Aquatic ecology, animal physiology and evolutionary biology
I am currently working or have worked on the following topics (including selected publications):
Climate change impacts
Impacts of climate change on life-history traits, population and community dynamics.
Ohlberger et al. 2016. Population coherence and environmental impacts across spatial scales: a case study of Chinook salmon. Ecosphere 7(4):e01333.
Edeline et al. 2016. Pathogens trigger top‐down climate forcing on ecosystem dynamics. Oecologia. (10.1007/s00442-016-3575-8)
Vindenes et al. 2014. Effects of climate change on trait-based dynamics of a top predator in freshwater ecosystems. American Naturalist 183(2):243–256.
Ohlberger 2013. Climate warming and ectotherm body size – from individual physiology to community ecology. Functional Ecology 27:991-1001.
Ohlberger et al. 2011. Temperature driven regime shifts in the dynamics of size-structured populations. American Naturalist 177:211-223.
Population and community dynamics
The dynamics of structured populations, specifically the role of density- and size-dependent interactions within and between species.
Langangen et al. 2016. Cascading effects of mass mortality events in Arctic marine communities. Global Change Biology. (10.1111/gcb.13344)
Patin et al. 2016. Using a state-space population model to detect age-dependent species interactions. Canadian Journal of Fisheries and Aquatic Sciences 73: 1–8.
Ohlberger J., and Ø. Langangen 2015. Population resilience to catastrophic mortality events during early life-stages. Ecological Applications, 25(5): 1348–1356.
Ohlberger et al. 2014. Stochasticity and determinism: How density-independent and density-dependent processes affect population variability. PLoS ONE 9(6):e98940.
Ohlberger et al. 2012. Community-level consequences of cannibalism. American Naturalist 180(6):791-801.
Consequences of changes in age-size structure for population dynamics and life-history.
Ohlberger et al. 2014. When phenology matters: Age-size truncation alters population response to trophic mismatch. Proceedings of the Royal Society B 281(1793):20140938.
Hidalgo et al. 2014. Contrasting evolutionary demography induced by fishing: the role of adaptive phenotypic plasticity. Ecological Applications 24(5):1101–1114.
Rouyer et al. 2012. Does increasing mortality change the response of fish populations to environmental fluctuations? Ecology Letters 15: 658–665.
Ohlberger et al. 2011. Pathogen-induced rapid evolution in a vertebrate life-history trait. Proceedings of the Royal Society B - Biological Sciences 278:35-41.
Ecological factors facilitating evolutionary divergence and traits involved in adaptive diversification.
Ohlberger et al. 2013. Adaptive phenotypic diversification along a temperature-depth gradient. American Naturalist 182(3):359-373.
Ohlberger et al. 2008. Temperature-related physiological adaptations promote ecological divergence in a sympatric species pair of temperate freshwater fish, Coregonus spp. Functional Ecology 22:501-508.
Ohlberger et al. 2008. Physiological specialization by thermal adaptation drives ecological divergence in a sympatric fish species pair. Evolutionary Ecology Research 10: 1173-1185.
Swimming energetics and metabolic scaling
The energetics of fish swimming, effects of temperature and size on metabolic rate, and interspecific variation in metabolic scaling exponents.
Ohlberger et al. 2012. Intraspecific temperature dependence of the scaling of metabolic rate with body mass in fishes and its ecological implications. Oikos 121:245–251.
Ohlberger et al. 2007. Effects of temperature, swimming speed and body mass on standard and active metabolic rate in vendace (Coregonus albula). Journal of Comparative Physiology B 177:905-916.
Ohlberger et al. 2006. Swimming efficiency and the influence of morphology on swimming costs in fishes. Journal of Comparative Physiology B 176:17-25.
Ohlberger et al. 2005. Modelling energetic costs of fish swimming. Journal of Experimental Zoology 303A:657-664.