John Fleng Steffensen

John Fleng Steffensen

Professor


  1. Published

    Oxygen conditions in fish schools

    Steffensen, John Fleng, 2005, In: Comparative Biochemistry and Physiology A. 3, p. S167

    Research output: Contribution to journalConference abstract in journalResearch

  2. Published

    Oxygen consumption in four species of teleosts from Greenland: no evidence of metabolic cold adaptation

    Steffensen, John Fleng, Bushnell, P. G. & Schurmann, H., 1994, In: Polar Biology. 14, 1, p. 49-54

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Oxygen consumption of East Siberan cod: no support for the metabolic cod adaptation theory

    Steffensen, John Fleng, Jordan, A. D. & Jungersen, M., 2001, In: Journal of Fish Biology. 59, p. 818-823

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Oxygen consumption of East Siberian cod: no support for the metabolic cold adaptation theory

    Jordan, Anders Drud, Jungersen, M. & Steffensen, John Fleng, 2001, In: Journal of Fish Biology. 59, 4, p. 818-823

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Oxygen consumption of fish exposed to hypoxia: Are they all oxyregulators or are any oxyconformers?

    Steffensen, John Fleng, 2007, Fish Physiology, Toxicology, and Water Quality: Proceedings of the Ninth International Symposium, Capri, Italy, April 24-28, 2006. Brauner, C. J., Suvajdzic, K., Nilsson, G. & Randall, D. (eds.). Ecosystems Research Divison Athens, Georgia, p. 239-244

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

  6. Published

    Oxygen dynamics around buried lesser sandeels Ammodytes tobianus (Linnaeus 1785): mode of ventilation and oxygen requirements.

    Behrens, J. W., Stahl, H. J., Steffensen, John Fleng & Glud, R. N., 2007, In: Journal of Experimental Biology. 210, Pt 6, p. 1006-14 8 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Partition of aerobic and anaerobic swimming costs and their correlation to tail-beat frequency and burst activity in Sparus aurata

    Steffensen, John Fleng, 2012.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  8. Published

    Partition of aerobic and anaerobic swimming costs related to gait transitions in a labriform fish

    Svendsen, J. C., Tudorache, C., Jordan, A. D., Steffensen, John Fleng, Aarestrup, K. & Domenici, P., 2010.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  9. Published

    Partition of aerobic and anaerobic swimming costs related to gait transitions in a labriform swimmer

    Svendsen, J. C., Tudorache, C., Jordan, A. D., Steffensen, John Fleng, Aarestrup, K. & Domenici, P., 2010, In: Journal of Experimental Biology. 213, Pt 13, p. 2177-83 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Partitioning the metabolic scope: the importance of anaerobic metabolism and implications for the oxygen- and capacity-limited thermal tolerance (OCLTT) hypothesis

    Ejbye-Ernst, R., Michaelsen, T. Y., Tirsgård, B., Wilson, J. M., Jensen, L. F., Steffensen, John Fleng, Pertoldi, C., Aarestrup, K. & Svendsen, J. C., 2016, In: Conservation Physiology. 4, 1, 13 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Pectoral fin beat frequency predicts oxygen consumption during spontaneous activity in a labriform swimming fish (Embiotoca lateralis)

    Tudorache, C., Jordan, Anders Drud, Svendsen, J. C., Domenici, P., DeBoeck, G. & Steffensen, John Fleng, 2009, In: Environmental Biology of Fishes. 84, p. 121-127 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Phylogenetic position of the cryopelagic codfish genus Arctogadus Drjagin, 1932 based on partial mitochondrial cytochrome b sequences

    Møller, Peter Rask, Jordan, Anders Drud, Gravlund, P. & Steffensen, John Fleng, 2002, In: Polar Biology. 25, 5, p. 342-349

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Physiological effects of temperature on Greenland halibut Reinhardtius hippoglossoides shows high vulnerability of Arctic stenotherms to global warming

    Ruth, A., Svendsen, M. B. S., Nygaard, R., Christensen, E. A. F., Bushnell, P. G. & Steffensen, John Fleng, 2023, In: Journal of Fish Biology. 103, 3, p. 675-683 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    Physiological energetics may contribute to competitive exclusion in African killifish (Aphyosemion spp.).

