Baltic agriculture in transition - the contribution to nutrient loads in the Gulf of Riga drainage basinVagstad, Nils; Jansons, Viesturs; Loigu, Enn; Deelstra, JohannesInternational Conference on Agricultural Effects on Ground and Surface Waters : Research and Policy at the Edge of Science and Society : Wageningen, 20002000 / p. 1-9 https://www.researchgate.net/publication/267831903_Baltic_agriculture_in_transition-the_contribution_to_nutrient_loads_in_the_Gulf_of_Riga_drainage_basin

Baltic agriculture in transition - the contribution to nutrient loads in the Gulf of Riga drainage basinVagstad, Nils; Deelstra, Johannes; Jansons, Viesturs; Loigu, EnnAgricultural effects on ground and surface waters : research at the edge of science and society2002 / p. 367-372

Climate change and the potential effects on runoff and nitrogen losses in the Nordic–Baltic regionOygarden, Lillian; Deelstra, Johannes; Iital, ArvoAgriculture, ecosystems and environment2014 / p. 114-126 : ill https://doi.org/10.1016/j.agee.2014.06.025 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Comparative analysis of hydrological and hydrochemical data from small watershedsLoigu, Enn; Vassiljev, Anatoli; Iital, Arvo; Vagstad, Nils; Deelstra, JohannesXX Nordic Hydrological Conference, Helsinki, Finland, 10-13 August, 1998. Vol. 11998 / p. 225

Effects of large-scale changes in emissions on nutrient concentrations in Estonian rivers in the Lake Peipsi drainage basinIital, Arvo; Stalnacke, Per; Deelstra, Johannes; Loigu, Enn; Pihlak, MargusJournal of hydrology2005 / 1/4, p. 261-273 : ill

Hydrological pathways and nitrogen runoff in agricultural dominated catchments in Nordic and Baltic countriesDeelstra, Johannes; Iital, Arvo; Povilaitis, Arvydas; Kyllmar, Katarina; Greipsland, Inga; Blicher-Mathiesen, Gitte; Jansons, Viesturs; Koskiaho, Jari; Lagzdins, AinisAgriculture, ecosystems and environment2014 / p. 211-219 : ill https://doi.org/10.1016/j.agee.2014.06.007 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Hydrological processes in small agricultural catchmentsDeelstra, Johannes; Eggestad, Hans Olav; Iital, Arvo; Jansons, ViestursProceedings of the 10th International Drainage Workshop of ICID Working Group on Drainage : Helsinki/Tallinn 6-11. July 20082008 / p. 314-333 : ill

Hydrology in small agricultural catchments, pathways and their impact on nutrient and soil lossDeelstra, Johannes; Eggestad, Hans Olav; Iital, Arvo; Jansons, ViestursStatus and Perspectives of Hydrology in Small Basins : International Workshop : Goslar - Hahnenklee, Germany, 30 March - 2 April 20092009 / p. 75-79

Interactions between hydrology and nutrient runoff in small agricultural catchments. A comparative study of Estonian, Latvian and Norwegian catchmentsDeelstra, Johannes; Vagstad, Nils; Loigu, Enn; Vassiljev, Anatoli; Jansons, ViestursXX Nordic Hydrological Conference, Helsinki, Finland, 10-13 August, 1998. Vol. 11998 / p. 120-128: ill

Long-term monitoring of nutrient losses from agricultural catchments in the Nordic–Baltic region – a discussion of methods, uncertainties and future needsKyllmar, Katarina; Bechmann, Marianne; Deelstra, Johannes; Iital, Arvo; Blicher-Mathiesen, Gitte; Jansons, Viesturs; Koskiaho, Jari; Povilaitis, ArvydasAgriculture, ecosystems and environment2014 / p. 4-12 : ill https://doi.org/10.1016/j.agee.2014.07.005 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Monitoring of diffuse pollution from agriculture to support implementation of the WFD and the Nitrate Directive in EstoniaIital, Arvo; Pachel, Karin; Deelstra, JohannesEnvironmental science & policy2008 / p. 185-193 https://www.researchgate.net/publication/223871588_Monitoring_of_diffuse_pollution_from_agriculture_to_support_implementation_of_the_WFD_and_the_Nitrate_Directive_in_Estonia

Nutrient losses from agricultural areas in the Gulf of Riga drainage basinVagstad, Nils; Jansons, Viesturs; Loigu, Enn; Deelstra, JohannesEcological engineering2000 / p. 435-441

Nutrient runoff from agricultural areas in Estonia and LatviaVagstad, Nils; Loigu, Enn; Jansons, Viesturs; Deelstra, Johannes; Njos, A.A synthesis report of the Gulf of Riga project's : sub-project Soil and Nutrient loss from small catchments : technical report1998 / [36] p

Reprint of "Hydrological pathways and nitrogen runoff in agricultural dominated catchments in Nordic and Baltic countries"Deelstra, Johannes; Iital, Arvo; Povilaitis, Arvydas; Kyllmar, Katarina; Greipsland, Inga; Blicher-Mathiesen, Gitte; Jansons, Viesturs; Koskiaho, Jari; Lagzdins, AinisAgriculture, ecosystems and environment2014 / p. 65-73 : ill https://doi.org/10.1016/j.agee.2014.06.032 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Retention of nitrate in groundwater. The case of Lake Peipsi basin, EstoniaIital, Arvo; Deelstra, Johannes; Stalnacke, Per; Loigu, Enn; Pihlak, MargusXXIII Nordic Hydrological Conference ["Fresh Water Resources Management"] : Tallinn, Estonia, 8-12 August 2004 : selected articles. Vol. I2004 / p. 169-179 : ill

Risk assessment of phosphorus loss from agriculture in the Nordic and Baltic countries using the P index approachBechmann, Marianne; Deelstra, Johannes; Iital, Arvo; Jansons, ViestursXXIII Nordic Hydrological Conference ["Fresh Water Resources Management"] : Tallinn, Estonia, 8-12 August 2004 : selected articles. Vol. I2004 / p. 159-168 : ill https://artiklid.elnet.ee/record=b2343294*est

The flashiness index and transport/retention of nutrients and suspended solidsDeelstra, Johannes; Iital, ArvoNJF Seminar 373 : Transport and Retention of Pollutants from Different Production Systems : Tartu, Estonia, 11-14 June 20062006 / p. 62-69 : ill., map https://artiklid.elnet.ee/record=b2645417*est

The GEF - Baltic Sea Regional Project - monitoring and assessment of non-point source pollutionDeelstra, Johannes; Vagstad, Nils; Loigu, Enn; Iital, Arvo; Jansons, Viesturs; Abramenko, Kaspars; Sileika, Antanas SigitasXXIII Nordic Hydrological Conference ["Fresh Water Resources Management"] : Tallinn, Estonia, 8-12 August 2004 : selected articles. Vol. II2004 / p. 393-405 : ill https://artiklid.elnet.ee/record=b2343498*est

The use of the flashiness index as a possible indicator for nutrient loss prediction in agricultural catchmentsDeelstra, Johannes; Iital, ArvoBoreal environment research2008 / 3, p. 209-221 : ill https://www.borenv.net/BER/archive/pdfs/ber13/ber13-209.pdf

Time resolution and hydrological characteristics in agricultural catchmentsDeelstra, Johannes; Eggestad, Hans Olav; Iital, Arvo; Jansons, Viesturs; Barkved, Line J.Status and perspectives of hydrology in small basins2010 / p. 138-143 https://www.researchgate.net/publication/215743143_Time_resolution_and_hydrological_characteristics_in_agricultural_catchments