joint
work of the State government (California Department of
Fish and Game, Wildlife Conservation Board and California
Coastal Conservancy), the Federal government (U.S. Fish
and Wildlife Service and Bureau of Land Management),
local jurisdictions, and development and environmental
interest groups. In the City of San Diego, 91.9% of the
conservation goal of 52,727 acres has been realized in nine
years through public acquisitions, conservation through the
development entitlement process and mitigation banks. The
remaining 8.1%(4,273 acres) is the focus of the City of San
Diego's on-going conservation effort associated with public
acquisitions and development project review. As the City
gets closer to reaching its conservation goal, it is refining its
biological monitoring and long-term management efforts.
Beginning in 2014, the U.S. Geological Survey, in collaboration with Bloom Biological, Inc., began telemetry research on golden eagles (Aquila chrysaetos) captured in the San Diego, Orange, and western Riverside Counties of southern California. This work was supported by the San Diego Association of Governments, California Department of Fish and Wildlife, the U.S. Fish and Wildlife Service, the Bureau of Land Management, and the U.S. Geological Survey. Since 2014, we have tracked more than 40 eagles, although this report focuses only on San Diego County eagles. An important objective of this research is to develop habitat selection models for golden eagles. Here we provide predictions of population-level habitat selection for golden eagles in San Diego County based on environmental covariates related to land use and terrain.
Beginning in 2014, the U.S. Geological Survey, in collaboration with Bloom Biological, Inc.,
began telemetry research on golden eagles (Aquila chrysaetos) captured in the San Diego, Orange, and western Riverside Counties of southern California. This work was supported by the San Diego Association of Governments, California Department of Fish and Wildlife, the U.S. Fish and Wildlife Service, the Bureau of Land Management, and the U.S. Geological Survey. Since 2014, we have tracked more than 40 eagles, although this report focuses only on San Diego County eagles. An important objective of this research is to develop habitat selection models for golden eagles. Here we provide predictions of population-level habitat selection for golden eagles in San Diego County based on environmental covariates related to land use and terrain.
Chambers Group, Inc. was retained by the Bureau of Land Management (BLM), to conduct a literature review, a reconnaissance-level biological survey, and to prepare biological technical report of findings for the approximately 438-acre Internalional Fuel Break site. This report provides recommendations for sensitive plant and wildlife species potentially present on the property.
Because of a lack of clarity about the status of golden eagles (Aquila chrysaetos) in coastal southern California, the U.S. Geological Survey, in collaboration with U.S. Fish and Wildlife Service, California Department of Fish and Wildlife, Bureau of Land Management, and San Diego Management and Monitoring Program, began a multi-year survey and tracking program of golden eagles to address questions regarding habitat use, movement behavior, nest occupancy, genetic population structure, and human impacts on eagles. Golden eagle trapping and tracking efforts began in September 2014. During trapping efforts from September 29, 2014, to February 23, 2017, 37 golden eagles were captured. During trapping efforts from February 24, 2017, to December 2, 2019, an additional 7 golden eagles (4 females and 3 males) were captured, and one previously captured female was recaptured in San Diego County. Biotelemetry data for 27 of the 44 golden eagles that were transmitting data from February 24, 2017, to December 2, 2019, are presented. These eagles ranged as far north as British Columbia, Canada, and as far south as Ciudad Insurgentes, Baja California, Mexico.
