Jan Ohlberger

Postdoctoral Fellow
Image of Jan Ohlberger
Norwegian version of this page
Room 3327
Username
Visiting address Kristine Bonnevies hus Blindernveien 31 0371 OSLO
Postal address Postboks 1066 Blindern 0316 OSLO

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

  • Langangen, Øystein; Ohlberger, Jan; Stige, Leif C.; Durant, Joel M.; Ravagnan, Elisa; Stenseth, Nils C. & Hjermann, Dag Ø. (2017). Cascading effects of mass mortality events in Arctic marine communities. Global Change Biology.  ISSN 1354-1013.  23(1), s 283- 292 . doi: 10.1111/gcb.13344
  • Langangen, Øystein; Olsen, Erik Joel Steinar; Stige, Leif Christian; Ohlberger, Jan Philipp; Yaragina, Natalia A.; Vikebø, Frode Bendiksen; Bogstad, Bjarte; Stenseth, Nils Christian & Hjermann, Dag Øystein (2017). The effects of oil spills on marine fish: Implications of spatial variation in natural mortality. Marine Pollution Bulletin.  ISSN 0025-326X.  119(1), s 102- 109 . doi: 10.1016/j.marpolbul.2017.03.037 Full text in Research Archive.
  • Edeline, Eric; Groth, Andreas; Cazelles, Bernard; Claessen, David; Winfield, Ian J.; Ohlberger, Jan Philipp; Vøllestad, Leif Asbjørn; Stenseth, Nils Christian & Ghil, Michael (2016). Pathogens trigger top-down climate forcing on ecosystem dynamics. Oecologia.  ISSN 0029-8549.  181, s 519- 532 . doi: 10.1007/s00442-016-3575-8
  • Patin, Rémi; Rogers, Lauren & Ohlberger, Jan Philipp (2016). Using a state-space population model to detect age-dependent species interactions. Canadian Journal of Fisheries and Aquatic Sciences.  ISSN 0706-652X.  73(5), s 811- 818 . doi: 10.1139/cjfas-2015-0004
  • Ohlberger, Jan Philipp & Langangen, Øystein (2015). Population resilience to catastrophic mortality events during early life stages. Ecological Applications.  ISSN 1051-0761.  25(5), s 1348- 1356 . doi: 10.1890/14-1534.1.sm
  • Hidalgo, Manuel; Olsen, Esben Moland; Ohlberger, Jan; Saborido-Rey, Francisco; Murua, Hilario; Piñeiro, Carmen & Stenseth, Nils Christian (2014). Contrasting evolutionary demography induced by fishing: The role of adaptive phenotypic plasticity. Ecological Applications.  ISSN 1051-0761.  24(5), s 1101- 1114 . doi: 10.1890/12-1777.1
  • Ohlberger, Jan; Rogers, Lauren & Stenseth, Nils Christian (2014). Stochasticity and determinism: How density-independent and density-dependent processes affect population variability. PLoS ONE.  ISSN 1932-6203.  9(6) . doi: 10.1371/journal.pone.0098940 Full text in Research Archive.
  • Ohlberger, Jan; Thackeray, Stephen J.; Winfield, Ian J.; Maberly, Stephen C. & Vøllestad, Leif Asbjørn (2014). When phenology matters: Age-size truncation alters population response to trophic mismatch. Proceedings of the Royal Society of London. Biological Sciences.  ISSN 0962-8452.  281(1793) . doi: 10.1098/rspb.2014.0938
  • Vindenes, Yngvild; Edeline, Eric; Ohlberger, Jan; Langangen, Øystein; Winfield, Ian J.; Stenseth, Nils Christian & Vøllestad, Leif Asbjørn (2014). Effects of climate change on trait-based dynamics of a top predator in freshwater ecosystems. American Naturalist.  ISSN 0003-0147.  183(2), s 243- 256 . doi: 10.1086/674610 Full text in Research Archive.
  • Ohlberger, Jan (2013). Climate warming and ectotherm body size - from individual physiology to community ecology. Functional Ecology.  ISSN 0269-8463.  27(4), s 991- 1001 . doi: 10.1111/1365-2435.12098
  • Ohlberger, Jan; Brannström, Åke & Dieckmann, Ulf (2013). Adaptive Phenotypic Diversification along a Temperature-Depth Gradient. American Naturalist.  ISSN 0003-0147.  182(3), s 359- 373 . doi: 10.1086/671169 Full text in Research Archive.
  • Mehner, Thomas; Busch, Susan; Clemmesen, Catriona; Helland, Ingeborg Palm; Hölcker, Franz; Ohlberger, Jan & Peck, Myron A. (2012). Ecological commonalities among pelagic fishes: comparison of freshwater ciscoes and marine herring and sprat. Marine Biology.  ISSN 0025-3162.  159, s 2583- 2603 . doi: 10.1007/s00227-012-1922-9
  • Ohlberger, Jan; Langangen, Øystein; Stenseth, Nils Christian & Vøllestad, Leif Asbjørn (2012). Community-Level Consequences of Cannibalism. American Naturalist.  ISSN 0003-0147.  180(6), s 791- 801 . doi: 10.1086/668080 Full text in Research Archive.
  • Ohlberger, Jan; Mehner, Thomas; Staaks, Georg & Hölker, F. (2012). Intraspecific temperature dependence of the scaling of metabolic rate with body mass in fishes and its ecological implications. Oikos.  ISSN 0030-1299.  121, s 245- 251 . doi: 10.1111/j.1600-0706.2011.19882.x
  • Ohlberger, Jan; Villar, Jaime Otero; Edeline, Eric; Winfield, Ian J.; Stenseth, Nils Christian & Vøllestad, Leif Asbjørn (2012). Biotic and abiotic effects on cohort size distributions in fish. Oikos.  ISSN 0030-1299. . doi: 10.1111/j.1600-0706.2012.19858.x
  • Langangen, Øystein; Edeline, Eric; Ohlberger, Jan; Winfield, Ian J.; Fletcher, Janice M.; James, J. Ben; Stenseth, Nils Christian & Vøllestad, Leif Asbjørn (2011). Six decades of pike and perch population dynamics in Windermere. Fisheries Research.  ISSN 0165-7836.  109, s 131- 139 . doi: 10.1016/j.fishres.2011.01.029
  • Ohlberger, Jan; Edeline, Eric; Vøllestad, Leif Asbjørn; Stenseth, Nils Christian & Claessen, David (2011). Temperature-Driven Regime Shifts in the Dynamics of Size-Structured Populations. American Naturalist.  ISSN 0003-0147.  177(2), s 211- 223 . doi: 10.1086/657925
  • Ohlberger, Jan; Langangen, Øystein; Edeline, Eric; Claessen, David; Winfield, Ian J.; Stenseth, Nils Christian & Vøllestad, Leif Asbjørn (2011). Stage-specific biomass compensation by juveniles in response to increased adult mortality in a wild fish population. Ecology.  ISSN 0012-9658.  92(12), s 2175- 2182 . doi: 10.1890/11-0410.1
  • Ohlberger, Jan; Langangen, Øystein; Edeline, Eric; Olsen, Esben Moland; Winfield, Ian J.; Fletcher, Janice M.; James, J. Ben; Stenseth, Nils Christian & Vøllestad, Leif Asbjørn (2011). Pathogen-induced rapid evolution in a vertebrate life-history trait. Proceedings of the Royal Society of London. Biological Sciences.  ISSN 0962-8452.  278(1702), s 35- 41 . doi: 10.1098/rspb.2010.0960

