منابع مشابه
Contaminants and sea ducks in Alaska and the circumpolar region.
We review nesting sea duck population declines in Alaska during recent decades and explore the possibility that contaminants may be implicated. Aerial surveys of the surf scoter (Melanitta perspicillata), white-winged scoter (M. fusca), black scoter (M. nigra), oldsqaw (Clangula hyemalis), spectacled eider (Somateria fischeri), and Steller's eider (Polysticta stellei) show long-term breeding po...
متن کاملthe effect of biofertilizer and phosphorus fertilizer banding with zinc on white bean (phaseolus vulgaris l.)
in order to evaluate the effect of using zinc granulated phosphorous biofertilizer on yield and yield components of white bean (phaseolus vulgaris l.), a field experiment based on a randomized complete block design with three replications was performed. experimental treatment were included of using phosphate and triple super phosphorous chemical fertilizer at five levels (without using of chemi...
متن کاملGoal-dependent current compensation and drift in surf scoter flocks
BACKGROUND Animals moving through air or water toward a goal frequently must contend with fluid currents, which can drift the actual path of the animal away from the direction of heading. Whether, and to what degree, animals compensate for currents depends on the species and environmental context, but plays an important role in the movement ecology of the species. In this paper, flocks of surf ...
متن کاملWinged migration
It is an honor to become a part of the talented group of cell biologists who have received this award before me. While running a research group certainly has its ups and downs, I love being a faculty member and am continuously excited by the prospect of scientific discoveries yet to be made. I have benefited from the support of many people over the years and hope to be able to do the same for o...
متن کاملHabitat Use by Wintering Surf and White-Winged Scoters: Effects of Environmental Attributes and Shellfish Aquaculture
Shellfish aquaculture is an expanding industry in coastal British Columbia, Canada, and occurs in important wintering areas for surf scoters (Melanitta perspicillata) and white-winged scoters (M. fusca). We quantified habitat use by scoters in relation to natural environmental attributes and habitat modifications associated with shellfish aquaculture. We found that, despite the extensive clam a...
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ژورنال
عنوان ژورنال: Blue Jay
سال: 1955
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay1788