BENTHIC-PELAGIC COUPLING IN THE GREENLAND NORWEGIAN SEA AND ITS EFFECT ON THE GEOLOGICAL RECORD

G GRAF*, SA GERLACH, W RITZRAU, A SCHELTZ, P LINKE, L THOMSEN, W QUEISSER, U WITTE

*Corresponding author for this work

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

The sedimentation pattern of organic material in the Greenland-Nonvegian Sea is reflected in the surface sediments, although less than 0.5% of the organic matter is buried in the sediment. Maximum fluxes and benthic responses are observed during June and/or August/September, following the pattern of export production in the pelagial zone. The annual remineralization rate on the Voring Plateau is 3.0 g C m(-2) a(-1). Freshly settled phytodetritus, as detected by chlorophyll measurements, is rapidly mixed into the sediment and decomposed. It stimulates the activity of benthic organisms, especially foraminifera. The mixing coefficient for this material is D-b = 0.2 cm(2) d(-1), which is two to three orders of magnitude higher than that estimated from radiotracer methods. The effect on the geological record, however, is likely to be small. Chlorophyll-containing particles are at first very evenly distributed on the seafloor. After partial decomposition and resuspension, a secondary redistribution of particles occurs which can result in the formation of a high accumulation area, with an up to 80-fold increase in the sedimentation rate by lateral advection. This is mainly due to physical processes, because biodeposition mediated by benthic animals increases sedimentation by only a factor of two or three.

Original languageEnglish
Pages (from-to)49-58
Number of pages10
JournalInternational Journal of Earth Sciences
Volume84
Issue number1
Publication statusPublished - Feb 1995

Keywords

  • BENTHIC PELAGIC COUPLING
  • GREENLAND NORWEGIAN SEA
  • REMINERALIZATION
  • BIOTURBATION
  • SEDIMENT ACCUMULATION
  • STEREOBALANUS-CANADENSIS SPENGEL
  • VORING-PLATEAU
  • CARBON FLUX
  • SEDIMENTS
  • DEEP
  • MATHEMATICS
  • PARTICLES
  • FLOOR
  • RESUSPENSION
  • FORAMINIFERA

Cite this

BENTHIC-PELAGIC COUPLING IN THE GREENLAND NORWEGIAN SEA AND ITS EFFECT ON THE GEOLOGICAL RECORD. / GRAF, G; GERLACH, SA; RITZRAU, W; SCHELTZ, A; LINKE, P; THOMSEN, L; QUEISSER, W; WITTE, U.

In: International Journal of Earth Sciences, Vol. 84, No. 1, 02.1995, p. 49-58.

Research output: Contribution to journalArticle

GRAF, G, GERLACH, SA, RITZRAU, W, SCHELTZ, A, LINKE, P, THOMSEN, L, QUEISSER, W & WITTE, U 1995, 'BENTHIC-PELAGIC COUPLING IN THE GREENLAND NORWEGIAN SEA AND ITS EFFECT ON THE GEOLOGICAL RECORD', International Journal of Earth Sciences, vol. 84, no. 1, pp. 49-58.
GRAF G, GERLACH SA, RITZRAU W, SCHELTZ A, LINKE P, THOMSEN L et al. BENTHIC-PELAGIC COUPLING IN THE GREENLAND NORWEGIAN SEA AND ITS EFFECT ON THE GEOLOGICAL RECORD. International Journal of Earth Sciences. 1995 Feb;84(1):49-58.
GRAF, G ; GERLACH, SA ; RITZRAU, W ; SCHELTZ, A ; LINKE, P ; THOMSEN, L ; QUEISSER, W ; WITTE, U. / BENTHIC-PELAGIC COUPLING IN THE GREENLAND NORWEGIAN SEA AND ITS EFFECT ON THE GEOLOGICAL RECORD. In: International Journal of Earth Sciences. 1995 ; Vol. 84, No. 1. pp. 49-58.
@article{d1de5d3b64f04d3693ee9bd2291c32d4,
title = "BENTHIC-PELAGIC COUPLING IN THE GREENLAND NORWEGIAN SEA AND ITS EFFECT ON THE GEOLOGICAL RECORD",
abstract = "The sedimentation pattern of organic material in the Greenland-Nonvegian Sea is reflected in the surface sediments, although less than 0.5{\%} of the organic matter is buried in the sediment. Maximum fluxes and benthic responses are observed during June and/or August/September, following the pattern of export production in the pelagial zone. The annual remineralization rate on the Voring Plateau is 3.0 g C m(-2) a(-1). Freshly settled phytodetritus, as detected by chlorophyll measurements, is rapidly mixed into the sediment and decomposed. It stimulates the activity of benthic organisms, especially foraminifera. The mixing coefficient for this material is D-b = 0.2 cm(2) d(-1), which is two to three orders of magnitude higher than that estimated from radiotracer methods. The effect on the geological record, however, is likely to be small. Chlorophyll-containing particles are at first very evenly distributed on the seafloor. After partial decomposition and resuspension, a secondary redistribution of particles occurs which can result in the formation of a high accumulation area, with an up to 80-fold increase in the sedimentation rate by lateral advection. This is mainly due to physical processes, because biodeposition mediated by benthic animals increases sedimentation by only a factor of two or three.",
keywords = "BENTHIC PELAGIC COUPLING, GREENLAND NORWEGIAN SEA, REMINERALIZATION, BIOTURBATION, SEDIMENT ACCUMULATION, STEREOBALANUS-CANADENSIS SPENGEL, VORING-PLATEAU, CARBON FLUX, SEDIMENTS, DEEP, MATHEMATICS, PARTICLES, FLOOR, RESUSPENSION, FORAMINIFERA",
author = "G GRAF and SA GERLACH and W RITZRAU and A SCHELTZ and P LINKE and L THOMSEN and W QUEISSER and U WITTE",
year = "1995",
month = "2",
language = "English",
volume = "84",
pages = "49--58",
journal = "International Journal of Earth Sciences",
issn = "1437-3254",
publisher = "Springer-Verlag",
number = "1",

