Non-native vascular plant inventory in riparian areas of Yosemite National Park, California
 
Although on the west slope of the Sierra Nevada, this project is run through our Eastern Sierra Field Station. The Sierra Nevada Network Inventory & Monitoring program and Yosemite National Park are implementing an inventory of nonnative vascular plant species in riparian and meadow habitats and in areas that have experienced fire. PRBO collected the inventory data during the first phase of the project in 2005.
Project Contact: Sacha Heath
Funding: National Park Service Sierra Nevada Inventory and Monitoring Network, Yosemite National Park
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Owens Valley Alluvial Fan |
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We monitored songbirds in the Owens Valley alluvial fan region 1998 - 2005. The project was designed to determine riparian breeding bird species diversity, richness and abundance, nest success and survivorship and nest habitat characteristics in this relatively undocumented region. The project encompassed Bureau of Land Management, Inyo National Forest and Los Angeles Department of Water and Power lands ranging from Big Pine to just south of Lone Pine. Our intensive efforts ended in 2000, but we continued to conduct point counts on a subset of the original point count stations to determine trends in bird numbers over time. We may revisit these sites in 5 – 10 years.
Project Contact: Sacha Heath
Funding: BLM, CDFG, Eastern Sierra Audubon Society, Inyo National Forest, National Fish and Wildlife Foundation, Neotropical Migratory Bird Conservation Act, USFS Region 5 Partners in Flight |
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Effects of pack station livestock on riparian songbird reproduction in the Eastern Sierra Nevada, California
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Pack station livestock corrals are commonly located within riparian habitat of the eastern Sierra Nevada’s montane zone. Because pack station livestock may threaten songbird populations by providing foraging habitat for the brood parasitic brown-headed cowbird (Molothrus ater), we investigated reproductive success of host species near pack stations at two high elevation aspen-willow sites on Inyo National Forest lands (2001-2004).
Project Contact: Sacha Heath
Funding: Inyo National Forest, United States Forest Service Region 5 Partners in Flight
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| Bird monitoring and habitat assessment in the upper West and East Walker River watersheds, 1998 - 2003. |
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In 1998, PRBO, Bureau of land Management
(BLM) and California Department of Fish and Game (CDFG) implemented standardized riparian songbird monitoring stations in the upper East Walker watersheds as a part of a larger riparian songbird monitoring effort that extended south along the eastern Sierra Nevada through Mono and Inyo Counties.
In 2001 - 2003, PRBO, Humboldt-Toiyabe National Forest, Bridgeport Ranger District and Marine Corps Mountain Warfare Training Center extended the effort throughout the upper East and West Walker River watersheds. We established 266 riparian songbird monitoring stations on 20 transects along 15 streams in the West and East Walker River watersheds.
We determined breeding bird relative abundance, bird species diversity and bird species richness and modeled relationships between these indices a host of vegetation and landscape variables. |
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Project Contact: Sacha Heath
Funding: BLM, CDFG, Humboldt-Toiyabe National Forest, National Fish and Wildlife Foundation, Marine Corp Mountain Warfare Training Center, Sierra Nevada Aquatic Reserach Laboratory
Songbird use of Marble Creek, Mono County, California.
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From 1998 - 2005, the PRBO and the Bureau of Land Management conducted songbird surveys and vegetation assessments on Marble Creek, Mono County, California. The objectives were to determine abundance, richness and diversity of songbirds utilizing Marble Creek, to assess the relationship of these indices to habitat characteristics, and to document changes in the riparian bird community over time, and as a result of changes in grazing management and water diversions.
Project Contact: Sacha Heath
Funding: Bureau of Land Management, National Fish and Wildlife Foundation
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| Upper Owens River Watershed |
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In 1998 - 2004, PRBO censused riparian songbird point counts in the upper Owens River watershed as a part of a larger riparian songbird monitoring effort that extended north the East Walker River watershed and South along the eastern Sierra Nevada to just south of Owens Dry Lake. We determined breeding bird relative abundance, bird species diversity and bird species richness and modeled relationships between these indices a host of vegetation and landscape variables.
Project Contact: Sacha Heath
Funding: BLM, CDFG, Eastern Sierra Audubon Society, National Fish and Wildlife Foundation, Inyo National Forest, Neotropical Migratory Bird Conservation Act, USFS Region 5 Partners in Flight |
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Avian Inventory of the Proposed Mono Basin Outdoor Education Center Site at Parker Creek, California
In 2003 and 2004, PRBO performed a year-round avian inventory of the Mono Lake Committee’s proposed Outdoor Education Center site on Parker Creek, Mono County, California. The project objective was to conduct year round avian surveys at the proposed 8.3 acre (3.36 ha) site in order to determine:
- Seasonal bird species occurrence and breeding status within the proposed site.
- Potential impacts on individuals or populations, and habitats including but not limited to, special status species (e.g. State, Federally or Special Concern listed species).
Project Contact: Sacha Heath
Funding: Mono Lake Committee
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