JJournal of Soils and Sediments4/27/2026Heavy metals and biogenic elements in the bottom sediments of beaver ponds: A case study of small rivers of the Volga Upland’s far North (European Russia)Aidar Sharifullin·Achim A. Beylich·Artyom V. Gusarov·Dmitry V. IvanovRead at Journal of Soils and SedimentsTagsEcology and biodiversity studiesEcology