Biogeochemical measurements at the Antarctic Peninsula
Size-fractionated chlorophyll a and photosynthetic carbon incorporation, microbial oxygen production and respiration and particulate vertical flux were measured in January 1996 at three regions, characterized by distinct hydrographic fields and planktonic communities, of the Antarctic Peninsula: (1)...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.758047 2023-05-15T13:42:10+02:00 Biogeochemical measurements at the Antarctic Peninsula Serret, Pablo Fernández, Emilio Anadón, Ricardo Varela, Manuel MEDIAN LATITUDE: -64.187450 * MEDIAN LONGITUDE: -61.990400 * SOUTH-BOUND LATITUDE: -64.831400 * WEST-BOUND LONGITUDE: -63.205800 * NORTH-BOUND LATITUDE: -63.402500 * EAST-BOUND LONGITUDE: -60.714700 * DATE/TIME START: 1995-12-26T02:00:00 * DATE/TIME END: 1996-01-04T02:43:00 2001-03-07 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.758047 https://doi.org/10.1594/PANGAEA.758047 en eng PANGAEA Anadón, Ricardo; Estrada, Marta (1996): FRUELA cruises data base. University de Oviedo, Oviedo, Spain; Instituto de Ciencias del Mar-SCIC, Barcelona, Spain, hdl:10013/epic.36969.d001 https://doi.pangaea.de/10.1594/PANGAEA.758047 https://doi.org/10.1594/PANGAEA.758047 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Serret, Pablo; Fernández, Emilio; Anadón, Ricardo; Varela, Manuel (2001): Trophic control of biogenic carbon export in Bransfield and Gerlache Straits, Antarctica. Journal of Plankton Research, 23(12), 1345-1360, https://doi.org/10.1093/plankt/23.12.1345 CTD/Rosette CTD-RO Fruela95 Fruela95_168 Fruela95_169 Fruela95_178 Fruela95_184 he31_191 he31_197 he31_216 he31_227 Hespérides JGOFS Joint Global Ocean Flux Study Dataset 2001 ftpangaea https://doi.org/10.1594/PANGAEA.758047 https://doi.org/10.1093/plankt/23.12.1345 2023-01-20T07:32:05Z Size-fractionated chlorophyll a and photosynthetic carbon incorporation, microbial oxygen production and respiration and particulate vertical flux were measured in January 1996 at three regions, characterized by distinct hydrographic fields and planktonic communities, of the Antarctic Peninsula: (1) a diatom-Phaeocystis sp., dominated community associated with the relatively stratified waters of the Gerlache Strait, (2) a nanoplankton-Cryptomonas sp. dominated assemblage at the Gerlache-Bransfield confluence; and (3) a nano- and picoplankton community in mixed waters of the Bransfield Strait. Despite the marked differences in both community structure and total phytoplankton biomass and primary production, and against predictions from models about trophic control of C export, the lowest respiration rates were measured at Bransfield (pico- and nanoplankton), and no difference was observed between the Gerlache (large diatoms) and Bransfield stations in relative vertical particle flux (6.4 vs. 5.1 % of suspended C; 14.9 vs. 10.4 % of net community production, respectively). Growth and loss rates of the phytoplankton population studied for each community indicate that microbial populations can be explained by in situ growth, but spatial (diatom-Phaeocystis sp., bloom) and temporal (diatom-Phaeocystis sp. bloom and nanoplankton communities) scales of study were shown to be insufficient for addressing the coupling between primary production and biogenic carbon export, especially after the appreciation of the accumulation of dissolved organic carbon in the water column. This would explain the unexpected results and highlights the necessity of including the mechanisms controlling accumulation and consumption of dissolved organic matter into conceptual models about the trophic control of C export. Dataset Antarc* Antarctic Antarctic Peninsula Antarctica Journal Bransfield Strait PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Antarctic Peninsula Bransfield Strait Gerlache ENVELOPE(99.033,99.033,-66.500,-66.500) Gerlache Strait ENVELOPE(-62.333,-62.333,-64.500,-64.500) The Antarctic ENVELOPE(-63.205800,-60.714700,-63.402500,-64.831400) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
CTD/Rosette CTD-RO Fruela95 Fruela95_168 Fruela95_169 Fruela95_178 Fruela95_184 he31_191 he31_197 he31_216 he31_227 Hespérides JGOFS Joint Global Ocean Flux Study |
spellingShingle |
CTD/Rosette CTD-RO Fruela95 Fruela95_168 Fruela95_169 Fruela95_178 Fruela95_184 he31_191 he31_197 he31_216 he31_227 Hespérides JGOFS Joint Global Ocean Flux Study Serret, Pablo Fernández, Emilio Anadón, Ricardo Varela, Manuel Biogeochemical measurements at the Antarctic Peninsula |
