Photo of Anne Ojala
  • Niemenkatu 73

    00014

    Finland

  • Viikinkaari 1, Biocentre 3

    00790 Helsinki

    Finland

  • Viikinkaari 5, Biocenter 2

    00790 Helsinki

    Finland

  • Viikinkaari 1, Biokeskus 3

    00790 Helsinki

    Finland

1983 …2019
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Publications 1983 2019

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2019

Ecosystem responses to increased organic carbon concentration: comparing results based on longterm monitoring and whole-lake experimentation

Kankaala, P., Arvola, L., Hiltunen, M., Huotari, J., Jones, R. I., Hannu, N., Ojala, A., Olin, M., Peltomaa, E., Peura, S., Rask, M., Tulonen, T. & Vesala, S., 30 Jul 2019, In : Inland waters.

Research output: Contribution to journalArticleScientificpeer-review

Influence of long term nitrogen limitation on lipid, protein and pigment production of Euglena gracilis in photoheterotrophic cultures

Tossavainen, M., Ilyass, U., Ollilainen, V., Valkonen, K., Ojala, A. & Romantschuk, M., 1 Apr 2019, In : PeerJ. 7, 19 p., 6624.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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Open Access
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Rotifer communities under variable predation-turbulence combinations

Horppila, J., Härkönen, L., Hellén, N., Estlander, S., Pekcan-Hekim, Z. & Ojala, A., Feb 2019, In : Hydrobiologia. 828, 1, p. 339-351 13 p.

Research output: Contribution to journalArticleScientificpeer-review

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2018

Conversion of biowaste leachate to valuable biomass and lipids in mixed cultures of Euglena gracilis and chlorophytes

Tossavainen, M., Katyal, N., Silja, K., Valkonen, K., Sharma, A. K., Sharma, S., Ojala, A. & Romantschuk, M., Nov 2018, In : Algal Research. 35, p. 76-84 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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Effects of Climate Change on CO2 Concentration and Efflux in a Humic Boreal Lake: A Modeling Study

Kiuru, P., Ojala, A., Mammarella, I., Heiskanen, J., Kämäräinen, M., Vesala, T. & Huttula, T., Jul 2018, In : Journal of Geophysical Research : Biogeosciences. 123, 7, p. 2212-2233 22 p.

Research output: Contribution to journalArticleScientificpeer-review

Effects of similar weather patterns on the thermal stratification, mixing regimes and hypolimnetic oxygen depletion in two boreal lakes with different water transparency

Mammarella, I., Gavrylenko, G., Zdorovennova, G., Ojala, A., Erkkilä, K-M., Zdorovennov, R., Stepanyuk, O., Palshin, N., Terzhevik, A., Vesala, T. & Heiskanen, J., Aug 2018, In : Boreal Environment Research. 23, p. 237-247 11 p.

Research output: Contribution to journalArticleScientificpeer-review

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High-frequency productivity estimates for a lake from free-water CO2 concentration measurements

Provenzale, M., Ojala, A., Heiskanen, J., Erkkila, K-M., Mammarella, I., Hari, P. & Vesala, T., 9 Apr 2018, In : Biogeosciences. 15, 7, p. 2021-2032 12 p.

Research output: Contribution to journalArticleScientificpeer-review

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Methane and carbon dioxide fluxes over a lake: comparison between eddy covariance, floating chambers and boundary layer method

Erkkilä, K-M., Ojala, A., Bastviken, D., Biermann, T., Heiskanen, J. J., Lindroth, A., Peltola, O., Rantakari, M., Vesala, T. & Mammarella, I., 19 Jan 2018, In : Biogeosciences. 15, 2, p. 429-445 17 p.

