Search Results - "Kankaala, Paula"

How important are terrestrial organic carbon inputs for secondary production in freshwater ecosystems? by Brett, Michael T., Bunn, Stuart E., Chandra, Sudeep, Galloway, Aaron W. E., Guo, Fen, Kainz, Martin J., Kankaala, Paula, Lau, Danny C. P., Moulton, Timothy P., Power, Mary E., Rasmussen, Joseph B., Taipale, Sami J., Thorp, James H., Wehr, John D.

“…Many freshwater systems receive substantial inputs of terrestrial organic matter. Terrestrially derived dissolved organic carbon (t‐DOC) inputs can modify…”
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Lake browning impacts community structure and essential fatty acid content of littoral invertebrates in boreal lakes by Kesti, Petri, Hiltunen, Minna, Strandberg, Ursula, Vesterinen, Jussi, Taipale, Sami, Kankaala, Paula

“…Many lakes in the northern hemisphere are browning due to increasing concentrations of terrestrial dissolved organic carbon (DOC). The consequences of lake…”
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Differing Daphnia magna assimilation efficiencies for terrestrial, bacterial, and algal carbon and fatty acids by Taipale, Sami J, Brett, Michael T, Hahn, Martin W, Martin-Creuzburg, Dominik, Yeung, Sean, Hiltunen, Minna, Strandberg, Ursula, Kankaala, Paula

“…There is considerable interest in the pathways by which carbon and growth-limiting elemental and biochemical nutrients are supplied to upper trophic levels…”
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Warming Decreases Bioconversion of Polyunsaturated Fatty Acids in Chironomid Larvae Maintained on Cyanobacterium Microcystis by Strandberg, Ursula, Ilo, Timo, Akkanen, Jarkko, Kankaala, Paula

“…Cyanobacteria dominance and warming have been suggested to decrease the production of polyunsaturated fatty acids (PUFA) in freshwater ecosystems…”
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Increasing concentration of polyunsaturated fatty acids in browning boreal lakes is driven by nuisance alga Gonyostomum by Strandberg, Ursula, Hiltunen, Minna, Rissanen, Ninni, Taipale, Sami, Akkanen, Jarkko, Kankaala, Paula

“…Elevated concentrations of dissolved organic carbon (DOC) promote browning of lakes, which alters the physicochemical properties of water and ecosystem…”
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Seasonal shifts in the diet of lake zooplankton revealed by phospholipid fatty acid analysis by TAIPALE, SAMI, KANKAALA, PAULA, HÄMÄLÄINEN, HEIKKI, JONES, ROGER I

“…1. We analysed the phospholipid fatty acid (PLFA) profiles of seston and of the dominant zooplankter, Daphnia longispina, through the open water period in a…”
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Oxidation, efflux, and isotopic fractionation of methane during autumnal turnover in a polyhumic, boreal lake by Kankaala, Paula, Taipale, Sami, Nykänen, Hannu, Jones, Roger I.

“…We studied the oxidation and efflux of methane (CH4) in a small, polyhumic lake, Mekkojärvi (southern Finland), during 6 weeks in autumn when the stability of…”
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Methanotrophic Activity in Relation to Methane Efflux and Total Heterotrophic Bacterial Production in a Stratified, Humic, Boreal Lake by Kankaala, Paula, Huotari, Jussi, Peltomaa, Elina, Saloranta, Tuomo, Ojala, Anne

“…We studied methanotrophic activity in the water column in relation to heterotrophic bacterial production and efflux of methane (CH4) from the lake surface in a…”
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Land Use Affects Carbon Sources to the Pelagic Food Web in a Small Boreal Lake by Rinta, Päivi, van Hardenbroek, Maarten, Jones, Roger I, Kankaala, Paula, Rey, Fabian, Szidat, Sönke, Wooller, Matthew J, Heiri, Oliver

“…Small humic forest lakes often have high contributions of methane-derived carbon in their food webs but little is known about the temporal stability of this…”
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Temporal and Spatial Variation in Methane Emissions from a Flooded Transgression Shore of a Boreal Lake by Kankaala, Paula, Ojala, Anne, Käki, Tiina

