John Fleng Steffensen

John Fleng Steffensen

Professor

ORCID: 0000-0002-4477-8039

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  1. Published

    The Transition between Branchial Pumping and Ram Ventilation in Fishes: Energetic Consequences and Dependence on Water Oxygen Tension

    Steffensen, John Fleng, 1985, In: Journal of Experimental Biology. 114, p. 141-150

    Research output: Contribution to journal › Journal article › Research › peer-review

  2. Published

    Respirometry across the gait transition in a labriform swimmer (Embiotoca lateralis).

    Schaefer, J., Cannas, M. & Steffensen, John Fleng, 2002, In: Integrative and Comparative Biology. 6, p. 1307

    Research output: Contribution to journal › Conference abstract in journal › Research

  3. Published

    The Influence of Body Size on Behavioral Thermal Preference in Atlantic Cod (Gadus morhua): Larger Fish Favor Colder Waters

    Schakmann, M., Christensen, E. A. F., Steffensen, John Fleng & Svendsen, M. B. S., 2023, In: Fishes. 8, 12, 11 p., 596.

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Swimming in unsteady water flows: is turning in a changing flow an energetically expensive endeavor for fish?

    Schakmann, M., Steffensen, John Fleng, Bushnell, P. G. & Korsmeyer, K. E., 2020, In: The Journal of Experimental Biology. 223, 6, 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    Latency of mechanically stimulated escape responses in the Pacific spiny dogfish, Squalus suckleyi

    Schakmann, M., Becker, V., Søgaard, M., Johansen, J. L., Steffensen, John Fleng & Domenici, P., 2021, In: Journal of Experimental Biology. 224, 6 p., jeb230698.

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Lethal oxygen levels at different temperatures and the preferred temperature during hypoxia of the Atlantic cod Gadus morhua L.

    Schurmann, H. & Steffensen, John Fleng, 1992, In: Journal of Fish Biology. 41, 6, p. 927-934

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    The influence of Hypoxia on the Preferred Temperature of Rainbow Trout Oncorhynchus mykiss

    Schurmann, H., Steffensen, John Fleng & Lomholt, J. F., 1991, In: Journal of Experimental Biology. 157, p. 75-86

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Spontaneous swimming activity of Atlantic cod Gadus morhua exposed to graded hypoxia at three temperatures

    Schurmann, H. & Steffensen, John Fleng, 1994, In: Journal of Experimental Biology. 197, p. 129-142

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Effects of temperature, hypoxia and activity on the metabolism of juvenile Atlantic cod

    Schurmann, H. & Steffensen, John Fleng, 1997, In: Journal of Fish Biology. 50, p. 1166-1180

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. Published

    Fisk foretrækker lavere temperatur under iltsvind

    Schurmann, H. & Steffensen, John Fleng, 1991, In: Vand & Miljø. 9, p. 434-437

    Research output: Contribution to journal › Journal article › Communication

  11. Published

    Larval developmental rate, metabolic rate and future growth performance in Atlantic salmon

    Serrano, J. V., Aberg, M., Gjoen, H. M., Steffensen, John Fleng & Hyglund, E., 2009, In: Comparative Biochemistry and Physiology A. 2, Suppl. 1, p. S140

    Research output: Contribution to journal › Conference abstract in journal › Research

  12. Published

    Muscle dynamics in fish during steady swimming

    Shadwick, R., Steffensen, John Fleng, Katz, S. & Knower, T., 1998, In: Integrative and Comparative Biology. 38, 4, p. 755-770

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    Blood pressure in the Greenland shark as estimated from ventral aortic elasticity

    Shadwick, R. E., Bernal, D., Bushnell, P. G. & Steffensen, John Fleng, Oct 2018, In: Journal of Experimental Biology. 221, 19, p. 1-6 jeb186957.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    The angular position of a refuge affects escape responses in staghorn sculpin Leptocottus armatus

    Shi, X., Møller, J. S., Højgaard, J., Johansen, J. L., Steffensen, John Fleng, Liu, D. & Domenici, P., Jun 2017, In: Journal of Fish Biology. 90, 6, p. 2434-2442 9 p.

