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Dean Marianne Holmer

Contact information

University of Southern Denmark
Faculty of Science
Campusvej 55
5230 Odense M

Phone: +45 6011 2605

Research profile:


Marianne Holmer has a PhD in marine ecology from the Department of Biology, Odense University (1994). She has previously been employed as head of the Department of Biology (2010-2019), assistant and associate professor in the ecology group at the Department of Biology (1995-2010) and assistant professor at the Roskilde University (1994).

Executive training

Universities Denmark

  • Head of Department training programme (2010-2011)

Management positions and administrative tasks

  • Dean, Faculty of Science, SDU (2019- )
  • Member of the Executive Board, SDU (2019- )
  • Head of the Department of Biology, SDU  (2010-2019)
  • Organiser of the 20th Annual Meeting of Danish Marine Researchers, SDU (2019)
  • Co-organiser of the Blue Carbon Initiative Workshop, Copenhagen (2019)

Seats on boards

  • Chair of the board for Sct. Knuds Gymnasium (2019- )
  • Member of the committee for the Nordic Council Environment Prize (2019- )
  • Member of the board for Fjord&Bælt (2018- )
  • Deputy chair of the board for Givskud Zoo (2015- )

Steering committees

  • Steering committee for digitalisation, SDU (2019- )
  • Steering committee for strategic drone initiatives, SDU (2016-2018)

Select publications

Holmer M, Hasler-Sheetal H (2014). Sulfide intrusion in seagrasses assessed by stable sulfur isotopes – A synthesis of current results. Frontiers in Marine Sciences 27 November 2014. DOI: 10.3389/fmars.2014.00064

Petersen JK, Hasler B, Timmermann K,Nielsen P, Tørring DB, Larsen MM, Holmer M (2014). Mussels as a tool for mitigation of nutrients in the marine environment. Marine Pollution Bulletin. 82:137-143

Hasler-Sheetal H, Holmer M (2015).  Sulfide intrusion and detoxification in the seagrass Zostera marina. PloS One. DOI:10.1371/journal.pone.0129136

Hasler-Sheetal H, Fragner L, Holmer M, Weckwerth W (2015). Diurnal effects of anoxia on the metabolome of the seagrass Zostera marina. Metabolomics 1-11. DOI: 10.1007/s11306-015-0776-9

Castorani MCN, Glud RN, Hasler-Sheetal H, Holmer M (2015). Light indirectly mediates bivalve habitat modification and impacts on seagrass. Journal of Experimental Marine Biology and Ecology 472:41-53. DOI:10.1016/j.jembe.2015.07.001

Hasler-Sheetal H, Castorani MCN, Glud RN, Holmer M (2016). Metabolomics reveals cryptic interactive effects of species interactions and environmental stress on nitrogen and sulfur metabolism in seagrass. Environmental Science & Technology. DOI:10.1021/acs.est.6b04647

Röhr EM, Boström C, Canal–Vergés P, Holmer M (2016). Blue carbon stocks in Baltic Sea eelgrass (Zostera marina) meadows. Biogeosciences 13, 6139-6153. DOI:10.5194/bg-13-6139-2016

Thormar J, Hasler-Sheetal H, Baden S, Boström C, Clausen KK, Krause-Jensen D, Olesen B, Rasmussen JB; Svensson CJ, Holmer M (2016). Eelgrass (Zostera marina) Food Web Structure in Different Environmental Settings. PloS One 11,1.

Moksnes P-O, Eriander L, Infantes E, Holmer M (2018). Local regime shifts prevent natural recovery and restoration of lost eelgrass beds along the Swedish west coast. Estuaries and Coasts. DOI:10.1007/s12237-018-0382-y

 Seidelin L, Wahlberg M, Holmer M (2018). Using live-stream video from artificial reefs to increase student interest in marine biology. Journal of Marine Science and Engineering 6, 47. DOI:10.3390/jmse6020047

Apostolaki E, Holmer M, Santinelli V, Karakassis I (2018). Species-specific response to sulfide intrusion in indigenous and non-indigenous Mediterranean seagrasses under stress. Marine Environmental Research 134:85-95. DOI:10.1016/j.marenvres.2017.12.006

Röhr E, Holmer M, Baum J, Bjork M, Chin D, Chalifour L, Cimon S, Cusson M, Dahl M, Deyanova D, Duffy J, Eklof J, Geyer J, Griffin J, Gullström M, Hereu C, Hori M, Hovel K, Hughes A, Jorgensen P, Kiriakopolos S, Moksnes P-O, Nakoka M, O´Connor M, Peterson B, Reiss K, Reynolds P, Rossi F, Ruesink J, Santos R, Stachowicz, Tomas F, Lee K-S, Boström C (2018). Blue carbon storage capacity of temperate eelgrass (Zostera marina) meadows. Global Biogeochemical Cycles 32(10):1457-1475

Kindeberg T, Ørberg SB, Röhr E, Holmer M, Krause-Jensen D. (2018) Sediment stocks of carbon, nitrogen, and phosphorus in Danish eelgrass meadows. Frontiers in Marine Science, section Marine Ecosystem Ecology 5,474. DOI: 10.3389/fmars.2018.00474

Thorsen SW, Kristensen E, Valdemarsen T, Flindt MR, Quintana CO, Holmer M. Fertilizer-derived N in opportunistic macroalgae after flooding of agricultural land. Marine Ecology Progress Series (accepted)

Keeley N, Valdemarsen T, Woodcock S, Holmer M, Husa V, Bannister (2019). Resilience of dynamic coastal benthic ecosystems in response to large-scale finfish farming. Aquaculture Environment Interactions 11:161-179. DOI:10.3354/aei00301

Last Updated 09.08.2023