anthropogenic load

Изменение пищевого спектра муравьев рода Formica s. str. (Hymenoptera, Formicidae) на территориях Саратовской области с антропогенной нагрузкой

Authors: Muldagalieva N. S.

Ants are essential component of ecosystems. They participate in soil formation, regulate the number of insects and spread the seeds of plants. The species of the genus Formica are most noticeable in the forests of the middle zone of Russia. The number and diversity of the prey of ants decreases in the areas experiencing a recreational load. The study was conducted on the territory of the natural park “Kumysnaya Polyana” (Saratov). The forest park is experiencing an anthropogenic load because it is located on the territory of a large industrial center – the city of Saratov. To study the Н.

Seasonal Dynamics of Nutrition American Mink (Neovison Vison Schreber, 1777) in the Coastal Zone River B. Irgiz

Authors: Savonin A. A., Shlyakhtin G. V., Filipechev A. O.

Spend seasonal estimation diet of American mink on the river B. Irgiz between 2000 and 2011. The basis of nutrition predator: spring – amphibians (24.5% BIO), crayfish (43.1% BIO), mammals (21.3% BIO); summer – fish (29.3% BIO), amphibians (22.6% BIO), mammals (13.3% BIO); autumn – amphibians (43.3% BIO), fish (15.5% BIO), mammals (11.8% BIO); winter – fish (30.8% BIO); mammals (30.1% BIO). The regularities of changes in the composition of the diet in the conditions of anthropogenic load. The highest trophic niche fixed summer (BA = =0.76), the lowest – in the winter (BA = 0.12).