global warming and body mass decline in israeli passerine birds. | global warming may affect the physiology, distributions, phenology and adaptations of plants and animals. in israel, minimum summer temperatures increased by an average of 0.26 degrees c per decade during the second half of the 20th century. bergmann's rule predicts that, in warm-blooded animals, races from warm regions are smaller than races from cold regions. numerous studies have reported general correlations between body mass in fossil animals and independently established palaeoclimatic cha ... | 2001 | 11370968 |