Carbon and Nitrogen uptake rates in the East Antarctic sea-ice zone, (SIPEX II preliminary results)

Arnout Roukaerts; Anne Julie Cavagna; Frank Dehairs

Abstract

As a continuation of SIPEX I (2007), the SIPEX II expedition (Sept.-Nov. 2012) took place in the East Antarctic sector (63–66°S, 115-125°E; R/V Aurora Australis) in pre-bloom conditions. Our work focused on improving the understanding of nutrient cycling and primary production in the seasonal drift ice. Various nutrient uptake rates (HCO3-, NO3-, NH4+ and H4SiO4) were measured using stable isotope dilution methods (13C, 15N, 30Si). Sampling and experiments were conducted in close relation with the trace metal group in order to link nutrient cycling with the availability of trace metals such as iron.
Aside from enrichment experiments, also samples for natural nitrate isotopy (δ15N-NO3- and δ18O-NO3-) were taken to obtain indications on trophic processes regarding the nitrogen cycle. We present here preliminary results for the ice core nutrient incubation experiments.

Original language	English
Title of host publication	45th International Liège Colloquium, Primary Production in the Ocean: From the Synoptic to the Global Scale, May 13-17, 2013, Liège, Belgium
Publication status	Published - 2013
Event	45th International Liège Colloquium, Primary Production in the Ocean: From the Synoptic to the Global Scale - Liege, Belgium Duration: 13 May 2013 → 17 May 2013

Conference

Conference	45th International Liège Colloquium, Primary Production in the Ocean: From the Synoptic to the Global Scale
Country/Territory	Belgium
City	Liege
Period	13/05/13 → 17/05/13

Cite this

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title = "Carbon and Nitrogen uptake rates in the East Antarctic sea-ice zone, (SIPEX II preliminary results)",

abstract = "As a continuation of SIPEX I (2007), the SIPEX II expedition (Sept.-Nov. 2012) took place in the East Antarctic sector (63–66°S, 115-125°E; R/V Aurora Australis) in pre-bloom conditions. Our work focused on improving the understanding of nutrient cycling and primary production in the seasonal drift ice. Various nutrient uptake rates (HCO3-, NO3-, NH4+ and H4SiO4) were measured using stable isotope dilution methods (13C, 15N, 30Si). Sampling and experiments were conducted in close relation with the trace metal group in order to link nutrient cycling with the availability of trace metals such as iron. Aside from enrichment experiments, also samples for natural nitrate isotopy (δ15N-NO3- and δ18O-NO3-) were taken to obtain indications on trophic processes regarding the nitrogen cycle. We present here preliminary results for the ice core nutrient incubation experiments. ",

author = "Arnout Roukaerts and Cavagna, {Anne Julie} and Frank Dehairs",

year = "2013",

language = "English",

booktitle = "45th International Li{\`e}ge Colloquium, Primary Production in the Ocean: From the Synoptic to the Global Scale, May 13-17, 2013, Li{\`e}ge, Belgium",

note = "45th International Li{\`e}ge Colloquium, Primary Production in the Ocean: From the Synoptic to the Global Scale ; Conference date: 13-05-2013 Through 17-05-2013",

}

Roukaerts, A, Cavagna, AJ & Dehairs, F 2013, Carbon and Nitrogen uptake rates in the East Antarctic sea-ice zone, (SIPEX II preliminary results). in 45th International Liège Colloquium, Primary Production in the Ocean: From the Synoptic to the Global Scale, May 13-17, 2013, Liège, Belgium. 45th International Liège Colloquium, Primary Production in the Ocean: From the Synoptic to the Global Scale, Liege, Belgium, 13/05/13.

Carbon and Nitrogen uptake rates in the East Antarctic sea-ice zone, (SIPEX II preliminary results). / Roukaerts, Arnout; Cavagna, Anne Julie; Dehairs, Frank.

45th International Liège Colloquium, Primary Production in the Ocean: From the Synoptic to the Global Scale, May 13-17, 2013, Liège, Belgium. 2013.

Research output: Chapter in Book/Report/Conference proceeding › Meeting abstract (Book) › Research

TY - CHAP

T1 - Carbon and Nitrogen uptake rates in the East Antarctic sea-ice zone, (SIPEX II preliminary results)

AU - Roukaerts, Arnout

AU - Cavagna, Anne Julie

AU - Dehairs, Frank

PY - 2013

Y1 - 2013

N2 - As a continuation of SIPEX I (2007), the SIPEX II expedition (Sept.-Nov. 2012) took place in the East Antarctic sector (63–66°S, 115-125°E; R/V Aurora Australis) in pre-bloom conditions. Our work focused on improving the understanding of nutrient cycling and primary production in the seasonal drift ice. Various nutrient uptake rates (HCO3-, NO3-, NH4+ and H4SiO4) were measured using stable isotope dilution methods (13C, 15N, 30Si). Sampling and experiments were conducted in close relation with the trace metal group in order to link nutrient cycling with the availability of trace metals such as iron. Aside from enrichment experiments, also samples for natural nitrate isotopy (δ15N-NO3- and δ18O-NO3-) were taken to obtain indications on trophic processes regarding the nitrogen cycle. We present here preliminary results for the ice core nutrient incubation experiments.

AB - As a continuation of SIPEX I (2007), the SIPEX II expedition (Sept.-Nov. 2012) took place in the East Antarctic sector (63–66°S, 115-125°E; R/V Aurora Australis) in pre-bloom conditions. Our work focused on improving the understanding of nutrient cycling and primary production in the seasonal drift ice. Various nutrient uptake rates (HCO3-, NO3-, NH4+ and H4SiO4) were measured using stable isotope dilution methods (13C, 15N, 30Si). Sampling and experiments were conducted in close relation with the trace metal group in order to link nutrient cycling with the availability of trace metals such as iron. Aside from enrichment experiments, also samples for natural nitrate isotopy (δ15N-NO3- and δ18O-NO3-) were taken to obtain indications on trophic processes regarding the nitrogen cycle. We present here preliminary results for the ice core nutrient incubation experiments.

M3 - Meeting abstract (Book)

BT - 45th International Liège Colloquium, Primary Production in the Ocean: From the Synoptic to the Global Scale, May 13-17, 2013, Liège, Belgium

T2 - 45th International Liège Colloquium, Primary Production in the Ocean: From the Synoptic to the Global Scale

Y2 - 13 May 2013 through 17 May 2013

ER -

Carbon and Nitrogen uptake rates in the East Antarctic sea-ice zone, (SIPEX II preliminary results)

Abstract

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