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Publikationer 1983 2019

Artikel

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

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

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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

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

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Carbon budget for the pelagic food web of the euphotic zone of a boreal lake

Kankaala, P., Arvola, L., Tulonen, T. & Ojala, A., 1996, I : Canadian Journal of Fisheries and Aquatic Sciences. 53, s. 1663-1674

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer 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, I : Journal of Geophysical Research : Biogeosciences. 116, G03009, s. 1-13 13 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Changes in nutrient retention capacity of boreal aquatic ecosystems under climate warming: a simulation study

Kankaala, P., Ojala, A., Tulonen, T. & Arvola, L., 2002, I : Hydrobiologia. 469, s. 67-76

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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

Peltomaa, E., Ojala, A., Holopainen, A-L. & Salonen, K., 27 sep 2013, I : Boreal Environment Research. 18, 5, s. 387-400 14 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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CO2 and CH4 fluxes during spring and autumn mixing periods in a boreal lake (Paajarvi, southern Finland)

Bellido, J. L., Tulonen, T., Kankaala, P. & Ojala, A., 2009, I : Journal of Geophysical Research. 114, 12 s., 04007.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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, I : PLoS One. 9, 11, 13 s., 111942.

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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, I : Freshwater Science. 34, 2, s. 440-455 16 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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, I : Biogeochemistry. 113, 1-3, s. 613-627 15 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer 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, I : Journal of Geophysical Research : Biogeosciences. 118, 2, s. 445-461 17 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Control mechanisms of cyanobacterial blooms in lakes of varying trophic status and morphometry

Mäkelä, S., Huitu, E., Tulonen, T. & Ojala, A., 2005, I : Verhandlungen der Internationalen Vereinigung für theoretische und angewandte Limnologie. 29, s. 953-955 3 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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, I : Algal Research. 35, s. 76-84 9 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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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, I : Bioresource Technology. 238, s. 205-213 9 s.

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Diel variation in methane emissions from stands of Phragmites australis (CAV) Trin. Ex Steud. and Typha latifolia L. in a boreal lake

Käki, T., Ojala, A. & Kankaala, P., 2001, I : Aquatic Botany. 71, s. 259-271

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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, I : Inland waters.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Eddy covariance measurements of carbon exchange and latent and sensible heat fluxes over a boreal lake for a full open-water

Vesala, T., Huotari, J., Rannik, U., Suni, T., Smolander, S., Sogachev, A., Launiainen, S. & Ojala, A., 2006, I : Journal of Geophysical Research. 111, D11, s. D11101 12 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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, I : Journal of Geophysical Research : Biogeosciences. 123, 7, s. 2212-2233 22 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Effects of climate change on freshwater ecosystems

Kankaala, P., Ojala, A., Tulonen, T. & Haapamäki, J., 1996, I : Lammi Notes. 23, s. 4-10

Forskningsoutput: TidskriftsbidragArtikelVetenskaplig

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, I : Tellus. Series B: Chemical and Physical Meteorology. 66, 16 s., 22827.

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Effects of experimental acidification on phyto-. bacterio- and zooplankton in enlosures in a highly humica lake

Arvola, L., Salonen, K., Bergström, I., Heinänen, A. & Ojala, A., 1986, I : Internationale Revue der gesamten Hydrobiologie. 71, 6, s. 737-758

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Effects of light and temperature on the cell size and some biochemical components in two freshwater cryptophytes.

Ojala, A., 1993, I : Nordic Journal of Botany. 13, s. 697-705

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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, I : Boreal Environment Research. 23, s. 237-247 11 s.

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Effects of temperature and irradiance on the growth of two freshwater photosynthetic cryptophytes

Ojala, A., 1993, I : Journal of Phycology. 29, s. 278-284

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer 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, I : Journal of Geophysical Research : Atmospheres. 120, 15, s. 7412-7428 17 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Efficient gas exchange between a boreal river and the atmosphere

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

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Factors controlling production of phytoplankton and bacteria under ice in a humic, boreal lake

Tulonen, T., Kankaala, P., Ojala, A. & Arvola, L., 1994, I : Journal of Plankton Research. 16, 10, s. 1411-1432

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer 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, I : Aquatic Microbial Ecology. 71, 2, s. 165-178 14 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Forestry in catchments: Effects on water quality, plankton, zoobenthos and fish in small lakes

Rask, M., Nyberg, K., Markkanen, S-L. & Ojala, A., 1998, I : Boreal Environment Research. 3, s. 75-86

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Grazing of heterotrophic nanoflagellates on the eukaryotic picoautotroph Choricystis sp.

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

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Growth and production of bacterioplankton in a deep mesohumic boreal lake

Tulonen, T., Kankaala, P., Arvola, L. & Ojala, A., 2000, I : Archiv für Hydrobiologie. 147, s. 311-325

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Growth of Daphnia longispina L. in a polyhumic lake under various availabilities of algal, bacterial and detrital food.

Ojala, A., Kankaala, P., Kairesalo, T. & Salonen, K., 1995, I : Hydrobiologia. 315, s. 119-134

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Growth of migrating and non-migrating cryptophytes in thermally and chemically stratified experimental columns

Ojala, A., Heaney, S. I., Arvola, L. & Barbosa, F., 1996, I : Freshwater Biology. 35, s. 599-608

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

High-frequency measurements of productivity of planktonic algae using rugged nondispersive infrared carbon dioxide probes

Hari, P., Pumpanen, J. S., Huotari, J., Kolari, P., Grace, J., Vesala, T. & Ojala, A., 2008, I : Limnology and Oceanography: Methods. 6, s. 347-354 8 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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, I : Biogeosciences. 15, 7, s. 2021-2032 12 s.

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Impact of climate change on carbon flux in freshwater ecosystems (CLIMFRESH)

Saarinen, T., Ojala, A. & Kairesalo, T., 2000, I : Lammi Notes. 28, s. 3-4

Forskningsoutput: TidskriftsbidragArtikelVetenskaplig

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, (Insänt) I : Ecosystems.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer 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, I : PeerJ. 7, 19 s., 6624.

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In situ diel DNA synthesis of a Cryptomonas sp. in a hypereutrophic tarn

Ojala, A., 1993, I : Annales Botanici Fennici. 30, s. 119-129

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Interlake variation and environmental controls of denitrification across different geographical scales

Rissanen, A., Tiirola, M., Hietanen, S. & Ojala, A., 3 apr 2013, I : Aquatic Microbial Ecology. 69, 1, s. 1-16 16 s.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review