Per Juel Hansen
Professor
Marine Biology
Strandpromenaden 5
3000 Helsingør
- 2024
- 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
- 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
- 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 journal › Journal article › Research › peer-review
- 2023
- 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
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
- 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
- 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 journal › Journal article › Research › peer-review
- 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 journal › Journal article › Research › peer-review
- 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
- Published
The Mixoplankton Database (MDB): Diversity of photo‐phago‐trophic plankton in form, function, and distribution across the global ocean
Mitra, A., Caron, D. A., Faure, E., Flynn, K. J., Leles, S. G., Hansen, Per Juel, McManus, G. B., Not, F., Rosario Gomes, H. D., Santoferrara, L. F., Stoecker, D. K. & Tillmann, U., 2023, In: Journal of Eukaryotic Microbiology. 70, 4, 25 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The combined effect of pH and dissolved inorganic carbon concentrations on the physiology of plastidic ciliate Mesodinium rubrum and its cryptophyte prey
Yde Eriksen, C. S., Desmaret Walli, M., Van de Waal, D. B., Helmsing, N. R., Dahl, E. O., Sørensen, Helle & Hansen, Per Juel, 2023, In: Harmful Algae. 129, 11 p., 102509.Research output: Contribution to journal › Journal article › Research › peer-review
- 2022
- 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
- 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
- Published
Predator Field and Colony Morphology Determine the Defensive Benefit of Colony Formation in Marine Phytoplankton
Ryderheim, F., Hansen, Per Juel & Kiørboe, T., 2022, In: Frontiers in Marine Science. 9, 10 p., 829419.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The coupling between irradiance, growth, photosynthesis and prymnesin cell quota and production in two strains of the bloom-forming haptophyte, Prymnesium parvum
Medic, Nikola, Varga, E., van der Waal, D. B., Larsen, T. O. & Hansen, Per Juel, 2022, In: Harmful Algae. 112, 8 p., 102173.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 2021
- 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
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
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
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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- Published
Retention of Prey Genetic Material by the Kleptoplastidic Ciliate Strombidium cf. basimorphum
Maselli, Maira, Anestis, K., Klemm, K., Hansen, Per Juel & John, U., 2021, In: Frontiers in Microbiology. 12, 8 p., 694508.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 2020
- 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
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
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
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
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
- 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
- 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
- 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
- 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
- Published
Tang
Larsen, J. G. & Hansen, Per Juel, 2020, Natur og Museum. Hansen, M. DD. & Bøgh, L. (eds.). 3 ed. Aarhus: Naturhistorisk Museum, Vol. 59. 39 p. (Natur og Museum).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication
- 2019
- 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
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
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
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
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, , 2019, In: Journal of Plankton Research. 41, 4, p. 375-391 17 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 199-210Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
- 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
- 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
- Published
Sampling bias misrepresents the biogeographical significance of constitutive mixotrophs across global oceans
Leles, S., Mitra, A., Flynn, K. J., Tillmann, U., Stoecker, D., Jeong, H. J., Burkholder, J., Hansen, Per Juel, Caron, D. A., Glibert, P. M., Hallegraeff, G., Raven, J. A., Sanders, R. W. & Zubkov, M., 2019, In: Global Ecology and Biogeography. 28, 4, p. 418–428 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 2018
- 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
- 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
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
- 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
- 2017
- 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
- Published
Oceanic protists with different forms of acquired phototrophy display contrasting biogeographies and abundance
Leles, S., Mitra, A., Flynn, K. J., Stoecker, D. K., Hansen, Per Juel, Calbet, A., McManus, G. B., Sanders, R. W., Caron, D. A., Not, F., Hallegraeff, G. M., Pitta, P., Raven, J. A., Johnson, M. D., Glibert, P. M. & Våge, S., 16 Aug 2017, In: Proceedings of the Royal Society B: Biological Sciences. 284, 1860, 6 p., 20170664.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 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
- Published
Trophic cascades of bottom-up and top-down forcing on nutrients and plankton in the Kattegat, evaluated by modelling
Petersen, M. E., Maar, M., Larsen, J., Møller, E. F. & Hansen, Per Juel, May 2017, In: Journal of Marine Systems. 169, p. 25-39 15 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Karmitoxin: an amine containing polyhydroxy-polyene toxin from the marine dinoflagellate Karlodinium armiger
Rasmussen, S. A., Binzer, S. B., Hoeck, C., Meier, S., Soman de Medeiros, L., Andersen, N. G., Place, A., Nielsen, K. F., Hansen, Per Juel & Larsen, T. O., 5 Apr 2017, In: Journal of Natural Products. 80, 5, p. 1287−1293 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
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
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
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
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
- Published
Mixotrophy in the marine plankton
Stoecker, D. K., Hansen, Per Juel, Caron, D. & Mitra, A., Jan 2017, In: Annual Review of Marine Science. 9, p. 311–335 25 p.Research output: Contribution to journal › Review › 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 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
