Seasonal Characterisation and Trends Study of Nutrient Concentrations in Surface Water from Catchments with Intensive Livestock Farming

Berzina, L., Sudars, R., Jansons, V. Impact of intensive livestock farming on surface water quality in Latvia. Water Management Engineering, Transactions of the Lithuanian University of Agriculture, 2008, N 34, p. 106-117Search in Google Scholar

Criteria for Inclusion and Deletion of Hot Spots. Helsinki: HELCOM, 2010-[viewed 1.10.2010.]. Available: http://www.helcom.fi/stc/files/Projects/JCP/Criteriahotspots.pdfSearch in Google Scholar

Dzalbe, I., Jansons, V., Bušmanis, P., Sudars, R. Agriculture impact assessment with agro-environmental indicators. Proceedings of the Latvia University of Agriculture, 2005, vol. 15, N 310, p. 9-16Search in Google Scholar

Hirsch, R. M., Slack, J. R. A nonparametric trend test for seasonal data with serial dependence. Water Resources Research, 1984, vol. 20, p. 727-732.10.1029/WR020i006p00727Search in Google Scholar

Kyllmar, K., Carlsson, C., Gustafson, A., Ulen, B., Johnsson H. Nutrient discharge from small agricultural catchments in Sweden. Characterisation and trends. Agriculture, Agriculture, Ecosystems and Environment, 2006, N 115, p 15-2610.1016/j.agee.2005.12.004Search in Google Scholar

Lagzdiņš, A., Jansons, V., Abramenko, K. Ūdeņu kvalitātes standarta noteikšana pēc biogēno elementu koncentrācijas notecē no lauksaimniecībā izmantotajām platībām. [Seting of the Water Quality Standarts for Nutrients in Runoff from Agricultural Land] LLU Raksti, 2008, Vol. 21, N 315, p. 96-105Search in Google Scholar

Pachel, K., Loigu, E., Ital, A., Pihlak, M., Leisk, Ü. (2010). Recent trends in nutrient concentrations in Estonian rivers as a response to large-scale changes in land-use intensity and life-styles. Journal of Environmental Monitoring, 210, N 12, p. 178-188.Search in Google Scholar

Sileika, A.S, Gaigalis, K., Kutra, G., Smitiene, A. Factors affecting N and P losses from small catchments (Lithuania). Environmental Monitoring and Assessment, 2005, N 102 p. 359-37410.1007/s10661-005-6033-3Search in Google Scholar

Stalnacke, P., Grimvall, A., Libiseller, C., Laznik, M., Kokorite, I. Trends in nutrient concentrations in Latvian rivers and the response to the dramatic change in agriculture. Journal of Hydrology, 2003, vol. 8, N 283, p. 184-20510.1016/S0022-1694(03)00266-XSearch in Google Scholar

Sudars, R., Jansons, V., Kłaviņš, U., Dzalbe, I. Intensīvas lopkopības ietekme uz ūdens vidi. LLU Raksti, 2005, vol. 15 N 310, p. 40-49Search in Google Scholar

van Dijk, G. M., van Liere, L., Amiraal, W., Bannink, B. A., Cappon, J. J. Present state of the water quality of European rivers and implications for management. Science of Totalal Environment, 1994, N 145, p. 187-19510.1016/0048-9697(94)90309-3Search in Google Scholar