The name comes from the old Slavonic word for oak tree, "dub." Dubrava is an oak grove, and Dubravka is name for an oak fores nymph, a sprite-- "clever, mischievous, and possessing magical powers" (thefreedictionary.com).
A nymph is a mythical spirit, a lesser deity that lives in locations that include the woods and rivers. It is also a form of an insect that is immature. The way she adapted to the water, she could be a water nymph.
I believe the question to be, "Is an oak tree an herbivore?" The answer to this question is no, an oak tree is not an herbivore. Herbivores are animals that eat plants. An oak tree is a plant, not an animal, so therefore it can not be an herbivore.
well that depends on what oak tree it is and where it grows but a average undisturbed oak tree can live for 500-600 years. but for example a oak tree that lives in England can live for 400 - 500 years.