Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Christian P. Dau"'
Publikováno v:
The Journal of Wildlife Management. 82:362-373
Accurate estimates of the age composition of populations can inform past reproductive success and future population trajectories. We examined fall age ratios (juveniles:total birds) of black brant (Branta bernicla nigricans; brant) staging at Izembek
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60d9ca38d7aaa1ffcb3c5c994ffaad55
https://doi.org/10.1002/jwmg.21388
https://doi.org/10.1002/jwmg.21388
Autor:
Kristine M. Sowl, Mark S. Lindberg, John E. Sarvis, Christian P. Dau, Brandt W. Meixell, Paul B. Conn
Publikováno v:
The Condor. 115:280-289
The population of Tundra Swans (Cygnus columbianus columbianus) breeding on the lower Alaska Peninsula represents the southern extremity of the species' range and is uniquely nonmigratory. We used data on recaptures, resightings, and recoveries of ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca0917df34e6c37faa9b9d1ba3f03d10
https://doi.org/10.1525/cond.2013.110213
https://doi.org/10.1525/cond.2013.110213
Publikováno v:
Journal of Field Ornithology. 71:541-548
Molting adult Steller's Eiders (Polysticta stelleri) were banded at Izembek Lagoon (1961–1998) and Nelson Lagoon (1995–1997) along the lower Alaska Peninsula to determine breeding distribution and movements. Of 52,985 Steller's Eiders banded, 347
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81a1616aa1d9ce35990b7b3affeb6b09
https://doi.org/10.1648/0273-8570-71.3.541
https://doi.org/10.1648/0273-8570-71.3.541
Autor:
David H. Ward, T. Lee Tibbitts, Betty A. Anderson, James S. Sedinger, James E. Hines, Christian P. Dau
Publikováno v:
ARCTIC. 62
Winter distribution of Pacific Flyway brant ( Branta bernicla nigricans ) has shifted northward from low-temperate areas to sub-Arctic areas over the last 42 years. We assessed the winter abundance and distribution of brant in Alaska to evaluate whet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6c36c62acd70fcef90a509ecfc93d66
https://doi.org/10.14430/arctic150
https://doi.org/10.14430/arctic150
Publikováno v:
The Birds of North America Online.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35ecb39d55597670cb2590b48872afb3
https://doi.org/10.2173/bna.547
https://doi.org/10.2173/bna.547
Publikováno v:
ARCTIC. 46
Spectacled eider ( Somateria fischeri ) populations in western Alaska are now less than 4% of the numbers estimated in the early 1970s. In 1992, an estimated 1721 nesting pairs remained on the Yukon-Kuskokwim Delta. Causes of this rapid and continuin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a4a59b625babb2d8b6de5108be3ec2f
https://doi.org/10.14430/arctic1352
https://doi.org/10.14430/arctic1352
Publikováno v:
The Journal of Wildlife Management. 65:248
Numbers of emperor geese (Chen canagica) have remained depressed since the mid-1980s. Despite increases in glaucous gulls (LOTUS hyperboreus), a primary predator of goslings little information existed to assess whether recent patterns of gosling surv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3c48948917fa11cc7a9a303edd4746c
https://doi.org/10.2307/3802904
https://doi.org/10.2307/3802904
Publikováno v:
The Journal of Wildlife Management. 64:261
Populations of Stellers eiders (Polysticta stelleri) molting and wintering along the Alaska Peninsula have decliued since the 1960's. We captured and marked a large sample of Steller's eiders molting in 2 lagoons along the Alaska Peninsula between 19
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b362617333c9b8df77832d9f92b2f55c
https://doi.org/10.2307/3802998
https://doi.org/10.2307/3802998
Publikováno v:
Northwestern Naturalist. 75:81
The number of spectacled eiders (Somateria fischeri) nesting on two study areas near the Kashunuk River, on the central Yukon-Kuskokwim (Y-K) Delta, Alaska, declined by over 75% in the last 20 years. Nesting densities have remained low, but have not
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6835a1ba994d13a9aa87c18a3fd79329
https://doi.org/10.2307/3536829
https://doi.org/10.2307/3536829