Denitrification rates in boreo-arctic sponges - data of sponge species from Korsfjord (Norway) and the Schulz Bank (Arctic Ocean)
Sponges are commonly known as general nutrient providers for the marine ecosystem, recycling organic matter into various forms of bio-available nutrients such as ammonium and nitrate. In this study we challenge this view. We show that nutrient removal through microbial denitrification is a common fe...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.899821 2023-05-15T14:26:12+02:00 Denitrification rates in boreo-arctic sponges - data of sponge species from Korsfjord (Norway) and the Schulz Bank (Arctic Ocean) Rooks, Christine Fang, James Kar-Hei Mørkved, Pål Tore Zhao, Rui Rapp, Hans Tore Xavier, Joana R Hoffmann, Friederike MEDIAN LATITUDE: 66.993315 * MEDIAN LONGITUDE: 6.357225 * SOUTH-BOUND LATITUDE: 60.153330 * WEST-BOUND LONGITUDE: 5.147780 * NORTH-BOUND LATITUDE: 73.833300 * EAST-BOUND LONGITUDE: 7.566670 2019-03-31 text/tab-separated-values, 6 data points https://doi.pangaea.de/10.1594/PANGAEA.899821 https://doi.org/10.1594/PANGAEA.899821 en eng PANGAEA Rooks, Christine; Fang, James Kar-Hei; Mørkved, Pål Tore; Zhao, Rui; Rapp, Hans Tore; Xavier, Joana R; Hoffmann, Friederike (2020): Deep-sea sponge grounds as nutrient sinks: denitrification is common in boreo-Arctic sponges. Biogeosciences, 17, 1231-1245, https://doi.org/10.5194/bg-17-1231-2020 https://doi.pangaea.de/10.1594/PANGAEA.899821 https://doi.org/10.1594/PANGAEA.899821 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Arctic Ocean Deep-sea Sponge Grounds Ecosystems of the North Atlantic Event label File content File type Korsfjord Latitude of event Longitude of event MULT Multiple investigations Norway Schulz_bank SponGES Uniform resource locator/link to file Dataset 2019 ftpangaea https://doi.org/10.1594/PANGAEA.899821 https://doi.org/10.5194/bg-17-1231-2020 2023-01-20T09:12:12Z Sponges are commonly known as general nutrient providers for the marine ecosystem, recycling organic matter into various forms of bio-available nutrients such as ammonium and nitrate. In this study we challenge this view. We show that nutrient removal through microbial denitrification is a common feature in six cold-water sponge species from boreal and Arctic sponge grounds. Denitrification rates were quantified by incubating sponge tissue sections with 15NO3- - amended oxygen saturated seawater, mimicking conditions in pumping sponges, and de-oxygenated seawater, mimicking non-pumping sponges. Rates of anaerobic ammonium oxidation (anammox) using incubations with 15NH4+ could not be detected. Denitrification rates of the different sponge species ranged from 0 to 97 nmol N cm-3 sponge day-1 under oxic conditions, and from 24 to 279 nmol N cm-3 sponge day-1 under anoxic conditions. A positive relationship between the highest potential rates of denitrification (in the absence of oxygen) and the species-specific abundances of nirS and nirK genes encoding nitrite reductase, a key enzyme for denitrification, suggests that the denitrifying community in these sponge species is active and prepared for denitrification. The lack of a lag phase in the linear accumulation of the 15N labelled N2 gas in any of our tissue incubations is another indicator for an active community of denitrifiers in the investigated sponge species. Low rates for coupled nitrification-denitrification indicate that also under oxic conditions, nitrate to fuel denitrification rates was derived rather from the ambient sea-water than from sponge nitrification. The lack of nifH genes encoding nitrogenase, the key enzyme for nitrogen fixation, shows that the nitrogen cycle is not closed in the sponge grounds. The denitrified nitrogen, no matter of its origin, is then no longer available as a nutrient for the marine ecosystem. These results reveal the following scenario for the potential denitrification capacity of sponge grounds based on typical sponge ... Dataset Arctic Arctic Arctic Ocean North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Norway Schulz Bank ENVELOPE(7.500,7.500,73.867,73.867) ENVELOPE(5.147780,7.566670,73.833300,60.153330) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Arctic Ocean Deep-sea Sponge Grounds Ecosystems of the North Atlantic Event label File content File type Korsfjord Latitude of event Longitude of event MULT Multiple investigations Norway Schulz_bank SponGES Uniform resource locator/link to file |
spellingShingle |
Arctic Ocean Deep-sea Sponge Grounds Ecosystems of the North Atlantic Event label File content File type Korsfjord Latitude of event Longitude of event MULT Multiple investigations Norway Schulz_bank SponGES Uniform resource locator/link to file Rooks, Christine Fang, James Kar-Hei Mørkved, Pål Tore Zhao, Rui Rapp, Hans Tore Xavier, Joana R Hoffmann, Friederike Denitrification rates in boreo-arctic sponges - data of sponge species from Korsfjord (Norway) and the Schulz Bank (Arctic Ocean) |
