Benthic diagenesis and microbiology of hadal trenches

Project: Research

Project Details

Description

With this project, called HADES, we aim to provide the first detailed, combined analysis of benthic diagenesis and microbial ecology of some of the deepest oceanic trenches on Earth. We argue that deep trenches, some of the most remote, extreme, and scantly explored habitats on Earth, are hotspots of deposition and mineralization of organic material. With the development of novel autonomous in situ instrumentation to overcome large sampling artifacts from decompression, we will i) determine rates of benthic metabolism and the importance of the deep trenches for the marine carbon and nitrogen cycles, ii) explore the unique benthic microbial communities driving these processes, and iii) investigate the proposed great role of virus in regulating microbial performance and carbon cycling in hadal sediments. By comparing trenches from contrasting oceanic settings the project provides a completely novel general analysis of hadal biogeochemistry and the role of deep trenches in the oceans, as well as fundamental new insights into the composition and functioning of microbial communities at extreme pressure.
StatusActive
Effective start/end date01/01/201631/12/2020

Related Research Output

  • 11 Journal article

Deposition and benthic mineralization of organic carbon: A seasonal study from Faroe Islands

á Nordi, G., Glud, R. N., Simonsen, K. & Gaard, E., 2018, In : Journal of Marine Systems. 177, p. 53-61

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
  • 207 Downloads (Pure)

    Effect of settled diatom-aggregates on benthic nitrogen cycling

    Marzocchi, U., Thamdrup, B., Stief, P. & Glud, R. N., Jan 2018, In : Limnology and Oceanography. 63, 1, p. 431-444

    Research output: Contribution to journalJournal articleResearchpeer-review

    Open Access
    File
  • 223 Downloads (Pure)

    A mesocosm study of oxygen and trace metal dynamics in sediment microniches of reactive organic material

    Letho, N., Larsen, M., Zhang, H., Glud, R. N. & Davison, W., 2017, In : Scientific Reports. 7, 12 p., 11369.

    Research output: Contribution to journalJournal articleResearchpeer-review

    Open Access
    File
    213 Downloads (Pure)

    Related Activities

    Feltarbejde, Kermadec Trench, ud for New Zealand

    Bo Thamdrup (Participant)

    19. Nov 201717. Dec 2017

    Activity: Other activitiesOther

    HADES Feltarbejde, Kermadec Trench, ud for New Zealand

    Ronnie N. Glud (Participant)

    15. Nov 201719. Dec 2017

    Activity: Other activitiesOther