Kaarle Kenttämies

TL;DR: The results from the studied agricultural catchments and rivers during the period 1981–1997 suggest that weather-driven fluctuation in discharge was usually the main reason for changes in nutrient losses, and little or no impact of changes in agricultural production or management practices can be observed.

TL;DR: The results indicate that plugged outlet ditches and associated narrow overland flow areas do not function as proper buffers in peatland areas and suggest that wider buffers with extensive over land flow areas are needed in order to control diffuse pollution from forested and drained peatlands.

TL;DR: The development of the spatial N export and retention model N_EXRET for large river basins is presented, utilizing remote-sensing-based land use and forest classification to describe the contribution from agriculture, forestry and peat harvesting.

TL;DR: In this article, the acidification history and areal distribution of acidification of Finnish lakes were studied. But the results were limited to 30 lakes and they did not represent statistically all lakes in Finland but are the most interesting, sensitive lakes.

TL;DR: The aim of this study was to determine the origin and timing of inorganic nitrogen loading to the Simojoki using the dynamic, semi-distributed INCA-N model, and results showed that, at the river outlet, only about half of the in organic nitrogen load originated from anthropogenic sources.