Per Juel Hansen

Per Juel Hansen

Professor

ORCID: 0000-0003-0228-9621

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  1. Published

    Zooplankton grazing and growth: Scaling within the 2-2,000-μm body size range

    Hansen, Per Juel, Bjørnsen, P. K. & Hansen, B. W., 1 Jan 1997, In: Limnology and Oceanography. 42, 4, p. 687-704 18 p.

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

  2. Published

    Zooplanktion grazing and growth: Scaling within the 2-2,000-um body size range

    Hansen, Per Juel, Bjørnsen, P. K. & Hansen, B. W., 1997, In: Limnology and Oceanography. 42 (4), p. 687-704

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

  3. Published

    Using nuclear-encoded LSU and SSU rDNA sequences to identify the Eukaryotic Endosymbiont in Amphisolenia bidentata (Dinophyceae)

    Daugbjerg, Niels, Jensen, M. H. & Hansen, Per Juel, 2013, In: Protist. 164, 3, p. 411-422 12 p.

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

  4. Published

    Use of phytoplankton pigments in estimating food selection of three marine copepods

    Christensen, B., Jonasdottir, S., Henriksen, P. & Hansen, Per Juel, 2012, In: Journal of Plankton Research. 34, 2, p. 161-172 12 p.

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

  5. Published

    Trophic cascades of bottom-up and top-down forcing on nutrients and plankton in the Kattegat, evaluated by modelling

    Petersen, M. E., Maar, M., Larsen, J., Møller, E. F. & Hansen, Per Juel, May 2017, In: Journal of Marine Systems. 169, p. 25-39 15 p.

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

  6. Published

    Toxin-mediated feeding in the harmful alga Prymnesium parvum

    Skovgaard, A. & Hansen, Per Juel, 2002.

    Research output: Contribution to conference › Conference abstract for conference › Research

  7. Published

    Toxic mucus traps: a novel mechanism that mediates prey uptake in the mixotrophic dinoflagellate Alexandrium pseudogonyaulax

    Blossom, H. E., Daugbjerg, Niels & Hansen, Per Juel, 2012, In: Harmful Algae. 17, p. 40-53 14 p.

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

  8. Published

    The toxic dinoflagellate Dinophysis acuminata harbors permanent chloroplasts of cryptomomad prigin, not kleptochloroplasts

    Garcia, L., Moestrup, Øjvind, Hansen, Per Juel & Daugbjerg, Niels, 2010, In: Harmful Algae. 9, 1, p. 25-38 14 p.

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

  9. Published

    The strengths and weaknesses of Live Fluorescently Labelled Algae (LFLA) to estimate herbivory in protozooplankton and mixoplankton

    Ferreira, G. D., Figueira, J., Marques, S. C., Hansen, Per Juel & Calbet, A., 2022, In: Marine Environmental Research. 174, 12 p., 105558.

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

  10. Published

    The size ratio between planktonic predators and their prey

    Hansen, B., Bjørnsen, P. K. & Hansen, Per Juel, 1994, In: Limnology and Oceanography. 39 (2), p. 395-403

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

  11. Published

    The role of photosynthesis and food uptake for the growth of marine mixotrophic dinoflagellates

    Hansen, Per Juel, 2011, In: Journal of Eukaryotic Microbiology. 58, 3, p. 203-214 12 p.

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

  12. Published

    The role of mixotrophic protists in the biological carbon pump

    Mitra, A., Flynn, K. J., Burkholder, J. M., Berge, T., Calbet, A., Raven, J. A., Graneli, E., Glibert, P. M., Hansen, Per Juel, Stoecker, D. K., Thingstad, F., Tillmann, U., Våge, S. & Zubkov, M. V., 2014, In: Biogeosciences. 11, p. 995-1005 11 p.

