The pelagic juvenile stage of sea turtles is poorly studied. We present a growth model and estimates for duration of the pelagic juvenile stage for loggerhead sea turtles Caretta caretta in the North Atlantic based on length-frequency analyses and sizes of young-of-the-year stranded in the Azores. The size-specific growth model is a monotonic, nonlinear, declining function. The growth model is ...

The density-dependent rates of population growth were determined for 26 populations of Drosophila melanogaster maintained in the serial transfer system. Twenty-five populations were homozygous for an entire chromosome 2 sampled from nature; the other was a random heterozygous population. Rates of population growth around the carrying capacity cannot explain the large fitness depression of these...

the article provides the analysis of death rates in road traffic accidents in kazakhstan from 2004 to 2010 and explores the use of sanitary aviation.data of fatalities caused by road traffic accidents were collected and analysed. descriptive and analytical methods of epidemiology and biomedical statistics were applied.totaly 27,003 people died as a result of road traffic accidents in this perio...

The demographic transition in the Arab countries of Western Asia in general has been somewhat peculiar. Total fertility rose substantially before it began its historical decline. Life expectancy rose at a very fast pace. The very high fertility rates, resulted in an extremely youthful populations which, combined with low mortality schedules, resulted in crude death rates (CDRs) of 3 to 4 per th...

Declines in fertility and population growth rates in the Pacific have lagged behind trends in other developing countries. In Pacific countries, most of which lack policy and public support for effective family planning and emigration outlets, rates of population growth remain among the highest in the world. The effect that high population growth rates have had in slowing economic growth appears...

Global circulation models predict and numerous observations confirm that anthropogenic climate change has altered high-frequency climate variability. However, it is not yet well understood how changing patterns of environmental variation will affect wildlife population dynamics and other ecological processes. Theory predicts that a population's long-run growth rate is diminished and the chance ...