Per Juel Hansen

Per Juel Hansen

Professor

ORCID: 0000-0003-0228-9621

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  1. 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

  2. Published

    Mesodinium rubrum: the symbiosis that wasn’t

    Johnson, M. D., Lasek-Nesselquist , E., Moeller, H. V., Altenburger, A., Lundholm, Nina, Kim, M., Drumm, Kirstine, Moestrup, Øjvind & Hansen, Per Juel, 14 Feb 2017, In: Proceedings of the National Academy of Sciences of the United States of America. 114, 7, p. E1040-E1042 3 p.

    Research output: Contribution to journal › Comment/debate › Research › peer-review

  3. 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

  4. Published

    A comparison of photosynthesis measurements by O2 evolution, 14C assimilation and variable chlorophyll fluorescence during light acclimatization of the diatom Coscinodiscus granii

    Trampe, Erik, Hansen, Per Juel & Kühl, Michael, 2015, In: Algae. 30, 2, p. 103-119 17 p.

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

  5. 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 journal › Journal article › Research › peer-review

  6. 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/Report › Report › Research

  7. 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

  8. 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

  9. Published

    Accumulation, transformation and breakdown of DSP toxins from the toxic dinoflagellate Dinophysis acuta in blue mussels, Mytilus edulis

    Nielsen, L. T., Hansen, Per Juel, Krock, B. & Vismann, Bent, 2016, In: Toxicon. 117, p. 84-93 10 p.

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

  10. 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

  11. Published

    Allelopathic effects of Alexandrium tamarense on other algae: evidence from mixed growth experiments

    Tillmann, U. & Hansen, Per Juel, 2009, In: Aquatic Microbial Ecology. 57, 1, p. 101-112 12 p.

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

  12. 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

  13. Published

    Allelopathy in the prymnesiophyte Chrysochromulina polylepis: effect of cell concentration, growth phase and pH

    Schmidt, L. E. & Hansen, Per Juel, 2001, In: Marine Ecology - Progress Series. 216, p. 67-81

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

  14. 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 journal › Journal article › Research › peer-review

  15. Published

    Andaman Sea copepods: spatio-temporal variations in biomass and production, and role in the pelagic food web.

    Satapoomin, S., Nielsen, T. G. & Hansen, Per Juel, 2004, In: Marine Ecology - Progress Series. 274, p. 99-122

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

  16. Published

    Assemblages of fish larvae and mesozooplankton across the continental shelf and shelf slope of the Andaman Sea (NE Indian Ocean).

    Munk, P., Bjørnsen, P. K., Boonruang, P., Fryd, M., Hansen, Per Juel, Janekarn, V., Limtrakulvong, V., Nielsen, T. G., Hansen, O. S., Satapoomin, S., Sawangarreruks, S., Thomsen, H. A. & Østergaard, J. B., 2004, In: Marine Ecology - Progress Series. 274, p. 87-97

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

  17. Published

    Autotrophic and heterotrophic activity in Arctic first-year sea ice: seasonal study from Malene Bight, SW Greenland

    Søgaard, D. H., Kristensen, M., Rysgaard, S., Glud, R. N., Hansen, Per Juel & Hillingsøe, K. M., 2010, In: Marine Ecology - Progress Series. 419, p. 31-45 15 p.

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

  18. 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

  19. 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 journal › Journal article › Research › peer-review

  20. Published

    Chemical diversity, origin, and analysis of phycotoxins

    Rasmussen, S. A., Andersen, A. J. C., Andersen, N. G., Nielsen, K. F., Hansen, Per Juel & Larsen, T. O., 2016, In: Journal of Natural Products. 79, 3, p. 662-673 12 p.

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

  21. Published

    Chemodiversity of ladder-frame prymnesin polyethers in Prymnesium parvum

    Rasmussen, S. A., Meier, S., Andersen, N. G., Blossom, H. E., Duus, J. Ø., Nielsen, K. F., Hansen, Per Juel & Larsen, T. O., 2016, In: Journal of Natural Products. 79, 9, p. 2250–2256 7 p.