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

  13. Published

    The red tide dinoflagellate Alexandrium tamarense: effects on behaviour and growth of a tintinnid ciliate

    Hansen, Per Juel, 1989, In: Marine Ecology - Progress Series. 53, p. 105-116

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

  14. Published

    The marine dinoflagellate Alexandrium ostenfeldii: paralytic shellfish toxin concentration, composition, and toxicity to a tintinnid ciliate

    Hansen, Per Juel, Cembella, A. D. & Moestrup, Øjvind, 1992, In: Journal of Phycology. 28, p. 597-603

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

  15. Published

    The loss of mixotrophy in Alexandrium pseudogonyaulax: Implications for trade-offs between toxicity, mucus trap production, and phagotrophy

    Blossom, H. E. & Hansen, Per Juel, 2021, In: Limnology and Oceanography. 66, 2, p. 528-542 15 p.

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

  16. Published

    The fish-killing dictyochophyte Pseudochattonella farcimen

    Jakobsen, R. K., Hansen, Per Juel, Daugbjerg, Niels & Andersen, N. G., 2012, In: Harmful Algae. 18, p. 84-95 12 p.

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

  17. Published

    The dinoflagellates Pfiesteria shumwayae and Luciella masanensis cause fish kills in recirculation fish farms in Denmark

    Moestrup, Øjvind, Hansen, Gert, Daugbjerg, Niels, Lundholm, Nina, Overton, J., Vestergård, M., Steenfeldt, S. J., Calado, A. J. & Hansen, Per Juel, 2014, In: Harmful Algae. 32, p. 33-39 7 p.

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

  18. Published

    The coupling between irradiance, growth, photosynthesis and prymnesin cell quota and production in two strains of the bloom-forming haptophyte, Prymnesium parvum

    Medic, Nikola, Varga, E., van der Waal, D. B., Larsen, T. O. & Hansen, Per Juel, 2022, In: Harmful Algae. 112, 8 p., 102173.

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

  19. Published

    The cost of toxicity in microalgae: direct evidence from the dinoflagellate Alexandrium

    Blossom, H. E., Markussen, Bo, Daugbjerg, Niels, Krock, B., Norlin, A. & Hansen, Per Juel, 2019, In: Frontiers in Microbiology. 10, 14 p., 1065.

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

  20. Published

    The combined effect of pH and dissolved inorganic carbon concentrations on the physiology of plastidic ciliate Mesodinium rubrum and its cryptophyte prey

    Yde Eriksen, C. S., Desmaret Walli, M., Van de Waal, D. B., Helmsing, N. R., Dahl, E. O., Sørensen, Helle & Hansen, Per Juel, 2023, In: Harmful Algae. 129, 11 p., 102509.

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

  21. Published

    The chloroplast of the DSP-producer Dinophysis, does it originate from Mesodinium, Teleaulax or elsewhere?

    Garcia, L., Hansen, Per Juel, Daugbjerg, Niels & Moestrup, Øjvind, 2008. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research

  22. Published

    The blue mussel Mytilus edulis is vulnerable to the toxic dinoflagellate Karlodinium armiger: adult filtration is inhibited and several life stages killed

    Binzer, S. B., Lundgren, R. B. C., Berge, T., Hansen, Per Juel & Vismann, Bent, Jun 2018, In: P L o S One. 13, 6, 16 p., e0199306.

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

  23. Published

    The bloom-forming ciliate Mesodinium rubrum harbours a single permanent endosymbiont

    Hansen, Per Juel & Fenchel, Tom, 2006, In: Marine Biology Research. 2, 3, p. 169-177

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

  24. Published

    The Mixoplankton Database (MDB): Diversity of photo‐phago‐trophic plankton in form, function, and distribution across the global ocean

    Mitra, A., Caron, D. A., Faure, E., Flynn, K. J., Leles, S. G., Hansen, Per Juel, McManus, G. B., Not, F., Rosario Gomes, H. D., Santoferrara, L. F., Stoecker, D. K. & Tillmann, U., 2023, In: Journal of Eukaryotic Microbiology. 70, 4, 25 p.

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

  25. Published

    Tang

    Larsen, J. G. & Hansen, Per Juel, 2020, Natur og Museum. Hansen, M. DD. & Bøgh, L. (eds.). 3 ed. Aarhus: Naturhistorisk Museum, Vol. 59. 39 p. (Natur og Museum).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  26. Published

    Sublethal concentrations of ichthyotoxic alga Prymnesium parvum affect rainbow trout susceptibility to viral haemorrhagic septicaemia virus

    Andersen, N. G., Lorenzen, E., Boutrup, T. S., Hansen, Per Juel & Lorenzen, N., 2016, In: Diseases of Aquatic Organisms. 117, p. 187-195 9 p.

