NIOZ: Ocean Systems

08/06/2022

22/12/2021

Dit is een gesponsord artikel op NU.nl

15/11/2021

Last Friday Ulrike successfully defended her thesis at Utrecht University. Congratulations Dr Hanz!

10/11/2021

Ulrike Hanz will defend her thesis entitled, Biological hotspots in the deep sea - Environmental controls and interactions in deep-sea sponge and coral assemblages in a hybrid meeting at Utrecht University on Friday 12 November.

02/11/2021

Succesfull first days of sampling in the SEALINK project! www.sealinkcarribean.net

22/09/2020

09/07/2020

After many months of preparations and two weeks of self isolation by all participants as a Covid-19 precaution measure, the time has finally come!
RV Pelagia will leave our harbour on Texel (NL) and set sail towards Greenland this weekend. The OSNAP (Overturning in the Subpolar North Atlantic Program) expedition allows NIOZ OCS physical oceanographer and chief scientist Dr Femke de Jong and her two PhD students Nora Fried and Elodie Duyck to recover, service and re-deploy moorings that monitor the Irminger current, as well as to deploy drifters which will be used to improve our knowledge of freshwater exchange pathways east of Greenland. This expedition will therefore be an important contribution to our understanding of the Atlantic Meridional Overturning Circulation (AMOC) transport across the subpolar North Atlantic.

For more information:
Check out the cruise blog for regular updates https://www.nioz.nl/en/blog/niozatsea-i-osnap-2020

Read this interview with Dr de Jong, where she not only talks about her groundbreaking research, but also addresses the importance of gender diversity and female role models in research:
https://nioz.foleon.com/nioz-annual-report/2019/ocean-systems/overlay/femke-de-jong/

OSNAP expedition logo, designed by PhD student Nora Fried

12/05/2020

NIOZ OCS PhD candidate Sabine Haalboom published her first first-author paper today!

The paper titled "Patterns of (trace) metals and microorganisms in the Rainbow hydrothermal vent plume at the Mid-Atlantic Ridge" serves as an important baseline study to characterise a natural hydrothermal vent plume prior to the onset of interference that potentially will be caused by deep sea mining of seafloor massive sulfides at these vent sites. Sabine Haalboom and her team show that hydrothermal vent plumes act as a unique chemically enriched environment where distinct and variable microbial habitats exist that must be taken into account in environmental impact assessments for deep sea mining activities.

The study was published in the open access journal Biogeoscience and is available online:
https://www.biogeosciences.net/17/2499/2020/

Congratulations on this important baseline study, Sabine and Co-authors!

Abstract. Hydrothermal vent fields found at mid-ocean ridges emit hydrothermal fluids that disperse as neutrally buoyant plumes. From these fluids seafloor massive sulfides (SMS) deposits are formed, which are being explored as possible new mining sites for (trace) metals and rar...

20/11/2019

Internship available at NIOZ OCS!

We're looking for a Msc Student who is interested in marine biogeochemical cycles.
During this research internship you will help to constrain the role of fish bones in sediment as a reservoir for phosphorus. You will identify fish bones from the sediment and then perform chemical analysis to determine their P (and other element) content to help to improve our understanding of marine P cycling.

For more details, check out this link

20/11/2019

NIOZ OCS PhD student Ulrike Hanz and her colleagues just published a paper about environmental impacts on benthic biodiversity in the oxygen minimum zones in the continental margins of Angola and Namibia.

They found thriving cold-water corals, which are able to survive due to a large food availability that can counteract the negative effects of high temperature and low oxygen concentrations, which are otherwise limiting factors for the growth of cold-water corals in other locations.

This is an important finding especially in the light of climate change, since temperatures are expected to rise and oxygen minimum zones will likely expand.

Read the whole article here:
https://www.biogeosciences.net/16/4337/2019/bg-16-4337-2019.html

04/11/2019

Postdoc vacancy at NIOZ Ocean Systems!

The department is looking for a Postdoc with a PhD in acoustics or related areas to work on a project titled "The effect of water quality on the acoustic footprint of ships” for 3 years (fulltime).
The first objective of this project is to obtain a high-quality dataset in which all relevant parameters affecting ship noise propagation are measured at sea. Second, the effect of individual and/or combined environmental parameter(s) on the occurrence and characteristics of micro-bubbles and cavitation will be investigated. Finally, this dataset will be used to direct future research in the laboratory and for the development of process-based models on cavitation and noise propagation

Application deadline is the 1st of December, check out the vacancy announcement for more details:

The Department of Ocean System Research (OCS) is looking for a highly motivated post doc with a background in marine inorganic carbon chemistry and acoustic properties of seawater (Principal investigators Prof. dr. Gert-Jan Reichart and Dr. Lennart de Nooijer).

30/09/2019

NIOZ OCS Alice Webb will publicly defend her PhD this Friday at Utrecht University!

Her research about the rates and mechanisms of coral dissolution by bioeroding sponges has shown that sponges are much more important in reef dissolution than previously thought. Their impact is also likely to increase even further with rising CO2 levels, tipping the dissolution-calcification balance of tropical coral reefs towards net dissolution.

To learn more
read her most recent paper about the underlying mechanisms of sponge bioerosion: https://www.nature.com/articles/s41598-018-36702-8
check out the summary of her project on the NIOZ homepage: https://www.nioz.nl/en/news/are-sponges-threatening-caribbean-reefs
and attend her PhD defense on the 4th of October, 12:45 in the Academiegebouw at Utrecht University!