O Ovaskainen

Summary

Affiliation: University of Helsinki
Country: Finland

Publications

  1. pmc Combining high-throughput sequencing with fruit body surveys reveals contrasting life-history strategies in fungi
    Otso Ovaskainen
    Metapopulation Research Group, Department of Biosciences, University of Helsinki, Helsinki, Finland
    ISME J 7:1696-709. 2013
  2. pmc Community-level phenological response to climate change
    Otso Ovaskainen
    Department of Biosciences, University of Helsinki, 00014, Helsinki, Finland
    Proc Natl Acad Sci U S A 110:13434-9. 2013
  3. doi request reprint Stochastic models of population extinction
    Otso Ovaskainen
    Metapopulation Research Group, Department of Biosciences, University of Helsinki, FI 00014, Finland
    Trends Ecol Evol 25:643-52. 2010
  4. pmc Space and stochasticity in population dynamics
    Otso Ovaskainen
    Department of Biological and Environmental Sciences, University of Helsinki, P O Box 65, FI 00014, Helsinki, Finland
    Proc Natl Acad Sci U S A 103:12781-6. 2006
  5. pmc A new method to uncover signatures of divergent and stabilizing selection in quantitative traits
    Otso Ovaskainen
    Department of Biosciences, University of Helsinki, FI 00014 Helsinki, Finland
    Genetics 189:621-32. 2011
  6. doi request reprint Analytical and numerical tools for diffusion-based movement models
    Otso Ovaskainen
    Department of Biological and Environmental Sciences, PO Box 65, Viikinkaari 1, FI 00014 University of Helsinki, Finland
    Theor Popul Biol 73:198-211. 2008
  7. pmc A Bayesian framework for comparative quantitative genetics
    Otso Ovaskainen
    Department of Biological and Environmental Sciences, PO Box 65, F1 00014, University of Helsinki, Finland
    Proc Biol Sci 275:669-78. 2008
  8. pmc Tracking butterfly movements with harmonic radar reveals an effect of population age on movement distance
    Otso Ovaskainen
    Department of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 1, 00014, Helsinki, Finland
    Proc Natl Acad Sci U S A 105:19090-5. 2008
  9. ncbi request reprint Making more out of sparse data: hierarchical modeling of species communities
    Otso Ovaskainen
    Department of Biosciences, University of Helsinki, Viikinkaari 1, FI 00014 University of Helsinki, Finland
    Ecology 92:289-95. 2011
  10. ncbi request reprint Modeling species co-occurrence by multivariate logistic regression generates new hypotheses on fungal interactions
    Otso Ovaskainen
    Department of Biosciences, University of Helsinki, Viikinkaari 1, FI 00014 Helsinki, Finland
    Ecology 91:2514-21. 2010

