Per Juel Hansen

Per Juel Hansen

Professor

ORCID: 0000-0003-0228-9621

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  1. Published

    Dimorphism in cryptophytes - The case of Teleaulax amphioxeia/Plagioselmis prolonga and its ecological implications

    Altenburger, A., Blossom, H. E., Garcia-Cuetos, L., Jakobsen, H. H., Carstensen, J., Lundholm, Nina, Hansen, Per Juel, Moestrup, Øjvind & Haraguchi, L., 2020, In: Science Advances. 6, 37, 8 p., eabb1611.

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

  2. Published

    Limits to the cellular control of sequestered cryptophyte prey in the marine ciliate Mesodinium rubrum: [incl. correction]

    Altenburger, A., Cai, H., Li, Q., Drumm, Kirstine, Kim, M., Zhu, Y., Garcia-Cuetos, L., Zhan, X., Hansen, Per Juel, John, U., Li, S. & Lundholm, Nina, 2021, In: The ISME Journal. 15, 4, p. 1056-1072 17 p.

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

  3. Published

    HPLC-HRMS quantification of the ichthyotoxin karmitoxin from Karlodinium armiger

    Andersen, A. J. C., de Medeiros, L. S., Binzer, S. B., Rasmussen, S. A., Hansen, Per Juel, Nielsen, K. F., Jørgensen, K. & Larsen, T. O., Sep 2017, In: Marine Drugs. 15, 9, 13 p., 278.

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

  4. Published

    Dynamic cluster analysis: an unbiased method for identifying A + 2 element containing compounds in liquid chromatographic high-resolution time-of-flight mass spectrometric data

    Andersen, A. J. C., Hansen, Per Juel, Jørgensen, K. & Nielsen, K. F., 2016, In: Analytical Chemistry. 88 , 24, p. 12461–12469 9 p.

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

  5. 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

  6. Published

    Ichthyotoxicity of the microalga Pseudochattonella farcimen under laboratory and field conditions in Danish waters

    Andersen, N. G., Hansen, Per Juel, Engell-Sørensen, K., Nørremark, L. H., Andersen, P., Lorenzen, E. & Lorenzen, N., 2015, In: Diseases of Aquatic Organisms. 116, 3, p. 165-172 8 p.

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

  7. Published

    Mixotrophy in chlorophytes and haptophytes: effect of irradiance, macronutrient, micronutrient and vitamin limitation

    Anderson, R., Charvet, S. & Hansen, Per Juel, 2018, In: Frontiers in Microbiology. 9, 13 p., 1704.

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

  8. Published

    Meteorological conditions induce strong shifts in mixotrophic and heterotrophic flagellate bacterivory over small spatio-temporal scales

    Anderson, R. & Hansen, Per Juel, 2020, In: Limnology and Oceanography. 65, 6, p. 1189–1199 11 p.

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

  9. Published

    Mixotrophic phytoflagellate bacterivory field measurements strongly biased by standard approaches: a case study

    Anderson, R., Jürgens, K. & Hansen, Per Juel, 26 Jul 2017, In: Frontiers in Microbiology. 8, 12 p., 1398.

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

  10. 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

  11. Published

    Effects of dietary fatty acids on the reproductive success of the calanoid copepod Temora longicornis (vol 146, pg 513, 2005)

    Arendt, K., Jonasdottir, S. H., Hansen, Per Juel & Gartner, S., 2006, In: Marine Biology.

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

  12. Published

    Effects of diatary fatty acids on the reproductive success of the calanoid copepod Temora longicornis

    Arendt, K. E., Jónasdóttir, S. H., Hansen, Per Juel & Gartner, S., 2005, In: Marine Biology. 146, 3, p. 513-530

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

  13. Published

    Marine microalgae attack and feed on metazoans

    Berge, T., Poulsen, L. K., Moldrup, M., Daugbjerg, Niels & Hansen, Per Juel, 2012, In: I S M E Journal. 6, p. 1926-1936 11 p.

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

  14. 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

  15. Published

    Isolation and cultivation of microalgae select for low growth rate and tolerance to high pH

    Berge, T., Daugbjerg, Niels & Hansen, Per Juel, 2012, In: Harmful Algae. 20, p. 101-110 10 p.

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

  16. 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

  17. Published

    Modelling succession of key resource harvesting traits of mixotrophic plankton populations

    Berge, T., Chakraborty, S., Hansen, Per Juel & Andersen, K. H., 15 Jan 2017, In: The ISME Journal. 11, p. 212–223 12 p.

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

  18. Published

    Effects of lowered pH on marine phytoplankton growth rates.

