Temporal and Spatial Variation of Nutrient Leaching from Agricultural Land in Latvia: Long Term Trends in Retention and Nutrient Loss in a Drainage and Small Catchment Scale

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, water Management Institute of Lithuania. 2008. (34), ISSN 1382-2335, p.106-117.Search in Google Scholar

Deelstra, J., Eggestad, H. O., Iital, A., Jansons, V. Hydrology in small agricultural catchments; pathways and their impact on nutrient and soil loss. In: Hermann, A. & Schumann, S. (Eds). International Workshop on Status and perspectives of Hydrology in Small basins. Hahnenklee, Germany, 2009. ISBN 978-3-89720-996-1, p. 75-79.Search in Google Scholar

Deelstra, J., Eggestad, H. O., Iital, A., Jansons, V. & Barkved L. J. Time resoslution and hydrological characteristics in agricultural catchments. IAHS Publ. 336, 2010. ISBN 978-1-907161-08-7, p. 138-143.Search in Google Scholar

Directive 2000/60/EC of the European Parliament and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy. Official Journal of the European Communities. 22.12.2000. p. L327/1-L327/72.Search in Google Scholar

Draft Guidelines for the Monitoring Required under the Nitrates Directive, updated 26/03/2003. Nitrate Commission. Brussels.Search in Google Scholar

Iital, A., Pachel, K., Loigu, E., Pihlak, M., and Leisk, U. 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. 12 (2010), p. 178-188.Search in Google Scholar

Haraldsen, T. K., Jansons, V., Spricis, A., Sudars, V, and Vagstad, N. Influence of long-term heavy applications of pig slurry on soil and water quality in Latvia. In: Towards Sustainable Land Use. Advances in GeoEcology 31. Reiskirchen, Germany. 1998. p. 621-628.Search in Google Scholar

Jansons V. (1996). Lauksaimniecības noteču monitorings Latvijā [Monitoring of agricultural run-off in Latvia]. LLU raksti Nr. 6 (283), Jelgava, 109-115. 1pp. (in Latvian).Search in Google Scholar

Jansons V., Vagstad N., Deelstra., J. Nutrient losses from agricultural areas in Latvia. In: Agriculture and the Environment. Challenges and Conflicts for New Millenium. Turner, S; Alford, D. (ed.). Proceedings of ADAS conference 14-16 April 1999. University of Warwick, England. p. 83-92.Search in Google Scholar

Jansons, V., Vagstad, N., Sudars, R., Deelstra, J., Dzalbe, I., Kirsteina D. Nutrient Losses from Point and Diffuse Agricultural Sources in Latvia. Landbauforschnung Volkenrode. Volume 1, (52/1). 2002. p 9-17.Search in Google Scholar

Jansons, V., Busmanis P., Dzalbe I. and Kirsteina D. Catchment and drainage field nitrogen balances and nitrogen loss in three agriculturally influenced Latvian watersheds. European Journal of Agronomy 2003. Volume 20. p. 173-179.10.1016/S1161-0301(03)00072-8Search in Google Scholar

Jansons, V., Sudars, R., Kļaviņš, U. Vides risku vadība lauksaimniecībā. [Management of the Environmental Risk in Agriculture]. In: Monogrāfija: Lauksaimniecības un pārtikas risku vadība. 2007. Jelgava. 494.-503. 1pp. (in Latvian).Search in Google Scholar

Jansons, V., Abramenko, K., Timbare, R., A. Lagzdiņš., Vircavs, V. Lauksaimniecības izraisītā nitrātu piesārņojuma riska analīze Latvijā. (Risk assessment of the agricultural pollution with nitrates in Latvia). Monogrāfija: Lauksaimniecības un pārtikas risku vadība. 2007. Jelgava, p.525-543. (in Latvian).Search in Google Scholar

Jansons, V., Abramenko, K., Timbare, R., Bērziņa, L. Risk assessment of the agricultural pollution with nitrates in Latvia. In: Proceedings of Latvia University of Agriculture 2009. No. 22 (316), ISSN 1407-4427. p.1-11.Search in Google Scholar