Detail Information

Publications37

  1. pmc Combining high-throughput sequencing with fruit body surveys reveals contrasting life-history strategies in fungi
    Otso Ovaskainen
    Metapopulation Research Group, Department of Biosciences, University of Helsinki, Helsinki, Finland
    ISME J 7:1696-709. 2013
    ..We show with the help of high-throughput sequencing that some of these species are more abundant as mycelium in wood than what could be expected from their occurrence as fruit bodies. ..
  2. pmc Community-level phenological response to climate change
    Otso Ovaskainen
    Department of Biosciences, University of Helsinki, 00014, Helsinki, Finland
    Proc Natl Acad Sci U S A 110:13434-9. 2013
    ..Our results illustrate how a multidimensional change in the physical environment has translated into a community-level change in phenology. ..
  3. doi request reprint Stochastic models of population extinction
    Otso Ovaskainen
    Metapopulation Research Group, Department of Biosciences, University of Helsinki, FI 00014, Finland
    Trends Ecol Evol 25:643-52. 2010
    ..It yields, therefore, sharp insights into extinction processes and has great potential for further applications in theoretical biology...
  4. pmc Space and stochasticity in population dynamics
    Otso Ovaskainen
    Department of Biological and Environmental Sciences, University of Helsinki, P O Box 65, FI 00014, Helsinki, Finland
    Proc Natl Acad Sci U S A 103:12781-6. 2006
    ....
  5. pmc A new method to uncover signatures of divergent and stabilizing selection in quantitative traits
    Otso Ovaskainen
    Department of Biosciences, University of Helsinki, FI 00014 Helsinki, Finland
    Genetics 189:621-32. 2011
    ....
  6. doi request reprint Analytical and numerical tools for diffusion-based movement models
    Otso Ovaskainen
    Department of Biological and Environmental Sciences, PO Box 65, Viikinkaari 1, FI 00014 University of Helsinki, Finland
    Theor Popul Biol 73:198-211. 2008
    ..I illustrate the behavior of the model and the mathematical theory by examining the effects of a hypothetical movement barrier and advection caused by prevailing wind conditions...
  7. pmc A Bayesian framework for comparative quantitative genetics
    Otso Ovaskainen
    Department of Biological and Environmental Sciences, PO Box 65, F1 00014, University of Helsinki, Finland
    Proc Biol Sci 275:669-78. 2008
    ....
  8. pmc Tracking butterfly movements with harmonic radar reveals an effect of population age on movement distance
    Otso Ovaskainen
    Department of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 1, 00014, Helsinki, Finland
    Proc Natl Acad Sci U S A 105:19090-5. 2008
    ..Butterflies from all population types showed a strong tendency to follow habitat edges between the open study area and the neighboring woodlands...
  9. ncbi request reprint Making more out of sparse data: hierarchical modeling of species communities
    Otso Ovaskainen
    Department of Biosciences, University of Helsinki, Viikinkaari 1, FI 00014 University of Helsinki, Finland
    Ecology 92:289-95. 2011
    ....
  10. ncbi request reprint Modeling species co-occurrence by multivariate logistic regression generates new hypotheses on fungal interactions
    Otso Ovaskainen
    Department of Biosciences, University of Helsinki, Viikinkaari 1, FI 00014 Helsinki, Finland
    Ecology 91:2514-21. 2010
    ..We use our results to derive hypotheses on species interactions that can be tested in future experimental work...
  11. doi request reprint An empirical test of a diffusion model: predicting clouded apollo movements in a novel environment
    Otso Ovaskainen
    Department of Biological and Environmental Sciences, University of Helsinki, P O Box 65, FI 00014 Helsinki, Finland
    Am Nat 171:610-9. 2008
    ..We illustrate how the parameterized model can be used to derive biologically relevant measures of functional connectivity, thus linking movement data with models of spatial population dynamics...
  12. ncbi request reprint Bayesian methods for analyzing movements in heterogeneous landscapes from mark-recapture data
    Otso Ovaskainen
    Department of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
    Ecology 89:542-54. 2008
    ..We show that the parameter estimates can be considerably improved by alternative study designs, such as releasing some of the individuals into the unsuitable matrix, or spending part of the recapture effort in the matrix...
  13. ncbi request reprint Inferring evolutionary signals from ecological data in a plant-pathogen metapopulation
    Otso Ovaskainen
    Metapopulation Research Group, Department of Biological and Environmental Sciences, P O Box 65, Viikinkaari 1, University of Helsinki, FI 00014, Finland
