Skip to Main content Skip to Navigation
Journal articles

Effect of Type and Concentration of Ballasting Particles on Sinking Rate of Marine Snow Produced by the Appendicularian Oikopleura dioica

Abstract : Ballast material (organic, opal, calcite, lithogenic) is suggested to affect sinking speed of aggregates in the ocean. Here, we tested this hypothesis by incubating appendicularians in suspensions of different algae or Saharan dust, and observing the sinking speed of the marine snow formed by their discarded houses. We show that calcite increases the sinking speeds of aggregates by ~100% and lithogenic material by ~150% while opal only has a minor effect. Furthermore the effect of ballast particle concentration was causing a 33 m d-1 increase in sinking speed for a 5×10 5 µm 3 ml-1 increase in particle concentration, near independent on ballast type. We finally compare our observations to the literature and stress the need to generate aggregates similar to those in nature in order to get realistic estimates of the impact of ballast particles on sinking speeds.
Complete list of metadatas

Cited literature [49 references]  Display  Hide  Download

https://hal-amu.archives-ouvertes.fr/hal-01771755
Contributor : Administrateur Hal Amu <>
Submitted on : Thursday, April 19, 2018 - 5:45:38 PM
Last modification on : Friday, September 18, 2020 - 3:40:07 PM
Long-term archiving on: : Tuesday, September 18, 2018 - 4:34:02 PM

File

journal.pone.0075676.PDF
Publication funded by an institution

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Fabien Lombard, Lionel Guidi, Thomas Kiørboe. Effect of Type and Concentration of Ballasting Particles on Sinking Rate of Marine Snow Produced by the Appendicularian Oikopleura dioica. PLoS ONE, Public Library of Science, 2013, 8 (9), pp.e75676. ⟨10.1371/journal.pone.0075676⟩. ⟨hal-01771755⟩

Share

Metrics

Record views

477

Files downloads

264