AN IN-SITU EXPERIMENT TO INVESTIGATE THE DEPLETION OF SESTON ABOVE AN INTERFACE FEEDER FIELD ON THE CONTINENTAL-SLOPE OF THE WESTERN BARENTS SEA

L THOMSEN*, G GRAF, K VONJUTERZENKA, U WITTE

*Corresponding author for this work

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

During 'Meteor' Cruise 17 in July 1991, bottom water and sediment samples were taken from 3 stations on a 3.7 km long transect along the continental slope of the western Barents Sea between 74 degrees 58.3' N, 14 degrees 44.8' E and 74 degrees 59.8' N, 14 degrees 40.1' E, across an area occupied by macrofauna feeding at the sediment-water interface at 1340 m water depth. Profiles of oxygen, total particulate matter, total inorganic matter, particulate organic carbon, bacterial abundance and chlorophyll equivalents were taken in the benthic boundary layer (10 to 40 cm height above the sea floor). Between the upstream and downstream stations total particulate matter and particulate organic carbon decreased by 41 and 23%, respectively, at a height of between 10 and 25 cm above the seabed. Chlorophyll equivalents in the bottom water increased by 85%, in the sediments by 56%. Abundance of macrofauna showed no significant correlation to bottom water and sediment data. Compared to vertical particle fluxes, as determined from sediment trap data, particle fluxes to the sea floor were corrected by a lateral advection factor of 2 to 3.7.

Original languageEnglish
Pages (from-to)295-300
Number of pages6
JournalMarine Ecology Progress Series
Volume123
Issue number1-3
Publication statusPublished - Jul 1995

Keywords

  • EXPERIMENT
  • DEPLETION OF SESTON
  • INTERFACE FEEDER
  • CONTINENTAL SLOPE
  • BARENTS SEA
  • BENTHIC BOUNDARY-LAYER
  • SEDIMENT TRANSPORT
  • RESUSPENSION
  • COMMUNITY
  • DEPOSIT
  • FLOW

Cite this

AN IN-SITU EXPERIMENT TO INVESTIGATE THE DEPLETION OF SESTON ABOVE AN INTERFACE FEEDER FIELD ON THE CONTINENTAL-SLOPE OF THE WESTERN BARENTS SEA. / THOMSEN, L; GRAF, G; VONJUTERZENKA, K; WITTE, U.

In: Marine Ecology Progress Series, Vol. 123, No. 1-3, 07.1995, p. 295-300.

Research output: Contribution to journalArticle

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abstract = "During 'Meteor' Cruise 17 in July 1991, bottom water and sediment samples were taken from 3 stations on a 3.7 km long transect along the continental slope of the western Barents Sea between 74 degrees 58.3' N, 14 degrees 44.8' E and 74 degrees 59.8' N, 14 degrees 40.1' E, across an area occupied by macrofauna feeding at the sediment-water interface at 1340 m water depth. Profiles of oxygen, total particulate matter, total inorganic matter, particulate organic carbon, bacterial abundance and chlorophyll equivalents were taken in the benthic boundary layer (10 to 40 cm height above the sea floor). Between the upstream and downstream stations total particulate matter and particulate organic carbon decreased by 41 and 23{\%}, respectively, at a height of between 10 and 25 cm above the seabed. Chlorophyll equivalents in the bottom water increased by 85{\%}, in the sediments by 56{\%}. Abundance of macrofauna showed no significant correlation to bottom water and sediment data. Compared to vertical particle fluxes, as determined from sediment trap data, particle fluxes to the sea floor were corrected by a lateral advection factor of 2 to 3.7.",
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AB - During 'Meteor' Cruise 17 in July 1991, bottom water and sediment samples were taken from 3 stations on a 3.7 km long transect along the continental slope of the western Barents Sea between 74 degrees 58.3' N, 14 degrees 44.8' E and 74 degrees 59.8' N, 14 degrees 40.1' E, across an area occupied by macrofauna feeding at the sediment-water interface at 1340 m water depth. Profiles of oxygen, total particulate matter, total inorganic matter, particulate organic carbon, bacterial abundance and chlorophyll equivalents were taken in the benthic boundary layer (10 to 40 cm height above the sea floor). Between the upstream and downstream stations total particulate matter and particulate organic carbon decreased by 41 and 23%, respectively, at a height of between 10 and 25 cm above the seabed. Chlorophyll equivalents in the bottom water increased by 85%, in the sediments by 56%. Abundance of macrofauna showed no significant correlation to bottom water and sediment data. Compared to vertical particle fluxes, as determined from sediment trap data, particle fluxes to the sea floor were corrected by a lateral advection factor of 2 to 3.7.

KW - EXPERIMENT

KW - DEPLETION OF SESTON

KW - INTERFACE FEEDER

KW - CONTINENTAL SLOPE

KW - BARENTS SEA

KW - BENTHIC BOUNDARY-LAYER

KW - SEDIMENT TRANSPORT

KW - RESUSPENSION

KW - COMMUNITY

KW - DEPOSIT

KW - FLOW

M3 - Article

VL - 123

SP - 295

EP - 300

JO - Marine Ecology Progress Series

JF - Marine Ecology Progress Series

SN - 0171-8630

IS - 1-3

ER -