    Ecology 87:880-91. 2006
    ....
  14. ncbi request reprint Spatially structured metapopulation models: global and local assessment of metapopulation capacity
    O Ovaskainen
    Department of Ecology and Systematics, Metapopulation Research Group, Arkadiankatu 7, University of Helsinki, FIN 00014, Finland
    Theor Popul Biol 60:281-302. 2001
    ..The metapopulation capacities and the measures of the dynamic significance of particular patches can be calculated for real patch networks for applications in metapopulation ecology, landscape ecology, and conservation biology...
  15. ncbi request reprint Transient dynamics in metapopulation response to perturbation
    Otso Ovaskainen
    Department of Ecology and Systematics, Metapopulation Research Group, Viikinkaari 1, FIN 00014, Finland
    Theor Popul Biol 61:285-95. 2002
    ..We demonstrate that the essential behaviour of the n-dimensional spatially realistic Levins model is captured by the one-dimensional Levins model with appropriate parameter transformations...
  16. ncbi request reprint Metapopulation models for extinction threshold in spatially correlated landscapes
    Otso Ovaskainen
    Metapopulation Research Group, Department of Ecology and Systematics, Arkadiankatu 7, FIN 00014 University of Helsinki, Finland
    J Theor Biol 215:95-108. 2002
    ....
  17. ncbi request reprint Long-term persistence of species and the SLOSS problem
    Otso Ovaskainen
    Metapopulation Research Group, Department of Ecology and Systematics, 65, Viikinkaari 1, FIN 00014, University of Helsinki, Finland
    J Theor Biol 218:419-33. 2002
    ..Here this relationship is summarized by a single factor zeta, termed the patch area scaling factor...
  18. ncbi request reprint Habitat destruction, habitat restoration and eigenvector-eigenvalue relations
    Otso Ovaskainen
    Department of Ecology and Systematics, University of Helsinki, PO Box 65, Viikinkaari 1, FIN 00014, Helsinki, Finland
    Math Biosci 181:165-76. 2003
    ....
  19. ncbi request reprint Mathematical tools for planning effective intervention scenarios for sexually transmitted diseases
    Otso T Ovaskainen
    Metapopulation Research Group, Department of Ecology and Systematics, P O Box 65, Viikinkaari 1, FIN 00014 University of Helsinki, Finland
    Sex Transm Dis 30:388-94. 2003
    ..We studied the dynamics of sexually transmitted diseases in structured populations, deriving analogies from the theory of metapopulations...
  20. ncbi request reprint How much does an individual habitat fragment contribute to metapopulation dynamics and persistence?
    Otso Ovaskainen
    Metapopulation Research Group, Department of Ecology and Systematics, University of Helsinki, Post Office Box 65, Viikinkaari 1, FI 00014 Helsinki, Finland
    Theor Popul Biol 64:481-95. 2003
    ..We expect that the measures of habitat fragment value described and analysed here have applications in landscape ecology and in conservation biology...
  21. ncbi request reprint From individual behavior to metapopulation dynamics: unifying the patchy population and classic metapopulation models
    Otso Ovaskainen
    Metapopulation Research Group, Department of Biological Science, University of Helsinki, P O Box 65, Viikinkaari 1, FI 00014, Finland
    Am Nat 164:364-77. 2004
    ..The modeling approach that we describe here provides a unified framework for patchy populations with much movements among habitat patches and classic metapopulations with infrequent movements...
  22. ncbi request reprint Asymptotically exact analysis of stochastic metapopulation dynamics with explicit spatial structure
    Otso Ovaskainen
    Metapopulation Research Group, Department of Biological and Environmental Sciences, P O Box 65, Viikinkaari 1, FIN 00014 University of Helsinki, Finland
    Theor Popul Biol 69:13-33. 2006
    ..Comparison with simulations show that the analytical results are not only asymptotically exact (as L-->infinity), but a good approximation also when L is relatively small...
  23. pmc Modelling single nucleotide effects in phosphoglucose isomerase on dispersal in the Glanville fritillary butterfly: coupling of ecological and evolutionary dynamics
    Chaozhi Zheng
    Department of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
    Philos Trans R Soc Lond B Biol Sci 364:1519-32. 2009
    ....
  24. ncbi request reprint The metapopulation capacity of a fragmented landscape
    I Hanski
    Department of Ecology and Systematics, University of Helsinki, Finland
    Nature 404:755-8. 2000
    ..The metapopulation capacity should find many applications in metapopulation ecology, landscape ecology and conservation biology...
  25. doi request reprint Hierarchical metapopulation dynamics of two aphid species on a shared host plant