    Research output: Contribution to journal › Letter › Research › peer-review

  15. Published

    Effect of ammonia on weatherloach (Misgurnus anguillicaudatus) metabolism under aquatic and aerial conditions

    Silva, J. M., Coimbra, J., Steffensen, John Fleng & Wilson, J., 2008, In: Comparative Biochemistry and Physiology A. 150, 3, Supplement 1, p. S120 1 p., A6.21.

    Research output: Contribution to journal › Conference abstract in journal › Research

  16. Published

    Fiskenes sekundære cirkulationssystem

    Skov, P. V. & Steffensen, John Fleng, 2003, In: Naturens Verden. 10, p. 14-19

    Research output: Contribution to journal › Journal article › Communication

  17. Published

    The role of adrenaline as a modulator of cardiac performance in two Antarctic fishes

    Skov, P. V., Bushnell, P. G., Tirsgaard, B. & Steffensen, John Fleng, 2009, In: Polar Biology. 32, 2, p. 215-223

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. Published

    Suckling behaviour in a viviparous teleost: role of the post-ovulatory follicle in matemal-embryonic exchange

    Skov, P. V., Sørensen, T. & Steffensen, John Fleng, 2008, In: Comparative Biochemistry and Physiology A. 150, 3, Supplement, p. S122 1 p., A6.27.

    Research output: Contribution to journal › Conference abstract in journal › Research

  19. Published

    Vascular arrangement and ultrastructure of the European eelpout Zoarces viviparus ovary: implications for maternal-embryonic exchange.

    Skov, P. V., Sørensen, T. F., Ramløv, H. & Steffensen, John Fleng, 2007, In: Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology. 290, 12, p. 1500-7 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    The role of adrenaline as a modulator of cardiac performance in three Notothenioid fishes

    Skov, P. V., Bushnell, P., Tirsgaard, B. & Steffensen, John Fleng, 2008, In: Comparative Biochemistry and Physiology A. 150, 3, Supplement, p. S97-S98 2 p., A5.3.

    Research output: Contribution to journal › Conference abstract in journal › Research

  21. Published

    Embryonic suckling and maternal specializations in the live-bearing teleost Zoarces viviparus

    Skov, P. V., Steffensen, John Fleng, Sorensen, T. F. & Qvortrup, Klaus, 15 Nov 2010, In: Journal of Experimental Marine Biology and Ecology. 395, 1-2, p. 120-127 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    The blood volumes of the primary and secondary circulatory system in the Atlantic cod, Gadus morhua L., using plasma bound Evans Blue and compartmental analysis.

    Skov, P. V. & Steffensen, John Fleng, 2003, In: Journal of Experimental Biology. 206, p. 591-599 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Effect of closed v. intermittent-flow respirometry on hypoxia tolerance in the shiner perch Cymatogaster aggregata

    Snyder, S., Nadler, L. E., Bayley, J. S., Svendsen, M. B. S., Johansen, J. L., Domenici, P. & Steffensen, John Fleng, 2016, In: Journal of Fish Biology. 88, 1, p. 252-264 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Swimming performance, venous oxygen tension and cardiac performance of coronary-ligated rainbow trout, Oncorhynchus mykiss, exposed to progressive hypoxia.

    Steffensen, John Fleng & Farrell, A. P., 1998, In: Comparative Biochemistry and Physiology A. 119, 2, p. 585-92 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. Published

    Effect of burst swimming and adrenaline infusion on O2 consumption and CO2 excretion in rainbow trout, Salmo gairdneri.

    Steffensen, John Fleng, Tufts, B. L. & Randall, D. J., 1987, In: Journal of Experimental Biology. 131, p. 427-34 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

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