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

  27. Published

    Studies on the genus Mesodinium II. ultrastructural and molecular investigations of five marine species help clarifying the taxonomy

    Garcia, L., Moestrup, Øjvind & Hansen, Per Juel, 2012, In: Journal of Eukaryotic Microbiology. 59, 4, p. 374-400 27 p.

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

  28. Published

    Studies on the genus Mesodinium I: ultrastructure and description of Mesodinium chamaeleon n.sp., a benthic marine species with green and red chloroplasts

    Moestrup, Øjvind, Garcia-Cuetos, L., Hansen, Per Juel & Fenchel, Tom, 2012, In: Journal of Eukaryotic Microbiology. 59, 1, p. 20-39 20 p.

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

  29. Published

    Struktur og funktion af plankton fødekæden i det Indiske Ocean fra Cape Town til Broome iAustralien. Dansk Ekspeditionsfond 2008

    Nielsen, T. G., Visser, A., Jonasdottir, S., Friis Møller, E., Andersen, M., Larsen, L., Søborg, B., Satapoomin, S., Jaspers, C., Markager, S., Middelboe, M., Martinsen, W., Berendt, A., Hansen, O. S., Hansen, P. J., Woraporn, T., Daugbjerg, N., Hansen, G., Hastrup Jensen, M., Jakobsen, H. H. & 4 others, Henriksen, P., Schlüter, L., Hilligsøe, K. M. & Olesen, Michael, 2008.

    Research output: Contribution to conference › Paper › Research › peer-review

  30. Published

    Stability of the intra- and extracellular toxins of Prymnesium parvum using a microalgal bioassay

    Blossom, H. E., Andersen, N. G., Rasmussen, S. A. & Hansen, Per Juel, 2014, In: Harmful Algae. 32, p. 11-21 11 p.

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

  31. Published

    Spatial distribution of symbiont-bearing dinoflagellates in the Indian Ocean in relation to oceanographic regimes

    Tarangkoon, W., Hansen, Gert & Hansen, Per Juel, 2010, In: Aquatic Microbial Ecology. 58, 2, p. 197-213 7 p.

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

  32. Published

    Sampling bias misrepresents the biogeographical significance of constitutive mixotrophs across global oceans

    Leles, S., Mitra, A., Flynn, K. J., Tillmann, U., Stoecker, D., Jeong, H. J., Burkholder, J., Hansen, Per Juel, Caron, D. A., Glibert, P. M., Hallegraeff, G., Raven, J. A., Sanders, R. W. & Zubkov, M., 2019, In: Global Ecology and Biogeography. 28, 4, p. 418–428 11 p.

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

  33. Published

    Role of the chloroplast in the predatory dinoflagellate Karlodinium armiger

    Berge, T. & Hansen, Per Juel, 2016, In: Marine Ecology - Progress Series. 549, p. 41–54 14 p.

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

  34. Published

    Role of food uptake for photosynthesis, growth and survival of the mixotrophic dinoflagellate Dinophysis acuminata

    Riisgaard, K. & Hansen, Per Juel, 17 Apr 2009, In: Marine Ecology - Progress Series. 381, p. 51-62 12 p.

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

  35. Published

    Retention of Prey Genetic Material by the Kleptoplastidic Ciliate Strombidium cf. basimorphum

    Maselli, Maira, Anestis, K., Klemm, K., Hansen, Per Juel & John, U., 2021, In: Frontiers in Microbiology. 12, 8 p., 694508.

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

  36. Published

    Respiratory Physiology of European Plaice (Pleuronectes platessa) Exposed to Prymnesium parvum

    Bergsson, H., Andersen, N. R., Svendsen, M. B. S., Hansen, Per Juel & Steffensen, John Fleng, 2019, In: Fishes. 4, 2, 13 p., 32.

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

  37. Published

    Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus

    Pančić, M., Hansen, Per Juel, Tammilehto, A. & Lundholm, Nina, 2015, In: Biogeosciences. 12, p. 4235-4244 10 p., 12.

