Carbon and nitrogen turnover during a mesocosm experiment with addition of Palmaria decipiens and Desmarestia anceps to sediments from Potter Cove ...

To understand the fate of the increasing amount of macroalgal detritus in Antarctic shallow subtidal sediments, a mesocosm experiment was conducted to track 13C and 15N labelled macroalgal detritus into the benthic bacterial, meio- and macrofaunal biomass and respiration of sediments from Potter Cov...

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Bibliographic Details
Main Authors: Braeckman, Ulrike, Pasotti, Francesca, Vázquez, Susana, Zacher, Katharina, Hoffmann, Ralf, Elvert, Marcus, Marchant, Hannah K, Buckner, Caroline, Quartino, Maria Liliana, Mac Cormack, Walter, Soetaert, Karline, Wenzhöfer, Frank, Vanreusel, Ann
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2019
Subjects:
Core
Antarctic
Faro
Hannah
King George Island
Potter Cove
Antarc*
Online Access:https://dx.doi.org/10.1594/pangaea.897419
https://doi.pangaea.de/10.1594/PANGAEA.897419
Description
Summary:To understand the fate of the increasing amount of macroalgal detritus in Antarctic shallow subtidal sediments, a mesocosm experiment was conducted to track 13C and 15N labelled macroalgal detritus into the benthic bacterial, meio- and macrofaunal biomass and respiration of sediments from Potter Cove (King George Island). We compared the degradation pathways of two macroalgae species: one considered palatable for herbivores (the red algae Palmaria decipiens), and one considered non-palatable for herbivores (the brown algae Desmarestia anceps). 15 sediment cores were taken from station Faro at 20m water depth. 13C and 15N labelled macroalgae were added to 10 cores: 5 cores received Desmarestia anceps, 5 cores received Palmaria decipiens. 5 cores did not receive any macroalgae and acted as a control. At different points in time, the cores were closed airtight for a dark incubation of 12h, during which oxygen was measured to calculate Total Oxygen Uptake (TOU), next to 13C-DIC, total nutrients and 15N-labelled ... : Supplement to: Braeckman, Ulrike; Pasotti, Francesca; Vázquez, Susana; Zacher, Katharina; Hoffmann, R; Elvert, Marcus; Marchant, Hannah K; Buckner, Caroline; Quartino, Maria Liliana; Mac Cormack, Walter; Soetaert, Karline; Wenzhöfer, Frank; Vanreusel, Ann (2019): Degradation of macroalgal detritus in shallow coastal Antarctic sediments. Limnology and Oceanography, 64, 1423-1441 ...

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