Seasonal changes in the sinking export of particulate material under first-year sea ice on the Mackenzie Shelf (western Canadian Arctic)

Seasonal changes in the sinking export of particulate material under first-year sea ice on the Mackenzie Shelf (western Canadian Arctic)

ABSTRACT: The sinking export of particulate material under landfast first-year sea ice was studied from the winter period to spring melt on the Mackenzie Shelf, western Canadian Arctic. Short-term particle interceptor traps were deployed at 1, 15, and 25 m under the ice on 16 consecutive occasions f...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:Marine Ecology Progress Series. - Inter-Research, 1979. - 353(2008) vom: Jan., Seite 13-25
1. Verfasser: Juul-Pedersen, Thomas (VerfasserIn)
Weitere Verfasser: Michel, Christine, Gosselin, Michel, Seuthe, Lena
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Marine Ecology Progress Series
Schlagworte:Arctic Sea ice Sedimentation Sea ice-water coupling Organic material Carbon flux Ice algae Biogenic silica Physical sciences Applied sciences mehr... Biological sciences Environmental studies
LEADER 01000caa a22002652 4500
001 JST114411190
003 DE-627
005 20240625021514.0
007 cr uuu---uuuuu
008 180606s2008 xx |||||o 00| ||eng c
035 |a (DE-627)JST114411190 
035 |a (JST)24871879 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Juul-Pedersen, Thomas  |e verfasserin  |4 aut 
245 1 0 |a Seasonal changes in the sinking export of particulate material under first-year sea ice on the Mackenzie Shelf (western Canadian Arctic) 
264 1 |c 2008 
336 |a Text  |b txt  |2 rdacontent 
337 |a Computermedien  |b c  |2 rdamedia 
338 |a Online-Ressource  |b cr  |2 rdacarrier 
520 |a ABSTRACT: The sinking export of particulate material under landfast first-year sea ice was studied from the winter period to spring melt on the Mackenzie Shelf, western Canadian Arctic. Short-term particle interceptor traps were deployed at 1, 15, and 25 m under the ice on 16 consecutive occasions from 23 February to 20 June 2004. The sinking material was analyzed for chlorophyll (chl)a, phaeopigments, total particulate carbon (TPC), particulate organic carbon and nitrogen (POC and PON), and biogenic silica (BioSi). The sinking fluxes of chlaand BioSi increased steadily after 19 March and until the onset of spring melt (26 May), after which they increased considerably. The contribution of large algae (>5 μm) to the total chlasinking flux also increased after 19 March, reflecting an increasing contribution of diatoms to the sinking export of algal material. Accordingly, chlasinking fluxes at 1 m showed a significant linear relationship with bottom ice chlabiomass. On average, 46% of the chlaexported at 1 m was lost in the upper 25 m. POC was the main component of the TPC sinking fluxes throughout the study. POC sinking fluxes remained fairly stable until the onset of spring melt, after which a considerable increase was observed. High POC:chlaratios indicated a significant contribution of non-algal material to the sinking POC. The daily sinking loss rate of chla, POC, and PON from the sea ice and interfacial layer (top 1 m of the water column) varied seasonally and was highest during the winter period. Our results illustrate the continuous downward sinking export of organic material under landfast ice, from winter throughout late spring. 
