Juris Aigars

Juris Aigars



Juris Aigars is the Director of LIAE and a senior researcher.

Contact information

E-pasts: juris.aigars[at]lhei.lv


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LZP grants Nr. Lzp-2020/1-0063 “Vienšūnu un heterocītus veidojošo diazotrofu loma Rīgas līča slāpekļa budžeta veidošanā (NitroBug)

JPI ocean programme project “Downscaling Climate and Ocean Change to services: Thresholds and Opportunities – CE2COAST”

Jūras aizsargājamo biotopu izpēte un nepieciešamā aizsardzības stāvokļa noteikšana Latvijas ekskluzīvajā ekonomiskajā zonā (EEZ) – LFE REEF (Granta līgums Nr. LIFE19NAT/LV/000973)

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1. Liepina-Leimane, I., Barda, I., Jurgensone, I., Labucis , A., Suhareva, N., Kozlova, V., Maderniece, A., Aigars, J. (2022) Seasonal dynamic of diazotrophic activity and environmental variables affecting it in the Gulf of Riga, Baltic Sea. FEMS Microbial Ecology, Vol. 98, Issue 12, December 2022, https://doi.org/10.1093/femsec/fiac132 [Q1]

2. Tunēns, J., Aigars, J., Poikāne, R., Jurgensone, I., Labucis, A., Labuce, A., Liepiņa-Leimane, I., Buša, L., Vīksna, A. (2022) Stable Carbon and Nitrogen Isotope Composition in Suspended Particulate Matter Reflects Seasonal Dynamics of Phytoplankton Assemblages in the Gulf of Riga, Baltic Sea. Estuaries and Coasts. https://doi.org/10.1007/s12237-022-01071-z [Q1]

3. Reckermann, M., Omstedt, A., Soomere, T., Aigars, J., Akhtar, N., Beldowska, M., Beldowski, J., Cronin, T., Czub, M., Eero, M., Hyytiäinen, K.P., Jalkanen, J.-P., Kiessling, A., Kjelstrӧm, E., Kulinski, K., Larsen, X.G., McCrackin, M., Markus Meier, H.E., Oberbeckmann, S., Parnell, K., Pons-Seres de Brauwer, C., Poska, A., Saarinen, J., Szymczyha, B., Undeman, E., Wӧrman, A., and Zorita, E. (2022) Human impacts and their interactions in the Baltic Sea region. Earth System Dynamics. Vol. 13: 1-80. https://doi.org/10.5194/esd-13-1-2022 [Q1]

4. Dimante-Deimantovica, I., Suhareva, N., Barone, M., Putna-Nimane, I., Aigars, J. (2022) Hide-and-seek: Threshold values and contribution towards better understanding of recovery rate in microplastic research. MethodsX, Vol. 9, https://doi.org/10.1016/j.mex.2021.101603 [Q2/Q3]

5. Pakalniete, K., Ahtiainen, H., Aigars. J., Andersone, I., Armoškaite, A., Hansen S.H., Strāķe, S. (2021) Economic valuation of ecosystem service benefits and welfare impacts of offshore marine protected areas: a study from the Baltic Sea. Sustainability, 13, 10121. https://doi.org/10.3390/su131810121 [Q1]

6. Armoškaité, A., Aigars, J., Andersone, I., Hansen, S. H., Schrøder, L., Strāķe, S. (2021) Assessing change in habitat composition, ecosystem functioning and service supply in Latvian protected stony reefs. Journal of Environmental Management Vol. 298, 113537. https://doi.org/10.1016/j.jenvman.2021.113537 [Q1]

7. Aigars, J., Barone, M., Suhareva, N., Putna-Nimane, I., Dimante-Deimantovica, I. (2021) Occurrence and spatial distribution of microplastics in the surface waters of the Baltic Sea and the Gulf of Riga. Marine Pollution Bulletin, Vol. 172, 112860. https://doi.org/10.1016/j.marpolbul.2021.112860 [Q1]

8. Suhareva, N., Aigars, J., Poikāne, R., Tunens, J. (2021) The influence of feeding ecology and location on total mercury concentrations in Eurasian perch (Perca fluviatilis). Environmental Sciences Europe. https://doi.org/10.1186/s12302-021-00523-w [Q1]

9. Labuce, A., Ikauniece, A., Jurgensone, I., Aigars, J. (2021) Environmental Impacts on Zooplankton Diversity in Brackish Semi-Enclosed Gulf. Water 2021, 13, 1881. https://doi.org/10.3390/w13141881 [Q2]

