Oak galls (Hymenoptera insect Cynipidae) on the branches of oak in a broad-leaved forest in the territory of the low-mountain massif of Strandja (Strandzha). Natural Park "Strandzha" - the largest protected area in Bulgaria, Burgas region, near the village of Chernomorets.
Image author - Alexander Bogolyubov, April-August, 2011-2017
From Photo Nature section of our site you can also download thousands images of fungi, lichens, plants and animals, made by professional Russian field biologists and geographers during their expeditions all over the Russia and former USSR republics. All objects from our collection are determined by scientist and have exact scientific name, date and place of taking picture, as well as size of the original image.
You are able to find necessary pictures using four different approach:
1) with a help of Geographic Index (all objects are separated by countries and nature geographical zones), 2) with a help of Systematic Index (all objects are separated by their systematic position),
3) with a help of Alphabetical Index (all objects are separated by their scientific Latin names according to the alphabet), and
4) with a help of Search Form (you can search scientific (Latin) names of species, genus, family, or order).
Our Field Ecology Center published more than
180 methodical materials for nature studies. Some of them are in English: