Jan Ohlberger

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Research topics:

Population and community dynamics: The dynamics of structured populations with respect to intra- and interspecific interactions such as predation, cannibalism, competition, and the effect of abiotic environmental factors, specifically temperature.

Life-history traits: Selective pressures shaping life-history evolution, for instance the evolutionary response of populations to increased mortality rates caused by exploitation or pathogens.

Ecological diversification: Ecological factors facilitating evolutionary divergence and the traits involved in adaptive diversification, particularly metabolic adaptation along environmental temperature gradients.

Metabolic scaling: Effects of temperature on the scaling of metabolic rate with body mass, and how fish species differ in metabolic scaling exponents.

Swimming energetics: The energetics of fish swimming, especially the effects of temperature, body size and morphology on standard and active metabolic rates.


Research projects: 

Assessment of the effects of oil exposure on the population dynamics and abundances of Atlantic cod and haddock using state-space models (current)

Modelling ecosystems under climate change: Windermere as a model lake system (completed)


Collaborations:

Applying a new demographic framework to understand and project consequences of climate change in size- and age-structured populations (starting 2013)

Risk, endogenous preferences, and investment behavior in Norwegian fisheries (starting 2013)


Homepage

Full list of publications

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Tags: Animal physiology, Evolutionary ecology, Food web dynamics, Life-history evolution, Local adaptation, Thermal physiology, Ecophysiology, Fish, Population dynamics, Predator-prey interactions

Publications

View all works in Cristin

  • Bellier, Edwige; Langangen, Øystein & Ohlberger, Jan Philipp (2017). Stage-dependent interactions of two harvested competitors.
  • Ohlberger, Jan (2014). Adaptive phenotypic diversification along a temperature-depth gradient – an evolutionary model based on laboratory and field data.
  • Vindenes, Yngvild; Edeline, Eric; Ohlberger, Jan; Langangen, Øystein; Winfield, Ian J. & Stenseth, Nils Christian [Show all 7 contributors for this article] (2013). Effects of climate warming on trait-based dynamics in a freshwater top predator.
  • Vindenes, Yngvild; Ohlberger, Jan; Langangen, Øystein & Winfield, Ian J. (2013). How does carrying capacity depend on temperature? A density dependent IPM for pike (Esox lucius).
  • Vindenes, Yngvild; Edeline, Eric; Ohlberger, Jan; Langangen, Øystein; Winfield, Ian J. & Stenseth, Nils Christian [Show all 7 contributors for this article] (2013). Trait-based dynamics of a top predator in freshwaters and effects of climate change.
  • Ohlberger, Jan (2013). Stochasticity and determinism: How density-independent and density-dependent processes affect population variability.
  • Ohlberger, Jan (2012). Ecological and evolutionary responses to size-selective mortality caused by a disease outbreak in Windermere perch.
  • Ohlberger, Jan (2012). Ecological and evolutionary responses to size-selective mortality – a disease outbreak in Windermere perch as a large-scale natural experiment.
  • Ohlberger, Jan (2012). Community-level consequences of cannibalism.
  • Ohlberger, Jan (2012). Biomass overcompensation revealed by long-term time series data from Windermere.
  • Ohlberger, Jan (2012). Cannibalism effects on species interactions and community structure.
  • Rouyer, Tristan Alexander; Sadykov, Alexander; Ohlberger, Jan & Stenseth, Nils Christian (2012). Does increasing mortality change the response of fish populations to environmental fluctuations? Ecology Letters. ISSN 1461-023X. 15(7), p. 658–665. doi: 10.1111/j.1461-0248.2012.01781.x
  • Ohlberger, Jan (2011). Stage-specific biomass overcompensation by juveniles in response to increased adult mortality.
  • Ohlberger, Jan; Edeline, Eric; Vøllestad, Leif Asbjørn; Stenseth, Nils Christian & Claessen, David (2011). PR: Temperature Driven Regime Shifts in the Dynamics of Size-Structured Populations. [Internet]. American Society of Naturalists.
  • Ohlberger, Jan (2010). Temperature-driven regime shifts in size-structured populations.
  • Ohlberger, Jan (2010). An empirically calibrated model of adaptive diversification along an environmental temperature‐depth gradient.
  • Ohlberger, Jan (2009). A physiological pathway in coregonid speciation.

View all works in Cristin

Published May 26, 2011 9:50 PM - Last modified Apr. 3, 2018 2:22 PM

Projects

Research groups