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

  22. 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

  23. 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 journal › Journal article › Research › peer-review

  24. 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

  25. Published

    Defining planktonic protist functional groups on mechanisms for energy and nutrient acquisition: incorporation of diverse mixotrophic strategies

    Mitra, A., Flynn, K. J., Tillmann, U., Raven, J. A., Caron, D., Stoecker, D. K., Hansen, P. J., Hallegraeff, G., Sanders, R., Wilken, S., Mcmanus, G., Johnson, M., Pitta, P., Våge, S., Berge, T., Calbet, A., Thingstad, F., Jeong, H. J., Burkholder, J., Glibert, P. M. & 2 others, Granéli, E. & Lundgren, V., 2016, In: Protist. 167, 2, p. 106-120 15 p.

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

  26. 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

  27. 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

  28. 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

  29. 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

  30. 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

  31. Published

    Development of a LC-MS/MS method for the quantification of goniodomins A and B and its application to Alexandrium pseudogonyaulax strains and plankton field samples of Danish coastal waters

    Krock, B., Tillmann, U., Wen, Y., Hansen, Per Juel, Larsen, T. O. & Andersen, A. J. C., 2018, In: Toxicon. 155, p. 51-60 10 p.

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

  32. 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 journal › Journal article › Research › peer-review

  33. 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

  34. Published

    Dinoflagellate/cyanobacteria consortia in the tropical Indian Ocean and the North-West Australian Sea

    Tarangkoon, W., Hansen, Gert & Hansen, Per Juel, 2007, In: Journal of Phycology. suppl 1, p. 38-38 1 p.

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

  35. Published

    Direct effects of pH and inorganic carbon on macroalgal photosynthesis and growth

    Middelboe, A. L. & Hansen, Per Juel, 2007, In: Marine Biology Research. 3, 3, p. 134-144

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

  36. 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

  37. Published

    DiskoBasis monitering

    Sigsgaard, Charlotte, Jørgensen, C. J., Christiansen, C. T., Hansen, Per Juel, Christoffersen, Kirsten Seestern, McConnell, A., Mølgaard, K. A., Kroon, Aart, Friborg, Thomas, Hansen, Birger & Elberling, Bo, 2017, Arctic Station Annual Report 2015. Kroon, A. & Sigsgaard, C. (eds.). København: Københavns Universitet, p. 7-13 7 p. (Annual Report).

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

  38. Published

    Distinctly different behavioral responses of a copepod, Temora longicornis, to different strains of toxic dinoflagellates, Alexandrium spp.

    Xu, J., Hansen, Per Juel, Nielsen, L. T., Krock, B., Tillmann, U. & Kiørboe, T., Feb 2017, In: Harmful Algae. 62, p. 1-9 9 p.

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

  39. 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

  40. 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 journal › Journal article › Research › peer-review

  41. Published

    Does irradiance influence the tolerance of marine phytoplankton to high pH?

    Nielsen, L. T., Lundholm, Nina & Hansen, Per Juel, 2007, In: Marine Biology Research. 3, 6, p. 446-453

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

  42. Published

    Does the red tide ciliate Mesodinium rubrum have replaceable symbionts

    Tarangkoon, W., Hansen, Per Juel, Moldrup, M., Garcia, L., Daugbjerg, Niels & Moestrup, Øjvind, 2009, In: Phycologia. 4, p. 40-40 1 p.

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

  43. 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 journal › Journal article › Research › peer-review

  44. 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

  45. Published

    Dynamics of sequestered cryptophyte nuclei in Mesodinium rubrum during starvation and refeeding

    Kim, M., Drumm, Kirstine, Daugbjerg, Niels & Hansen, Per Juel, 21 Mar 2017, In: Frontiers in Microbiology. 8, 14 p., 423.

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

  46. Published

    Dyreplankton i danske farvande (Tema-rapport DMU 28)

    Nielsen, T. G. & Hansen, Per Juel, 1999, National Environmental Research Institute. 64 p. (Tema-rapport).

    Research output: Book/Report › Report › Research

  47. 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 journal › Journal article › Research › peer-review

  48. Published

    Effect of acidification on an Arctic phytoplankton community from Disko Bay, West Greenland

    Thoisen, C., Riisgaard, K., Lundholm, Nina, Nielsen, T. G. & Hansen, Per Juel, 2015, In: Marine Ecology - Progress Series. 520, p. 21-34 14 p.