540 |a © Inter-Research 2008 
650 4 |a Arctic 
650 4 |a Sea ice 
650 4 |a Sedimentation 
650 4 |a Sea ice-water coupling 
650 4 |a Organic material 
650 4 |a Carbon flux 
650 4 |a Ice algae 
650 4 |a Biogenic silica 
650 4 |a Physical sciences  |x Earth sciences  |x Hydrology  |x Water  |x Ice  |x Sea ice 
650 4 |a Applied sciences  |x Materials science  |x Materials  |x Particulate matter 
650 4 |a Biological sciences  |x Ecology  |x Biomass 
650 4 |a Biological sciences  |x Biology  |x Botany  |x Marine botany  |x Phycology  |x Algae 
650 4 |a Environmental studies  |x Atmospheric sciences  |x Climatology  |x Seasons  |x Winter 
650 4 |a Applied sciences  |x Materials science  |x Materials  |x Organic materials 
650 4 |a Physical sciences  |x Earth sciences  |x Geography  |x Geomorphology  |x Bodies of water  |x Seas 
650 4 |a Physical sciences  |x Earth sciences  |x Geography  |x Geomorphology  |x Bodies of water  |x Oceans 
650 4 |a Biological sciences  |x Biology  |x Botany  |x Marine botany  |x Phycology  |x Algae  |x Diatoms 
650 4 |a Physical sciences  |x Earth sciences  |x Hydrology  |x Water  |x Saltwater  |x Sea water 
655 4 |a research-article 
700 1 |a Michel, Christine  |e verfasserin  |4 aut 
700 1 |a Gosselin, Michel  |e verfasserin  |4 aut 
700 1 |a Seuthe, Lena  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Marine Ecology Progress Series  |d Inter-Research, 1979  |g 353(2008) vom: Jan., Seite 13-25  |w (DE-627)320617998  |w (DE-600)2022265-8  |x 16161599  |7 nnns 
773 1 8 |g volume:353  |g year:2008  |g month:01  |g pages:13-25 
856 4 0 |u https://www.jstor.org/stable/24871879  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_JST 
912 |a GBV_ILN_11 
912 |a GBV_ILN_20 
912 |a GBV_ILN_22 
912 |a GBV_ILN_23 
912 |a GBV_ILN_24 
912 |a GBV_ILN_31 
912 |a GBV_ILN_39 
912 |a GBV_ILN_40 
912 |a GBV_ILN_60 
912 |a GBV_ILN_62 
912 |a GBV_ILN_63 
912 |a GBV_ILN_65 
912 |a GBV_ILN_69 
912 |a GBV_ILN_70 
912 |a GBV_ILN_73 
912 |a GBV_ILN_74 
912 |a GBV_ILN_95 
912 |a GBV_ILN_100 
912 |a GBV_ILN_101 
912 |a GBV_ILN_105 
912 |a GBV_ILN_110 
912 |a GBV_ILN_120 
912 |a GBV_ILN_151 
912 |a GBV_ILN_161 
912 |a GBV_ILN_170 
912 |a GBV_ILN_213 
912 |a GBV_ILN_230 
912 |a GBV_ILN_285 
912 |a GBV_ILN_293 
912 |a GBV_ILN_370 
912 |a GBV_ILN_374 
912 |a GBV_ILN_381 
912 |a GBV_ILN_602 
912 |a GBV_ILN_647 
912 |a GBV_ILN_2001 
912 |a GBV_ILN_2003 
912 |a GBV_ILN_2005 
912 |a GBV_ILN_2006 
912 |a GBV_ILN_2008 
912 |a GBV_ILN_2009 
912 |a GBV_ILN_2010 
912 |a GBV_ILN_2014 
912 |a GBV_ILN_2015 
912 |a GBV_ILN_2018 
912 |a GBV_ILN_2020 
912 |a GBV_ILN_2021 
912 |a GBV_ILN_2026 
912 |a GBV_ILN_2027 
912 |a GBV_ILN_2044 
912 |a GBV_ILN_2050 
912 |a GBV_ILN_2056 
912 |a GBV_ILN_2057 
912 |a GBV_ILN_2061 
912 |a GBV_ILN_2107 
912 |a GBV_ILN_2360 
912 |a GBV_ILN_2949 
912 |a GBV_ILN_2950 
912 |a GBV_ILN_4012 
912 |a GBV_ILN_4035 
912 |a GBV_ILN_4037 
912 |a GBV_ILN_4046 
912 |a GBV_ILN_4112 
912 |a GBV_ILN_4125 
912 |a GBV_ILN_4126 
912 |a GBV_ILN_4242 
912 |a GBV_ILN_4249 
912 |a GBV_ILN_4251 
912 |a GBV_ILN_4305 
912 |a GBV_ILN_4306 
912 |a GBV_ILN_4307 
912 |a GBV_ILN_4313 
912 |a GBV_ILN_4322 
912 |a GBV_ILN_4323 
912 |a GBV_ILN_4324 
912 |a GBV_ILN_4325 
912 |a GBV_ILN_4335 
912 |a GBV_ILN_4338 
912 |a GBV_ILN_4346 
912 |a GBV_ILN_4367 
912 |a GBV_ILN_4393 
912 |a GBV_ILN_4700 
951 |a AR 
952 |d 353  |j 2008  |c 01  |h 13-25