Irja Ida Ratikainen
Background and activities
About me
I am a researcher at the Centre for Biodiversity Dynamics (CBD). I have a wide field of interest within behavioural and evolutionary ecology.
I work both empirically and theoretically to answer questions about how organisms adapt to variable and unpredictable environments. When we improve our understanding of how animals and plants adapt to variable environments we will also be better able to predict how they will cope with a changing environment in the future.
I am listed among NTNUs expert lists for journalists, and I am happy to answer questions from journalists or others.
Teaching
I am responsible for the course Nature, Environment and Sustainability (BI2081) If you have any questions regarding this course you are welcome to send me an email.
Scientific, academic and artistic work
A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database
Journal publications
- (2020) Generalists versus specialists in fluctuating environments: a bet-hedging perspective. Oikos. vol. 129.
- (2019) How to quantify thermal acclimation capacity?. Global Change Biology.
- (2019) Bet-hedging across generations can affect the evolution of variance-sensitive strategies within generations. Proceedings of the Royal Society of London. Biological Sciences. vol. 286 (1916).
- (2019) Short‐term insurance versus long‐term bet‐hedging strategies as adaptations to variable environments. Evolution. vol. 73 (2).
- (2019) The coevolution of lifespan and reversible plasticity. Nature Communications. vol. 10 (538).
- (2018) Eco-evolutionary feedbacks - theoretical models and perspectives. Functional Ecology. vol. 33.
- (2018) Differential allocation of parental investment and the trade-off between size and number of offspring. Proceedings of the Royal Society of London. Biological Sciences. vol. 285 (1884).
- (2018) Characteristics determining host suitability for a generalist parasite. Scientific Reports. vol. 8.
- (2017) Differential allocation revisited: When should mate quality affect parental investment?. The American Naturalist. vol. 190 (4).
- (2013) Sex ratio and density affect sexual seleciton in a sex-role reversed fish. Evolution. vol. 67 (11).
- (2013) Adaptive management of body mass by Siberian jays. Animal Behaviour. vol. 85 (2).
- (2012) Private and public information use strategies by foraging groups of wild Siberian jays. Animal Behaviour. vol. 83 (5).
- (2011) Inertia: the discrepancy between individual and common good in dispersal and prospecting behaviour. Biological Reviews. vol. 86 (3).
- (2010) Inertia: the discrepancy between individual and common good in dispersal and prospecting behaviour. Biological Reviews.
- (2010) Social class influences degree of variance sensitivity in wild Siberian jays. Behavioral Ecology. vol. 21 (5).
- (2008) When density dependence is not instantaneous: theoretical developments and management implications. Ecology Letters. vol. 11.
- (2007) Use of winter habitat by roe deer at a northern latitude where Eurasian lynx are present. Journal of Zoology. vol. 273.
Part of book/report
- (2020) kommensalisme. Store norske leksikon (snl.no 2020).
- (2020) Bergmanns regel. Store norske leksikon (snl.no 2020).
- (2020) imprinting - biologi. Store norske leksikon (snl.no 2020).