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

  49. 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

  50. Published

    Effect of pH on growth and domoic acid production by potentially toxic diatoms of the genera Pseudo-nitzschia and Nitzschia.

    Lundholm, Nina, Hansen, Per Juel & Kotaki, Y., 2004, In: Marine Ecology - Progress Series. 273, p. 1-15

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

  51. 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

  52. 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

  53. 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 journal › Journal article › Research › peer-review

  54. 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

  55. 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

  56. 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

  57. Published

    Effects of experimental seawater acidification on an estuarine plankton community

    Nielsen, L. T., Hallegraeff, G., Wright, S. & Hansen, Per Juel, 2012, In: Aquatic Microbial Ecology. 65, 3, p. 271-285 15 p.

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

  58. Published

    Effects of harmful algal blooms on fish: insights from Prymnesium parvum

    Svendsen, M. B. S., Andersen, N. G., Hansen, Per Juel & Steffensen, John Fleng, 2018, In: Fishes. 3, 1, 12 p., 11.

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

  59. Published

    Effects of high pH on a natural marine planktonic community

    Pedersen, M. F. & Hansen, Per Juel, 2003, In: Marine Ecology - Progress Series. 260, p. 19-31

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

  60. Published

    Effects of high pH on the growth and survival of six marine heterotrophic protists.

    Pedersen, M. F. & Hansen, Per Juel, 2003, In: Marine Ecology - Progress Series. 260, p. 33-41

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

  61. 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

  62. 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

  63. Published

    Effects of light and food availability on toxin production, growth and photosynthesis in Dinophysis acuminata

    Nielsen, L. T., Krock, B. & Hansen, Per Juel, 2012, In: Marine Ecology - Progress Series. 471, p. 37-50 14 p.

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

  64. 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

  65. Published

    Effects of nutrient limitation on food uptake in the toxic haptophyte Prymnesium parvum.

    Skovgaard, A., Legrand, C., Hansen, Per Juel & Granéli, E., 2003, In: Aquatic Microbial Ecology. 31, p. 259-265

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

  66. 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, Bent, 2020, In: P L o S One. 15, 3, 19 p., e0230176.

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

  67. Published

    Evolutionary transition towards permanent chloroplasts? - Division of kleptochloroplasts in starved cells of two species of Dinophysis (Dinophyceae).

    Rusterholz, P. M., Hansen, Per Juel & Daugbjerg, Niels, 11 May 2017, In: PLoS ONE. 12, 5, 16 p., e0177512.

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

  68. 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

  69. 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

  70. Published

    Feeding on copepod fecal pellets: a new trophic role of dinoflagellates as detritivores.

    Poulsen, L., Moldrup, M., Berge, T. & Hansen, Per Juel, 2011, In: Marine Ecology - Progress Series. 441, p. 65–78 14 p.

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

  71. 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 proceeding › Book chapter › Research

  72. Published

    Food uptake in the harmful alga Prymnesium parvum mediated by excreted toxins

    Skovgaard, A. & Hansen, Per Juel, 2003, In: Limnology and Oceanography. 48(3), p. 1161-1166

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

  73. Published

    Functional ecology of aquatic phagotrophic protists–concepts, limitations, and perspectives

    Weisse, T., Anderson, R., Arndt, H., Calbet, A., Hansen, Per Juel & Montagnes, D. J. S., 2016, In: European Journal of Protistology. 55, Part A, p. 50–74 25 p.

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

  74. 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 proceeding › Book chapter › 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

    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

  77. 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

  78. 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

  79. 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

  80. Published

    Growth and grazing responses of two chloroplast-retaining dinoflagellates:effect of irradiance and prey species

    Jakobsen, H. H., Hansen, Per Juel & Larsen, Jacob, 2000, In: Marine Ecology - Progress Series. 201, p. 121-128

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

  81. Published

    Growth limitation due to high pH and low inorganic carbon concentrations in temperate species of the dinoflagellate genus Ceratium

    Søderberg, L. M. & Hansen, Per Juel, 2007, In: Marine Ecology - Progress Series. 351, p. 103-112

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

  82. Published

    Growth limitation due to high pH and low inorganic carbon concentrations in temperate species of the dinoflagellate genus Ceratium

    Søderberg, L. M. & Hansen, Per Juel, 6 Dec 2007, In: Marine Ecology Progress Series. 351, p. 103-112 10 p.

