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Marine Ecology

  • Korallenriff im Roten Meer

    Coral reef of the northern Red Sea

    Location: Marine Science Station, Aqaba, Jordan

    / Photographer: Malik Naumann

  • Fische im Rotem Meer

    Reef fish in the Gulf of Aqaba (Red Sea)

    Location: Blue Hole, Dahab, Egypt

    / Photographer: Malik Naumann

  • Blick aufs Meer.

    Caribbean ocean view

    Location: Tulum, Yucatan, Mexico

    / Photographer: Malik Naumann

Ein Foto von Christian Wild.


Prof. Dr. Christian Wild
Marine Ecology
FB2 Biology / Chemistry
University of Bremen


Email: christian.wildprotect me ?!uni-bremenprotect me ?!.de
Telephone: +49 421 218 63367
Room: UFT 2160

UFT, Leobener Str. 6
D-28359 Bremen




Inae Kim-Frommherz

Email: inaekfprotect me ?!uni-bremenprotect me ?!.de

Telefon: +49 421 218 62945
Raum: NW2 B 4010







Students and scientist of the Marine Ecology department presented their latest findings from 11-14 September 2018 at YOUMARES 9 in Oldenburg.

Das Cover von Highlights.
Korallenriff im Roten Meer.

Article in Universität Bremen "Highlights"

Scenes from a Marriage: When the Algae and the Coral Separate



The department of Marine Ecology pursues an interdisciplinary approach and uses a range of appropriate tools from the fields of ecophysiology, biogeochemistry, and microbiology in order to address the following focal research areas:

Acropora Korallen.

Ecosystem engineers and other key organism groups

We are investigating the impact of variable environmental factors (biotic and abiotic) and the influence of global (e.g. ocean acidification and warming) and local (e.g. eutrophication and overfishing) stressors on physiological processes (e.g. photosynthesis, growth, calcification, feeding and reproduction) of selected key organism groups (e.g. corals, sponges, algae), with emphasis on ecosystem engineers and their early life stages.

Eine Korallen-Algen-Interaktion.

Dynamics of benthic communities

This theme addresses the sensitivity of benthic communities (coral reefs, seagrass meadows, rocky shores) to anthropogenic disturbances (such as climate change, overfishing and eutrophication). We thereby focus on the interactions between different functional groups to assess community dynamics and biogeochemical community responses to environmental changes.

Der Kreislauf des Korallenschleims.

Nutrient cycles and energy transfer

Here, we examine the transport and exchange of organic matter and energy between the water column and benthic communities as well as between benthic ecosystems. This research further allows to understand linkage and connectivity with adjacent marine and terrestrial ecosystems. Our focus lies on biogeochemical carbon and nitrogen cycles.



PhD candidates

Ein Photo von Ameris Contreras.

Contact :

ameris.contrerasprotect me ?!uni-bremenprotect me ?!.de

+49 421 218 63358

Room : UFT 2170

PhD candidate

Ein Foto von Yusuf El-Khaled.

Contact :

yusuf.el-khaledprotect me ?!uni-bremenprotect me ?!.de

+49 421 218 63358

Room : UFT 2170

PhD candidate

Ein Foto von Anna Koester.

Contact :

anna.koesterprotect me ?!uni-bremenprotect me ?!.de

+49 421 218 63358

Room : UFT 2170

PhD candidate

Ein Foto von Nils Rädecker.

Contact :

n.raedeckerprotect me ?!gmailprotect me ?!.com

Location : King Abdullah University of Science & Technology

PhD candidate

Ein Foto von Florian Roth.

Contact :

florian.rothprotect me ?!uni-bremenprotect me ?!.de

Location : King Abdullah University of Science & Technology

PhD candidate

Contact :

s-simancprotect me ?!uniandes.eduprotect me ?!.co

+49 421 218 63303

Room : UFT 2150

PhD candidate

Ein Photo von Arjen Tilstra.

Contact :

tilstraprotect me ?!uni-bremenprotect me ?!.de

+49 421 218 63358

Room : UFT 2170

PhD candidate

Master students

Ein Foto von Xochitl Elias.

Master Student

Ein Foto von Denis Karcher.

Master Student

Master Student

Ein Foto von Malika Müller.

Master Student

Ein Foto von Constanze Staab.

Master Student

Master Student

Master Student

Bachelor students

Bachelor student

Bachelor student in Labtop-Program

Bachelor student

Raïssa Meyer

Bachelor student

Bachelor student

Bachelor student

Ein Foto von Neele Schmidt.

Bachelor student

ICRS 2020 Conference Secretariat

Ein Foto von Malik Naumann.

Contact :

officeprotect me ?!icrs2020protect me ?!.de

+49 421 218 63303

Room : UFT 2150

Technical support

Student assistant


Ein Foto von Inae Kim-Frommherz.

