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Benthic O2 uptake by coral gardens at the Condor seamount (Azores)

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Benthic O2 uptake by coral gardens at the Condor seamount (Azores)

DOI: 10.3354/meps14021

Type: Publication

Year: 2022

Citations: 6

AZORES DEEP-SEA RESEARCH
Publication Open access February 2022

Benthic O2 uptake by coral gardens at the Condor seamount (Azores)

Marine Ecology Progress Series

10.3354/meps14021
Open DOI
Total authors
10
Involved team members
3
Citations
6
References
61

Citations by year

4 years
2025
1
2024
1
2023
2
2022
2

Related to this work

ATLAS CoralFISH MERCES MIDAS MIDAS 2016

Abstract

Using the non-invasive aquatic eddy covariance technique, we provide the first oxygen (O 2 ) uptake rates from within coral gardens at the Condor seamount (Azores). To explore some of the key drivers of the benthic O 2 demand, we obtained benthic images, quantified local hydrodynamics, and estimated phototrophic biomass and deposition dynamics with a long-term moored sediment trap. The coral gardens were dominated by the octocorals Viminella flagellum and Dentomuricea aff. meteor . Daily rates of O 2 uptake within 3 targeted coral garden sites (203 to 206 m depth) ranged from 10.0 ± 0.88 to 18.8 ± 2.0 mmol m -2 d -1 (mean ± SE) and were up to 10 times higher than 2 local sandy reference sites within the seamount summit area. The overall mean O 2 uptake rate for the garden (13.4 mmol m -2 d -1 ) was twice the global mean for sedimentary habitats at comparable depths. Combined with parallel ex situ incubations, the results suggest that the octocorals might contribute just ~5% of the observed O 2 uptake rates. Deposition of particulate organic matter (POM) assessed by the sediment trap accounted for less than 10% of the O 2 demand of the coral garden, implying a substantial POM supply circumventing the deployed traps. Our results expand the database for carbon turnover rates in cold-water coral habitats by including the first estimates from these largely understudied coral gardens.

Authors

3 involved team members
L
L Rovelli
0000-0003-4011-7484

iES - Institute for Environmental Sciences, University of Koblenz-Landau, 76829 Landau, Germany

+1 more

K
Km Attard
0000-0002-8009-5462

Danish Institute of Advanced Study -DIAS, University of Southern Denmark, 5230 Odense M, Denmark

+3 more

M
M Rakka
0000-0002-8179-242X

Instituto de Investigação em Ciências do Mar - Okeanos, Universidade dos Açores, 9901-862 Horta, Portugal

+1 more

M
M Bilan
0000-0002-5447-4370

Instituto de Investigação em Ciências do Mar - Okeanos, Universidade dos Açores, 9901-862 Horta, Portugal

+1 more

S
S Blackbird
0000-0003-0942-6836

School of Environmental Sciences, University of Liverpool, L69 3GP Liverpool, UK

T Morato
T Morato Team member
0000-0003-2393-4773

Instituto de Investigação em Ciências do Mar - Okeanos, Universidade dos Açores, 9901-862 Horta, Portugal

+1 more

G
Ga Wolff
0000-0002-9380-1039

School of Environmental Sciences, University of Liverpool, L69 3GP Liverpool, UK

R
Rn Glud
0000-0002-7069-893X

HADAL & Nordcee, Department of Biology, University of Southern Denmark, 5230 Odense M, Denmark

+2 more

Record details

Type
article
Language
EN
Volume
688
Pages
19–31
ISSN
0171-8630

Keywords

Seamount Coral Benthic zone Oceanography Geology Geography Fishery Biology

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Governo dos Açores
Oceano Azul
Eurofleets
FCT
FCT Investigador
Governo dos Açores
Portugal 2020
Rolex
RP
RP Ciência
União Europeia

Location

Institute of Marine Sciences — Okeanos, University of the Azores

Departamento de Oceanografia e Pescas — Universidade dos Açores

Rua Prof. Doutor Frederico Machado, No. 4
9901-862 Horta, Portugal

Contact

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