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

  83. 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

  84. Published

    Growth limitation of three Arctic sea ice algal species: effects of salinity, pH, and inorganic carbon availability

    Sogaard, D. H., Hansen, Per Juel, Rysgaard, S. & Glud, R. N., 2011, In: Polar Biology. 34, 8, p. 1157-1165 9 p.

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

  85. 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 proceeding › Report chapter › Research › peer-review

  86. 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

  87. Published

    Havforskning fra Miljøstyrelsen, Giftige alger i danske farvande

    Larsen, J., Hansen, Per Juel & Ravn, H., 1993, Miljøstyrelsen. 130 p.

    Research output: Book/Report › Report › Research

  88. Published

    High pH and not allelopathy may be responsible for negative effects of Nodularia spumigena on other algae

    Møgelhøj, M. K., Hansen, Per Juel, Henriksen, P. & Lundholm, Nina, 2006, In: Aquatic Microbial Ecology. 43, p. 43-54

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

  89. Published

    High pH in shallow-water macroalgal habitats

    Middelboe, A. L. & Hansen, Per Juel, 2007, In: Marine Ecology - Progress Series. 338, p. 107-117

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

  90. Published

    High reproduction, but low biomass: mortality estimates of the copepod Acartia tonsa in a hyper-eutrophic estuary

    Tiselius, P., Borg, C. M. A., Hansen, B. W., Hansen, Per Juel, Nielsen, T. G. & Vismann, Bent, 2008, In: Aquatic Biology. 2, p. 93-103

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

  91. Published

    High resilience of two coastal plankton communities to 21st century seawater acidification: Evidence from microcosm studies.

    Nielsen, L. T., Jakobsen, H. H. & Hansen, Per Juel, 1 Oct 2010, In: Marine Biology Research. 6, 6, p. 542-555 14 p.

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

  92. Published

    High resilience of two coastal plankton communities to twenty-first century seawater acidification: Evidence from microcosm studies

    Nielsen, L. T., Jakobsen, H. H. & Hansen, Per Juel, 2010, In: Marine Biology Research. 6, 6, p. 542-555 14 p.

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

  93. Published

    Hydrography, bacteria and protist communities across the continental shelf and shelf slope of the Andaman Sea (NE Indian Ocean).

    Nielsen, T. G., Bjørnsen, P. K., Boonruang, P., Fryd, M., Hansen, Per Juel, Janekarn, V., Limtrakulvong, V., Munk, P., Hansen, O. S., Satapoomin, S., Sawangarreuks, S., Thomsen, H. A. & Østergaard, J. B., 2004, In: Marine Ecology - Progress Series. 274, p. 69-86

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

  94. 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

  95. Published

    Impact of elevated pH on succession in the Arctic spring bloom

    Riisgaard, K., Nielsen, T. G. & Hansen, Per Juel, 2015, In: Marine Ecology - Progress Series. 530, p. 63-75 13 p.

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

  96. 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 journal › Journal article › Research › peer-review

  97. 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 journal › Journal article › Research › peer-review

  98. Published

    Inorganic carbon acquisition in potentially toxic and non-toxic diatoms: the effect of pH-induced changes in the seawater carbonate chemistry.

    Trimborn, S., Lundholm, Nina, Thoms, S., Richter, K., Hansen, Per Juel, Krock, B. & Rost, B., 2008, In: Physiologia Plantarum : An International Journal for Plant Biology. 133, 1, p. 92-105 14 p.

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

  99. Published

    Inorganic carbon acquisition in red tide dinoflagellates

    Rost, B., Richter, K., Riebesell, U. & Hansen, Per Juel, 2006, In: Plant, Cell and Environment. 29, p. 810-822

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

  100. Published

    Interaction between Mesodinium rubrum and its prey: importance of prey concentration, irradiance and pH

    Moldrup, M. & Hansen, Per Juel, 2007, In: Marine Ecology - Progress Series. 338, p. 61-70 9 p.

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

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