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

  38. Published

    Quantitative importance and trophic role of heterotrophic dinoflagellates in a coastal pelagial food web

    Hansen, Per Juel, 1991, In: Marine Ecology - Progress Series. 73, p. 253-61

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

  39. Published

    Putative N2-fixing heterotrophic bacteria associated with dinoflagellate-Cyanobacteria consortia in the low-nitrogen Indian Ocean

    Farnelid, H., Tarangkoon, W., Hansen, Gert, Hansen, Per Juel & Riemann, Lasse, 2010, In: Aquatic Microbial Ecology. 61, 2, p. 105-117 12 p.

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

  40. Published

    Production and excretion of okadaic acid, pectenotoxin-2 and a novel dinophysistoxin from the DSP-causing marine dinoflagellate Dinophysis acuta – effects of light, food availability and growth phase

    Nielsen, L. T., Krock, B. & Hansen, Per Juel, 2013, In: Harmful Algae. 23, p. 34-45 12 p.

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

  41. Published

    Prey. size selection, feeding rates and growth dynamics of heterotrophic dinoflagellates with special emphasis on Gyrodinium spirale

    Hansen, Per Juel, 1992, In: Marine Biology. 114, p. 327-334

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

  42. Published

    Prey size spectrum and bioenergetics of the mixotrophic dinoflagellate Karlodinium armiger

    Berge, T., Hansen, Per Juel & Moestrup, Øjvind, 26 Mar 2008, In: Aquatic Microbial Ecology. 50, p. 289-299

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

  43. Published

    Prey size selection, grazing and growth response of the small heterotrophic dinoflagellate Gymnodinium sp. and the ciliate Balanion comatum - a comparatiteve study

    Jakobsen, H. H. & Hansen, Per Juel, 1997, In: Marine Ecology - Progress Series. 158, p. 75-86

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

  44. Published

    Prey size selection, grazing and growth response of the small heterotrophic dinoflagellate Gymnodinium sp. and the ciliate Balanion comatum - a comparative study

    Jakobsen, H. H. & Hansen, Per Juel, 1997, In: Marine Ecology Progress Series. 158, 1, p. 75-86 12 p.

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

  45. Published

    Prey selection, ingestion and growth responses of the common marine ciliate Mesodinium pulex in the light and in the dark

    Tarangkoon, W. & Hansen, Per Juel, 2011, In: Aquatic Microbial Ecology. 62, 1, p. 25-38 14 p.

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

  46. Published

    Predator Field and Colony Morphology Determine the Defensive Benefit of Colony Formation in Marine Phytoplankton

    Ryderheim, F., Hansen, Per Juel & Kiørboe, T., 2022, In: Frontiers in Marine Science. 9, 10 p., 829419.

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

  47. Published

    Polyketide synthase genes and molecular trade-offs in the ichthyotoxic species Prymnesium parvum

    Anestis, K., Kohli, G. S., Wohlrab, S., Varga, E., Larsen, T. O., Hansen, Per Juel & John, U., 2021, In: Science of the Total Environment. 795, 10 p., 148878.

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

  48. Published

    Plant are not animals and animals are not plants, right? Wrong! Tiny creatures in the ocean can be both at once

    Glibert, P. M., Mitra, A., Flynn, K. J., Hansen, Per Juel, Jeong, H. J. & Stoecker, D., 2019, In: Frontiers for Young Minds. 7, 9 p., 48.

    Research output: Contribution to journal › Comment/debate › Communication

  49. Published

    Physiology of the mixotrophic dinoflagellate Fragilidium subglosum. II. Effects of time scale and prey concentration on photosynthetic performance

    Hansen, Per Juel, Skovgaard, A., Glud, R. N. & Stoecker, D. K., 2000, In: Marine Ecology - Progress Series. 201, p. 137-146

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

  50. Published

    Physiology of the mixotrophic dinoflagellate Fragilidium subglobosum. II. Effects of time scale and prey concentration on photosynthetic performance

    Hansen, Per Juel, Skovgaard, A., Glud, R. N. & Stoecker, D. K., 9 Aug 2000, In: Marine Ecology Progress Series. 201, p. 137-146 10 p.

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

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