Per Juel Hansen
Professor
Marine Biology
Strandpromenaden 5
3000 Helsingør
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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. 67-81Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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. 99-122Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 87-97Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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. 76Research output: Contribution to journal › Literature review › Research
- 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
- 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
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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
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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
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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
- 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. 201-204Research output: Contribution to journal › Journal article › Research › peer-review
- 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, , 2016, In: Protist. 167, 2, p. 106-120 15 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- Published
Det farveløse plankton - protozoer og dyreplankton
Hansen, Per Juel, 2006, Naturen i Danmark: HAVET. Fenchel, T. (ed.). Gyldendal, p. 93-125Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication
- 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
- Published
Det grønne plankton - planktonalgerne
Hansen, Per Juel, 2006, Naturen i Danmark: HAVET. Fenchel, T. (ed.). Gyldendal, p. 71-91Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication
- 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
- 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
- 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
- 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
- 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
- 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. 134-144Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 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
- 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. 409-416Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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. 446-453Research output: Contribution to journal › Journal article › Research › peer-review
- 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
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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
- 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
- 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
- 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
- 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
- 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
- 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. 279-288Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 1-15Research output: Contribution to journal › Journal article › Research › peer-review
ID: 10120
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The role of mixotrophic protists in the biological carbon pump
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Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus
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Functional ecology of aquatic phagotrophic protists–concepts, limitations, and perspectives
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