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Cheryl Horton (Former Employee)

Science and Products

Abundance and productivity of Marbled Murrelets (Brachyramphus marmoratus) off central California during the 2020 and 2021 breeding seasons

Marbled murrelets (Brachyramphus marmoratus) have been listed as “endangered” by the State of California and “threatened” by the U.S. Fish and Wildlife Service since 1992 in California, Oregon, and Washington. Information regarding marbled murrelet abundance, distribution, population trends, and habitat associations is critical for risk assessment, effective management, evaluation of conservation
Authors
Jonathan J. Felis, Josh Adams, Cheryl Horton, Emily C. Kelsey, Laney M. White
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)

Abundance and productivity of marbled murrelets (Brachyramphus marmoratus) off central California during the 2019 breeding season

Marbled murrelets (Brachyramphus marmoratus) have been listed as “endangered” by the State of California and “threatened” by the U.S. Fish and Wildlife Service since 1992 in California, Oregon, and Washington. Information regarding marbled murrelet abundance, distribution, population trends, and habitat associations is critical for risk assessment, effective management, evaluation of conservation
Authors
Jonathan J. Felis, Emily C. Kelsey, Josh Adams, Cheryl Horton, Laura (Laney) White
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)
link
An enormous rock in the ocean viewed from above, with the coast behind and sunlight on the water.

Aerial Seabird and Marine Mammal Surveys

The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions. The project is supported by the Bureau of Ocean Energy Management and will inform planning in advance of potential offshore wind energy development along the...
By
Ecosystems Mission Area, Species Management Research Program, Western Ecological Research Center (WERC)
link

Aerial Seabird and Marine Mammal Surveys

The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions. The project is supported by the Bureau of Ocean Energy Management and will inform planning in advance of potential offshore wind energy development along the...
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Photo of scientist climbing an island off the coast of Big Sur

Santa Cruz Field Station

Scientists at the Santa Cruz Field Station study sea otters and seabirds in their environment. The USGS Western Ecological Research Center has two research missions based in the Santa Cruz region:
By
Western Ecological Research Center (WERC)
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Santa Cruz Field Station

Scientists at the Santa Cruz Field Station study sea otters and seabirds in their environment. The USGS Western Ecological Research Center has two research missions based in the Santa Cruz region:
Learn More

Digital Imagery Used for Aerial Counts for Surface-Nesting Seabirds at Lehua Island and Moku Manu Islet and Ulupa'u Crater, O'ahu in 2019

This data release is a product of Atlas of Breeding Seabirds of the Main Hawaiian Islands (https://www.sciencebase.gov/catalog/item/5fc0045cd34e4b9faad7ef37). Specific results and details about methods and additional information useful for interpreting these data can be found in the data series report: Adams, J., Kelsey, E.C., Stenske, J., and Felis, J.J., 2022, Aerial counts for surface-nesting s
By
Western Ecological Research Center (WERC)

Science and Products