Hans Ulrik Riisgård

Full Professor in Marine Biology, Ph.D. & D.Sc.

  • Campusvej 55

    5230 Odense M

    Denmark

1977 …2020
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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  

Fingerprint Dive into the research topics where Hans Ulrik Riisgård is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

  • 2 Similar Profiles
Mytilus edulis Agriculture & Biology
mussels Agriculture & Biology
Bivalvia Agriculture & Biology
bivalve Earth & Environmental Sciences
filter feeding Earth & Environmental Sciences
pumps Agriculture & Biology
Denmark Agriculture & Biology
mercury Agriculture & Biology

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

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. 82-90

Research output: Contribution to journalJournal articleResearchpeer-review

sponge
pumps
pump
explants
microscopes

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 journalJournal articleResearchpeer-review

Porifera
Hydrodynamics
Pumps
Flagella
Reticulum
sponge
phytoplankton
bacterium
biomass
bacteria
38 Downloads (Pure)

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 journalJournal articleResearchpeer-review

Open Access
File
Lipids
seasonality
lipid
lipid content
Phytoplankton

Allgemine Ökologie: Einführung in aktuelle Fragen der Ökologie für Studierende

Translated title of the contribution: General ecology: Introduction to current ecology issues for studentsRiisgård, H. U., 8. Aug 2018, 1. ed. Bookboon.com. 154 p.

Research output: Book/anthology/thesis/reportBookEducationpeer-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)
14. Feb 2017

Activity: Talks and presentationsTalks 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)
14. Sep 2012

Activity: Talks and presentationsTalks and presentations in private or public companies

Fisk og gopler i Limfjorden

Hans Ulrik Riisgård (Lecturer)
2012

Activity: Talks and presentationsTalks 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)
16. Mar 2011

Activity: Talks and presentationsTalks and presentations in private or public companies

Miljøproblemer og gopler i Limfjorden: Limfjorden lige nu og i fremtiden

Hans Ulrik Riisgård (Lecturer)
26. Nov 2010

Activity: Talks and presentationsTalks and presentations in private or public companies

Projects 2014 2020

Press / Media

Gopler, der dræber

Hans Ulrik Riisgård

14/07/2018

1 Media contribution

Press/Media: Press / Media