Research Output per year
Personal profile
Curriculum
See personal home page: www.marbio.sdu.dk
Education: M.Sc. (1976), Ph.D. (1979) and D.Sc. (1982) from University of Copenhagen.
Positions held: 1977-1983: Experimental Zoophysiologist, Marine Pollution Laboratory, National Agency of Environmental Protection, Charlottenlund, Denmark. 1983-2008: Associate Professor, Institute of Biology, University of Southern Denmark. 1997-2000: Guest Professor, Kristineberg Marine Research Station (Royal Swedish Academy of Sciences). 2008-present: Professor, Institute of Biology, University of Southern Denmark.
Research: My research has mainly contributed to filter feeding, bioenergetics and fluid mechanical analysis of filter-pumps in marine invertebrates. Key words: filter-feeding in marine invertebrates; bioenergetics (food-uptake, assimilation, respiration, energy budgets, growth, costs of growth, growth efficiency); biological filter-pumps; biomixing; fluid mechanics; population grazing impact; particle capture mechanisms; benthic-pelagic coupling; biological structure and nutrient dynamics; grazing impact of benthic filter feeders; implications of density driven currents for interaction between jellyfish and zooplankton. Several research sojourns, among them: Skidaway (USA), Woods Hole (USA), University of Wales (U.K.), Kristineberg Marine Research Station (Sweden).
Editorial boards:
(1) Contributing/Review Editor (since 1985) for the journal Marine Ecology Progress Series (MEPS)
(2) Co-editor (since 1995) for the Journal of Sea Research
(3) Advisory board (1996-2005) of the journal of North Atlantic marine science Sarsia
(4) Editor (since 2000) of MEPS Discussion Forum 2 (web debate on the peer-review system
(5) Editorial Board Member (since 2007) of the Journal of Cell and Animal Biology
(6) Editorial Board Member (since 2007) of the Open Oceanography Journal
(7) Editorial Board Member (since 2007) of the Open Oceanography Reviews
(8) Editorial Board Member (since 2008) of Journal of Marine Biology
(9) Editorial Board Member (since 2009) of the journal Advanced Studies in Biology
(10) Editorial Board Member (since 2011) of the Open Journal of Marine Science
(11) Expert on Cnidaria and Ctenophora (since 2010) for The Great Danish Encyclopaedia (Den Store Danske Encyklopædi)
Memberships: Member of the Danish Academy of Sciences (DNA); American Society of Limnology and Oceanography (ASLO); Society for Experimental Biology (SEB). Member of the steering commitee for the Biodiversity Research Programme, the Research Council of Norway (Sept 2004 - Dec 2007). Member of the Nordic Marine Academy (NMA, key supervisor Jan 2005).
Miscellaneous: In 1990, I established the small Fjord Biological Laboratory in Kerteminde which in 1997 became a part of the new Marine Biological Research Centre where I am now Manager. I have ssupervised some 40 candidate (M.Sc.) research-projects, and supervised or co-supervised 7 Ph.D. projects; organized a number of international Ph.D. courses. I have received substantial support from the Danish National Research Council, private funds, and from a number of major grants from national research agencies, and EU research programmes.
Publications: Total number of publications (1977-2011): about 183 titles
Research areas
See personal homepage: www.marbio.sdu.dk
Research: Considering the dominant role of the phytoplankton in the primary production in the sea, it is understandable that filter feeding - or suspension feeding - is of widespread occurrence and filter feeders are found in almost all animal classes represented in the sea. Filter-feeding animals are necessary links between the suspended phytoplankton and higher trophic levels in the marine food chains. A large number of filter-feeding animals like bivalves, polychaetes, ascidians, bryozoans, and sponges graze on the phytoplankton in near-bottom water, and particular in shallow coastal waters and fjords they may exert a pronounced grazing impact which may keep the water clear (but not clean) in eutrophicated areas.
My research deals with a number of related topics: bioenergetics and energy budgets, functional response, filter-pumps and energetic cost of filter-feeding, adaptation to environment, water pumping and particle retention efficiency, particle capture mechanisms, switching between deposit and filter-feeding, grazing impact of benthic filter-feeders, and predation impact of jellyfish. Further, plankton dynamics and environmental assessment, mussels as pollution indicators and the importance of filter-feeding bivalves for the uptake of pollutants in the marine grazing food chain form part of my research profile.
