Wintering survival of insect-eating passerines in southern Europe
نویسندگان
چکیده
منابع مشابه
Simulation study of past survival trends in over-wintering of wheat in Iran
The snow-cover on soil, the factor that protects wheat from the biting cold, has generally declined; on the other hand, the surface air temperature has warmed. It is not clear whether these changes decrease winter-killing of wheat or favor it in Iran. Therefore, this study was mainly aimed to determine the past trend in frequency of winter-kill events (Y) for wheat with -4 oC frost tolerance, u...
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We estimated local annual survival of 1,051 individually color-banded Dunlin (Calidris alpina) at Bolinas Lagoon, California from 1979 to 1992. Resighting rates for birds banded as adults varied significantly among years, and resighting rates for first-year birds varied by sex and year. No significant differences in local survival rates were found between males and females in any age classes. F...
متن کاملQuantifying the threshold frost hardiness for over-wintering survival of wheat in Iran, using simulation
The value of frost tolerance in wheat is increased with decreasing the temperature in late autumn and/or early winter (phase I, acclimation), then shows plateau state for a period with the coldest temperature (II), finally appears to decrease with warming the temperature (III, de-acclimation). This study was aimed to determine the threshold frost hardiness in wheat for avoiding ...
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Historically, southern right whales were widely distributed in New Zealand waters. This population, was driven to commercial extinction following extensive exploitation during the early 19th century (Dawbin 1986). It was further depleted by illegal Soviet hunting in 1950-1970 (Tormosov et al. 1998). While right whale sightings around mainland New Zealand remain rare, up to 165 whales can be fou...
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ژورنال
عنوان ژورنال: Bird Study
سال: 2012
ISSN: 0006-3657,1944-6705
DOI: 10.1080/00063657.2011.623765