Per Juel Hansen

Per Juel Hansen

Professor


  1. 2024
  2. Published

    Cytotoxicity of Prymnesium parvum extracts and prymnesin analogs on epithelial fish gill cells RTgill‑W1 and the human colon cell line HCEC‑1CT

    Varga, E., Prause, H., Riepl, M., Hochmayr, N., Berk, D., Attakpah, E., Kiss, E., Medic, Nikola, Del Favero, G., Larsen, T. O., Hansen, Per Juel & Marko, D., 2024, In: Archives of Toxicology. 98, p. 999–1014 16 p.

    Research output: Contribution to journalJournal articlepeer-review

  3. Published

    Impact of salinity and temperature on the vital rates of co-occurring Calanus glacialis and C. finmarchicus from West Greenland

    Makri, M., Hansen, Per Juel & Gissel Nielsen, T., 2024, In: Marine Ecology - Progress Series. 729, p. 47-62 16 p.

    Research output: Contribution to journalJournal articlepeer-review

  4. Published

    Long-read genome sequencing provides novel insights into the harmful algal bloom species Prymnesium parvum

    Jian, J., Wu, Z., Silva-núñez, A., Li, X., Zheng, X., Luo, B., Liu, Y., Fang, X., Workman, C. T., Larsen, T. O., Hansen, Per Juel & Sonnenschein, E. C., 2024, In: Science of the Total Environment. 908, 168042.

    Research output: Contribution to journalJournal articlepeer-review

  5. 2023
  6. E-pub ahead of print

    Carbon and nitrogen uptake through photosynthesis and feeding by photosymbiotic Acantharia

    Mansour, J. S., Hansen, Per Juel, Leroux, C. & Not, F., 2023, (E-pub ahead of print) In: Open Research Europe.

    Research output: Contribution to journalJournal articlepeer-review

  7. Published

    Effects of Glacial Flour on Marine Micro-plankton: Evidences from Natural Communities of Greenlandic Fjords and Experimental Studies

    Maselli, Maira, Meire, L., Meire, P. & Hansen, Per Juel, 2023, In: Protist. 174, 1, 17 p., 125928.

    Research output: Contribution to journalJournal articlepeer-review

  8. 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/ReportReport

  9. Published

    Local adaptation through countergradient selection in northern populations of Skeletonema marinoi

    Sefbom, J., Kremp, A., Hansen, Per Juel, Johannesson, K., Godhe, A. & Rengefors, K., 2023, In: Evolutionary Applications. 16, 2, 10 p.

    Research output: Contribution to journalJournal articlepeer-review

  10. Published

    Microplastic pollution associated with reduced respiration in seagrass (Zostera marina L.) and associated epiphytes

    Molin, J. M., Groth-Andersen, W. E., Hansen, Per Juel, Kühl, Michael & Brodersen, Kasper Elgetti, 2023, In: Frontiers in Marine Science. 10, 14 p., 1216299.

    Research output: Contribution to journalJournal articlepeer-review

  11. 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 journalJournal articlepeer-review

  12. 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 journalJournal articlepeer-review

  13. 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 journalJournal articlepeer-review

  14. 2022
  15. Published

    Impacts of inorganic nutrients on the physiology of a mixoplanktonic ciliate and its cryptophyte prey

    Maselli, Maira, Van de Waal, D. B. & Hansen, Per Juel, 2022, In: Oecologia. 199, 1, p. 41-52 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  16. 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/ReportReportpeer-review

  17. 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 journalJournal articlepeer-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 journalJournal articlepeer-review

  19. 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 journalJournal articlepeer-review

  20. 2021
  21. Published

    A guide for field studies and environmental monitoring of mixoplankton populations

    Mitra, A. (ed.), Gypens, N. (ed.), Hansen, Per Juel (ed.) & Flynn, K. J. (ed.), 2021, Zenodo.

    Research output: Book/ReportReport

  22. Published

    An under‑ice bloom of mixotrophic haptophytes in low nutrient and freshwater‑influenced Arctic waters

    Søgaard, D. H., Sorrell, B. K., Sejr, M. K., Andersen, P., Rysgaard, S., Hansen, Per Juel, Skyttä, A., Lemcke, S. & Lund-Hansen, L. C., 2021, In: Scientific Reports. 11, 8 p., 11:2915.

    Research output: Contribution to journalJournal articlepeer-review

  23. 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 proceedingBook chapterResearchpeer-review

  24. Published

    Fjords and climate change

    Juul-Pedersen, T., Winding, M. H. S., Sejr, M. K. & Hansen, Per Juel, 2021, Greenland Ecosystem Monitoring Annual Report Cards 2020. Christensen, T. B., Arndal, M. F. & Topp-Jørgensen, E. (eds.). Aarhus University, DCE – Danish Centre for Environment and Energy, p. 8-9 2 p.

