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Göteborgs universitets publikationer

Zooplankton as transformers: Fatty acid content and conversion from seston to benthos

Författare och institution:
Peter Tiselius (Institutionen för biologi och miljövetenskap); Benni Winding Hansen (-); Danilo Calliari (Institutionen för biologi och miljövetenskap)
Publicerad i:
2012 Ocean Science meeting, Salt Lake City, USA,
Konferensbidrag, övrigt
Sammanfattning (abstract):
We sampled seston, zooplankton and sediment trap material for fatty acid (FA) analysis during 5 campaigns spanning four seasons at a coastal site on the west coast of Sweden. Saturated (SAFA) and monounsaturated (MUFA) FAs dominated seston and trap material, while copepods contained 75-90% polyunsaturated FAs (PUFA). Sedimentation of bulk particulate organic carbon did not vary significantly with season, while pigment and in particular faecal pellet fluxes were highly variable as a result of copepod feeding. Copepod feeding, pellet and egg production were all high in summer and after the spring bloom and this resulted in a significant difference in FA composition between seston and sedimenting matter. SAFAs and MUFAs were enriched by 5-10% in sediment traps, while the sedimentation of the most important PUFA, docosahexaenoic acid (DHA), was reduced by up to 15% in summer and autumn. Overall, 5-25% of the sedimenting FAs were affected by copepod transformation with the highest transformation in the summer and autumn. Poster presentation Session #:146 Date: 2/20/2012 Time: 08:00 - 10:00 Location: Poster/Exhibit Hall Presentation is given by student: No PosterID: A0614
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Biologiska vetenskaper ->
Ekologi ->
Marin ekologi
Copepods, PUFA, Sediment traps
Postens nummer:
Posten skapad:
2012-02-28 21:00
Posten ändrad:
2012-03-01 15:17

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