Samuli Helle
Ph.D., Docent
sayrhe@utu.fi +358 29 450 4887 +358 45 355 7634 |
Evolutionary ecology; demography; epidemiology; statistics; fishing.
My main research interest is human evolutionary demography in preindustrial populations. In my research I use historical demographic data from northern Fennoscandia that contain people practicing traditional subsistence modes as well small-scale agriculture and trading. This data set is accompanied with wealth of information on how those people lived and on their environmental conditions. I also work sporadically with other study systems related to evolutionary psychology, evolutionary medicine and behavioral ecology.
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- Education, height and reproduction: The role of genetic and environmental factors (2012)
- Behavior Genetics
- Feather growth bars as a biomarker of habitat fragmentation in the Eurasian treecreeper (2012)
- Ecological Indicators
- Hand Asymmetry Does Not Relate to Key Life History Traits in Post-Menopausal Contemporary Finnish Women (2012)
- PLoS ONE
- Parental and genetic factors rather than nesting forest patch size affect physiological traits of offspring in an area-sensitive passerine: an experimental study (2012)
- Ibis
- Allocating Logging Rights in Peruvian Amazonia-Does It Matter to Be Local? (2011)
- PLoS ONE
- Digit ratios have poor indicator value in a wild bird population (2011)
- Behavioral Ecology and Sociobiology
- Fluctuating asymmetry as a biomarker of habitat fragmentation in an area-sensitive passerine, the Eurasian treecreeper (Certhia familiaris) (2011)
- Ecological Indicators
- Women's age at menarche and offspring sex ratio (2011)
- Human Reproduction
- Carotenoid Composition of Invertebrates Consumed by Two Insectivorous Bird Species (2010)
- Journal of Chemical Ecology
- Digit length ratio (2D:4D) and variation in key life-history traits and fitness in contemporary Finnish women (2010)
- Behavioral Ecology
- Does Second-to-Fourth Digit Length Ratio (2D:4D) Predict Age at Menarche in Women? (2010)
- American Journal of Human Biology
- Fluctuating feather asymmetry in relation to corticosterone levels is sex-dependent in Eurasian treecreeper (Certhia familiaris) nestlings (2010)
- Biology Letters
- Food availability at birth limited reproductive success in historical humans (2010)
- Ecology
- Maternal corticosterone but not testosterone level is associated with the ratio of second-to-fourth digit length (2D:4D) in field vole offspring (Microtus agrestis) (2010)
- Physiology and Behavior
- On the number of sons born and shorter lifespan in historical Sami mothers (2010)
- Proceedings of the Royal Society B: Biological Sciences
- Digit length ratio (2D/4D): comparing measurements from X-rays and photographs in field voles (Microtus agrestis) (2009)
- Behavioral Ecology and Sociobiology
- Evolutionary ecology of human birth sex ratio under the compound influence of climate change, famine, economic crises and wars (2009)
- Journal of Animal Ecology
- Latitudinal Gradient in 2D:4D (2009) Helle S, Laaksonen T
- Solar activity during gestation does not affect human lifespan: evidence from national data (2009)
- Biogerontology
- Women With Long Menstrual Cycles Have More Daughters (2009) Helle S
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