Sigurd Einum
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View article: Energy availability influences the dynamics of thermal phenotypic plasticity
Energy availability influences the dynamics of thermal phenotypic plasticity Open
Here we test whether food availability limits phenotypic plasticity in thermal tolerance in the amphipod Echinogammarus marinus. We shifted specimens from 10°C to an acclimation temperature of 20°C, and kept them there for different durati…
View article: Linking Individual Performance to Density‐Dependent Population Dynamics to Understand Temperature‐Mediated Genotype Coexistence
Linking Individual Performance to Density‐Dependent Population Dynamics to Understand Temperature‐Mediated Genotype Coexistence Open
The persistence of local populations exposed to climate change depends on their adaptive potential and on the ability of local individuals to compete with migrating conspecifics tracking environmental shifts. Modern coexistence theory (MCT…
View article: Plasticity rates and capacities differ across traits and temperatures: Insights from physiological responses of aquatic organisms to salinity change
Plasticity rates and capacities differ across traits and temperatures: Insights from physiological responses of aquatic organisms to salinity change Open
Phenotypic plasticity allows organisms to track changing trait optima under environmental variation. To what extent this is achieved will be jointly determined by the rate of and the capacity for plasticity. Despite the potential fitness i…
View article: High Capacity for Physiological Plasticity Occurs at a Slow Rate in Ectotherms
High Capacity for Physiological Plasticity Occurs at a Slow Rate in Ectotherms Open
Phenotypic plasticity enables organisms to express a phenotype that is optimal in their current environment. The ability of organisms to obtain the optimum phenotype is determined by their (i) capacity for plasticity, which facilitates phe…
View article: Among‐river pattern in relative abundance of two salmonid fishes reflects temperature‐dependent competition
Among‐river pattern in relative abundance of two salmonid fishes reflects temperature‐dependent competition Open
Temperature is a key driver in determining species distribution and abundance across climatic and geographical gradients. This occurs through direct physiological effects of temperature on performance, but may also result from temperature …
View article: Novel large‐scale mapping highlights poor state of sea trout populations
Novel large‐scale mapping highlights poor state of sea trout populations Open
The state of sea trout in 1251 Norwegian watercourses was assessed based on a scoring system for human pressures, abundance data, and local knowledge. Over 16,000 km of rivers and lakes were available to sea trout in these watercourses, sp…
View article: Predation of Atlantic salmon across ontogenetic stages and impacts on populations
Predation of Atlantic salmon across ontogenetic stages and impacts on populations Open
Managers and stakeholders increasingly ask whether predation is a driving force behind the poor status of many species, and whether predator control is likely to be a successful management action to intervene. We review existing literature…
View article: Impact of the antidepressant Bupropion on the Dynamic Energy Budget of Daphnia magna
Impact of the antidepressant Bupropion on the Dynamic Energy Budget of Daphnia magna Open
Psychiatric drugs are considered among the emerging contaminants of concern in ecological risk assessment, due to their potential to disrupt homeostasis in aquatic organisms. Bupropion is an antidepressant that acts by selective reuptake i…
View article: Inferring temperature adaptation from thermal performance curves of somatic growth rate: The importance of growth measurements and mortality
Inferring temperature adaptation from thermal performance curves of somatic growth rate: The importance of growth measurements and mortality Open
When comparing somatic growth thermal performance curves (TPCs), higher somatic growth across experimental temperatures is often observed for populations originating from colder environments. Such countergradient variation has been suggest…
View article: Divergence in rates of phenotypic plasticity among ectotherms
Divergence in rates of phenotypic plasticity among ectotherms Open
An individual's fitness cost associated with environmental change likely depends on the rate of adaptive phenotypic plasticity, and yet our understanding of plasticity rates in an ecological and evolutionary context remains limited. We pro…
View article: Insights into the quantification and reporting of model-related uncertainty across different disciplines
Insights into the quantification and reporting of model-related uncertainty across different disciplines Open
Quantifying uncertainty associated with our models is the only way we can express how much we know about any phenomenon. Incomplete consideration of model-based uncertainties can lead to overstated conclusions with real-world impacts in di…
View article: Data from systematic audit for paper: Insights into the quantification and reporting of model-related uncertainty across different disciplines
Data from systematic audit for paper: Insights into the quantification and reporting of model-related uncertainty across different disciplines Open
This upload contains 7 data files (each contains cleaned and compiled data for a given scientific field) and 2 R scripts. These files support the paper: Insights into the quantification and reporting of model-related uncertainty across dif…
View article: Data from systematic audit for paper: Insights into the quantification and reporting of model-related uncertainty across different disciplines
Data from systematic audit for paper: Insights into the quantification and reporting of model-related uncertainty across different disciplines Open
This upload contains 7 data files (each contains cleaned and compiled data for a given scientific field) and 2 R scripts. These files support the paper: Insights into the quantification and reporting of model-related uncertainty across dif…
View article: Divergence in rates of phenotypic plasticity among ectotherms
Divergence in rates of phenotypic plasticity among ectotherms Open
An individual’s fitness cost associated with environmental change likely depends on the rate of adaptive phenotypic plasticity, and yet our understanding of plasticity rates in an ecological and evolutionary context remains limited. We pro…
View article: Stochastic variation in gut bacterial community affects reproductive rates in the water flea <i>Daphnia magna</i>
Stochastic variation in gut bacterial community affects reproductive rates in the water flea <i>Daphnia magna</i> Open
It is well-documented that perturbation of the gut bacterial community can influence the reproductive rates of the host. Less is known about how natural ecological processes can change the bacterial composition in the gut and how such chan…
View article: Evolution of population dynamics following invasion by a non‐native predator
Evolution of population dynamics following invasion by a non‐native predator Open
Invasive predatory species are frequently observed to cause evolutionary responses in prey phenotypes, which in turn may lead to evolutionary shifts in the population dynamics of prey. Research has provided a link between rates of predatio…
View article: How is model-related uncertainty quantified and reported in different disciplines?
