Distribution of Ground-Nesting Marine Birds Along Shorelines in Glacier Bay, Southeastern Alaska: An Assessment Related to Potential Disturbance by Back-Country Users
Glacier Bay National Park and Preserve in southeastern Alaska contains a diverse assemblage of marine birds that use the area for nesting, foraging, wintering, and molting. The abundance and diversity of marine bird species in Glacier Bay are unmatched in the region, owing in part to the geomorphic and successional characteristics that result in a wide array of habitat types (Drew and others, 2007). The marine bird community includes several species that nest along shorelines on the ground, either solitarily, or in small colonies. The shorelines used for nesting by these birds generally are beaches and river outwashes. Shorelines in Glacier Bay are complex, with geophysical attributes ranging from steep bedrock cliffs to vast sand and silt tide flats. Cobble and boulder outwashes are common where drainages meet the shore, whereas braided sandy channels characterize many of the glacial outwashes. The abundant pebble beaches are used for landing kayaks—a common means of visiting the backcountry, and for camping. Marine bird nests along the shoreline are susceptible to human disturbance because they are highly dispersed and cryptic and therefore not easily detected.
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Distribution of Ground-Nesting Marine Birds Along Shorelines in Glacier Bay, Southeastern Alaska: An Assessment Related to Potential Disturbance by Back-Country Users
Glacier Bay National Park and Preserve in southeastern Alaska contains a diverse assemblage of marine birds that use the area for nesting, foraging, wintering, and molting. The abundance and diversity of marine bird species in Glacier Bay are unmatched in the region, owing in part to the geomorphic and successional characteristics that result in a wide array of habitat types (Drew and others, 2007). The marine bird community includes several species that nest along shorelines on the ground, either solitarily, or in small colonies. The shorelines used for nesting by these birds generally are beaches and river outwashes. Shorelines in Glacier Bay are complex, with geophysical attributes ranging from steep bedrock cliffs to vast sand and silt tide flats. Cobble and boulder outwashes are common where drainages meet the shore, whereas braided sandy channels characterize many of the glacial outwashes. The abundant pebble beaches are used for landing kayaks—a common means of visiting the backcountry, and for camping. Marine bird nests along the shoreline are susceptible to human disturbance because they are highly dispersed and cryptic and therefore not easily detected.
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Distribution of Ground-Nesting Marine Birds Along Shorelines in Glacier Bay, Southeastern Alaska: An Assessment Related to Potential Disturbance by Back-Country Users
Distribution of Ground-Nesting Marine Birds Along Shorelines in Glacier Bay, Southeastern Alaska: An Assessment Related to Potential Disturbance by Back-Country Users
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Product Details
| BN ID: | 2940014383035 |
|---|---|
| Publisher: | The Delano Max Wealth Institute, LLC. |
| Publication date: | 05/01/2012 |
| Sold by: | Barnes & Noble |
| Format: | eBook |
| File size: | 6 MB |
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