10. Suhareva, N., Aigars, J., Poikane, R., Jansons, M. (2020) Development of fish age normalization technique for pollution assessment of marine ecosystem, based on concentrations of mercury, copper, and zinc in dorsal muscles of fish. Environmental Monitoring and assessment. Vol 192: 279. https://doi.org/10.1007/s10661-020-08261-x [Q2]

11. Armoškaité, A., Puriņa, I., Aigars, J., Strāķe, S., Pakalniete, K., Frederiksen, P., Schrøder, L., Hansen, H.S. (2020) Establishing the links between marine ecosystem components, functions and services: An ecosystem service assessment tool. Ocean and Coastal Management. Vol. 193. https://doi.org/10.1016/j.ocecoaman.2020.105229 [Q1]

12. Purina, I., Labucis, A., Barda, I., Jurgensone, I., Aigars, J. (2018) Primary productivity in the Gulf of Riga (Baltic Sea) in relation to phytoplankton species and nutrient variability. Oceanologia. https://doi.org/10.1016/j.oceano.2018.04.005 [Q2-Q1]

13. Veidemane, K., Ruskule, A., Strake, S., Purina, I., Aigars, J., Sprukta, S., Ustups, D., Putnis, I. & Klepers, A. (2017) Application of the marine ecosystem services approach in the development of the maritime spatial plan of Latvia. International Journal of Biodiversity Science, Ecosystem Services & Management. http://dx.doi.org/10.1080/21513732.2017.1398185 (SNIP = 0.517, skatīts Scopus 2018.g.)

14. Aigars, J., Suhareva, N., Poikane, R. (2017) Distribution of polibrominated diphenyl ethers in sewage sludge, sediments, and fish from Latvia. Environments. Vol. 4 (1), 12; doi:10.3390/environments4010012 (http://www.mdpi.com/2076-3298/4/1/12) (Web of Science)

15. Pakalniete, K., Aigars, J., Czajkowski, M., Strake, S., Zawojska, E., Hanley, N. (2017) Understanding the distribution of economic benefits from improving coastal and marine ecosystems. Science of the Total Environment. Vol. 584-585, 29-40. (IF = 3.976; SNIP = 1.531, skatīts 2017)

16. Lavrinovičs, A., Viška, M., Sprukta, S., Aigars, J. (2016) The assessment of potential physical impact of climate change on coastal reef habitats: A case study of the Latvian coast of the Baltic Proper. Environmental and Experimental Biology. Vol. 14, 91-96.

17. Aigars, J., Poikāne, R., Dalsgaard, T., Eglīte, E., Jansons, M. (2015) Biogeochemistry of N, P and Si in the Gulf of Riga surface sediments: Implications of seasonally changing factors. Continental Shelf Research. Vol. 105, 112-120. (SNIP = 1.133, skatīts 2016)

18. Aigars, J., Jurgensone, I., and Jansons, M. (2014) Dynamics of silica and phytoplankton population under altered conditions of river flow in the Daugava River, Latvia. Estonian Journal of Ecology, 63, 4. Doi: 10.3176/eco.2014.4. (SNIP = 0.306, skatīts 2016)

19. Aigars, J., Poikāne, R., Jurgensone, I., and Jansons, M. (2014) Impact of eutrophication and climate change on Cd and other trace metal dynamic in the Gulf of Riga, Baltic Sea. Proceedings of the Latvian Academy of Sciences. Section B. Vol. 68: 112-117. (SNIP = 0.232, skatīts 2016)

20. Eglīte, E., Lavrinovičs, A., Müller-Karulis, B., Aigars, J., Poikāne, R. (2014) Nutrient turnover at the hypoxic boundary: flux measurements and model representation for the bottom water environment of the Gulf of Riga, Baltic Sea. Oceanologia. Vol. 56, 711-735. (SNIP = 0.672, skatīts 2016)

21. Aigars, J., Šmite, E., Skrube, J., and Gerke, O. (2012) Oil pollution in waters of Latvia. In: A.G. Kostianoy and O. Yu. Lavrova (eds.) Oil Pollution in the Baltic Sea, The Handbook of Environmental Chemistry. 27: 85-100. Springer. DOI: 10.1007/698_2011_113 (Published online: 2 August 2011).

