Система менеджмента качества компании   сертифицирована по стандарту ГОСТ Р ИСО 9001:2011 в части проектирования и производства   электронагревателей   и изделий электрометрии

My offer still stands to give you some data on two water sheds or two sites, one with less human impact than the other and you could compare the data. You could also go to them as part of it to see what differences you see first hand.

Yes having your sites on opposite sides of a major divide can cause you some trouble when trying to make comparisons in the fish or invertebrate communities. Might be able to help you out with the collecting part but my free time is pretty limited so Im not making any promises on that side of things.