Isa Woo (Former Employee)
Science and Products
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Home range, habitat selection, and movements of California Black Rails at tidal marshes at San Francisco Bay, California Home range, habitat selection, and movements of California Black Rails at tidal marshes at San Francisco Bay, California
Little is known about the movements and habitat selection of California Black Rails (Laterallus jamaicensis coturniculus) in coastal California. We captured 130 Black Rails, of which we radio-marked 48, in tidal marshes in San Francisco Bay during 2005 and 2006. Our objective was to examine their home ranges, movements, and habitat selection to improve the species' conservation. The mean...
Authors
Danika Tsao, John Takekawa, Isa Woo, Julie Yee, Jules Evens
Potential effects of mercury on threatened California black rails Potential effects of mercury on threatened California black rails
San Francisco Bay (SFB) estuary sediments contain high levels of mercury (Hg), and tidal marsh resident species may be vulnerable to Hg contamination. We examined Hg concentrations in California black rails, a threatened waterbird species that inhabits SFB tidal salt marshes. We captured 127 black rails during the prebreeding and postbreeding seasons and examined the influence of site...
Authors
Danika Tsao, A. Miles, John Takekawa, Isa Woo
Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay
The Tolay Creek Watershed drains approximately 3,520 ha along the northern edge of San Francisco Bay. Surrounded by a mosaic of open space conservation easements and public wildlife areas, it is one of the only watersheds in this urbanized estuary that is protected from its headwaters to the bay. Tolay Lake is a seasonal, spring-fed lake found in the upper watershed that historically...
Authors
Isa Woo, Rune Storesund, John Takekawa, Rachel Gardiner, Steve Ehret
Can nutrients alone shift a sedge meadow towards dominance by the invasive Typha × glauca Can nutrients alone shift a sedge meadow towards dominance by the invasive Typha × glauca
Where wetlands receive urban runoff, Typha spp. and other invasive plants often displace the native vegetation. We tested the ability of nutrients (N and P) to increase vegetative growth of T. × glauca(a hybrid of T. latifolia and T. angustifolia). In the greenhouse, 17 treatments revealed that T. × glauca required both N and P for growth, and total leaf length was most stimulated where...
Authors
Isa Woo, Joy Zedler
Science and Products
Filter Total Items: 15
No Result Found
Filter Total Items: 40
Home range, habitat selection, and movements of California Black Rails at tidal marshes at San Francisco Bay, California Home range, habitat selection, and movements of California Black Rails at tidal marshes at San Francisco Bay, California
Little is known about the movements and habitat selection of California Black Rails (Laterallus jamaicensis coturniculus) in coastal California. We captured 130 Black Rails, of which we radio-marked 48, in tidal marshes in San Francisco Bay during 2005 and 2006. Our objective was to examine their home ranges, movements, and habitat selection to improve the species' conservation. The mean...
Authors
Danika Tsao, John Takekawa, Isa Woo, Julie Yee, Jules Evens
Potential effects of mercury on threatened California black rails Potential effects of mercury on threatened California black rails
San Francisco Bay (SFB) estuary sediments contain high levels of mercury (Hg), and tidal marsh resident species may be vulnerable to Hg contamination. We examined Hg concentrations in California black rails, a threatened waterbird species that inhabits SFB tidal salt marshes. We captured 127 black rails during the prebreeding and postbreeding seasons and examined the influence of site...
Authors
Danika Tsao, A. Miles, John Takekawa, Isa Woo
Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay
The Tolay Creek Watershed drains approximately 3,520 ha along the northern edge of San Francisco Bay. Surrounded by a mosaic of open space conservation easements and public wildlife areas, it is one of the only watersheds in this urbanized estuary that is protected from its headwaters to the bay. Tolay Lake is a seasonal, spring-fed lake found in the upper watershed that historically...
Authors
Isa Woo, Rune Storesund, John Takekawa, Rachel Gardiner, Steve Ehret
Can nutrients alone shift a sedge meadow towards dominance by the invasive Typha × glauca Can nutrients alone shift a sedge meadow towards dominance by the invasive Typha × glauca
Where wetlands receive urban runoff, Typha spp. and other invasive plants often displace the native vegetation. We tested the ability of nutrients (N and P) to increase vegetative growth of T. × glauca(a hybrid of T. latifolia and T. angustifolia). In the greenhouse, 17 treatments revealed that T. × glauca required both N and P for growth, and total leaf length was most stimulated where...
Authors
Isa Woo, Joy Zedler