Opendata, web and dolomites


Bio-physical processes around marine snow aggregates

Total Cost €


EC-Contrib. €






Project "BIPHA" data sheet

The following table provides information about the project.


Organization address
postcode: 405 30

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Sweden [SE]
 Project website
 Total cost 173˙857 €
 EC max contribution 173˙857 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2014
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2015
 Duration (year-month-day) from 2015-11-01   to  2018-12-18


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    GOETEBORGS UNIVERSITET SE (GOETEBORG) coordinator 173˙857.00


 Project objective

Advancing our understanding of biologically driven sequestration of carbon is crucial given the rapidly increasing atmospheric CO2 concentrations. Diatoms are the most common type of phytoplankton and, as the ocean’s biological carbon pump, a key component in this process. Diatom aggregates, in particular, comprise a significant fraction of sinking particulate matter drawing down atmospheric carbon to the depths of the ocean. Diatoms produce transparent exopolymeric particles (TEP), a gel-like sticky sugary substance, which plays a significant role in the subsequent coagulation of diatoms into aggregates as their blooms terminate. These sinking aggregates are composed of diatoms, detritus and faecal pellets and are so-called marine snow aggregates.

We will use recent innovations in technology to study the role of TEP content for:

• Scavenging of particles • Flow and diffusion within and around diatom aggregates We will draw upon the specialized expertise of the applicant and the beneficiary to study diatom aggregates in detail using methods which have greatly profited from technological advances:

• Particle image velocimetry, and • digital holographic microscopy, in combination with • microsensors, to study mass transfer at a sub-mm scale.

The methods will enable us for the first time to quantify directly any flow inside the aggregates, also called the interstitial fluid flow, and to visualize the aggregate’s structure and particle composition. Targeting these processes with advanced instrumentation will bring European research on aggregates to the forefront in terms of the technology, but more importantly, our understanding of carbon cycling in the ocean and our position on future climate change impacts.


year authors and title journal last update
List of publications.
2019 Malin Olofsson, Olga Kourtchenko, Eva-Maria Zetsche, Hannah K. Marchant, Martin J. Whitehouse, Anna Godhe, Helle Ploug
High single-cell diversity in carbon and nitrogen assimilations by a chain-forming diatom across a century
published pages: 142-151, ISSN: 1462-2912, DOI: 10.1111/1462-2920.14434
Environmental Microbiology 21/1 2019-05-20
2018 Torsten Linders, Eduardo Infantes, Alyssa Joyce, Therese Karlsson, Helle Ploug, Martin Hassellöv, Mattias Sköld, Eva-Maria Zetsche
Particle sources and transport in stratified Nordic coastal seas in the Anthropocene
published pages: 29, ISSN: 2325-1026, DOI: 10.1525/elementa.149
Elem Sci Anth 6/1 2019-05-20

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