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  • Bellier, Edwige; Langangen, Øystein; Ohlberger, Jan Philipp; Durant, Joel Marcel & Stenseth, Nils Christian (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.
  • Ohlberger, Jan (2013). Stochasticity and determinism: How density-independent and density-dependent processes affect population variability.
  • Vindenes, Yngvild; Edeline, Eric; Ohlberger, Jan; Langangen, Øystein; Winfield, Ian J.; Stenseth, Nils Christian & Vøllestad, Leif Asbjørn (2013). Effects of climate warming on trait-based dynamics in a freshwater top predator.
  • Vindenes, Yngvild; Edeline, Eric; Ohlberger, Jan; Langangen, Øystein; Winfield, Ian J.; Stenseth, Nils Christian & Vøllestad, Leif Asbjørn (2013). Trait-based dynamics of a top predator in freshwaters and effects of climate change.
  • 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).
  • 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.
  • Ohlberger, Jan (2012). Community-level consequences of cannibalism.
  • 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.
  • 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), s 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, 10. januar). PR: Temperature Driven Regime Shifts in the Dynamics of Size-Structured Populations. [Internett].  American Society of Naturalists.
  • Ohlberger, Jan (2010). An empirically calibrated model of adaptive diversification along an environmental temperature‐depth gradient.
  • Ohlberger, Jan (2010). Temperature-driven regime shifts in size-structured populations.
  • Ohlberger, Jan (2009). A physiological pathway in coregonid speciation.

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Published May 26, 2011 9:50 PM - Last modified Mar. 15, 2013 1:42 PM

Projects