Research Topics
| I HanskiSummaryAffiliation: University of Helsinki Country: Finland Publications
| Collaborators
|
Detail Information
Publications
Environmental biodiversity, human microbiota, and allergy are interrelatedIlkka Hanski
Department of Biosciences, University of Helsinki, FI 00014 Helsinki, Finland
Proc Natl Acad Sci U S A 109:8334-9. 2012..These results raise fundamental questions about the consequences of biodiversity loss for both allergic conditions and public health in general...
Eco-evolutionary dynamics in a changing worldIlkka Hanski
Department of Biosciences, University of Helsinki, Finland
Ann N Y Acad Sci 1249:1-17. 2012..Eco-evolutionary dynamics may facilitate the persistence of species in changing environments, but typically the evolutionary response only partially compensates for the negative ecological consequences of adverse environmental changes...- Molecular-level variation affects population growth in a butterfly metapopulationIlkka Hanski
Department of Biological and Environmental Sciences, University of Helsinki, Finland
PLoS Biol 4:e129. 2006..These results also demonstrate that the spatial configuration of habitat and spatial dynamics of populations contribute to maintenance of Pgi polymorphism in this species... 
Dispersal-related life-history trade-offs in a butterfly metapopulationIlkka 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....- Deforestation and apparent extinctions of endemic forest beetles in MadagascarIlkka Hanski
Department of Biological and Environmental Sciences, PO Box 65, 00014 University of Helsinki, Finland
Biol Lett 3:344-7. 2007..Currently, roughly 10% of the original forest cover remains. Species-area considerations suggest that this will allow roughly half of the species to persist. Our results are consistent with this prediction... - The metapopulation capacity of a fragmented landscapeI 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... - The world that became ruined. Our cognitive incapacity to perceive large-scale and long-term changes is a major obstacle to rational environmental policiesIlkka Hanski
Department of Biological and Environmental Sciences at University of Helsinki, Finland
EMBO Rep 9:S34-6. 2008 - Resource shifts in Malagasy dung beetles: contrasting processes revealed by dissimilar spatial genetic patternsIlkka Hanski
Department of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
Ecol Lett 11:1208-15. 2008.... - Eco-evolutionary metapopulation dynamics and the spatial scale of adaptationIlkka 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... - Eco-evolutionary spatial dynamics in the Glanville fritillary butterflyIlkka A Hanski
Department of Biosciences, University of Helsinki, FI 00014, Helsinki, Finland
Proc Natl Acad Sci U S A 108:14397-404. 2011.... - Eco-evolutionary dynamics of dispersal in spatially heterogeneous environmentsIlkka Hanski
Department of Biosciences, University of Helsinki, FI 00014 Helsinki, Finland
Ecol Lett 14:1025-34. 2011..The model clarifies the roles of founder events and gene flow in dispersal evolution and resolves a controversy in the literature about the consequences of habitat loss and fragmentation on the evolution of dispersal... - Landscape fragmentation, biodiversity loss and the societal response. The long term consequences of our use of natural resources may be surprising and unpleasantIlkka Hanski
Metapopulation Research Group, University of Helsinki, Finland
EMBO Rep 6:388-92. 2005 - Metapopulation theory for fragmented landscapesIlkka 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.... - Spatially realistic theory of metapopulation ecologyI Hanski
Metapopulation Research Group, Department of Ecology and Systematics, PO Box 17 Arkadiankatu 7, University of Helsinki, 00014 Helsinki, Finland
Naturwissenschaften 88:372-81. 2001..I discuss the principal messages for population ecology and conservation biology, and I also place this theory into a broader context of other approaches to spatial ecology... - Metapopulation-level adaptation of insect host plant preference and extinction-colonization dynamics in heterogeneous landscapesIlkka Hanski
Department of Ecology and Systematics, University of Helsinki, PO Box 65, Viikinkaari 1, FIN 00014, Helsinki, Finland
Theor Popul Biol 64:281-90. 2003..This example illustrates how the ecological extinction-colonization dynamics may be linked with the evolutionary dynamics of life history traits in metapopulations... - Spatially structured metapopulation models: global and local assessment of metapopulation capacityO 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... - Modelling single nucleotide effects in phosphoglucose isomerase on dispersal in the Glanville fritillary butterfly: coupling of ecological and evolutionary dynamicsChaozhi Zheng
Department of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
Philos Trans R Soc Lond B Biol Sci 364:1519-32. 2009.... - Fitness differences associated with Pgi SNP genotypes in the Glanville fritillary butterfly (Melitaea cinxia)L Orsini
Metapopulation Research Group, Department of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
J Evol Biol 22:367-75. 2009..Although this is consistent with direct overdominance at Pgi, we cannot exclude the possibility that heterozygote advantage is caused by the presence of one or more deleterious alleles at linked loci... - Heritability of and strong single gene (Pgi) effects on life-history traits in the Glanville fritillary butterflyI Klemme
Metapopulation Research Group, Department of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
J Evol Biol 22:1944-53. 2009..Selection on Pgi, which furthermore shows spatial and temporal variation, may maintain genetic variance in fitness-related life-history traits. In contrast, we found no strong evidence for life-history trade-offs... - A candidate locus for variation in dispersal rate in a butterfly metapopulationChristoph R Haag
University of Helsinki, Department of Biological and Environmental Sciences, PO Box 65, 00014 Helsinki, Finland
Proc Biol Sci 272:2449-56. 2005..These results also contribute to an emerging understanding of the mechanisms by which population turnover in heterogeneous landscapes may maintain genetic and phenotypic variation across populations... - Flight metabolic rate and Pgi genotype influence butterfly dispersal rate in the fieldKristjan 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... - Three parallel radiations of Canthonini dung beetles in MadagascarHelena Wirta