topic_facet |
Arctic Ocean Deep-sea Sponge Grounds Ecosystems of the North Atlantic Event label File content File type Korsfjord Latitude of event Longitude of event MULT Multiple investigations Norway Schulz_bank SponGES Uniform resource locator/link to file |
description |
Sponges are commonly known as general nutrient providers for the marine ecosystem, recycling organic matter into various forms of bio-available nutrients such as ammonium and nitrate. In this study we challenge this view. We show that nutrient removal through microbial denitrification is a common feature in six cold-water sponge species from boreal and Arctic sponge grounds. Denitrification rates were quantified by incubating sponge tissue sections with 15NO3- - amended oxygen saturated seawater, mimicking conditions in pumping sponges, and de-oxygenated seawater, mimicking non-pumping sponges. Rates of anaerobic ammonium oxidation (anammox) using incubations with 15NH4+ could not be detected. Denitrification rates of the different sponge species ranged from 0 to 97 nmol N cm-3 sponge day-1 under oxic conditions, and from 24 to 279 nmol N cm-3 sponge day-1 under anoxic conditions. A positive relationship between the highest potential rates of denitrification (in the absence of oxygen) and the species-specific abundances of nirS and nirK genes encoding nitrite reductase, a key enzyme for denitrification, suggests that the denitrifying community in these sponge species is active and prepared for denitrification. The lack of a lag phase in the linear accumulation of the 15N labelled N2 gas in any of our tissue incubations is another indicator for an active community of denitrifiers in the investigated sponge species. Low rates for coupled nitrification-denitrification indicate that also under oxic conditions, nitrate to fuel denitrification rates was derived rather from the ambient sea-water than from sponge nitrification. The lack of nifH genes encoding nitrogenase, the key enzyme for nitrogen fixation, shows that the nitrogen cycle is not closed in the sponge grounds. The denitrified nitrogen, no matter of its origin, is then no longer available as a nutrient for the marine ecosystem. These results reveal the following scenario for the potential denitrification capacity of sponge grounds based on typical sponge ... |
format |
Dataset |
author |
Rooks, Christine Fang, James Kar-Hei Mørkved, Pål Tore Zhao, Rui Rapp, Hans Tore Xavier, Joana R Hoffmann, Friederike |
author_facet |
Rooks, Christine Fang, James Kar-Hei Mørkved, Pål Tore Zhao, Rui Rapp, Hans Tore Xavier, Joana R Hoffmann, Friederike |
author_sort |
Rooks, Christine |
title |
Denitrification rates in boreo-arctic sponges - data of sponge species from Korsfjord (Norway) and the Schulz Bank (Arctic Ocean) |
title_short |
Denitrification rates in boreo-arctic sponges - data of sponge species from Korsfjord (Norway) and the Schulz Bank (Arctic Ocean) |
title_full |
Denitrification rates in boreo-arctic sponges - data of sponge species from Korsfjord (Norway) and the Schulz Bank (Arctic Ocean) |
title_fullStr |
Denitrification rates in boreo-arctic sponges - data of sponge species from Korsfjord (Norway) and the Schulz Bank (Arctic Ocean) |
title_full_unstemmed |
Denitrification rates in boreo-arctic sponges - data of sponge species from Korsfjord (Norway) and the Schulz Bank (Arctic Ocean) |
title_sort |
denitrification rates in boreo-arctic sponges - data of sponge species from korsfjord (norway) and the schulz bank (arctic ocean) |
publisher |
PANGAEA |
publishDate |
2019 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.899821 https://doi.org/10.1594/PANGAEA.899821 |
op_coverage |
MEDIAN LATITUDE: 66.993315 * MEDIAN LONGITUDE: 6.357225 * SOUTH-BOUND LATITUDE: 60.153330 * WEST-BOUND LONGITUDE: 5.147780 * NORTH-BOUND LATITUDE: 73.833300 * EAST-BOUND LONGITUDE: 7.566670 |
long_lat |
ENVELOPE(7.500,7.500,73.867,73.867) ENVELOPE(5.147780,7.566670,73.833300,60.153330) |
geographic |
Arctic Arctic Ocean Norway Schulz Bank |
geographic_facet |
Arctic Arctic Ocean Norway Schulz Bank |
genre |
Arctic Arctic Arctic Ocean North Atlantic |
genre_facet |
Arctic Arctic Arctic Ocean North Atlantic |
op_relation |
Rooks, Christine; Fang, James Kar-Hei; Mørkved, Pål Tore; Zhao, Rui; Rapp, Hans Tore; Xavier, Joana R; Hoffmann, Friederike (2020): Deep-sea sponge grounds as nutrient sinks: denitrification is common in boreo-Arctic sponges. Biogeosciences, 17, 1231-1245, https://doi.org/10.5194/bg-17-1231-2020 https://doi.pangaea.de/10.1594/PANGAEA.899821 https://doi.org/10.1594/PANGAEA.899821 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.899821 https://doi.org/10.5194/bg-17-1231-2020 |
_version_ |
1766298674095194112 |