Citation:

PANGAEA.971557

Name: Physical properties of aggregates exposed to varying concentrations of microfibres
Published: 2024-08-19
License: https://creativecommons.org/licenses/by/4.0/
Keywords: aggregates; Carbon cycling; marine snow; microfibres; Microplastics; particles; particulate organic matter; pollution

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Published: 2024-08-19 • DOI registered: 2024-08-19

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Abstract:

Size, volume and settling velocity were measured by making a recording of the rotating tanks using a commercial digital single-lens reflex camera (Canon) equipped with a standard lens of 50 mm for focal length.

Settling velocity is measured in m d -1 . POC was measured with an elemental anlayzer isotope ratio mass spectrometry (EA-IRMS, ANCA-SL 20-20, Sercon Ltd. Crewe, UK). POC is measured in µg. Potential export flux was estimated for each treatment as an average of the final three timepoints (118h,143h and 163h) of the experimental period. This was done each treatment by using the POC-to-volume ratio to determine the POC content per aggregate and multiplying with the measured settling velocity to get potential POC flux from each aggregate.

Keyword(s):

aggregates; Carbon cycling; marine snow; microfibres; Microplastics; particles; particulate organic matter; pollution

Funding:

Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. VH-NG-1000: Helmholtz Young Investigator Group SeaPump - Seasonal and regional food web interactions with the biological pump

German Research Foundation (DFG), grant/award no. 390741603 : EXC 2077: The Ocean Floor – Earth's Uncharted Interface

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type of study	Study type		Roberts, Cordelia
2	Species, unique identification	Species UID		Roberts, Cordelia
3	Species, unique identification (Semantic URI)	Species UID (Semantic URI)		Roberts, Cordelia
4	Species, unique identification (URI)	Species UID (URI)		Roberts, Cordelia
5	Experiment duration	Exp duration	days	Roberts, Cordelia
6	Experiment duration	Exp duration	h	Roberts, Cordelia
7	Treatment	Treat		Roberts, Cordelia		Microfibre treatment
8	Aggregates, size	Agg size	mm	Roberts, Cordelia	Digital single-lens reflex camera (Canon) equipped with a standard lens of 50 mm
9	Aggregates, volume	Agg vol	mm³	Roberts, Cordelia	Digital single-lens reflex camera (Canon) equipped with a standard lens of 50 mm
10	Aggregates, volume	Agg vol	mm³/l	Roberts, Cordelia	Digital single-lens reflex camera (Canon) equipped with a standard lens of 50 mm
11	Aggregates, settling velocity	Agg settl vel	m/day	Roberts, Cordelia	Digital single-lens reflex camera (Canon) equipped with a standard lens of 50 mm
12	Carbon, organic, particulate mass	POC	µg	Roberts, Cordelia	Elemental anlayzer isotope ratio mass spectrometry (EA-IRMS), Sercon Ltd. Crewe, UK, ANCA-SL 20-20
13	Carbon, organic, particulate fractionated	POC frac	µg/l	Roberts, Cordelia	Elemental anlayzer isotope ratio mass spectrometry (EA-IRMS), Sercon Ltd. Crewe, UK, ANCA-SL 20-20
14	Carbon, organic, particulate, flux	POC flux	mg/m²/day	Roberts, Cordelia	Elemental anlayzer isotope ratio mass spectrometry (EA-IRMS), Sercon Ltd. Crewe, UK, ANCA-SL 20-20

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

2988 data points

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