Humans and Marine Ecosystems

The current and future state of marine ecosystems and biogeochemical cycles is subject to the increasing influence of human activities and human interventions. Prediction, risk assessment and the development of precautionary measures require a comprehensive understanding of the sensitivity of marine species, the ecosystems formed by them and the biogeochemical cycles.

In particular, the following factors need to be taken into account: climate-induced ocean acidification, oxygen depletion, changes in the near-surface mixing of the oceans, excessive nutrient supply (eutrophication), invasive species, spreading of pathogens and parasites, regional and global biodiversity losses and the increasing exploitation of biological resources. Through the application and further development of genetic and genomic methods, the evolutionary-biological reactions of species to anthropogenic disturbances are of increasing interest.

Further scientific information can be found on the pages of the Research Division 2: Marine Biogeochemisty and Research Division 3: Marine Ecology.

News for research topic "Humans and Marine Ecosystems"

Erlenmeyer flask with turbid liquid

Microplastics hardly affect blue mussels

Unique long-term experiment shows only few effects of artificial particles on filter feeders

A comb jellyfish Mnemiopsis leidyi. Photo: Cornelia Jaspers /GEOMAR/DTU Aqua

Aquatic invasive species cause damage worth billions of dollars

First global study on economic costs of aquatic invasive species published

A man and a woman in work clothes stand at the stern of a ship and hold a scientific instrument in their hands. Glaciers can be seen in the background.  Photo: Bo Barker Jørgensen

Sediments are Nutrient Mediators in Arctic Fjords

Study shows complex interplay between glaciers and the seabed in Svalbard

View of the stormy Drake Passage from the British research vessel RRS JAMES CLARK ROSS

New factor in the carbon cycle of the Southern Ocean identified

GEOMAR scientists show that besides iron, manganese can also limit the growth of photosynthesis-performing plankton

The invasive red seaweed Agarophyton vermiculophyllum at the collection site in California. Photo: S. Krueger-Hadfield

Flexibility favours invasions

- Why picky seaweeds are poor invaders -

During Expediton MSM49, the PELAGIOS video system is prepared for a mission. Photo: Solvin Zankl,

New insights into the world of gelatinous plankton

Study shows species diversity and distribution in relation to an expanding oxygen minimum zone

A bongo net is hoisted on board the research vessel POSEIDON. Photo: Mark Lenz/GEOMAR

A Christmas plastic chase in the North Atlantic

Research vessel SONNE studies the path of plastic waste in the ocean

Cod larve. Photo: T. Reusch, GEOMAR.

No offspring for cod and herring

Scientists alerted: Fish stocks in the western Baltic Sea threatened by collapse

Glass sponges (Hexactinellida) are mainly found in the deep sea. The glass sponge Vazella pourtalesi (colloquially "Russian hat") is found in large quantities on the continental shelf off Canada: Photo: Ellen Kenchington, DFO. The Aquatic Symbiosis project will be the first to produce genomes of glass sponges. Its microbial symbionts, on the other hand, are already well researched (Bayer, Busch et al., mSystems 2020).

Symbioses in Aquatic Environments

International genome project tries to understand how aquatic species thrive together

RV PLOARSTERN and iced sea

Variability in the Arctic Carbon Cycle

GEOMAR scientists study seasonal changes in the Arctic Ocean