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

  25. Published

    GEM MarineBasis – Programme description

    Sejr, M. K., Winding, M. H. S., Juul-Pedersen, T., Hansen, Per Juel & Nielsen, T. G., 2021, Greenland Ecosystem Monitoring Annual Report Cards 2020. Christensen, T. R., Arndal, M. F. & Topp-Jørgensen, E. (eds.). Aarhus University, DCE – Danish Centre for Environment and Energy, p. 40-41 2 p.

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

  26. 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 journalJournal articlepeer-review

  27. Published

    HABs under global change: Experimental conditions and approaches

    van der Waal, D. B., Bach, L., Berdalet, E., Brandenburg, K. M., Suikkanen, S., Wohlrab, S., Hansen, Per Juel & Kremp, A., 2021, Guidelines for the study of climate change effects on HABs. Enevoldsen, H. & Sun, Y. (eds.). Unesco, p. 36-63 (IOC Manual and Guides, Vol. 88).

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

  28. 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 journalJournal articlepeer-review

  29. 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 journalJournal articlepeer-review

  30. 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 journalJournal articlepeer-review

  31. 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 journalJournal articlepeer-review

  32. 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 journalJournal articlepeer-review

  33. 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 journalJournal articlepeer-review

  34. 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 journalJournal articlepeer-review

  35. 2020
  36. Published

    A dataset on trophic modes of aquatic protists

    Schneider, L. K., Anestis, K., Mansour, J., Anschütz, A. A., Gypens, N., Hansen, Per Juel, John, U., Klemm, K., Martin, J. L., Medic, Nikola, Not, F. & Stolte, W., 2020, In: Biodiversity Data Journal. 8, 13 p., e56648.

    Research output: Contribution to journalJournal articlepeer-review

  37. 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 journalJournal articlepeer-review

  38. Published

    Dynamic CO2 and pH levels in coastal, estuarine, and inland waters: theoretical and observed effects on harmful algal blooms

    Raven, J. A., Gobler, C. J. & Hansen, Per Juel, 2020, In: Harmful Algae. 91, 13 p., 101594.

    Research output: Contribution to journalJournal articlepeer-review

  39. Published

    Ecophysiological traits of mixotrophic Strombidium spp.

    Maselli, Maira, Altenburger, A., Stoecker, D. K. & Hansen, Per Juel, 2020, In: Journal of Plankton Research. 42, 5, p. 485-496 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  40. Published

    Effects of the DSP-toxic dinoflagellate Dinophysis acuta on clearance and respiration rate of the blue mussel, Mytilus edulis

    Nielsen, P., Krock, B., Hansen, Per Juel & Vismann, B., 2020, In: P L o S One. 15, 3, 19 p., e0230176.

    Research output: Contribution to journalJournal articlepeer-review

  41. 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 journalJournal articlepeer-review

  42. 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 journalLiterature review

  43. 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 journalJournal articlepeer-review

  44. 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 proceedingBook chapterResearchpeer-review

  45. 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 proceedingBook chapterCommunication

  46. 2019
  47. 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, B. & Tiselius, P., 2019, In: Journal of Plankton Research. 41, 3, p. 257–271 15 p.

    Research output: Contribution to journalJournal articlepeer-review

  48. 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 journalJournal articlepeer-review

  49. Published

    Development of an indirect quantitation method to assess ichthyotoxic B-type prymnesins from Prymnesium parvum

    Svenssen, D. K., Binzer, S. B., Medic, Nikola, Hansen, Per Juel, Larsen, T. O. & Varga, E., 2019, In: Toxins. 11, 5, 15 p., 251.

    Research output: Contribution to journalJournal articlepeer-review

  50. Published

    Distributions of three Alexandrium species and their toxins across a salinity gradient suggest an increasing impact of GDA producing A. pseudogonyaulax in shallow brackish waters of Northern Europe

    Kremp, A., Hansen, Per Juel, Tillmann, U., Savela, H., Suikkanen, S., Voß, D., Barrera, F., Jakobsen, H. H. & Krock, B., 2019, In: Harmful Algae. 87, 14 p., 101622.

    Research output: Contribution to journalJournal articlepeer-review

  51. 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 journalJournal articlepeer-review

  52. 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 proceedingBook chapterResearchpeer-review

  53. 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 journalComment/debate

  54. Published

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

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

    Research output: Contribution to journalJournal articlepeer-review

  55. 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 journalJournal articlepeer-review

  56. 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 journalJournal articlepeer-review

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