Near seafloor bioluminescence, macrozooplankton and macroparticles at the Mid-Atlantic Ridge

Jessica Craig*, Marsh Youngbluth, Alan J. Jamieson, Imants G. Priede

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The benthic boundary layer is a region often perceived to be high in faunal abundance and biomass. In this study, we investigated the distribution of near seafloor bioluminescent zooplankton (BL), macrozooplankton (>1. cm) and macroparticles (>430. μm) at the Northern Mid-Atlantic Ridge at ca. 2500. m depth.At sites south of 52°N, the Charlie Gibbs Fracture Zone, BL density increased weakly towards the seafloor. This trend was driven by small bioluminescent crustaceans, comprising ca. 90% of the total BL density. Macroparticle density was coherent with BL density, exhibiting a small increase towards the seafloor. Appendicularians (animals as well as occupied and discarded houses) were the most abundant macrozooplankton, and the only group to show a significant increase in density towards the seafloor. The absence of pronounced increases in BL and macroparticle density, and no increase in macrozooplankton (except appendicularians), towards the seafloor do not support the conventional view of high concentrations of particulate organic matter and zooplankton biomass in the benthic boundary layer relative to overlying waters.

Original languageEnglish
Pages (from-to)62-75
Number of pages14
JournalDeep Sea Research Part I: Oceanographic Research Papers
Volume98
DOIs
Publication statusPublished - 1 Apr 2015

Fingerprint

bioluminescence
zooplankton
seafloor
benthic boundary layer
biomass
particulate organic matter
fracture zone
crustacean
Crustacea
animal
animals

Keywords

  • Bathypelagic
  • Benthic boundary layer
  • Bioluminescence
  • Macroparticles
  • Mid-Atlantic ridge
  • Zooplankton

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography

Cite this

Near seafloor bioluminescence, macrozooplankton and macroparticles at the Mid-Atlantic Ridge. / Craig, Jessica; Youngbluth, Marsh; Jamieson, Alan J.; Priede, Imants G.

In: Deep Sea Research Part I: Oceanographic Research Papers, Vol. 98, 01.04.2015, p. 62-75.

Research output: Contribution to journalArticle

Craig, Jessica ; Youngbluth, Marsh ; Jamieson, Alan J. ; Priede, Imants G. / Near seafloor bioluminescence, macrozooplankton and macroparticles at the Mid-Atlantic Ridge. In: Deep Sea Research Part I: Oceanographic Research Papers. 2015 ; Vol. 98. pp. 62-75.
@article{f7a00e29e3b5424d8a7865604030725d,
title = "Near seafloor bioluminescence, macrozooplankton and macroparticles at the Mid-Atlantic Ridge",
abstract = "The benthic boundary layer is a region often perceived to be high in faunal abundance and biomass. In this study, we investigated the distribution of near seafloor bioluminescent zooplankton (BL), macrozooplankton (>1. cm) and macroparticles (>430. μm) at the Northern Mid-Atlantic Ridge at ca. 2500. m depth.At sites south of 52°N, the Charlie Gibbs Fracture Zone, BL density increased weakly towards the seafloor. This trend was driven by small bioluminescent crustaceans, comprising ca. 90{\%} of the total BL density. Macroparticle density was coherent with BL density, exhibiting a small increase towards the seafloor. Appendicularians (animals as well as occupied and discarded houses) were the most abundant macrozooplankton, and the only group to show a significant increase in density towards the seafloor. The absence of pronounced increases in BL and macroparticle density, and no increase in macrozooplankton (except appendicularians), towards the seafloor do not support the conventional view of high concentrations of particulate organic matter and zooplankton biomass in the benthic boundary layer relative to overlying waters.",
keywords = "Bathypelagic, Benthic boundary layer, Bioluminescence, Macroparticles, Mid-Atlantic ridge, Zooplankton",
author = "Jessica Craig and Marsh Youngbluth and Jamieson, {Alan J.} and Priede, {Imants G.}",
note = "Acknowledgements We thank the captain, crew and company of the RRS James Cook, cruises JC011 and JC048 and the ISIS ROV team at the National Oceanography Centre, Southampton, UK. This work was supported by the NERC Consortium Grant ECOMAR (Ecosystem of the Mid-Atlantic Ridge at the SubPolar Front and Charlie Gibbs Fracture Zone (Grant no. NE/C512961/1). J. Craig was funded by UK NERC studentship (NE/F012020/1).",
year = "2015",
month = "4",
day = "1",
doi = "10.1016/j.dsr.2014.12.011",
language = "English",
volume = "98",
pages = "62--75",
journal = "Deep Sea Research Part I: Oceanographic Research Papers",
issn = "0967-0637",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Near seafloor bioluminescence, macrozooplankton and macroparticles at the Mid-Atlantic Ridge