Metapopulation Research Group, Department of Biological and Environmental Sciences, P O Box 65, FI 00014, University of Helsinki, Finland
Mol Phylogenet Evol 57:710-27. 2010.... - Transient dynamics in metapopulation response to perturbationOtso 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... - Significant effects of Pgi genotype and body reserves on lifespan in the Glanville fritillary butterflyMarjo Saastamoinen
Section of Evolutionary Biology, Institute of Biology, Leiden University, Leiden 2300 RA, The Netherlands
Proc Biol Sci 276:1313-22. 2009..These results indicate life-history trade-offs that involve resource allocation and genotypexenvironment interactions, and these trade-offs are likely to contribute to the maintenance of Pgi polymorphism in the natural populations... - Tracking butterfly movements with harmonic radar reveals an effect of population age on movement distanceOtso 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... - Metapopulation genetic structure of two coexisting parasitoids of the Glanville fritillary butterflyMaaria Kankare
Department of Biological and Environmental Sciences, University of Helsinki, P O Box 65, 00014 Finland
Oecologia 143:77-84. 2005..melitaearum but a very weak pattern in H. horticola. This result is consistent with the known difference in the dispersal range (much longer in H. horticola) and population size (much greater in H. horticola) of the two parasitoids... - Metapopulation models for extinction threshold in spatially correlated landscapesOtso Ovaskainen
Metapopulation Research Group, Department of Ecology and Systematics, Arkadiankatu 7, FIN 00014 University of Helsinki, Finland
J Theor Biol 215:95-108. 2002.... - Age-dependent survival analyzed with Bayesian models of mark-recapture dataChaozhi 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... - An old adaptive radiation of forest dung beetles in MadagascarHelena Wirta
Metapopulation Research Group, Department of Biological and Environmental Sciences, P O Box 65 Viikinkaari 1, FI 00014 University of Helsinki, Finland
Mol Phylogenet Evol 47:1076-89. 2008..Four species of the extant 65 species have shifted to use the dung of the recently introduced cattle in open habitats, allowing these species to greatly expand their geographical ranges... - Genotypic and environmental effects on flight activity and oviposition in the Glanville fritillary butterflyMarjo Saastamoinen
Department of Biological and Environmental Sciences, University of Helsinki, P O Box 65 Viikinkaari 1, Helsinki FI 00014, Finland
Am Nat 171:701-12. 2008..These results suggest that variation in physiological and molecular capacity to sustain active flight at low ambient temperature has significant fitness-related consequences in insects... - From individual behavior to metapopulation dynamics: unifying the patchy population and classic metapopulation modelsOtso 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... - 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... - Patterns of 2-year population cycles in spatially extended host-parasitoid systemsM Rost
Helsinki Institute of Physics, 00014 University of Helsinki, Finland
Theor Popul Biol 59:223-33. 2001..Spatial heterogeneity tends to fix the location of phase boundaries. In contrast, spatially homogeneous temporal fluctuations tend to synchronize populations in large regions... - Nucleotide polymorphism at a gene (Pgi) under balancing selection in a butterfly metapopulationChristopher W Wheat
Department of Biological and Environmental Sciences, University of Helsinki, Finland
Mol Biol Evol 27:267-81. 2010..cinxia and the unrelated Colias eurytheme butterfly suggests a similar but not identical target of balancing selection. Our results indicate convergent evolution between these two species at both the phenotypic and molecular levels... - SNP discovery by mismatch-targeting of Mu transpositionLuisa Orsini
Metapopulation Research Group, Department of Biological and Environmental Sciences, University of Helsinki, Finland
Nucleic Acids Res 35:e44. 2007..The strategy involves standard molecular biology techniques as well as undemanding MuA transposase-catalyzed in vitro transposition reactions, and it is applicable to any organism... - Cyclic dynamics in a simple vertebrate predator-prey communityOlivier Gilg
Department of Ecology and Systematics, Division of Population Biology, Post Office Box 65, 00014 University of Helsinki, Finland
Science 302:866-8. 2003..The cyclic dynamics are driven by a 1-year delay in the numerical response of the stoat and stabilized by strongly density-dependent predation by the arctic fox, the snowy owl, and the long-tailed skua... - Genetic spatial structure in a butterfly metapopulation correlates better with past than present demographic structureL Orsini
Metapopulation Research Group, Department of Biological and Environmental Sciences, University of Helsinki, PO Box 65 Viikinkaari 1, FIN 00014 Helsinki, Finland
Mol Ecol 17:2629-42. 2008..The time lag between major demographic events and change in the genetic spatial structure and diversity has implications for the study of spatial dynamics... - Slow response of plant species richness to habitat loss and fragmentationAveliina Helm
Ecol Lett 9:72-7. 2006..Our conclusions are applicable to temperate grasslands in general, which have lost much area because of agricultural intensification and cessation of traditional management... - Natural selection and population dynamicsIlik Saccheri
School of Biological Sciences, University of Liverpool, The Biosciences Building, Crown Street, Liverpool L69 7ZB, UK
Trends Ecol Evol 21:341-7. 2006..We also discuss the utility, in this context, of inferences from molecular genetic data, placing them within the broader framework of quantitative genetics and life-history evolution... - Rapid transcriptome characterization for a nonmodel organism using 454 pyrosequencingJ Cristobal Vera
Department of Biology, 208 Mueller Laboratory, Pennsylvania State University, University Park, PA 16802, USA
Mol Ecol 17:1636-47. 2008..This development narrows the gap between approaches based on model organisms with rich genetic resources vs. species that are most tractable for ecological and evolutionary studies...