Juris Aigars

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Juris Aigars

Direktors

Direktors

Institūtā veic direktora pienākumus un vienlaicīgi ir vadošais pētnieks.

Zinātniskais darbs galvenokārt tiek fokusēts uz elementu un savienojumu (gan biogēnu, gan piesārņojošo vielu, gan mikroplastmasas) apriti Baltijas jūras ekosistēmā un šo elementu ietekmi uz Baltijas jūras ekosistēmas komponentēm, tai skaitā uz Baltijas jūras kapacitāti nodrošināt ekosistēmas pakalpojumus mainīgā klimata un antropogēnā spiediena apstākļos.

Juris Aigars ir docents Latvijas Universitātē.

Kontaktinformācija

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

ResearchGate

  1. Heredia, N.A., Suhareva, N., Poikane, R., Aigars, J., Zagars, M. (2025) Ecological adaptability: Size-dependent foraging of European perch at the coastal-freshwater interface of the Baltic Sea. Estuarine, Coastal and Shelf Science, Vol. 319, 109294, DOI:10.1016/j.ecss.2025.109294
  2. Eelsalu, M., Piho, L., Aigars, J., Kelpsaite-Rimkiene, L., Kondrat, V., Kruusmaa, M., Parnell, K. E., Ristolainen, A., Sakurova, I., Skudra, M., Viska, M., Soomere, T. (2025) Exponential distribution of wave-driven near-bed water speeds under short-crested waves: a case study in the eastern Gulf of Riga, the Baltic Sea. Proceedings of the Estonian Academy of Sciences, 74 (1), 23. DOI:10.3176/proc.2025.1.03
  3. Suhareva, N., Aigars, J., Poikane, R., Heredia, N.A., Tunens, J., Fedorovska, A., Baraskova, L. (2024) Trophic magnification of Hg, PBDE and PCB in population of European perch with varying feeding ecology in the Baltic Sea. Estuarine, Coastal and Shelf Science. Vol. 301, 108727, ISSN 0272-7714, doi.org/10.1016/j.ecss.2024.108727
  4. Dimante-Deimantovica, I., Bebrite, A., Skudra, M., Retike, I., Viska, M., Bikse, J., Barone, M., Prokopovica, A., Svipsta, S., Aigars, J. (2023) The baseline for micro- and mesoplastic pollution in open Baltic Sea and Gulf of Riga beach. Frontiers in Marine Science. doi.org/10.3389/fmars.2023.1251068
  5. Armoskaite, A., Aigars, J., Andersone, I., Bonnevie, I.M., Hansen, H.S., Strake, S., Thenen, M., Schroder, L. (2023) Setting the scene for a multi-map toolset supporting maritime spatial planning by mapping relative cumulative impacts on ecosystem service supply. Front. Mar. Sci. Vol. 10, 1213119. doi:0.3389/fmars.2023.1213119
  6. Barone, M., Suhareva, N., Aigars, J., Putna-Nimane, I., Dimante-Deimantovica, I. (2023) Dataset on microplastic concentrations, characteristics, and chemical composition in the marine surface waters of Latvia – the Eastern Gotland basin and the Gulf of Riga. Data in Brief, Vol. 47, doi.org/10.1016/j.dib.2023.108992
  7. 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. doi.org/10.1093/femsec/fiac132
  8. Tunens, J., Aigars, J., Poikane, R., Jurgensone, I., Labucis, A., Labuce, A., Liepina-Leimane, I., Busa, L., Viksna, 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. doi.org/10.1007/s12237-022-01071-z
  9. 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. doi.org/10.5194/esd-13-1-2022
  10. 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, Article number 101603, DOI: 10.1016/j.mex.2021.101603
  11. Suhareva, N., Aigars, J., Poikane, R., Tunens, J. (2021) The influence of feeding ecology and location on total mercury cooncentrations in Eurasian perch (Perca fluviatilis). Environmental Sciences Europe. Vol. 33. DOI: 10.1186/s12302-021-00523-w
  12. Armoskaite, A., Aigars, J., Andersone, I., Hansen, H.S., Schroder, 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. DOI:10.1016/j.jenvman.2021.113537
  13. Aigars, J., Barone, M., Suhareva, N., Putna-Nimane, I., Deimantovica-Dimante, 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. DOI:10.1016/j.marpolbul.2021.112860
  14. Pakalniete, K., Ahtiainen, H., Aigars, J., Andersone, I., Armoskaite, A., Hansen, H.S., Strake, S. (2021) Economic valuation of ecosystem service benefits and welfare impacts of offshore marine protected areas: A study from the Baltic sea. Sustainability (Switzerland), Vol. 13. DOI: 10.3390/su131810121
  15. Labuce, A., Ikauniece, A., Jurgensone, I., Aigars, J. (2021) Environmental impacts on zooplankton functional diversity in brackish semi-enclosed gulf. Water (Switzerland), Vol. 13. DOI: 10.3390/w13141881
  16. 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. DOI: 10.1007/s10661-020-08261-x
  17. Armoskaite, A., Purina, I., Aigars, J., Strake, S., Pakalniete, K., Frederiksen, P., Schroder, 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. DOI: 10.1016/j.ocecoaman.2020.105229
  18. 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, 60 (4), pp. 544-552. DOI:10.1016/j.oceano.2018.04.005
  19. 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, 584-585, pp. 29-40. DOI: 10.1016/j.scitotenv.2017.01.097
  20. Aigars, J., Suhareva, N., Poikane, R. (2017) Distribution of polybrominated diphenyl ethers in sewage sludge, sediments, and fish from Latvia. Environments (MDPI), 4 (1), art. no. 12, pp. 1-16. doi.org/10.3390/environments4010012
  21. 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 and Management, 13 (1), pp. 398-411. doi.org/10.1080/21513732.2017.1398185
  22. Aigars, J., Poikane, R., Dalsgaard, T., Eglite, 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, 105, pp. 112-120. DOI: 10.1016/j.csr.2015.06.008
  23. Aigars, J., Smite, E., Skrube, J., Gerke, O. (2014) Oil pollution in waters of Latvia (2014) Handbook of Environmental Chemistry, 27, pp. 85-99. DOI: 10.1007/698_2011_113
  24. Aigars, J., Jurgensone, I., 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), pp. 217-231. DOI: 10.3176/eco.2014.4.02
  25. Aigars, J., Poikane, R., Jurgensone, I., 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: Natural, Exact, and Applied Sciences, 68 (1-2), pp. 112-117. DOI: 10.2478/prolas-2014-0010
  26. Eglite, E., Lavrinovics, A., Müller-Karulis, B., Aigars, J., Poikane, 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, 56 (4), pp. 711-735. doi.org/10.5697/oc.56-4.711
  27. Aigars, J., Smite, 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.
  28. 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.
  29. 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.
  30. 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.
  31. 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.
  32. 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
  33. 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
  34. 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
  35. 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.
  36. Poikane, 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
  37. Aigars, J. (2001) Seasonal variations of the phosphorus geochemistry in the surface sediments of the Gulf of Riga, Baltic Sea. Chemosphere, 45: 827-834.
  38. 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.
  39. 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
  40. 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.
  41. 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.
  42. Aigars, J., Andrusaitis, 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.
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