Search Results - "Oksanen, Jari"

How to model species responses along ecological gradients – Huisman–Olff–Fresco models revisited by Jansen, Florian, Oksanen, Jari, Podani, János

“…QUESTIONS: In species response modelling, can a hierarchical logistic regression framework compete against GAM in terms of statistical inference? Are bimodal…”
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Species-specific differences in synthesis of flavonoids and phenolic acids under increasing periods of enhanced blue light by Taulavuori, Kari, Hyöky, Valtteri, Oksanen, Jari, Taulavuori, Erja, Julkunen-Tiitto, Riitta

“…•Blue light boosted productions of many flavonoid and phenolic acid compounds.•In some cases this occurred as a function of lengthening period of blue…”
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Testing the significance of canonical axes in redundancy analysis by Legendre, Pierre, Oksanen, Jari, ter Braak, Cajo J. F.

“…Summary 1. Tests of significance of the individual canonical axes in redundancy analysis allow researchers to determine which of the axes represent variation…”
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Latitudinal insect body size clines revisited: a critical evaluation of the saw-tooth model by Kivelä, Sami M., Välimäki, Panu, Carrasco, David, Mäenpää, Maarit I., Oksanen, Jari

“…1. Insect body size is predicted to increase with decreasing latitude because time available for growth increases. In insects with changing voltinism (i.e…”
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Changes in the abundance, composition and species richness of mountain vegetation in relation to summer grazing by reindeer by Eskelinen, Anu, Jari, Oksanen

“…Question: How do reduced levels of summer grazing by reindeer affect the abundance, composition and species richness of mountain plant communities? Location:…”
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Long- and short-term effects of reindeer grazing on tundra wetland vegetation by Kitti, Heidi, Forbes, Bruce C, Oksanen, Jari

“…We studied long-term (50 years) and short-term (4 years) effects of summer grazing of reindeer on subarctic tundra wetland vegetation. The long-term effects of…”
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Differences in the growth response of three bryophyte species to nitrogen by Salemaa, Maija, Mäkipää, Raisa, Oksanen, Jari

“…The effect of nitrogen on biomass production, shoot elongation and relative density of the mosses Pleurozium schreberi, Hylocomium splendens and Dicranum…”
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Productivity-diversity patterns in arctic tundra vegetation by Virtanen, Risto, Grytnes, John-Arvid, Lenoir, Jonathan, Luoto, Miska, Oksanen, Jari, Oksanen, Lauri, Svenning, Jens-Christian

“…Productivity has long been argued to be a major driver of species richness patterns. In the present study we test alternative productivity–diversity hypotheses…”
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Ecological, topographic and successional patterns across wetlands in a rugged land uplift coast in Nyby, northern Finland by Laitinen, Jarmo, Oksanen, Jari, Maliniemi, Tuija, Kaakinen, Eero, Aapala, Kaisu, Rehell, Sakari

“…We studied 45 mid-boreal wetlands in a rugged land uplift coast with a thin cover of till. Wetlands ranged from 1 to 53 m a.s.l. and were of highly various…”
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Use of sheep grazing in the restoration of semi-natural meadows in northern Finland by Hellström, Kalle, Huhta, Ari-Pekka, Rautio, Pasi, Tuomi, Juha, Oksanen, Jari, Laine, Kari

“… The biodiversity of species‐rich semi‐natural meadows is declining across Europe due to ceased management. In this study we aimed to find out how…”
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Distance decay of similarity in freshwater communities: do macro- and microorganisms follow the same rules? by Astorga, Anna, Oksanen, Jari, Luoto, Miska, Soininen, Janne, Virtanen, Risto, Muotka, Timo

“…Aim: An intensively debated issue in macroecology is whether unicellular organisms show biogeographic patterns different from those of macroorganisms. One…”
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Functional trait metrics are sensitive to the completeness of the species' trait data? by Pakeman, Robin J., Oksanen, Jari

“…Summary Functional diversity (FD) is an important concept for studies of both ecosystem processes and community assembly, so it is important to understand the…”
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Broadleaved trees enhance biodiversity of the understorey vegetation in boreal forests by Salemaa, Maija, Hotanen, Juha-Pekka, Oksanen, Jari, Tonteri, Tiina, Merilä, Päivi

“…•Biodiversity of the understorey vegetation of boreal forests was studied.•Increasing stand density weakened the positive effect of broadleaved trees on plant…”
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Accelerating joint species distribution modelling with Hmsc-HPC by GPU porting by Rahman, Anis Ur, Tikhonov, Gleb, Oksanen, Jari, Rossi, Tuomas, Ovaskainen, Otso

“…Joint species distribution modelling (JSDM) is a widely used statistical method that analyzes combined patterns of all species in a community, linking…”
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Joint species distribution modelling with the r‐package Hmsc by Tikhonov, Gleb, Opedal, Øystein H., Abrego, Nerea, Lehikoinen, Aleksi, Jonge, Melinda M. J., Oksanen, Jari, Ovaskainen, Otso, Golding, Nick

“…Joint Species Distribution Modelling (JSDM) is becoming an increasingly popular statistical method for analysing data in community ecology. Hierarchical…”
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Legacy effects of logging on boreal forest understorey vegetation communities in decadal time scales in northern Finland by Muurinen, Lauralotta, Oksanen, Jari, Vanha-Majamaa, Ilkka, Virtanen, Risto

“…•Common species and mid-successional forests can tolerate moderate timber harvesting.•There is time delay in responses of understorey vegetation…”
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Environmental disturbance can increase beta diversity of stream macroinvertebrate assemblages by Hawkins, Charles P., Mykrä, Heikki, Oksanen, Jari, Vander Laan, Jacob J.

“…Aim: Freshwater biodiversity is declining world-wide as a result of human-caused degradation of freshwater ecosystems. Declines in species richness are well…”
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Confidence Intervals for the Optimum in the Gaussian Response Function by Oksanen, Jari, Läärä, Esa, Tolonen, Kimmo, Warner, Barry G.

“…The optimum of a species on a gradient is an important parameter for ecological interpretation and bioindication. The location of the optimum is easily…”
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Transient Hole Burning and Solvation Dynamics of Chlorophyll b Monomers in Various Solvent Environments by Oksanen, Jari A. I, Martinsson, Peter, Åkesson, Eva, Hynninen, Paavo H, Sundström, Villy

“…We present a femtosecond transient absorption study of chlorophyll b monomers in various solvent environments. Transient absorption spectra and kinetics of…”
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How to model species responses along ecological gradients – H uisman– O lff– F resco models revisited by Jansen, Florian, Oksanen, Jari

“…Abstract Questions In species response modelling, can a hierarchical logistic regression framework compete against GAM in terms of statistical inference? Are…”
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