}

TY - JOUR

T1 - BENTHIC-PELAGIC COUPLING IN THE GREENLAND NORWEGIAN SEA AND ITS EFFECT ON THE GEOLOGICAL RECORD

AU - GRAF, G

AU - GERLACH, SA

AU - RITZRAU, W

AU - SCHELTZ, A

AU - LINKE, P

AU - THOMSEN, L

AU - QUEISSER, W

AU - WITTE, U

PY - 1995/2

Y1 - 1995/2

N2 - The sedimentation pattern of organic material in the Greenland-Nonvegian Sea is reflected in the surface sediments, although less than 0.5% of the organic matter is buried in the sediment. Maximum fluxes and benthic responses are observed during June and/or August/September, following the pattern of export production in the pelagial zone. The annual remineralization rate on the Voring Plateau is 3.0 g C m(-2) a(-1). Freshly settled phytodetritus, as detected by chlorophyll measurements, is rapidly mixed into the sediment and decomposed. It stimulates the activity of benthic organisms, especially foraminifera. The mixing coefficient for this material is D-b = 0.2 cm(2) d(-1), which is two to three orders of magnitude higher than that estimated from radiotracer methods. The effect on the geological record, however, is likely to be small. Chlorophyll-containing particles are at first very evenly distributed on the seafloor. After partial decomposition and resuspension, a secondary redistribution of particles occurs which can result in the formation of a high accumulation area, with an up to 80-fold increase in the sedimentation rate by lateral advection. This is mainly due to physical processes, because biodeposition mediated by benthic animals increases sedimentation by only a factor of two or three.

AB - The sedimentation pattern of organic material in the Greenland-Nonvegian Sea is reflected in the surface sediments, although less than 0.5% of the organic matter is buried in the sediment. Maximum fluxes and benthic responses are observed during June and/or August/September, following the pattern of export production in the pelagial zone. The annual remineralization rate on the Voring Plateau is 3.0 g C m(-2) a(-1). Freshly settled phytodetritus, as detected by chlorophyll measurements, is rapidly mixed into the sediment and decomposed. It stimulates the activity of benthic organisms, especially foraminifera. The mixing coefficient for this material is D-b = 0.2 cm(2) d(-1), which is two to three orders of magnitude higher than that estimated from radiotracer methods. The effect on the geological record, however, is likely to be small. Chlorophyll-containing particles are at first very evenly distributed on the seafloor. After partial decomposition and resuspension, a secondary redistribution of particles occurs which can result in the formation of a high accumulation area, with an up to 80-fold increase in the sedimentation rate by lateral advection. This is mainly due to physical processes, because biodeposition mediated by benthic animals increases sedimentation by only a factor of two or three.

KW - BENTHIC PELAGIC COUPLING

KW - GREENLAND NORWEGIAN SEA

KW - REMINERALIZATION

KW - BIOTURBATION

KW - SEDIMENT ACCUMULATION

KW - STEREOBALANUS-CANADENSIS SPENGEL

KW - VORING-PLATEAU

KW - CARBON FLUX

KW - SEDIMENTS

KW - DEEP

KW - MATHEMATICS

KW - PARTICLES

KW - FLOOR

KW - RESUSPENSION

KW - FORAMINIFERA

M3 - Article

VL - 84

SP - 49

EP - 58

JO - International Journal of Earth Sciences

JF - International Journal of Earth Sciences

SN - 1437-3254

IS - 1

ER -