Research output: Contribution to journalArticleScientificpeer-review

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2017

Culturing of Selenastrum on diluted composting fluids; conversion of waste to valuable algal biomass in presence of bacteria

Tossavainen, M., Nykänen, A., Valkonen, K. S., Ojala, A., Silja, K. & Romantschuk, M., Aug 2017, In : Bioresource Technology. 238, p. 205-213 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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Iron and pH regulating the photochemical mineralization of dissolved organic carbon

Gu, Y., Lensu, A., Perämäki, S., Ojala, A. K. & Vähätalo, A. V., May 2017, In : ACS Omega. 2, p. 1905-1914

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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Methylophilaceae and Hyphomicrobium as target taxonomic groups in monitoring the function of methanol-fed denitrification biofilters in municipal wastewater treatment plants

Rissanen, A. J., Ojala, A., Fred, T., Toivonen, J. & Tiirola, M., Jan 2017, In : Journal of Industrial Microbiology and Biotechnology. 44, 1, p. 35-47 13 p.

Research output: Contribution to journalArticleScientificpeer-review

Seasonal variation in nutrient removal efficiency of a boreal wetland detected by high-frequency on-line monitoring

Valkama, P., Mäkinen, E., Ojala, A., Vahtera, H., Lahti, K., Rantakokko, K., Vasander, H., Nikinmaa, E. & Wahlroos, O., Jan 2017, In : Ecological Engineering. 98, p. 307-317 11 p.

Research output: Contribution to journalArticleScientificpeer-review

2016

LAKE 2.0: A model for temperature, methane, carbon dioxide and oxygen dynamics in lakes

Stepanenko, V., Mammarella, I., Ojala, A. K., Miettinen, H. M., Lykosov, V. N. & Vesala, T. V., 2016, In : Geoscientific Model Development. 9, 5, p. 1977-2006 30 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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Methylophaga and Hyphomicrobium can be used as target genera in monitoring saline water methanol-utilizing denitrification

Rissanen, A. J., Ojala, A., Dernjatin, M., Jaakkola, J. & Tiirola, M., Dec 2016, In : Journal of Industrial Microbiology and Biotechnology. 43, 12, p. 1647-1657 11 p.

Research output: Contribution to journalArticleScientificpeer-review

Modeling nonlinear responses of DOC transport in boreal catchments in Sweden

Kasurinen, V., Alfredsen, K., Ojala, A., Pumpanen, J., Weyhenmeyer, G. A., Futter, M. N., Laudon, H. & Berninger, F., Jul 2016, In : Water Resources Research. 52, 7, p. 4970-4989 20 p.

Research output: Contribution to journalArticleScientificpeer-review

Nostetta suomalaiseen vesitutkimukseen

Ojala, A. K., Dec 2016, In : energiaopas.net. p. 6 1 p.

Research output: Contribution to journalArticleGeneral public

Real-time detection of arsenic cations from ambient air in boreal forest and lake environments

Faust, J. A., Junninen, H., Ehn, M., Chen, X., Ruusuvuori, K., Kieloaho, A-J., Bäck, J., Ojala, A., Jokinen, T., Worsnop, D. R., Kulmala, M. & Petäjä, T., Feb 2016, In : Environmental Science & Technology Letters. 3, 2, p. 42-46 5 p.

Research output: Contribution to journalArticleScientificpeer-review

2015

A process-based model for simulation of lake DIC and oxygen

Kiuru, P., Ojala, A. K., Mammarella, I. & Huttula, T., 2015, (Submitted) In : Boreal Environment Research.

Research output: Contribution to journalArticleScientificpeer-review

Carbon dioxide and energy fluxes over a small boreal lake in Southern Finland

Mammarella, I., Nordbo, A., Rannik, U., Haapanala, S., Levula, J., Laakso, H., Ojala, A., Peltola, O., Heiskanen, J., Pumpanen, J. & Vesala, T., Jul 2015, In : Journal of Geophysical Research : Biogeosciences. 120, 7, p. 1296-1314 19 p.

Research output: Contribution to journalArticleScientificpeer-review

Concentrations and quality of DOC along the terrestrial-aquatic continuum in a boreal forested catchment

Rasilo, T., Ojala, A., Huotari, J., Starr, M. & Pumpanen, J., 2015, In : Freshwater Science. 34, 2, p. 440-455 16 p.