22. Jurgensone, I., and Aigars, J. (2012) Bioavailability of riverine dissolved organic matter to phytoplankton in the marine coastal waters. Estuarine, Coastal and Shelf Science. Vol. 107: 97-104.

23. Melecis, V., Krisjane, Z., Klavins, M., Aigars, J., Elferts, D., Viksne, J. (2011) Preliminary characteristics of ecological and socioeconomic components and their interaction within the long term socioecological research platform of Latvia. Scientific Journal of Riga Technical University. Environmental and Climate Technologies. Vol. 7: 87-92.

24. Conley, D.J., Carstensen, J., Aigars, J., Axe, P., Bonsdorf, E., Eremina, T., Haati, B.-M., Humborg, C., Jonsson, P., Kotta, J., Lännegren, C., Larsson, U., Maximov, A., Rodriguez Medina, M., Lysiak-Pastuszak, E., Remaikaite-Nikiene, N., Walve, J., Wilhelms, S. and Zillen, L. (2011) Hypoxia is increasing in the coastal zone of the Baltic Sea. Environmental Science and Technology. 45: 6777-6783. Doi.org/10.1021/es201212.

25. Müller-Karulis, B. and Aigars, J. (2011) Modelling the long-term dynamics of nutrients and phytoplankton in the Gulf of Riga. Journal of Marine Systems. Vol. 87: 161-176.

26. Olli, K., Clarke, A., Danielsson, Å., Aigars, J., Conley, D.J., Tamminen, T. (2008) Diatom stratigraphy and long-term dissolved silica concentrations in the Baltic Sea. Journal of Marine Systems, Vol. 73: 284-299

27. Conley, D.J., Humborg, C., Smedberg, E., Rahm, L., Papush, L., Danielsson, Å., Clarke, A., Pastuszak, M., Aigars, J., Ciuffa, D., Mörth, C.-M. (2008) Past, present and future state of the biogeochemical Si cycle in the Baltic Sea. Journal of Marine Systems, Vol. 73: 338-346

28. Aigars, J., Müller-Karulis, B., Martin, G., Jermakovs, V. (2008) Ecological quality boundary-setting procedures: the Gulf of Riga case study, Environmental Monitoring and Assessment, Vol. 138, Nr. 1-3: 313-326

29. Humborg, C., Pastuszak, M., Aigars, J., Siegmund, H., Mört, C.-M. (2006) Decreased silica land-sea fluxes through damming in the Baltic Sea catchment – significance of particle trapping and hydrological alterations. Biogeochemistry, 77: 265-281.

30. Poikāne, R., Carstensen, J., Dahllöf, I., Aigars, J. (2005) Distribution patterns of particulate metals in the water column and nepheloid layer of the Gulf of Riga. Chemosphere, 60: 216-225

31. Aigars, J. (2001) Seasonal variations of the phosphorus geochemistry in the surface sediments of the Gulf of Riga, Baltic Sea. Chemosphere, 45: 827-834.

32. Aigars, J. and Carman, R. (2001) Seasonal variations of carbon and nitrogen geochemistry in the surface sediments of the Gulf of Riga, Baltic Sea. Chemosphere, 43: 313-320.

33. Danielsson, Å., Rahm L., Carman R. and J. Aigars (1998) Cokriging nutrients in the Gulf of Riga sediments. Estuarine, Coastal and Shelf Science, 46: 713-722

34. Carman, R., Aigars, J., Larsson, B. (1996) Carbon- and nutrient geochemistry of the surface sediments of the Gulf of Riga, Baltic Sea. Marine Geology, 134: 57-76.

35. Carman, R. and Aigars, J. (1997) Vertical and spatial distribution of biogenic silica in the sediment of the Gulf of Riga, Baltic Sea. Toxicological and Environmental Chemistry, 60: 245-259.

36. Aigars, J., Andrushaitis, A. (1993) The nutrient transport through sediment-water interface in the Gulf of Riga, Baltic Sea. “Zinatnes Akademijas Vestis” (Science Academy News), Riga Nr. 10. part B: 73-78.

Docent at University of Latvia

The main focus of the scientific work (research interest) is on the cycling of elements and compounds, both biogenic and pollutants, and microplastics in the Baltic Sea ecosystem and the impact of these elements on Baltic Sea ecosystem components, including the capacity of the Baltic Sea to provide ecosystem services under changing climate and anthropogenic pressures

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