Contact :

inaekfprotect me ?!uni-bremenprotect me ?!.de

+49 421 218 62945

Room : NW2 B 4010

Publications in 2017 / 2018

23) Tilstra A, van Hoytema N, Cardini U, Bednarz VN, Rix L, Naumann MS,  Al-Horani FA, Wild C (2018) Effects of water column mixing and stratification on planktonic primary production and dinitrogen fixation on a northern Red Sea coral reef. Frontiers in Microbiology DOI: 10.3389/fmicb.2018.02351

22) Bednarz VN, Naumann MS, Cardini U, Van Hoytema N, Rix L, Rshaidat M, Wild C (2018) Contrasting seasonal responses in dinitrogen fixation between shallow and deep-water colonies of the model coral Stylophora pistillata in the northern Red Sea. PLOS ONE DOI: 10.1371/journal.pone.0199022

21) Lee S, Ford AK, Mangubhai S, Wild C, Ferse SCA (2018) Effects of sandfish (Holothuria scabra) removal on shallow-water sediments in Fiji. Peer J, DOI 10.7717/peerj.4773

20) Sánchez-NogueraC, StuhldreierI, CortésJ, JiménezC, MoralesA, WildC, RixenT (2018) Natural ocean acidification at Papagayo upwelling system (North Pacific Costa Rica): implications for reef development. Biogeosciences, DOI: 10.5194/bg-15-2349-2018

19) Rix L, de Goeij JM, van Oevelen D, Struck U, Al-Horani FA, Wild C, Naumann MS (2018) Reef sponges facilitate the transfer of coral-derived organic matter to their associated fauna via the sponge loop. Marine Ecology Progress Series 589:85-96 DOI: 10.3354/meps12443

18) Pogoreutz C, Rädecker N, Cárdenas A, Gärdes A, Wild C, Voolstra CR (2018) Dominance of Endozoicomonas  bacteria throughout coral bleaching and mortality suggests structural inflexibility of the Pocillopora verrucosa microbiome. Ecology and Evolution 1–13 DOI: 10.1002/ece3.3830

17) Plass-Johnson JG, Ferse SC, Bednarz VN, Gärdes A, Heiden J, Lukman M, Miñarro S, Schwieder H, Weiand L, Wild C, Reuter H, Teichberg M (2018) Spatio-temporal patterns in the coral reef communities of the Spermonde Archipelago, 2012-2014, II: Fish assemblages display structured variation related to benthic condition. Frontiers in Marine Science DOI: 10.3389/fmars.2018.00036

16) Teichberg M, Wild C, Bednarz VN, Kegler HF, Lukman M, et al. (2018) Spatio-temporal patterns in coral reef communities of the Spermonde Archipelago, 2012-2014, I: Comprehensive reef monitoring reveals two indices that reflect changes in reef health. Frontiers in Marine Science DOI: 10.3389/fmars.2018.00036

15) Roth F, Stuhldreier I, Sanchez Noguera C, Carvalho S, Wild C (2017) Local stressors promote the relative success of D. cf. perlucidum in a tropical environment. Aquatic Invasions DOI: 10.3391/ai.2017.12.4.02

14) Ford AK, Eich A, McAndrews R, Mangubhai S, Nugues M, Bejarano S, Wild C, Moore BR, Rico C, Ferse SAC (2017) Contrasting interpretations of local management effectiveness from conventional versus complementary and process-based metrics. Ecological Indicators, DOI: 10.1016/j.ecolind.2017.10.002

13) Peiffer F, Bejarano S, de Witte GP, Wild C (2017) Ongoing removals of invasive lionfish in Honduras and their effect on native Caribbean prey fishes. PeerJ 5:e3818.

12) Tilstra A, Wijgerde T, Dini-Andreote F, Eriksson BK, Salles JF, Pen I, Osinga R, Wild C (2017) Light induced intraspecific variability in response to thermal stress in the hard coral Stylophora pistillata. PeerJ 5:e3802.

11) Cárdenas A, Neave MJ, Haroon MF, Pogoreutz C, Rädecker N, Wild C, Gärdes A, Voolstra CR (2017) Excess labile carbon promotes the expression of virulence factors in coral reef bacterioplankton. The ISME Journal.

10) Rädecker N, Pogoreutz C, Wild C, Voolstra CR (2017) Stimulated Respiration and Net Photosynthesis in Cassiopeia sp. during Glucose Enrichment Suggests in hospite CO2 Limitation of Algal Endosymbionts. Frontiers in Marine Science 4:267.

9) Tilstra A, Bednarz VN, Cardini U, van Hoytema N, Al-Rshaidat MM, Wild C (2017) Seasonality affects dinitrogen fixation associated with two common macroalgae from a coral reef in the northern Red Sea. Marine Ecology Progress Series 575:69-80.

8) Pogoreutz C, Rädecker N, Cárdenas A, Gärdes A, Wild C, Voolstra CR (2017) Nitrogen fixation aligns with nifH abundance and expression in two coral trophic functional groups. Frontiers in Microbiology 8:1187.

