Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Daniel J. Rizzolo"'
Publikováno v:
The Journal of Wildlife Management. 85:909-919
Publikováno v:
Ringing & Migration. 31:19-22
A variety of methods such as night-lighting and lift nets have been used to catch divers (Gavidae), although 24-hour daylight in the Arctic summer and the remote nature of field sites can make the use of these traditional methods impossible. Our rese
Publikováno v:
The Auk. 132:657-670
Environmental conditions can exert a strong influence on the growth and energy demands of chicks. We hypothesized that postnatal growth in a cold, aquatic environment would require a high level of energy metabolism in semiprecocial Red-throated Loon
Publikováno v:
The Condor. 116:574-587
Red-throated Loon (Gavia stellata) numbers in Alaska have fluctuated dramatically over the past 3 decades; however, the demographic processes contributing to these population dynamics are poorly understood. To examine spatial and temporal variation i
Publikováno v:
Ibis. 151:523-534
Parental brood attendance patterns vary greatly among shorebird species. For monogamous calidridine species, biparental care with female-first brood departure is most common. It is believed that adult sandpipers balance potential individual survival
Autor:
Kendall Mashburn, Daniel Esler, Pamela A. Tuomi, Tuula E. Hollmén, Peter B. Nilsson, Daniel M. Mulcahy, Daniel J. Rizzolo, Shannon Atkinson
Publikováno v:
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology. 149:275-283
Little is known about baseline concentrations of adrenal hormones and hormonal responses to stress in sea ducks, although significant population declines documented in several species suggest that sea ducks are exposed to increased levels of environm
Autor:
Daniel J. Rizzolo, Joel A. Schmutz
Publikováno v:
Waterbirds. 30:207-213
We used Pacific Loon (Gavia pacifica) and Red-throated Loon (G. stellata) nests with known ages to gauge the efficacy of egg flotation for determining nest age in coastal Alaska. Egg flotation accurately estimated nest age for both species; the mean
Publikováno v:
The Condor. 108:480-483
In a recent paper on Harlequin Duck (Histrionicus histrionicus) interannual site fidelity (Iverson et al. 2004), we concluded that wintering populations were demographically structured at a finer geographic scale than that at which genetic differenti
Publikováno v:
Scopus-Elsevier
We used capture-mark-recapture data to assess winter philopatry by Harlequin Ducks (Histrionicus histrionicus) in Prince William Sound, Alaska, during winters 1995–1997 and 2000–2001. Philopatry was quantified using homing rates, which were estim
Autor:
Patrick G. R. Jodice, Daniel D. Roby, Michelle Antolos, Donald E. Lyons, Daniel J. Rizzolo, Sadie K. Wright, Cynthia D. Anderson, Scott K. Anderson, S. Kim Nelson, Adrian E. Gall, Liv Wennerberg
Publikováno v:
The Auk. 120:240-245