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Ruderal Grasslands and Streaked Horned Lark Reserves in the Willamette Valley: Reviving a Unique Ecosystem and Recovering an Imperiled Pacific Northwest Bird
The loss of annual natural mechanisms to maintain ruderal grassland habitat in the Willamette Valley has been a primary factor in the decline and listing of the Streaked Horned Lark as a Threatened species under the U.S. Endangered Species Act. Extensive efforts to integrate lark conservation and recovery with other land uses have been unsuccessful
Evaluating spatial and temporal trends in ecological indicators at dredged material placement sites
The beneficial use of dredged material (BUDM) is increasing and studies have demonstrated ecological benefits, but confidence among stakeholders continues to lag. Primary hurdles for BUDM practitioners lie in identifying approaches that can assuage local concerns, while adopting general metrics to quantify ecological benefits that are transferable and economically feasible. While controlled experiments will advance
Pesticide Risk Assessment for Streaked Horned Larks: A Review of Pesticides Used in the Willamette Valley, Oregon
Grassland birds are declining faster than birds in any other biome likely due to land conversion, intensification of agriculture practices, and increased inputs of pesticides. The endangered species, Streaked Horned Lark, is a ground-nesting grassland bird that utilizes agriculture land to forage and breed. Willamette Valley houses the largest populations of Streaked Horned Larks within
Evaluating the Effectiveness of Vernal Pools and Swales in Prairie Restoration for Streaked Horned Larks in the Willamette Valley, Oregon 2022-2023
The Streaked Horned Lark (hereafter lark) is an Oregon Conservation Strategy species and a Threatened species under the U. S. Endangered Species Act. Most of its range-wide population (<2,000 birds) occurs in the southern Willamette Valley, Oregon. Larks evolved as an early-successional open landscape-dependent species with a unique niche at the initiation end of the
Streaked horned lark abundance and trends for the Puget lowlands and the lower Columbia River/Washington Coast, 2010-2023
2024 Research Progress Report summarizing streaked horned lark (SHLA) abundance and trends for the Puget lowlands and the lower Columbia River/Washington Coast through the 2023 field season. Abundance estimates for individuals sites (accounting for year and sex) can be found in the table at the end of the report.
Population and Habitat Objectives for Landbirds in Prairie, Oak, and Riparian Habitats of Western Oregon and Washington
This document provides quantitative and multi-scaled population and habitat objectives for 26 focal and seven imperiled bird species in prairie, oak, and riparian habitats in the Puget Lowlands, Willamette Valley, and Klamath Mountains ecoregions of western Oregon and Washington. It represents the collective efforts of individuals from multiple agencies and organizations within the Oregon-Washington chapter
Recovery of the Unique and Threatened Streaked Horned Lark in the Willamette Valley, Oregon: The Need for a Paradigm Shift to Financial Incentives and Targeted Regulation
The purpose of this opinion paper is to 1) provide context and critique of the recent Streaked Horned Lark (Eremophila alpestris strigata; hereafter lark) Endangered Species Act (ESA) listing (USFWS 2022), 2) highlight the challenges and inadequacies of the current approach to lark recovery, and 3) present an assessment of the pathway to lark recovery
Minimizing conflict between airfield operations and lark conservation: a grass conversion demonstration project at Joint Base Lewis-McChord military base
In 2017, CNLM, with funding from USFWS, initiated a grass conversion demonstration project on Joint Base Lewis-McChord airfields. The goal was to replace the tall, exotic pasture grasses with native bunchgrasses at Gray Army and McChord Airfield on two 5-acre experimental plots. The project evaluated the feasibility of converting vegetation and investigate whether grass conversion
Coyote Creek South Breeding Birds and Streaked Horned Larks, 2020
The 309-acre Coyote Creek South property, owned by the Oregon Department of Fish and Wildlife (ODFW), is undergoing habitat restoration in cooperation with the Long Tom Watershed Council (LTWC). The habitat restoration includes conversion of former grass seed fields to wet prairie and vernal pool habitat. Phase 1 is 112 acres of wet prairie and
Streaked horned lark abundance and trends for the Puget lowlands and the lower Columbia River/Washington Coast, 2010-2018
The streaked horned lark (Eremophila alpestris strigata) is a partially migratory subspecies associated with sparsely vegetated grassland habitats (Beason 1995, Stinson 2005, Altman 2011) and is listed as threatened under the Endangered Species Act. It is also listed as endangered by the state of Washington and in Canada (Canadian Species at Risk Act 2002). The