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
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
- 2016
- 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
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
- 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
- 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
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
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
- Published
Mass entrapment and lysis of Mesodinium rubrum cells in mucus threads observed in cultures with Dinophysis
Ojamäe, K., Hansen, Per Juel & Lips, I., 2016, In: Harmful Algae. 55, p. 77-84 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Metabolic and physiological changes in Prymnesium parvum when grown under, and grazing on prey of, variable nitrogen: phosphorus stoichiometry
Lundgren, V. M., Glibert, P. M., Graneli, E., Vidyarathna, N. K., Fiori, E., Ou, L., Flynn, K. J., Mitra, A., Stoecker, D. K. & Hansen, Per Juel, 2016, In: Harmful Algae. 55, p. 1-12 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 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
- 2015
- 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
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
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
- 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
- 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
- Published
Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus
Pančić, M., Hansen, Per Juel, Tammilehto, A. & Lundholm, Nina, 2015, In: Biogeosciences. 12, p. 4235-4244 10 p., 12.Research output: Contribution to journal › Journal article › Research › peer-review
- 2014
- 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
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
- Published
The dinoflagellates Pfiesteria shumwayae and Luciella masanensis cause fish kills in recirculation fish farms in Denmark
Moestrup, Øjvind, Hansen, Gert, Daugbjerg, Niels, Lundholm, Nina, Overton, J., Vestergård, M., Steenfeldt, S. J., Calado, A. J. & Hansen, Per Juel, 2014, In: Harmful Algae. 32, p. 33-39 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The role of mixotrophic protists in the biological carbon pump
Mitra, A., Flynn, K. J., Burkholder, J. M., Berge, T., Calbet, A., Raven, J. A., Graneli, E., Glibert, P. M., Hansen, Per Juel, Stoecker, D. K., Thingstad, F., Tillmann, U., Våge, S. & Zubkov, M. V., 2014, In: Biogeosciences. 11, p. 995-1005 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2013
- 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
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
- Published
Loss of phototaxis and degeneration of an eyespot in long-term algal cultures: evidence from ultrastructure and behaviour in the dinoflagellate Kryptoperidinium foliaceum
Moldrup, M., Moestrup, Øjvind & Hansen, Per Juel, 2013, In: Journal of Eukaryotic Microbiology. 60, 4, p. 327–334 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- Published
Production and excretion of okadaic acid, pectenotoxin-2 and a novel dinophysistoxin from the DSP-causing marine dinoflagellate Dinophysis acuta – effects of light, food availability and growth phase
Nielsen, L. T., Krock, B. & Hansen, Per Juel, 2013, In: Harmful Algae. 23, p. 34-45 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 2012
- 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
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
- 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
- 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
- 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
- Published
Studies on the genus Mesodinium I: ultrastructure and description of Mesodinium chamaeleon n.sp., a benthic marine species with green and red chloroplasts
Moestrup, Øjvind, Garcia-Cuetos, L., Hansen, Per Juel & Fenchel, Tom, 2012, In: Journal of Eukaryotic Microbiology. 59, 1, p. 20-39 20 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- Published
The fish-killing dictyochophyte Pseudochattonella farcimen
Jakobsen, R. K., Hansen, Per Juel, Daugbjerg, Niels & Andersen, N. G., 2012, In: Harmful Algae. 18, p. 84-95 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 2011
- 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
- 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
- Published
Prey selection, ingestion and growth responses of the common marine ciliate Mesodinium pulex in the light and in the dark
Tarangkoon, W. & Hansen, Per Juel, 2011, In: Aquatic Microbial Ecology. 62, 1, p. 25-38 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 2010
- 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
- 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
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
- 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
- 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
- Published
Spatial distribution of symbiont-bearing dinoflagellates in the Indian Ocean in relation to oceanographic regimes
Tarangkoon, W., Hansen, Gert & Hansen, Per Juel, 2010, In: Aquatic Microbial Ecology. 58, 2, p. 197-213 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 2009
- Published
Role of food uptake for photosynthesis, growth and survival of the mixotrophic dinoflagellate Dinophysis acuminata
Riisgaard, K. & Hansen, Per Juel, 17 Apr 2009, In: Marine Ecology - Progress Series. 381, p. 51-62 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
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
- 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
- 2008
- 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. 289-299Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 93-103Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- Published
Struktur og funktion af plankton fødekæden i det Indiske Ocean fra Cape Town til Broome iAustralien. Dansk Ekspeditionsfond 2008
Nielsen, T. G., Visser, A., Jonasdottir, S., Friis Møller, E., Andersen, M., Larsen, L., Søborg, B., Satapoomin, S., Jaspers, C., Markager, S., Middelboe, M., Martinsen, W., Berendt, A., Hansen, O. S., Hansen, P. J., Woraporn, T., Daugbjerg, N., Hansen, G., Hastrup Jensen, M., Jakobsen, H. H. & 4 others, , 2008.Research output: Contribution to conference › Paper › Research › peer-review
- 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
- 2007
- 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
- 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
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
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. 103-112Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 63-71Research output: Contribution to journal › Journal article › Research › peer-review