    Chaozhi Zheng
    Department of Biological and Environmental Sciences, University of Helsinki, FI 00014 Helsinki, Finland
    Am Nat 174:331-41. 2009
    ....
  26. ncbi request reprint Age-dependent survival analyzed with Bayesian models of mark-recapture data
    Chaozhi Zheng
    Department of Biological and Environmental Sciences, P O Box 65, Viikinkaari I, FI 00014 University of Helsinki, Finland
    Ecology 88:1970-6. 2007
    ..Capture probability decreased with increasing temperature and decreased with increasing mobility of individuals...
  27. ncbi request reprint Metapopulation theory for fragmented landscapes
    Ilkka Hanski
    Department of Ecology and Systematics, Metapopulation Research Group, Division of Population Biology, University of Helsinki, P O Box 65, Viikinkaari 1, FIN 00014, Helsinki, Finland
    Theor Popul Biol 64:119-27. 2003
    ....
  28. doi request reprint Summer movements, predation and habitat use of wolves in human modified boreal forests
    Eliezer Gurarie
    National Marine Mammal Laboratory, NOAA Fisheries, 7600 Sand Point Way NE, Seattle, WA 98115, USA
    Oecologia 165:891-903. 2011
    ..Generally, wolves displayed a high level of adaptability, successfully exploiting direct and indirect human-derived modifications to the boreal forest environment...
  29. ncbi request reprint Dispersal-related life-history trade-offs in a butterfly metapopulation
    Ilkka Hanski
    Department of Biological and Environmental Sciences, P O Box 65, Viikinkaari 1, FI 00014 University of Helsinki, Finland
    J Anim Ecol 75:91-100. 2006
    ....
  30. ncbi request reprint Spatial location dominates over host plant genotype in structuring an herbivore community
    Ayco J M Tack
    Metapopulation Research Group, Department of Biosciences, University of Helsinki, P O Box 65, Viikinkaari 1, Helsinki FI 00014, Finland
    Ecology 91:2660-72. 2010
    ..We conclude that in our study system, spatial processes play a major role in structuring these insect communities at both the landscape and regional scales, whereas host plant genotype seems of secondary importance...
  31. doi request reprint Spatial population structure of a specialist leaf-mining moth
    Sofia Gripenberg
    Metapopulation Research Group, Department of Biological and Environmental Sciences, PO Box 65, Viikinkaari 1, FI 00014 University of Helsinki, Finland
    J Anim Ecol 77:757-67. 2008
    ....
  32. ncbi request reprint Flight metabolic rate and Pgi genotype influence butterfly dispersal rate in the field
    Kristjan Niitepõld
    Department of Biological and Environmental Sciences, P O Box 65 Viikinkaari 1, University of Helsinki, Helsinki FI 00014, Finland
    Ecology 90:2223-32. 2009
    ..These results indicate a fitness advantage to the heterozygous genotype in low temperatures and suggest a mechanism by which varying environmental conditions maintain genetic polymorphism in populations...
  33. doi request reprint Eco-evolutionary metapopulation dynamics and the spatial scale of adaptation
    Ilkka Hanski
    Department of Biosciences, University of Helsinki, P O Box 65, FI 00014 University of Helsinki, Finland
    Am Nat 177:29-43. 2011
    ..The model can be applied to real patch networks with given sizes, qualities, and spatial positions of habitat patches...
  34. doi request reprint Environmentally induced dispersal-related life-history syndrome in the tropical butterfly, Bicyclus anynana
    Marjo Saastamoinen
    Metapopulation Research Group, Department of Biosciences, University of Helsinki, Helsinki, Finland
    J Evol Biol 25:2264-75. 2012
    ....
  35. doi request reprint Bringing habitat information into statistical tests of local adaptation in quantitative traits: a case study of nine-spined sticklebacks
    M Karhunen
    Department of Biosciences, University of Helsinki, PO Box 65, FI 00014, Finland
    Evolution 68:559-68. 2014
    ..The results give quantitative support for earlier qualitative assessments, which have attributed the observed differentiation to adaptive divergence in response to differing ecological conditions in pond and marine habitats. ..
  36. doi request reprint DRIFTSEL: an R package for detecting signals of natural selection in quantitative traits
    M Karhunen
    Department of Biosciences, University of Helsinki, Helsinki, Finland
    Mol Ecol Resour 13:746-54. 2013
    ..DRIFTSEL can also be used to perform usual quantitative genetic analyses in common-garden study designs...
  37. doi request reprint Bayesian approaches in evolutionary quantitative genetics
    R B O'Hara
    Department of Mathematics and Statistics, University of Helsinki, Helsinki, Finland
    J Evol Biol 21:949-57. 2008
    ....