Key words: filter-feeding in marine invertebrates; bioenergetics (food-uptake, assimilation, respiration, energy budgets, growth, costs of growth, growth efficiency); biological filter-pumps; biomixing; fluid mechanics; population grazing impact; particle capture mechanisms; benthic-pelagic coupling; biological structure and nutrient dynamics; grazing impact of benthic filter feeders; implications of density driven currents for interaction between jellyfish and zooplankton.
Research information
See personal homepage: www.marbio.sdu.dk
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Research Output 1977 2019
Exhalant jet speed of single-osculum explants of the demosponge Halichondria panicea and basic properties of the sponge-pump
Goldstein, J., Riisgård, H. U. & Larsen, P. S., Feb 2019, In : Journal of Experimental Marine Biology and Ecology. 511, p. 82-90Research output: Contribution to journal › Journal article › Research › peer-review
Hydrodynamics of the leucon sponge pump
Asadzadeh, S. S., Larsen, P. S., Riisgård, H. U. & Walther, J. H., Jan 2019, In : Journal of the Royal Society Interface. 16, 150, 20180630.Research output: Contribution to journal › Journal article › Research › peer-review
Seasonal changes in bacteria and phytoplankton biomass control the condition index of the demosponge Halichondria panicea in temperate Danish waters
Lüskow, F., Riisgård, H. U., Solovyeva, V. & Brewer, J. R., 3. Jan 2019, In : Marine Ecology Progress Series. 608, p. 119-132Research output: Contribution to journal › Journal article › Research › peer-review
Seasonality in lipid content of the demosponges Halichondria panicea and H. bowerbanki at two study sites in temperate Danish waters
Lüskow, F., Kløve-Mogensen, K., Tophøj, J., Pedersen, L. H., Riisgård, H. U. & Eriksen, N. T., 1. Jun 2019, In : Frontiers in Marine Science. 6, 7 p., 328.Research output: Contribution to journal › Journal article › Research › peer-review
Allgemine Ökologie: Einführung in aktuelle Fragen der Ökologie für Studierende
Research output: Book/anthology/thesis/report › Book › Education › peer-review
Activities 2009 2017
- 7 Talks and presentations in private or public companies
Smurt ind i olie - fugle må aflives efter olieforurening
Hans Ulrik Riisgård (Other)Activity: Talks and presentations › Talks and presentations in private or public companies
The invasive ctenophore Mnemiopsis leidyi in Limfjorden (Denmark): mini-status for the period 2007 to 2011
Hans Ulrik Riisgård (Lecturer)Activity: Talks and presentations › Talks and presentations in private or public companies
Fisk og gopler i Limfjorden
Hans Ulrik Riisgård (Lecturer)Activity: Talks and presentations › Talks and presentations in private or public companies
Living filters in the sea - about animals in a thin soup of plankton algae
Hans Ulrik Riisgård (Lecturer)Activity: Talks and presentations › Talks and presentations in private or public companies
Miljøproblemer og gopler i Limfjorden: Limfjorden lige nu og i fremtiden
Hans Ulrik Riisgård (Lecturer)Activity: Talks and presentations › Talks and presentations in private or public companies
Projects 2014 2020
Uddannelses- og Forskningsministeriet - FNU - Water processing and bio-mechanical characterization of filter-feeding jellyfish
01/07/2014 → 30/06/2017
Project: Research
Uddannelses- og Forskningsministeriet - FNU - Evolutionary and ecological success of sponges - the world's simplest animals
01/09/2018 → 31/08/2020
Project: Research
Press / Media
Havnefront til salg: Professoren og havhaverne skal også flyttes
11/08/2019
1 Media contribution
Press/Media: Press / Media
Havnefront til salg: Professoren og havhaverne skal også flyttes
07/08/2019
1 Media contribution
Press/Media: Press / Media
Nordre Havnekaj til salg: Hav-professoren skal flytte efter 28 års forskning
04/08/2019
1 Media contribution
Press/Media: Press / Media
Goplerne, der dræber, er vendt tilbage til det østlige Østersøen
13/11/2018
1 Media contribution
Press/Media: Press / Media