Search Results - "Olli, Kalle"

Phytoplankton Species Richness along Coastal and Estuarine Salinity Continua by Olli, Kalle, Ptacnik, Robert, Klais, Riina, Tamminen, Timo

“…The high number of freshwater species at low salinity and the correspondingly high number of marine species at high salinity enveloping a conspicuous richness…”
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Unraveling the uncertainty and error propagation in the vertical flux Martin curve by Olli, Kalle

“…•I analyzed how measurement errors propagate into vertical flux power model parameters.•Sampling errors propagate disproportionally to power model parameter…”
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Photosynthetic and phenological responses of dwarf shrubs to the depth and properties of snow by Saarinen, Timo, Rasmus, Sirpa, Lundell, Robin, Kauppinen, Olli‐Kalle, Hänninen, Heikki

“…Snow is known to have a major impact on vegetation in arctic ecosystems, but little is known about how snow affects plants in boreal forests, where the…”
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Phytoplankton responses to meteorological and hydrological forcing at decadal to seasonal time scales by Janatian, Nasime, Olli, Kalle, Nõges, Peeter

“…One of the challenges for predicting global change effects on aquatic ecosystems is the vague understanding of the mechanisms of multiple controlling factors…”
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Decadal-scale changes of dinoflagellates and diatoms in the anomalous baltic sea spring bloom by Klais, Riina, Tamminen, Timo, Kremp, Anke, Spilling, Kristian, Olli, Kalle

“…The algal spring bloom in the Baltic Sea represents an anomaly from the winter-spring bloom patterns worldwide in terms of frequent and recurring dominance of…”
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Community assembly and drivers of phytoplankton functional structure by Klais, Riina, Norros, Veera, Lehtinen, Sirpa, Tamminen, Timo, Olli, Kalle

“…Summary We analysed the functional composition of coastal phytoplankton communities (n = 7941) along the gradient from marine to brackish waters of the Baltic…”
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Rehabilitating the cyanobacteria – niche partitioning, resource use efficiency and phytoplankton community structure during diazotrophic cyanobacterial blooms by Olli, Kalle, Klais, Riina, Tamminen, Timo

“…1. Blooms of nitrogen-fixing cyanobacteria are recurrent phenomena in marine and freshwater habitats, and their supplying role in aquatic biogeochemical cycles…”
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Shifting Diatom—Dinoflagellate Dominance During Spring Bloom in the Baltic Sea and its Potential Effects on Biogeochemical Cycling by Spilling, Kristian, Olli, Kalle, Lehtoranta, Jouni, Kremp, Anke, Tedesco, Letizia, Tamelander, Tobias, Klais, Riina, Peltonen, Heikki, Tamminen, Timo

“…The Baltic Sea is affected by a range of human induced environmental pressures such as eutrophication. Here we synthesize the ongoing shift from diatom…”
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Predictable shifts in diversity and ecosystem function in phytoplankton communities along coastal salinity continua by Olli, Kalle, Tamminen, Timo, Ptacnik, Robert

“…Salinity is a major environmental predictor of phytoplankton species richness and composition. We hypothesize that the variation in phytoplankton richness…”
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New production regulates export stoichiometry in the ocean by Tamelander, Tobias, Reigstad, Marit, Olli, Kalle, Slagstad, Dag, Wassmann, Paul

“…The proportion in which carbon and growth-limiting nutrients are exported from the oceans' productive surface layer to the deep sea is a crucial parameter in…”
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Editorial: Changing Plankton Communities: Causes, Effects and Consequences by Spilling, Kristian, Tedesco, Letizia, Klais, Riina, Olli, Kalle

“…[...]Spilling et al. reviewed and synthesize state-of-the-art knowledge on the observed, long-term increase in dinoflagellate abundance in the Baltic Sea…”
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Estimation of winter leaf area index and sky view fraction for snow modelling in boreal coniferous forests: consequences on snow mass and energy balance by Rasmus, Sirpa, Gustafsson, David, Koivusalo, Harri, Laurén, Ari, Grelle, Achim, Kauppinen, Olli-Kalle, Lagnvall, Ola, Lindroth, Anders, Rasmus, Kai, Svensson, Magnus, Weslien, Per

“…Leaf area index (LAI) and canopy coverage are important parameters when modelling snow process in coniferous forests, controlling interception and transmitting…”
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The fate of production in the central Arctic Ocean – top–down regulation by zooplankton expatriates? by Olli, Kalle, Wassmann, Paul, Reigstad, Marit, Ratkova, Tatjana N., Arashkevich, Elena, Pasternak, Anna, Matrai, Patricia A., Knulst, Johan, Tranvik, Lars, Klais, Riina, Jacobsen, A.

“…We estimated primary and bacterial production, mineral nutrients, suspended chlorophyll a (Chl), particulate organic carbon (POC) and nitrogen (PON), abundance…”
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Food Web Functions and Interactions During Spring and Summer in the Arctic Water Inflow Region: Investigated Through Inverse Modeling by Olli, Kalle, Halvorsen, Elisabeth, Vernet, Maria, Lavrentyev, Peter J., Franzè, Gayantonia, Sanz-Martin, Marina, Paulsen, Maria Lund, Reigstad, Marit

“…We used inverse modelling to reconstruct major planktonic food web carbon flows in the Atlantic Water inflow, east and north of Svalbard during spring (18-25…”
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Specific Affinity for Phosphate Uptake and Specific Alkaline Phosphatase Activity as Diagnostic Tools for Detecting Phosphorus-Limited Phytoplankton and Bacteria by Tanaka, Tsuneo, Henriksen, Peter, Lignell, Risto, Kalle Olli, Seppälä, Jukka, Tamminen, Timo, Thingstad, T. Frede

“…We analyzed responses of soluble reactive phosphorus (SRP), bioavailable phosphate (PO4), particulate phosphorus, turnover time of orthophosphate (Tt), and…”
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Diel vertical migration of phytoplankton and heterotrophic flagellates in the Gulf of Riga by Olli, Kalle

“…Vertical distribution of a phototrophic ciliate ( Mesodinium rubrum), autotrophic dinoflagellates ( Peridiniella catenata, Heterocapsa rotundata, Dinophysis…”
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Bacterial biomass and activity in the marginal ice zone of the northern Barents Sea by Tammert, Helen, Olli, Kalle, Sturluson, Maria, Hodal, Helene

“…Bacteria in the Arctic Waters are well adapted to low temperatures and play a key role in the transformation of organic matter. However, the activity of…”
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Self-toxicity of Prymnesium parvum (Prymnesiophyceae) by Olli, Kalle, Trunov, Karolin

“…K. Olli and K. Trunov. 2007. Self-toxicity of Prymnesium parvum (Prymnesiophyceae). Phycologia 46: 109-112. DOI: 10.2216/06-32.1 The marine and brackish water…”
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On the Relative Significance of Bacteria for the Distribution of Polychlorinated Biphenyls in Arctic Ocean Surface Waters by Sobek, Anna, Olli, Kalle, Gustafsson, Örjan

“…This study presents the first field observations of polychlorinated biphenyls (PCB) in bacteria in oceanic waters. To contribute to the limited knowledge of…”
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Environmental safety data on CuO and TiO 2 nanoparticles for multiple algal species in natural water: Filling the data gaps for risk assessment by Joonas, Elise, Aruoja, Villem, Olli, Kalle, Kahru, Anne

“…Most research on nanoparticle (NP) ecotoxicological effects has been conducted on single species in laboratory conditions that are not environmentally…”
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