Research output: Contribution to journalArticleScientificpeer-review

Effects of water clarity on lake stratification and lake-atmosphere heat exchange

Heiskanen, J. J., Mammarella, I., Ojala, A., Stepanenko, V., Erkkila, K-M., Miettinen, H., Sandström, H., Eugster, W., Lepparanta, M., Jarvinen, H., Vesala, T. & Nordbo, A., 16 Aug 2015, In : Journal of Geophysical Research : Atmospheres. 120, 15, p. 7412-7428 17 p.

Research output: Contribution to journalArticleScientificpeer-review

Urban wetland parks in Finland: improving water quality and creating endangered habitats

Wahlroos, O. M., Valkama, P., Mäkinen, E., Ojala, A., Vasander, H., Väänänen, V-M., Halonen, A., Linden, L., Nummi, P., Ahponen, H., Lahti, K., Vessman, T., Rantakokko, K. & Nikinmaa, E., 2015, In : International Journal of Biodiversity Science, Ecosystem Services & Management. 11, 1, p. 46-60 15 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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2014

Combined Effects of Turbulence and Different Predation Regimes on Zooplankton in Highly Colored Water-Implications for Environmental Change in Lakes

Härkönen, L., Pekcan-Hekim, Z., Hellen, N., Ojala, A. & Horppila, J., 2014, In : PLoS One. 9, 11, 13 p., 111942.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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Effects of cooling and internal wave motions on gas transfer coefficients in a boreal lake

Heiskanen, J. J., Mammarella, I., Haapanala, S., Pumpanen, J., Vesala, T., Macintyre, S. & Ojala, A., 2014, In : Tellus. Series B: Chemical and Physical Meteorology. 66, 16 p., 22827.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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Increasing precipitation enhances the riverine transport of carbon but decreases the proportion of inorganic carbon

Rantakari, M. M., Kortelainen, P., Räike, A. & Ojala, A., 2014, (Submitted) In : Ecosystems.

Research output: Contribution to journalArticleScientificpeer-review

2013

Changes in phytoplankton in a boreal lake during a 14-year period

Peltomaa, E., Ojala, A., Holopainen, A-L. & Salonen, K., 27 Sep 2013, In : Boreal Environment Research. 18, 5, p. 387-400 14 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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Concentrations of CO2 and CH4 in water columns of two stratified boreal lakes during a year of atypical summer precipitation

López Bellido, J., Tulonen, T., Paula, K. & Ojala, A., 2013, In : Biogeochemistry. 113, 1-3, p. 613-627 15 p.

Research output: Contribution to journalArticleScientificpeer-review

Contrasting CO2 concentration discharge dynamics in headwater streams: a multi-catchment comparison

Dinsmore, K. J., Wallin, M. B., Johnson, M. S., Billett, M. F., Bishop, K., Pumpanen, J. & Ojala, A., 2013, In : Journal of Geophysical Research : Biogeosciences. 118, 2, p. 445-461 17 p.

Research output: Contribution to journalArticleScientificpeer-review

Efficient gas exchange between a boreal river and the atmosphere

Huotari, J., Haapanala, S., Pumpanen, J., Vesala, T. & Ojala, A., 2013, In : Geophysical Research Letters. 40, 21, p. 5683-5686 4 p.

Research output: Contribution to journalArticleScientificpeer-review

Fatty acid composition as biomarkers of freshwater microalgae: analysis of 37 strains of microalgae in 22 genera and in seven classes

Taipale, S., Strandberg, U., Peltomaa, E., Galloway, A. W. E., Ojala, A. & Brett, M. T., 16 Dec 2013, In : Aquatic Microbial Ecology. 71, 2, p. 165-178 14 p.

Research output: Contribution to journalArticleScientificpeer-review

Interlake variation and environmental controls of denitrification across different geographical scales

Rissanen, A., Tiirola, M., Hietanen, S. & Ojala, A., 3 Apr 2013, In : Aquatic Microbial Ecology. 69, 1, p. 1-16 16 p.