    Berge, T., Daugbjerg, Niels, Andersen, B. B. & Hansen, Per Juel, 2010, In: Marine Ecology - Progress Series. 416, p. 79-91 13 p.

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

  19. 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

  20. Published

    Multiple ocean stressors: a scientific summary for policy makers

    Beusen, A., Boyd, P. W., Breitburg, D., Comeau, S., Hansen, Per Juel, Isensee, K., Kudela, R. M., Lundholm, Nina, Otto, S., Schwing, F. & Tilbrook, B., 2022, Unesco. 22 p. (IOC Information Series, Vol. 1404).

    Research output: Book/Report › Report › Research › peer-review

  21. 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

  22. Published

    Karmitoxin production by Karlodinium armiger and the effects of K. armiger and karmitoxin towards fish

    Binzer, S. B., Varga, E., Andersen, A. J. C., Svenssen, D. K., de Medeiros, L. S., Rasmussen, S. A., Larsen, T. O. & Hansen, Per Juel, 2020, In: Harmful Algae. 99, 13 p., 101905.

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

  23. Published

    A-, B- and C-type prymnesins are clade specific compounds and chemotaxonomic markers in Prymnesium parvum

    Binzer, S. B., Svenssen, D. K., Daugbjerg, Niels, Alvez-de-Souza, C., Pinto, E., Hansen, Per Juel, Larsen, T. O. & Varga, E., 2019, In: Harmful Algae. 81, p. 10-17 8 p.

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

  24. 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

  25. 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

  26. 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

  27. Published

    Prymnesium parvum revisited: relationship between allelopathy, ichthyotoxicity, and chemical profiles in 5 strains

    Blossom, H. E., Rasmussen, S. A., Andersen, N. G., Larsen, T. O., Nielsen, K. F. & Hansen, Per Juel, 2014, In: Aquatic Toxicology. 157, p. 159-166 8 p.

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

  28. 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

  29. Published

    A search for mixotrophy and mucus trap production in Alexandrium spp. and the dynamics of mucus trap formation in Alexandrium pseudogonyaulax

    Blossom, H. E., Bædkel, T. D., Tillmann, U. & Hansen, Per Juel, 4 Apr 2017, In: Harmful Algae. 64, p. 51-62 12 p.

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

  30. Published

    Exploring strategies for nanoflagellates living in a 'wet desert'

    Boenigk, J., Pfandl, K. & Hansen, Per Juel, 2006, In: Aquatic Microbial Ecology. 44, p. 71-83

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

  31. Published

    Mixotrophic lifestyle of the ichthyotoxic haptophyte, Prymnesium parvum, offered different sources of phosphorus: [Inkl. Corrigendum]

    Boucher, C., Lacour, T., Julie, A., Damien, R., Hansen, Per Juel & Francis, M., 2023, In: Harmful Algae. 127, p. 1-10 10 p., 102483.

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

  32. 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

  33. Published

    Gill Transcriptomic Responses to Toxin-producing Alga Prymnesium parvum in Rainbow Trout

    Clinton, M., Krol, E., Sepúlveda, D., Andersen, N. R., Brierley, A. S., Ferrier, D. E. K., Hansen, Per Juel, Lorenzen, N. & Martin, S. A. M., 2021, In: Frontiers in Immunology. 12, 17 p., 794593.

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

  34. Published

    Novel type of eukaryotic endosymbiont in Amphisolenia bidentata identified using ribosomal gene sequence determinations

    Daugbjerg, Niels, Jensen, M. H. & Hansen, Per Juel, 2009, In: Phycologia. 4, p. 24-24 1 p.

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

  35. 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

  36. Published

    Physiological Responses of Mesodinium major to Irradiance, Prey Concentration and Prey Starvation

    Drumm, Kirstine, Norlin, A., Kim, M., Altenburger, A. & Hansen, Per Juel, 2021, In: Journal of Eukaryotic Microbiology. 68, 4, 13 p., e12854.

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

  37. Published

    Effects of irradiance and prey deprivation on growth, cell carbon and photosynthetic activity of the freshwater kleptoplastidic dinoflagellate Nusuttodinium (= Gymnodinium) aeruginosum (Dinophyceae)

    Drumm, Kirstine, Liebst-Olsen, M., Daugbjerg, Niels, Moestrup, Øjvind & Hansen, Per Juel, 1 Aug 2017, In: PLoS ONE. 12, 8, 13 p., e0181751.