“…Variation of CH4 emissions over a three-year period was studied in a reed-dominated (Phragmites australis) littoral transect of a boreal lake undergoing…”
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Methane efflux in relation to plant biomass and sediment characteristics in stands of three common emergent macrophytes in boreal mesoeutrophic lakes by Kankaala, Paula, Käki, Tiina, Mäkelä, Suvi, Ojala, Anne, Pajunen, Hannu, Arvola, Lauri

“…Methane efflux was studied in stands of three emergent macrophyte species (Equisetum fluviatile, Schoenoplectus lacustris and Phragmites australis) commonly…”
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Emission and Oxidation of Methane in Equisetum fluviatile Stands Growing on Organic Sediment and Sand Bottoms by Kankaala, Paula, Bergström, Irina

“…Methane emission and rhizospheric CH4 oxidation were studied in stands of Equisetum fluviatile, a common cryptogam in boreal lakes. The experiment was…”
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Contributions of Different Organic Carbon Sources to Daphnia in the Pelagic Foodweb of a Small Polyhumic Lake: Results from Mesocosm DI¹³C-Additions by Taipale, Sami, Kankaala, Paula, Jones, Roger I

“…Freshwater ecosystems derive organic carbon from both allochthonous and autochthonous sources. We studied the relative contributions of different carbon…”
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Experimental d13C evidence for a contribution of methane to pelagic food webs in lakes by Kankaala, Paula, Taipale, Sami, Grey, Jonathan, Sonninen, Eloni, Arvola, Lauri, Jones, Roger I.

“…We tested the hypothesis that low stable carbon isotope (δ13C) values commonly observed for zooplankton in humic lakes are due to their feeding on isotopically…”
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Nutritional quality of littoral macroinvertebrates and pelagic zooplankton in subarctic lakes by Vesterinen, Jussi, Keva, Ossi, Kahilainen, Kimmo K., Strandberg, Ursula, Hiltunen, Minna, Kankaala, Paula, Taipale, Sami J.

“…Littoral benthic primary production is considered the most important energy source of consumers in subarctic lakes. We analyzed essential fatty acid (EFA) and…”
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Lake-size dependent physical forcing drives carbon dioxide and methane effluxes from lakes in a boreal landscape by Kankaala, Paula, Huotari, Jussi, Tulonen, Tiina, Ojala, Anne

“…We studied the concentrations and diffusive fluxes of carbon dioxide (CO₂) and methane (CH₄) in 12 lakes in a size range of 0.004–35 km² and mean total organic…”
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Periphyton as a key diet source of essential fatty acids for macroinvertebrates across a nutrient and dissolved organic carbon gradient in boreal lakes by Vesterinen, Jussi, Strandberg, Ursula, Taipale, Sami J., Kainz, Martin J., Kankaala, Paula

“…We studied how physiologically important long‐chain polyunsaturated fatty acids (PUFA) in benthic macroinvertebrates (Asellus aquaticus, Chironomidae, and…”
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Fatty acid metabolism and modifications in Chironomus riparius by Strandberg, Ursula, Vesterinen, Jussi, Ilo, Timo, Akkanen, Jarkko, Melanen, Miina, Kankaala, Paula

“…knowledge of fatty acid modifications in consumers is essential for studies using fatty acids as biomarkers. We investigated fatty acid metabolism and possible…”
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Spatial variability of mercury and polyunsaturated fatty acids in the European perch (Perca fluviatilis) – Implications for risk-benefit analyses of fish consumption by Strandberg, Ursula, Palviainen, Marjo, Eronen, Aslak, Piirainen, Sirpa, Laurén, Ari, Akkanen, Jarkko, Kankaala, Paula

“…This study evaluated the spatial variability of risks and benefits of consuming fish from humic and clear lakes. Mercury in fish is a potential risk for human…”
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Increasing temperature and productivity change biomass, trophic pyramids and community‐level omega‐3 fatty acid content in subarctic lake food webs by Keva, Ossi, Taipale, Sami J., Hayden, Brian, Thomas, Stephen M., Vesterinen, Jussi, Kankaala, Paula, Kahilainen, Kimmo K.

“…Climate change in the Arctic is outpacing the global average and land‐use is intensifying due to exploitation of previously inaccessible or unprofitable…”
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