    McKenzie, D. J., Svendsen, J. C., Steffensen, John Fleng & Agnese, J., 2009, In: Comparative Biochemistry and Physiology A. 2, Supplement 1, p. S150 1 p.

    Research output: Contribution to journalConference abstract in journalResearch

  15. Published

    Physiological mechanisms underlying individual variation in tolerance of food deprivation in juvenile European sea bass, Dicentrarchus labrax

    McKenzie, D. J., Vergnet, A., Chatain, B., Vandeputte, M., Desmarais, E., Steffensen, John Fleng & Guinand, B., 2014, In: Journal of Experimental Biology. 217, 18, p. 3283-3292 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

    Physiological traits of the Greenland shark Somniosus microcephalus obtained during the TUNU-Expeditions to Northeast Greenland

    Di Prisco, G., Ademollo, N., Ancora, S., Christiansen, J. S., Coppola, D., Corsolini, S., Ferrando, S., Ghigliotti, L., Giordano, D., Lynghammar, A., Nielsen, J., Pisano, E., Russo, R., Steffensen, John Fleng & Verde, C., 2021, Life in Extreme Environments: Insights in Biological Capability. Di Prisco, G., Edwards, H. G. M., Elster, J. & Huiskes, A. H. L. (eds.). Cambridge University Press, p. 11-41 (Ecological Reviews).

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  17. Published

    Physiology and behaviour of Atlantic cod (Gadus morhua) with different haemoglobin genotypes: the effect of hypoxia

    Steffensen, John Fleng, 2005, In: Comparative Biochemistry and Physiology A. 3, p. S99

    Research output: Contribution to journalConference abstract in journalResearch

  18. Published

    Plasma FITC-dextran exchange between the primary and secondary circulatory systems in the Atlantic cod, Gadus Morhua.

    Fischer, C. & Steffensen, John Fleng, 2008, In: Fish Physiology & Biochemistry. 34, 3, p. 245-9 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Plasma osmolality and oxygen consumption of perch Perca fluviatilis in response to different salinities and temperatures

    Christensen, E. A. F., Svendsen, M. B. S. & Steffensen, John Fleng, Mar 2017, In: Journal of Fish Biology. 90, 3, p. 819-833 15 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Polarfisks fysiologiske tilpasninger

    Jordan, Anders Drud & Steffensen, John Fleng, 2006, Arktisk Station 1906 - 2006.: Et centrum for forskning. 1. ed. Danmark: Forlaget Rhodos, p. 286-291.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterCommunication

  21. Published

    Pop Up Satellite Tags Impair Swimming Performance and Energetics of the European Eel (Anguilla anguilla)

    Methling, C., Tudorache, C., Skov, P. V. & Steffensen, John Fleng, 8 Jun 2011, In: P L o S One. 6, 6, p. e20797

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    Population ecology, growth, and physico-chemical habitat of anadromous European perch Perca fluviatilis

    Christensen, E. A. F., Svendsen, M. B. S. & Steffensen, John Fleng, 2021, In: Estuarine, Coastal and Shelf Science. 249, 8 p., 107091.

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Preferred temperature of juvenile Atlantic cod Gadus morhua with different haemoglobin genotypes at normoxia and moderate hypoxia.

    Petersen, M. F. & Steffensen, John Fleng, 2003, In: Journal of Experimental Biology. 206, Pt 2, p. 359-64 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Primary versus secondary drivers of foraging activity in sandeel schools (Ammodytes tobianus)

    Van Deurs, M. S. K., Behrens, J. W., Warnar, T. & Steffensen, John Fleng, 2011, In: Marine Biology. 158, 8, p. 1781-1789 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Prolonged SDA and reduced digestive efficiency under elevated CO2 may explain reduced growth in Atlantic cod (Gadus morhua)

    Tirsgård, B., Moran, D. & Steffensen, John Fleng, 2015, In: Aquatic Toxicology. 158, p. 171-180 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

ID: 2881