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

  38. 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

  39. Published

    Microbial diversity and activity in a Danish fjord with anoxic deep water

    Fenchel, Tom, Bernard, C., Esteban, G., Finlay, B. J., Hansen, Per Juel & Iversen, N., 1995, In: Marine Biology Research. 43(1), p. 45-100

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

  40. Published

    Motile behaviour of the bloom-forming ciliate Mesodinium rubrum

    Fenchel, Tom & Hansen, Per Juel, 2006, In: Marine Biology Research. 2, 1, p. 33-40

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

  41. Published

    Development and validation of new methods for measuring predation rates in mixoplanktonic protists

    Ferreira, G. D., Calbet, A., Mansour, J. S., Not, F., Medic, Nikola, Hansen, Per Juel, Romano, F., Pitta, P., Flynn, K. J. & Mitra, A., 2021, Novel Approaches For Investigating Marine Planktonic Mixotrophy. Mitra, A., Flynn, K. J., Anestis, K., Mansour, J. S., Ferreira, G. D. & Calbet, A. (eds.). Zenodo, 69 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  42. Published

    Mixoplankton interferences in dilution grazing experiments

    Ferreira, G. D., Romano, F., Medic, Nikola, Pitta, P., Hansen, Per Juel, Flynn, K. J., Mitra, A. & Calbet, A., 2021, In: Scientific Reports. 11, 16 p., 23849.

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

  43. 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

  44. Published

    Mixotrophic protists and a new paradigm for marine ecology: where does plankton research go now?

    Flynn, K. J., Mitra, A., Anestis, K., Anschütz, A. A., Calbet, A., Ferreira, G. D., Gypens, N., Hansen, P. J., John, U., Martin, J. L., Mansour, J. S., Maselli, M., Medic, N., Norlin, A., Not, F., Pitta, P., Ramano, F., Saiz, E., Schneider, L. K., Stolte, W. & 1 others, Traboni, C., 2019, In: Journal of Plankton Research. 41, 4, p. 375-391 17 p.

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

  45. Published

    Misuse of the phytoplankton-zooplankton dichotomy: the need to assign organisms as mixotrophs within plankton functional types

    Flynn, K. J., Stoecker, D. K., Mitra, A., Raven, J. A., Glibert, P. M., Hansen, Per Juel, Granéli, E. & Burkholder, J. M., 2013, In: Journal of Plankton Research. 35, 1, p. 3-11 9 p.

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

  46. Published

    Cutting the canopy to defeat the “selfish gene”; conflicting selection pressures for the integration of phototrophy in mixotrophic protists

    Flynn, K. J. & Hansen, Per Juel, 2013, In: Protist. 164, 6, p. 811-823 13 p.

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

  47. Published

    Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession

    Flynn, K. J., Darren, C. R., Mitra, A., Heiner, F., Hansen, Per Juel, Glibert, P., Wheeler, G. L., Stoecker, D. K., Blackford, J. C. & Brownlee, C., 2015, In: Proceedings of the Royal Society B: Biological Sciences. 282, 1804, 6 p.

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

  48. 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

  49. 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

  50. 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

  51. 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

  52. Published

    Allelopathy in Harmful Algae: A Mechanism to Compete for Resources?

    Granéli, E. & Hansen, Per Juel, 2006, Ecology of Harmful Algae: Series: Ecological Studies Vol. 189.. 189 ed. Heidelberg: Springer, p. 189-202 (Ecological Studies, Vol. 189).

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

  53. Published

    FISH-KILLING MARINE ALGAL BLOOMS: Causative Organisms, Ichthyotoxic Mechanisms, Impacts and Mitigation

    Hallegraeff, G., Anderson, D. M., Davidson, K., Gianella , F., Hansen, Per Juel, Iwataki, M., Larsen, T. O., Hegaret, H., Mardones, J. I., MacKenzie, L. & Rensel, J. E., 2023, Unesco. 96 p.

    Research output: Book/Report › Report › Research

  54. Published

    Effects of large nongrazable particles on clearance and swimming behaviour of zooplankton

    Hansen, B., Hansen, Per Juel & Nielsen, T. G., 1991, In: Journal of Experimental Marine Biology and Ecology. 152(2), p. 145-288

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

  55. 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

  56. Published

    In situ and experimental evidence for effects of elevated pH on protistan and metazoan grazers

    Hansen, B. W., Andersen, C. M. B., Hansen, Per Juel, Nielsen, T. G., Vismann, Bent & Tiselius, P., 2019, In: Journal of Plankton Research. 41, 3, p. 257–271 15 p.

