Burkina Faso DPSIR Deleatidium Environmental science, engineering & technology Museu Calouste Gulbenkian Southeastern Europe Technology: general issues USA agricultural land use antagonism anthropogenic pressure stressor anthropogenic pressures bird assemblages climate change croplands dissolved oxygen fish assemblages fish passes fisheries management functional distance global change grazer-scrapers historical data hydromorphology interaction interviews lake systems land use large rivers least-cost modeling