Browsing NTNU Open by Author "Haaland, Thomas"
Now showing items 1-6 of 6
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Alternative responses to rare selection events are differentially vulnerable to changes in the frequency, scope, and intensity of environmental extremes
Haaland, Thomas; Botero, Carlos A. (Journal article; Peer reviewed, 2019)Extreme weather events are becoming more frequent, severe, and/or widespread as a consequence of anthropogenic climate change. While the economic and ecological implications of these changes have received considerable ... -
Bet-hedging across generations can affect the evolution of variance-sensitive strategies within generations
Haaland, Thomas; Wright, Jonathan; Ratikainen, Irja Ida (Journal article; Peer reviewed, 2019)In order to understand how organisms cope with ongoing changes in environmental variability, it is necessary to consider multiple adaptations to environmental uncertainty on different time scales. Conservative bet-hedging ... -
Differential allocation of parental investment and the trade-off between size and number of offspring
Ratikainen, Irja Ida; Haaland, Thomas; Wright, Jonathan (Journal article; Peer reviewed, 2018)When parents decide how much to invest in current versus future offspring and how many offspring to divide their current investments between, the optimal decision can be affected by the quality of their partner. This ... -
Differential allocation revisited: When should mate quality affect parental investment?
Haaland, Thomas; Wright, Jonathan; Kuijper, Bram; Ratikainen, Irja Ida (Journal article; Peer reviewed, 2017)Differential allocation (DA) is the adaptive adjustment of reproductive investment (up or down) according to partner quality. A lack of theoretical treatments has led to some confusion in the interpretation of DA in the ... -
Effects of environmental variation on the evolution of pure, conditional and learned social foraging strategies
Brady, Micah Allen (Master thesis, 2024)The behavior of animals is influenced by genetic and environmental factors as well as the interactions between the two. It is also influenced by the behavior of others. The Producer-Scrounger model is a classic model that ... -
Short‐term insurance versus long‐term bet‐hedging strategies as adaptations to variable environments
Haaland, Thomas; Wright, Jonathan; Tufto, Jarle; Ratikainen, Irja Ida (Journal article; Peer reviewed, 2018)Understanding how organisms adapt to environmental variation is a key challenge of biology. Central to this are bet‐hedging strategies that maximize geometric mean fitness across generations, either by being conservative ...