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

  57. Published

    Effects of elevated pH on marine copepods in mass cultivation systems: practical implications

    Hansen, B. W., Hansen, Per Juel, Nielsen, T. G. & Meyer Jepsen, P., 2017, In: Journal of Plankton Research. 39 , 6, p. 984–993 10 p.

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

  58. Published

    Meeting report: Third European Congress of Protistology and 9th European Congress on Ciliate Biology, Helsingor, Denmark, July 26-30, 1999

    Hansen, Per Juel & Leick, V., 1 Jan 1999, In: Protist. 150, 3, p. 225-228 4 p.

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

  59. 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

  60. 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

  61. Published

    Green Noctiluca scintillans: a dinoflagellate with its own greenhouse.

    Hansen, Per Juel, Miranda, L. & Azanza, R., 2004, In: Marine Ecology - Progress Series. 275, p. 79-87

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

  62. Published

    Det farveløse plankton - protozoer og dyreplankton

    Hansen, Per Juel, 2006, Naturen i Danmark: HAVET. Fenchel, T. (ed.). Gyldendal, p. 93-125

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

  63. Published

    Book Reviews: Coastal Plankton - Photoguide for European Seas by Otto Larink & Wilfried Westheide

    Hansen, Per Juel, 2006, In: Marine Biology Research. 2, 1, p. 76

    Research output: Contribution to journal › Literature review › Research

  64. 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

  65. Published

    Opblomstring af stilkalger i Storebælt

    Hansen, Per Juel, Nielsen, T. G. & Kaas, H., 1994, In: Vand og Jord. 1. årg., nr. 2, p. 8-13

    Research output: Contribution to journal › Journal article › Research

  66. Published

    Mixotrophy among freshwater and marine protists

    Hansen, Per Juel, Anderson, R., Stoecker, D. K., Decele, J., Altenburger, A., Blossom, H. E., Drumm, Kirstine, Mitra, A. & Flynn, K. J., 2019, Encyclopedia of Microbiology. Schmidt, T. (ed.). 4 ed. Academic Press, p. 199-210

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  67. Published

    DINOPHYSIS - a planktonic dinoflagellate genus which can act both as a prey and a predator of a ciliate

    Hansen, Per Juel, 1991, In: Marine Ecology - Progress Series. 69 (1&2), p. 201-204

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

  68. 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

  69. Published

    Meeting Report: Third European Congress of Protistology and 9th European Congress on Ciliate Biology, Helsingør, Denmark, July 26-30

    Hansen, Per Juel, 1999, In: Protist. 150, p. 225-228

    Research output: Contribution to journal › Journal article › Research

  70. Published

    Effect of high pH on the growth and survival of marine phytoplankton: implications for species succession

    Hansen, Per Juel, 2002, In: Aquatic Microbial Ecology. 28, p. 279-288

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

  71. 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

  72. Published

    Phagotropic Mechanisms and Prey Selection in Mixotropic Phytoflagellates

    Hansen, Per Juel, 1998, In: NATO ASI Series. G 41, p. 527-537

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

  73. 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

  74. Published

    Interactions among marine protists: importance of mixotrophy, pH and toxins

    Hansen, Per Juel, 2007, In: Journal of Phycology. supl 1, p. 13-14 2 p.

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

  75. Published

    Giftige alger og algeblomstringer i danske farvande

    Hansen, Per Juel, 1995, In: Naturligvis. 1995, p. 22-24

    Research output: Contribution to journal › Journal article › Research

  76. Published

    Growth limitation in marine red-tide dinoflagellates: effects of pH versus inorganic carbon availability

    Hansen, Per Juel, Lundholm, Nina & Rost, B., 2007, In: Marine Ecology - Progress Series. 334, p. 63-71

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

  77. Published

    Interactions Between Toxic Marine Phytoplankton and Metazoan and Protistan Grazers

    Hansen, Per Juel, Tester, P. A. & Turner, J. T., 1998, In: NATO SGI. Ser. G 41, p. 453-473

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

  78. 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

  79. Published

    Mixotrophy in Dinoflagellates: Prey Selection, Physiology and Ecological Importance

    Hansen, Per Juel & Tillmann, U., 2020, Dinoflagellates: Classification, Evolution, Physiology and Ecological Significance. Durvasula, S. R. V. (ed.). Nova Science Publishers, p. 201-260 60 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  80. Published

    Direct evidence for symbiont sequestration in the marine red tide ciliate Mesodinium rubrum

    Hansen, Per Juel, Moldrup, M., Tarangkoon, W., Garcia, L. & Moestrup, Øjvind, 2012, In: Aquatic Microbial Ecology. 66, 1, p. 63-75 13 p.