Jansons, V., Sudars, R. Dimensions of Agri-Environmental Research in the Department of Environmental Engineering and Water Management. In: Proceedings of the International Scientific Conference. Latvia University of Agriculture-70. 2009. ISBN 978-9984-48-007-7, Jelgava. p. 47-58.Search in Google Scholar

Krams, M., Ziverts, A. 1993. Experiment of conceptual mathematical ground water dynamics and run-off modeling in Latvia. Nordic Hydrology, vol.24, No.4.Search in Google Scholar

Lagzdiņš, A., Jansons, V., Abramenko, K. Setting of the Water Quality Standards for Nutrients in Runoff from Agricultural Land (Ūdeņu kvalitātes standarta noteikšana pēc biogēno elementu koncentrācijas notecē no lauksaimniecībā izmantotajām platībām). LLU Raksti 21 (315), 2008; p. 96-105 (in Latvian).Search in Google Scholar

Lagzdins, A., Jansons V. Application of Statistical Methods for Analysis of Agricultural Runoff Monitoring Data. Scientific Journal of Riga Tehnical University: Environmental and Climate Tehnologies, 2010. Series 13, Vol. 5, ISSN 1691-5208, p. 65-71.10.2478/v10145-010-0036-1Search in Google Scholar

Lauksaimniecības noteču (noplūdes) monitoringa rokasgrāmata. [Quidelines for monitoring of agriculural run-off] LVA. 2003. 34. lpp. LVGMC mājas lapa http://www.meteo.lv/public/27998.htmlSearch in Google Scholar

LR MK noteikumi Nr. 92. (ar groz. 27.01.2009.) Prasības virszemes ūdeņu, pazemes ūdeņu un aizsargājamo teritoriju monitoringam un monitoringa programmu izstrādeiSearch in Google Scholar

LR MK noteikumi Nr. 33. "Par ūdens un augsnes aizsardzību no lauksaimnieciskās darbības izraisītā piesārņojuma ar nitrātiem" (2011.gada 11.janvārī.).Search in Google Scholar

Nitrate Directive No 91/676/EEC of 12 December 1991 concerning the protection of waters against pollution caused by nitrates from agricultural sources. Official Journal of the European Communities. 31.12.91. p. L375/1-L375/8.Search in Google Scholar

Stalnacke P., Vagstad N., Tamminen T., Wassmann P., Jansons V, and Loigu E. Nutrient runoff and transfer from land and rivers to the Gulf of Riga. Hydrobiologia 410. 1999. p.103-110.10.1023/A:1003736620843Search in Google Scholar

Sudars, R., Jansons, V., Kļaviņš, U., Dzalbe, I. Intensīvas lopkopības ietekme uz ūdens vidi [Impact of the intense animal farming on water environment]. Latvijas Lauksaimniecības universitātes raksti. Nr 15 (310), 2005. Jelgava. 40. - 49. lpp. (in Latvian).Search in Google Scholar

Vagstad, N., Jansons, V., Loigu, E., and Deelstra. Nutrient losses from agricultural areas in the Gulf of Riga drainage basin. Ecological Engineering, 14, 2000. p. 435-441.10.1016/S0925-8574(99)00067-1Search in Google Scholar

Vagstad N., Stalnacke P., Andersen, H. E., Deelstra, J., Gustafson, A., Ital, A., Jansons, V., Kyllmar, K., Loigu, E. and Rekolainen, S. Nutrient Losses from Agriculture in the Nordic and Baltic Countries. TemaNord 2001: 591. Nordic Council of Ministers, 2001. Copenhagen, ISSN 0908-6692. p.74.Search in Google Scholar

Vagstad, N., Stalnacke, P., Andersen, H. E., Deelstra, J., Jansons, V., Kyllmar, K., Loigu, E., Rekolainen, S. and Tumas, R. Regional variations in diffuse nitrogen losses from agriculture in the Nordic and Baltic regions. Hydrology and Earth System Sciences, 8 (4). 2004. p. 651-662.10.5194/hess-8-651-2004Search in Google Scholar