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Izv Akad Nauk Ser Biol ; (3): 357-67, 2013.
Article in Russian | MEDLINE | ID: mdl-24171317

ABSTRACT

The notion of a dynamic compensatory system is discussed, characterized by the alternation of species occupying the leading position in bumblebee taxocenoses, while the total density of these pollinators in island ecosystems remains at similar levels. The functioning of the compensatory system is regulated by both abiotic factors (the weather and climate) and biotic factors (competition for trophic resources). The stability of the system is determined by the presence of reserve compensatory species capable of rapid population growth against the background of depressed abundance of other species under changing environmental conditions.


Subject(s)
Ecosystem , Hymenoptera/physiology , Population Density , Animals , Bees/physiology , Environment , Islands
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