How is model-related uncertainty quantified and reported in different disciplines? Open
How do we know how much we know? Quantifying uncertainty associated with our modelling work is the only way we can answer how much we know about any phenomenon. With quantitative science now highly influential in the public sphere and the …
View article: Environmental change and the rate of phenotypic plasticity
Environmental change and the rate of phenotypic plasticity Open
With rapid and less predictable environmental change emerging as the ‘new norm’, understanding how individuals tolerate environmental stress via plastic, often reversible changes to the phenotype (i.e., reversible phenotypic plasticity, RP…
View article: Evolution of population dynamics following invasion by a non-native predator
Evolution of population dynamics following invasion by a non-native predator Open
Invasive predatory species are frequently observed to cause evolutionary responses in prey phenotypes, which in turn may translate into evolution of the prey’s population dynamics. Research has provided a link between rates of predation an…
View article: Variation in the rate of phenotypic plasticity among ectotherms
Variation in the rate of phenotypic plasticity among ectotherms Open
An individual’s fitness cost associated with environmental change depends on the rate of adaptive phenotypic plasticity, and yet our understanding of plasticity rates in an ecological and evolutionary context remains limited. We provide th…
View article: Evolutionary change in metabolic rate of <i>Daphnia pulicaria</i> following invasion by the predator <i>Bythotrephes longimanus</i>
Evolutionary change in metabolic rate of <i>Daphnia pulicaria</i> following invasion by the predator <i>Bythotrephes longimanus</i> Open
Metabolic rate is a trait that may evolve in response to the direct and indirect effects of predator‐induced mortality. Predators may indirectly alter selection by lowering prey densities and increasing resource availability or by intensif…
View article: Evolutionary change in metabolic rate of Daphnia pulicaria following invasion by the predator Bythotrephes longimanus
Evolutionary change in metabolic rate of Daphnia pulicaria following invasion by the predator Bythotrephes longimanus Open
Metabolic rate is a trait that may evolve in response to the direct and indirect effects of predator-induced mortality. Predators may indirectly alter selection by lowering prey densities and increasing resource availability or by intensif…
View article: Maternal dopamine exposure provides offspring starvation resistance in <i>Daphnia</i>
Maternal dopamine exposure provides offspring starvation resistance in <i>Daphnia</i> Open
The neurotransmitter dopamine has been shown to play an important role in modulating behavioral, morphological, and life history responses to food abundance. However, costs of expressing high dopamine levels remain poorly studied and are e…
View article: Evolution of<i>Daphnia</i>population dynamics following invasion by a non-native predator
Evolution of<i>Daphnia</i>population dynamics following invasion by a non-native predator Open
Predators are frequently observed to cause evolutionary responses in prey phenotypes, which may, in turn, translate into evolutionary shifts in prey population dynamics. Although a link between predation and population growth has been demo…
View article: Maternal dopamine exposure provides offspring starvation resistance in Daphnia
Maternal dopamine exposure provides offspring starvation resistance in Daphnia Open
The neurotransmitter dopamine has been shown to play an important role in modulating behavioural, morphological and life-history responses to food abundance. However, costs of expressing high dopamine levels remain poorly studied and are e…
View article: Dataset for dopamine manipulated daphnia
Dataset for dopamine manipulated daphnia Open
Data that shows effects of dopamine manipulation in daphnia
View article: Evolutionary change in metabolic rate of Daphnia pulicaria in response to the invasive predator Bythotrephes longimanus
Evolutionary change in metabolic rate of Daphnia pulicaria in response to the invasive predator Bythotrephes longimanus Open
Metabolic rate is a trait that can be hypothesized to evolve in response to a change in predation. In the current study, we address this question by utilising an invasive event by the predatory zooplankton Bythotrephes longimanus in Lake M…
View article: Host–parasite dynamics shaped by temperature and genotype: Quantifying the role of underlying vital rates
Host–parasite dynamics shaped by temperature and genotype: Quantifying the role of underlying vital rates Open
Global warming challenges the persistence of local populations, not only through heat‐induced stress, but also through indirect biotic changes. We study the interactive effects of temperature, competition and parasitism in the water flea D…
View article: Do genetic differences in growth thermal reaction norms maintain genetic variation in timing of diapause induction?
Do genetic differences in growth thermal reaction norms maintain genetic variation in timing of diapause induction? Open
An optimal timing for diapause induction through the sexual production of dormant propagules is expected in organisms with temporary populations. Yet, empirical studies often find high within‐population genetic variation in the sexual prod…