TOV is based on integrated monitoring where species and ecosystems are seen in context, providing better opportunities to interpret the results. TOV areas include seven monitoring sites in Boreal birch forest, all nature-protected areas. Lund in the south to Dividalen north is monitoring; lichen and algae on trees, ground vegetation, rodents, passerine birds, grouse, Gyrfalcon and Golden Eagle. There are also 10 Boreal spruce forest areas monitored, only for ground vegetation. The range of areas reflects both climate variability and differences in impacts from long-range pollutants throughout the country.
Monitoring of flora and vegetation includes records of species and species composition of ground vegetation and mosses, lichens and fungi on tree trunks. Fauna monitoring includes population and reproduction monitoring for species which may indicate effects of long-range transboundary air pollution, and population monitoring of key species. In addition, a nationwide survey of selected variables, prevalence of lichen and algae on trees, as well as contaminants in wildlife species and eggs from birds of prey. Observed changes are considered in relation to the influence of anthropogenic factors.
Norwegian Environment Agency (https://tov.miljodirektoratet.no/)
Norwegian Institute for Nature Research (http://www.nina.no/)
Vegetation mapping and analysis, topography, soil chemistry, soil physics, rodent censuses, breeding success of selected raptors, population density of willow grouse, population density of passerine birds, extensive monitoring of breeding terrestrial birds, quicksilver and organic pollutants in raptors (egg analysis).
Norwegian Directorate for Nature Management (DN), Norwegian Institute for Water Research (NIVA)
NIVA is directly involved in sampling, analyses and reporting Networks: Convention on Biological Diversity (CBD), European Environment Agency (EEA)