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

  81. Published

    Mixotrophic feeding of Fragilidium subglobosum (Dinophyceae) on three species of Ceratium: Effects of prey concentration, prey species and light intensity

    Hansen, Per Juel & Nielsen, T. G., 1997, In: Marine Ecology - Progress Series. 147, p. 187-196

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

  82. Published

    Det farveløse plankton

    Hansen, Per Juel, 2017, Naturen i Danmark: Havet. Sand-Jensen, K. & Fenchel, T. (eds.). 2 ed. København: Gyldendal, p. 93-125 32 p.

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

  83. 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

  84. Published

    Marine Plankton: A Practical Guide to Ecology, Methodology, and Taxonomy. Edited by Claudia Castellani and Martin Edwards. Oxford and New York: Oxford University Press

    Hansen, Per Juel, 2020, In: The Quarterly Review of Biology. 95, 1, p. 76-77 1 p.

    Research output: Contribution to journal › Literature review › Communication

  85. Published

    Det grønne plankton

    Hansen, Per Juel, 2017, Naturen i Danmark: Havet. Sand-Jensen, K. & Fenchel, T. (eds.). 2 ed. Gyldendal, p. 71-91 21 p.

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

  86. Published

    Photoregulation in a kleptochloroplastidic Dinoflagellate, Dinophysis acuta

    Hansen, Per Juel, Ojamäe, K., Berge, T., Trampe, Erik, Nielsen, L. T., Lipps, I. & Kühl, Michael, 2016, In: Frontiers in Microbiology. 7, 11 p., 785.

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

  87. Published

    Acquired phototrophy in Mesodinium and Dinophysis – a review of cellular organization, prey selectivity, nutrient uptake and bioenergetics

    Hansen, Per Juel, Nielsen, L. T., Johnson, M., Berge, T. & Flynn, K. J., 2013, In: Harmful Algae. 28, p. 126-139 14 p.

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

  88. Published

    Det grønne plankton - planktonalgerne

    Hansen, Per Juel, 2006, Naturen i Danmark: HAVET. Fenchel, T. (ed.). Gyldendal, p. 71-91

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

  89. Published

    Distribution and growth of protists and mesozooplankton during a bloom of Chrysochromulina spp. (Prymnesiophyceae, Prymnesiales)

    Hansen, Per Juel, Nielsen, T. G. & Kaas, H., 1995, In: Phycologia. 34 (5), p. 409-416

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

  90. Published

    Phagotrophic Mechanisms and Prey Selection in Free-living Dinoflagellates

    Hansen, Per Juel & Calado, A. J., 1999, In: Journal of Eukaryotic Microbiology. 46(4), p. 328-389

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

  91. 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

  92. Published

    Growth and grazing responses of Chrysochromulina ericina (Prymnesiophyceae): the role of irradiance, prey concentration and pH

    Hansen, Per Juel & Hjorth, M., 2002, In: Marine Biology. 141, p. 975-983

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

  93. 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

  94. Published

    Growth and grazing response of a ciliate feeding on the red tide dinoflagellate Gyrodinium aureolum in monoculture and in mixture with a non-toxic alga

    Hansen, Per Juel, 1995, In: Marine Ecology - Progress Series. 121, p. 65-72

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

  95. Published

    Effect of turbulence on sedimentation and net population growth of the dinoflagellate Ceratium tripos and interactions with its predator, Fragilidium subglobosum

    Havskum, H., Hansen, Per Juel & Berdalet, E., 1 Jan 2005, In: Limnology and Oceanography. 50, 5, p. 1543-1551 9 p.

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

  96. Published

    Effect of turbulence on sedimentation and net population growth of the dinoflagellate Ceratium tripos and interactions with its predator, Fragilidium subglosum

    Havskum, H., Hansen, Per Juel & Berdalet, E., 2005, In: Limnology and Oceanography. 50(5), p. 1543-1551

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

  97. Published

    Net growth of the bloom-forming dinoflagellate Heterocapsa triquetra and pH: why turbulence matters.

    Havskum, H. & Hansen, Per Juel, 2006, In: Aquatic Microbial Ecology. 42, p. 55-62

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

  98. Published

    Metabolic Reliance on Photosynthesis Depends on Both Irradiance and Prey Availability in the Mixotrophic Ciliate, Strombidium cf. basimorphum

    Hughes, E. A., Maselli, Maira, Sørensen, Helle & Hansen, Per Juel, 2021, In: Frontiers in Microbiology. 12, 12 p., 642600.

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

  99. 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

  100. 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

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