Research output: Contribution to journalArticleScientificpeer-review

Lake-size dependent physical forcing drives carbon dioxide and methane effluxes from lakes in a boreal landscape

Kankaala, P., Huotari, J., Tulonen, T. & Ojala, A., 2013, In : Limnology and Oceanography. 58, 6, p. 1915-1930 16 p.

Research output: Contribution to journalArticleScientificpeer-review

Production of different pelagic energy mobilisers in boreal lakes varies in relation to morphometry and concentration of dissolved organic carbon

Kankaala, P., López Bellido, J., Ojala, A., Tulonen, T. & Jones, R. I., 2013, In : Ecosystems. 16, 6, p. 1152-1164 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Variable production by different pelagic energy mobilizers in boreal lakes

Kankaala, P., López Bellido, J., Ojala, A., Tulonen, T. & Jones, R. I., 2013, In : Ecosystems. 16, 6, p. 1152-1164 13 p.

Research output: Contribution to journalArticleScientificpeer-review

Weak response of the microbial food web of a boreal humic lake to hypolimnetic anoxia

Peltomaa, E., Zingel, P. & Ojala, A., 2013, In : Aquatic Microbial Ecology. 68, 2, p. 91-105 15 p.

Research output: Contribution to journalArticleScientificpeer-review

2012

Corrigendum to 'An urban boreal lake basin as a source of CO2 and CH4' [Environ. Pollut. 159 (2011) 1649-1659]

López Bellido, J., Ojala, A. & Peltomaa, E., 2012, In : Environmental Pollution. 166, p. 234 1 p.

Research output: Contribution to journalArticleScientificpeer-review

Meteorological drivers of the dynamics of autotrophic picoplankton

Peltomaa, E. & Ojala, A., May 2012, In : Freshwater Biology. 57, 5, p. 1005-1016 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Rain-induced changes in CO2 concentrations in the soil-lake-brook continuum of a boreal forested catchment

Rasilo, T., Ojala, A., Huotari, J. & Pumpanen, J., 2012, In : Vadose Zone Journal. 11, 2, 14 p.

Research output: Contribution to journalArticleScientificpeer-review

Response of a microbial food web to prolonged seasonal hypoxia in a boreal lake

Brek-Laitinen, G., López Bellido, J. & Ojala, A., 4 Jan 2012, In : Aquatic Biology. 14, 2, p. 105-120 16 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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2011

An urban boreal lake basin as a source of CO2 and CH4

López Bellido, J., Peltomaa, E. & Ojala, A., 2011, In : Environmental Pollution. 159, 6, p. 1649-1659 11 p.

Research output: Contribution to journalArticleScientificpeer-review

Carbon pools and fluxes in a chain of five boreal lakes: A dry and wet year comparison

Einola, E., Rantakari, M. M., Kankaala, P., Kortelainen, P., Ojala, A., Pajunen, H., Mäkelä, S. & Arvola, L., Jul 2011, In : Journal of Geophysical Research : Biogeosciences. 116, G03009, p. 1-13 13 p.

Research output: Contribution to journalArticleScientificpeer-review

Grazing of heterotrophic nanoflagellates on the eukaryotic picoautotroph Choricystis sp.

Brek-Laitinen, G. & Ojala, A., 2011, In : Aquatic Microbial Ecology. 62, 1, p. 49-59 11 p.

Research output: Contribution to journalArticleScientificpeer-review

Long-term direct CO2 flux measurements over a boreal lake: Five years of eddy covariance data

Huotari, J., Ojala, A., Peltomaa, E., Nordbo, A., Launiainen, S., Pumpanen, J., Rasilo, T., Hari, P. & Vesala, T., 2011, In : Geophysical Research Letters. 38, p. L18401 5 p.

Research output: Contribution to journalArticleScientificpeer-review

Long-term energy flux measurements and energy balance over a small boreal lake using eddy covariance technique

Nordbo, A., Launiainen, S., Mammarella, I., Leppäranta, M., Huotari, J., Ojala, A. & Vesala, T., 2011, In : Journal of Geophysical Research : Atmospheres. 116, p. 1-17 17 p.

Research output: Contribution to journalArticleScientificpeer-review