- Published
High pH in shallow-water macroalgal habitats
Middelboe, A. L. & Hansen, Per Juel, 2007, In: Marine Ecology - Progress Series. 338, p. 107-117Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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
- 2006
- 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
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
- 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 - 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
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
- Published
Exploring strategies for nanoflagellates living in a 'wet desert'
Boenigk, J., Pfandl, K. & Hansen, Per Juel, 2006, In: Aquatic Microbial Ecology. 44, p. 71-83Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 43-54Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 810-822Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Motile behaviour of the bloom-forming ciliate Mesodinium rubrum
Fenchel, Tom & Hansen, Per Juel, 2006, In: Marine Biology Research. 2, 1, p. 33-40Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 55-62Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 169-177Research output: Contribution to journal › Journal article › Research › peer-review
- 2005
- 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
- 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. 1543-1551Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 513-530Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Lack of allelopathic effects of the domoic acid-producing marine diatom Pseudo-nitzschia multiseries
Lundholm, Nina, Hansen, Per Juel & Kotaki, Y., 2005, In: Marine Ecology - Progress Series. 288, p. 21-33Research output: Contribution to journal › Journal article › Research › peer-review
- 2004
- 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
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
- 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. 79-87Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 69-86Research output: Contribution to journal › Journal article › Research › peer-review
- 2003
- 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. 19-31Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 33-41Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 259-265Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 1161-1166Research output: Contribution to journal › Journal article › Research › peer-review
- 2002
- 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
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. 975-983Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Toxin-mediated feeding in the harmful alga Prymnesium parvum
Skovgaard, A. & Hansen, Per Juel, 2002.Research output: Contribution to conference › Conference abstract for conference › Research
- 2001
- 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
- 2000
- 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
- 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. 121-128Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Physiology of the mixotrophic dinoflagellate Fragilidium subglobosum. I. Effects of phagotrophy and irradiance on photosynthesis and carbon content
Skovgaard, A., Hansen, Per Juel & Stoecker, D. K., 2000, In: Marine Ecology - Progress Series. 201, p. 129-136Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 137-146Research output: Contribution to journal › Journal article › Research › peer-review
- 1999
- 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
- 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
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. 225-228Research output: Contribution to journal › Journal article › Research
- 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. 328-389Research output: Contribution to journal › Journal article › Research › peer-review
- 1998
- 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. 453-473Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Phagotropic Mechanisms and Prey Selection in Mixotropic Phytoflagellates
Hansen, Per Juel, 1998, In: NATO ASI Series. G 41, p. 527-537Research output: Contribution to journal › Journal article › Research › peer-review
- 1997
- 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
- 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. 187-196Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 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. 75-86Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 687-704Research output: Contribution to journal › Journal article › Research › peer-review
- 1995
- 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
Giftige alger og algeblomstringer i danske farvande
Hansen, Per Juel, 1995, In: Naturligvis. 1995, p. 22-24Research output: Contribution to journal › Journal article › Research
- 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. 65-72Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 45-100Research output: Contribution to journal › Journal article › Research › peer-review
- 1994
- Published
Opblomstring af stilkalger i Storebælt
Hansen, Per Juel, Nielsen, T. G. & Kaas, H., 1994, In: Vand og Jord. 1. årg., nr. 2, p. 8-13Research output: Contribution to journal › Journal article › Research
- 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. 395-403Research output: Contribution to journal › Journal article › Research › peer-review
- 1993
- 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
- 1992
- 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. 327-334Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 597-603Research output: Contribution to journal › Journal article › Research › peer-review
- 1991
- 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
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. 145-288Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 253-61Research output: Contribution to journal › Journal article › Research › peer-review
- 1989
- 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. 105-116Research output: Contribution to journal › Journal article › Research › peer-review
- 1988
- Published
On the occurrence of the potentially toxic dinoflagellates Alexandrium tamarense (=Gonyaulax excavata) and Alexandrium ostenfeldii in Danish and Faroese waters
Moestrup, Ø. & Hansen, Per Juel, 1988, In: Marine Biology Research. 28, p. 195-213Research 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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211
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Functional ecology of aquatic phagotrophic protists–concepts, limitations, and perspectives
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