Pacific Eider Breeding Biology and Habitat Use on the Seward Peninsula, Alaska
Author : Anne Christine Seguin
Publisher :
Page : 260 pages
File Size : 28,13 MB
Release : 1981
Category : Birds
ISBN :
Author : Anne Christine Seguin
Publisher :
Page : 260 pages
File Size : 28,13 MB
Release : 1981
Category : Birds
ISBN :
Author :
Publisher :
Page : 474 pages
File Size : 21,86 MB
Release : 1984
Category : Wildlife conservation
ISBN :
Author : Brina Kessel
Publisher :
Page : 352 pages
File Size : 20,47 MB
Release : 1989
Category : Nature
ISBN :
Bird watchers, ornithologists, and wildlife managers will find in Birds of the Seward Peninsula, Alaska virtually all the information available about Seward Peninsula birds - from rare visitants to overwinterers and regular summer residents. The book is packed with details of distribution and abundance, habitats, nesting and feeding habits, and more, both for birds common to our continent and those that come from Asia.
Author : Douglas L. Schamel
Publisher :
Page : 190 pages
File Size : 17,43 MB
Release : 1974
Category : Birds
ISBN :
Author : Abby Neva Powell
Publisher :
Page : 80 pages
File Size : 48,41 MB
Release : 2005
Category : King eider
ISBN :
Author : Abby Powell
Publisher : CreateSpace
Page : 40 pages
File Size : 36,62 MB
Release : 2015-06-26
Category :
ISBN : 9781514724880
Little is known about the breeding biology of King Eiders (Somateria spectabilis), partly because they typically nest in remote areas, in low densities. The western North American population of King Eiders declined by more than 50% between 1976 and 1996 for unknown reasons (Suydam et al. 2000). Additionally, the National Petroleum Reserve-Alaska (NPR-A) is being leased for oil and gas exploration and may potentially be developed. The highest known density of nesting King Eiders on the north slope of Alaska is within the northeast planning areas of NPR-A (Larned et al. 2003). During the summers of 2002 and 2003, we studied King Eiders in an area to the southeast of Teshekpuk Lake within the NPR-A, and in the Kuparuk oilfields on the North Slope of Alaska to provide information on their basic breeding biology and habitat use. We compared timing of nesting, nest success, and habitat use between a relatively undisturbed site at Teshekpuk Lake and the active Kuparuk oilfield.
Author :
Publisher :
Page : 538 pages
File Size : 15,46 MB
Release : 1983
Category : Dissertations, Academic
ISBN :
Author :
Publisher :
Page : 196 pages
File Size : 21,89 MB
Release : 1983
Category : Bering Sea
ISBN :
Author : Nathan R. Graff
Publisher :
Page : 160 pages
File Size : 11,23 MB
Release : 2021
Category : Spectacled eider
ISBN :
Spectacled eiders (Somateria fischeri) nest and raise their broods in coastal areas of the Yukon-Kuskokwim Delta, which may be vulnerable to projected climate change effects of increased temperatures, storms, and sea level rise. These changes in turn will likely affect wetland salinity levels used by ducklings, which are a potential constraint to growth and survival of young ducklings while their salt glands develop. To examine this potential concern, I investigated spatial and temporal pond salinity dynamics, food availability, and habitat use of spectacled eider broods at Kigigak Island, AK during 2011-2012. I found that salinity was highly variable across the island, ranging from 0-23.9 ppt and averaged 4.9-12.9 ppt in ponds at brood observation sites during the first 30 days of brood rearing. Salinity typically increased through the summer across all habitat types, but at the highest rate in high sedge habitat. The most common invertebrate taxonomic groups included Eurytemora, Harpacticoida, Annelida, and Chironomidae, which were found in nearly all ponds sampled with salinity ranging from 0.7- 16.1 ppt. Neither salinity nor invertebrate abundance explained pond foraging use by broods. Additionally, I used robust design occupancy models to estimate brood foraging patterns. Pond occupancy ranged from 0.43-0.59 between years. Overall, brood use of ponds was not dictated by salinity levels or invertebrates present, suggesting that most ponds provide suitable brood rearing habitat. I did not detect any obvious constraint to pond use within brood rearing habitat under the environmental conditions encountered.
Author : Erika L. McDonald
Publisher :
Page : 204 pages
File Size : 39,62 MB
Release : 2008
Category : Birds
ISBN :