Per Juel Hansen
Professor
Marine Biology
Strandpromenaden 5
3000 Helsingør
- 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
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
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
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
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
- 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
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
- 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
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
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
- 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
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
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
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
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
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
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
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
- 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
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
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
- 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
- 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
- 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
- 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 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
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
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
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
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
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
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
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
- 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
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
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
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
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
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
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
- 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
- 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
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
- 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
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
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
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
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
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
ID: 10120
Most downloads
-
1696
downloads
The role of mixotrophic protists in the biological carbon pump
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
975
downloads
Resilience to temperature and pH changes in a future climate change scenario in six strains of the polar diatom Fragilariopsis cylindrus
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
211
downloads
Functional ecology of aquatic phagotrophic protists–concepts, limitations, and perspectives
Research output: Contribution to journal › Journal article › Research › peer-review
Published