7) Pogoreutz C, Rädecker N, Cárdenas A, Gärdes A, Voolstra CR, Wild C (2017) Sugar enrichment provides evidence for a role of nitrogen fixation in coral bleaching. Global Change Biology.

6) Puk LD, Ferse SC, Wild C (2017) Erratum to: Patterns and trends in coral reef macroalgae browsing: a review of browsing herbivorous fishes of the Indo-Pacific. Reviews in Fish Biology and Fisheries 27(1):287-92.

5) Rix L, Goeij JM, Oevelen D, Struck U, Al‐Horani FA, Wild C, Naumann MS (2017) Differential recycling of coral and algal dissolved organic matter via the sponge loop. Functional Ecology 31(3):778-89.

4) Ford AK, Van Hoytema NA, Moore BR, Pandihau L, Wild C, Ferse SC (2017) High sedimentary oxygen consumption indicates that sewage input from small islands drives benthic community shifts on overfished reefs. Environmental Conservation 1-7.

3) Teichberg MC, Ferse SC, Bednarz VN, Gärdes A, Heiden JP, Lukman M, Miñarro S, Schwieder H, Weiand L, Wild C, Reuter H (2017) Spatio-temporal patterns in coral reef communities of the Spermonde Archipelago, 2012-2014, I: comprehensive reef monitoring reveals two indices that reflect changes in reef health. Frontiers in Marine Science.

2) Lee S, Ferse SCA, Ford A, Wild C, Mangubhai S (2017) Effect of sea cucumber density on the health of reef-flat sediments Fiji's Sea Cucumber Fishery: Advances in Science for Improved Management. Wildlife Conservation Society. Report

1) Kegler HF, Lukman M, Teichberg M, Plass-Johnson J, Hassenrück C, Wild C, Gärdes, A (2017) Bacterial Community Composition and Potential Driving Factors in Different Reef Habitats of the Spermonde Archipelago, Indonesia. Frontiers in Microbiology, 8, 662

Publication Highlights

Rix L, de Goeij J, van Oevelen D, Struck U, al-Horani F, Wild C, Naumann MS (2016) Differential recycling of coral and algal dissolved organic matter via the sponge loop. Functional Ecology, DOI: 10.1111/1365-2435.12758

Rix L, De Goeij JM, Mueller CE, Struck U, Middelburg JJ, Van Duyl FC, Al-Horani FA, Wild C, Naumann MS, Van Oevelen D (2016) Coral mucus fuels the sponge loop in warm-and cold-water coral reef ecosystems. Scientific Reports 7;6:18715 DOI: 10.1038/srep18715 

Rädecker N, Pogoreutz C, Voolstra CR, Wiedenmann J, Wild C (2015) Nitrogen cycling in corals: the key to understand holobiont functioning? Trends in Microbiology 23(8): 490-497 DOI: 10.1016/j.tim.2015.03.008

Cardini U, Bednarz VN, Naumann MS, van Hoytema N, Rix R, Foster RA, Al-Rshaidat MMD, Wild C (2015) Functional significance of dinitrogen fixation in sustaining coral productivity under oligotrophic conditions. Proceedings of the Royal Society B 282: DOI: 10.1098/rspb.2015.2257282:20152257

Meyer FW, VogelN, Teichberg M, Uthicke S, Wild C (2015) The physiological response of two green calcifying algae from the Great Barrier Reef towards high dissolved inorganic and organic carbon (DIC and DOC) availability. PLoS One, DOI 10.1371/journal.pone.0133596 

Bayraktarov E, Wild C (2014) Spatiotemporal variability of sedimentary organic matter supply and recycling processes in coral reefs of Tayrona National Natural Park, Colombian Caribbean. Biogeosciences 11: 2977-2990 DOI: 10.5194/bgd-10-19895-2013

Wild C, Naumann MS (2013) Effect of active water movement on energy and nutrient acquisition in coral reef-associated benthic organisms. Proceedings of the National Academy of Sciences of the US 110(22): 8767-8768 DOI: 10.1073/pnas.1306839110

Schöttner S, Pfitzner B, Grünke S, Rasheed M, Wild C, Ramette A (2011) Drivers of bacterial diversity dynamics in permeable carbonate and silicate coral reef sands from the Red Sea. Environmental Microbiology 13 (7): 1815-1826 DOI: 10.1111/j.1462-2920.2011.02494.x

Witt V, Wild C, Anthony K, Diaz‐Pulido G, Uthicke S (2011) Effects of ocean acidification on microbial community composition of, and oxygen fluxes through, biofilms from the Great Barrier Reef. Environmental Microbiology 13 (11): 2976-2989 DOI: 10.1111/j.1462-2920.2011.02571.x

Wild C, Huettel M, Klueter A, Kremb SG, Rasheed MY, Jørgensen BB (2004) Coral mucus functions as an energy carrier and particle trap in the reef ecosystem. Nature 428 (6978):66-70 DOI: 10.1038/nature02344