topic_facet |
CTD/Rosette CTD-RO Fruela95 Fruela95_168 Fruela95_169 Fruela95_178 Fruela95_184 he31_191 he31_197 he31_216 he31_227 Hespérides JGOFS Joint Global Ocean Flux Study |
description |
Size-fractionated chlorophyll a and photosynthetic carbon incorporation, microbial oxygen production and respiration and particulate vertical flux were measured in January 1996 at three regions, characterized by distinct hydrographic fields and planktonic communities, of the Antarctic Peninsula: (1) a diatom-Phaeocystis sp., dominated community associated with the relatively stratified waters of the Gerlache Strait, (2) a nanoplankton-Cryptomonas sp. dominated assemblage at the Gerlache-Bransfield confluence; and (3) a nano- and picoplankton community in mixed waters of the Bransfield Strait. Despite the marked differences in both community structure and total phytoplankton biomass and primary production, and against predictions from models about trophic control of C export, the lowest respiration rates were measured at Bransfield (pico- and nanoplankton), and no difference was observed between the Gerlache (large diatoms) and Bransfield stations in relative vertical particle flux (6.4 vs. 5.1 % of suspended C; 14.9 vs. 10.4 % of net community production, respectively). Growth and loss rates of the phytoplankton population studied for each community indicate that microbial populations can be explained by in situ growth, but spatial (diatom-Phaeocystis sp., bloom) and temporal (diatom-Phaeocystis sp. bloom and nanoplankton communities) scales of study were shown to be insufficient for addressing the coupling between primary production and biogenic carbon export, especially after the appreciation of the accumulation of dissolved organic carbon in the water column. This would explain the unexpected results and highlights the necessity of including the mechanisms controlling accumulation and consumption of dissolved organic matter into conceptual models about the trophic control of C export. |
format |
Dataset |
author |
Serret, Pablo Fernández, Emilio Anadón, Ricardo Varela, Manuel |
author_facet |
Serret, Pablo Fernández, Emilio Anadón, Ricardo Varela, Manuel |
author_sort |
Serret, Pablo |
title |
Biogeochemical measurements at the Antarctic Peninsula |
title_short |
Biogeochemical measurements at the Antarctic Peninsula |
title_full |
Biogeochemical measurements at the Antarctic Peninsula |
title_fullStr |
Biogeochemical measurements at the Antarctic Peninsula |
title_full_unstemmed |
Biogeochemical measurements at the Antarctic Peninsula |
title_sort |
biogeochemical measurements at the antarctic peninsula |
publisher |
PANGAEA |
publishDate |
2001 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.758047 https://doi.org/10.1594/PANGAEA.758047 |
op_coverage |
MEDIAN LATITUDE: -64.187450 * MEDIAN LONGITUDE: -61.990400 * SOUTH-BOUND LATITUDE: -64.831400 * WEST-BOUND LONGITUDE: -63.205800 * NORTH-BOUND LATITUDE: -63.402500 * EAST-BOUND LONGITUDE: -60.714700 * DATE/TIME START: 1995-12-26T02:00:00 * DATE/TIME END: 1996-01-04T02:43:00 |
long_lat |
ENVELOPE(99.033,99.033,-66.500,-66.500) ENVELOPE(-62.333,-62.333,-64.500,-64.500) ENVELOPE(-63.205800,-60.714700,-63.402500,-64.831400) |
geographic |
Antarctic Antarctic Peninsula Bransfield Strait Gerlache Gerlache Strait The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Bransfield Strait Gerlache Gerlache Strait The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Journal Bransfield Strait |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Journal Bransfield Strait |
op_source |
Supplement to: Serret, Pablo; Fernández, Emilio; Anadón, Ricardo; Varela, Manuel (2001): Trophic control of biogenic carbon export in Bransfield and Gerlache Straits, Antarctica. Journal of Plankton Research, 23(12), 1345-1360, https://doi.org/10.1093/plankt/23.12.1345 |
op_relation |
Anadón, Ricardo; Estrada, Marta (1996): FRUELA cruises data base. University de Oviedo, Oviedo, Spain; Instituto de Ciencias del Mar-SCIC, Barcelona, Spain, hdl:10013/epic.36969.d001 https://doi.pangaea.de/10.1594/PANGAEA.758047 https://doi.org/10.1594/PANGAEA.758047 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.758047 https://doi.org/10.1093/plankt/23.12.1345 |
_version_ |
1766163993327566848 |