1. The Rybinsk Reservoir receives about 6 kg of pollen and spores per ha annually ( after date obtained for the inshore zone at Borok in 1959). 2. There are two peaks in the quantity of pollen and spores — in the beginning of May (mainly Betula pollen) and in the first half of October (mainly fungal spores; see the figure). 3. Allochthonous pollen and spores in water bodies may constitute a food resource for aquatic animals, mainly a sourse of vitamines for aquatic animals.
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