AU - Craig, Jessica

AU - Youngbluth, Marsh

AU - Jamieson, Alan J.

AU - Priede, Imants G.

N1 - Acknowledgements We thank the captain, crew and company of the RRS James Cook, cruises JC011 and JC048 and the ISIS ROV team at the National Oceanography Centre, Southampton, UK. This work was supported by the NERC Consortium Grant ECOMAR (Ecosystem of the Mid-Atlantic Ridge at the SubPolar Front and Charlie Gibbs Fracture Zone (Grant no. NE/C512961/1). J. Craig was funded by UK NERC studentship (NE/F012020/1).

PY - 2015/4/1

Y1 - 2015/4/1

N2 - The benthic boundary layer is a region often perceived to be high in faunal abundance and biomass. In this study, we investigated the distribution of near seafloor bioluminescent zooplankton (BL), macrozooplankton (>1. cm) and macroparticles (>430. μm) at the Northern Mid-Atlantic Ridge at ca. 2500. m depth.At sites south of 52°N, the Charlie Gibbs Fracture Zone, BL density increased weakly towards the seafloor. This trend was driven by small bioluminescent crustaceans, comprising ca. 90% of the total BL density. Macroparticle density was coherent with BL density, exhibiting a small increase towards the seafloor. Appendicularians (animals as well as occupied and discarded houses) were the most abundant macrozooplankton, and the only group to show a significant increase in density towards the seafloor. The absence of pronounced increases in BL and macroparticle density, and no increase in macrozooplankton (except appendicularians), towards the seafloor do not support the conventional view of high concentrations of particulate organic matter and zooplankton biomass in the benthic boundary layer relative to overlying waters.

AB - The benthic boundary layer is a region often perceived to be high in faunal abundance and biomass. In this study, we investigated the distribution of near seafloor bioluminescent zooplankton (BL), macrozooplankton (>1. cm) and macroparticles (>430. μm) at the Northern Mid-Atlantic Ridge at ca. 2500. m depth.At sites south of 52°N, the Charlie Gibbs Fracture Zone, BL density increased weakly towards the seafloor. This trend was driven by small bioluminescent crustaceans, comprising ca. 90% of the total BL density. Macroparticle density was coherent with BL density, exhibiting a small increase towards the seafloor. Appendicularians (animals as well as occupied and discarded houses) were the most abundant macrozooplankton, and the only group to show a significant increase in density towards the seafloor. The absence of pronounced increases in BL and macroparticle density, and no increase in macrozooplankton (except appendicularians), towards the seafloor do not support the conventional view of high concentrations of particulate organic matter and zooplankton biomass in the benthic boundary layer relative to overlying waters.

KW - Bathypelagic

KW - Benthic boundary layer

KW - Bioluminescence

KW - Macroparticles

KW - Mid-Atlantic ridge

KW - Zooplankton

UR - http://www.scopus.com/inward/record.url?scp=84922042288&partnerID=8YFLogxK

U2 - 10.1016/j.dsr.2014.12.011

DO - 10.1016/j.dsr.2014.12.011

M3 - Article

AN - SCOPUS:84922042288

VL - 98

SP - 62

EP - 75

JO - Deep Sea Research Part I: Oceanographic Research Papers

JF - Deep Sea Research Part I: Oceanographic Research Papers

SN - 0967-0637

ER -