Seawater carbonate chemistry and nutrient fluxes during experiments with brittlestar Amphiura filiformis, 2009
Rising levels of atmospheric carbon dioxide and the concomitant increased uptake of this by the oceans is resulting in hypercapnia-related reduction of ocean pH. Research focussed on the direct effects of these physicochemical changes on marine invertebrates has begun to improve our understanding of...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2009
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.736021 https://doi.org/10.1594/PANGAEA.736021 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.736021 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.736021 2023-05-15T17:36:39+02:00 Seawater carbonate chemistry and nutrient fluxes during experiments with brittlestar Amphiura filiformis, 2009 Wood, Hannah Widdicombe, Stephen Spicer, John I 2009-04-01 text/tab-separated-values, 2727 data points https://doi.pangaea.de/10.1594/PANGAEA.736021 https://doi.org/10.1594/PANGAEA.736021 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.736021 https://doi.org/10.1594/PANGAEA.736021 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Wood, Hannah; Widdicombe, Stephen; Spicer, John I (2009): The influence of hypercapnia and the infaunal brittlestar Amphiura filiformis on sediment nutrient flux – will ocean acidification affect nutrient exchange? Biogeosciences, 6(10), 2015-2024, https://doi.org/10.5194/bg-6-2015-2009 Alkalinity total standard deviation Ammonium flux Amphiura filiformis Animalia Benthic animals Benthos Carbon inorganic dissolved Coast and continental shelf Containers and aquaria (20-1000 L or < 1 m**2) Echinodermata EPOCA EUR-OCEANS European network of excellence for Ocean Ecosystems Analysis European Project on Ocean Acidification Experimental treatment Experiment day Laboratory experiment Multi meter WTW LF 197 Nitrate Nitrite North Atlantic Nutrient autoanalyzer (Bran and Luebbe AAIII) OA-ICC Ocean Acidification International Coordination Centre Other studied parameter or process pH pH meter (Mettler Toledo USA) Phosphate Salinity Silicate Single species Temperate Temperature Dataset 2009 ftpangaea https://doi.org/10.1594/PANGAEA.736021 https://doi.org/10.5194/bg-6-2015-2009 2023-01-20T08:49:54Z Rising levels of atmospheric carbon dioxide and the concomitant increased uptake of this by the oceans is resulting in hypercapnia-related reduction of ocean pH. Research focussed on the direct effects of these physicochemical changes on marine invertebrates has begun to improve our understanding of impacts at the level of individual physiologies. However, CO2-related impairment of organisms' contribution to ecological or ecosystem processes has barely been addressed. The burrowing ophiuroid Amphiura filiformis, which has a physiology that makes it susceptible to reduced pH, plays a key role in sediment nutrient cycling by mixing and irrigating the sediment, a process known as bioturbation. Here we investigate the role of A. filiformis in modifying nutrient flux rates across the sediment-water boundary and the impact of CO2- related acidification on this process. A 40 day exposure study was conducted under predicted pH scenarios from the years 2100 (pH 7.7) and 2300 (pH 7.3), plus an additional treatment of pH 6.8. This study demonstrated strong relationships between A. filiformis density and cycling of some nutrients; activity increases the sediment uptake of phosphate and the release of nitrite and nitrate. No relationship between A. filiformis density and the flux of ammonium or silicate were observed. Results also indicated that, within the timescale of this experiment, effects at the individual bioturbator level appear not to translate into reduced ecosystem influence. However, long term survival of key bioturbating species is far from assured and changes in both bioturbation and microbial processes could alter key biogeochemical processes in future, more acidic oceans. Dataset North Atlantic Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science Toledo ENVELOPE(-67.317,-67.317,-73.700,-73.700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total standard deviation Ammonium flux Amphiura filiformis Animalia Benthic animals Benthos Carbon inorganic dissolved Coast and continental shelf Containers and aquaria (20-1000 L or < 1 m**2) Echinodermata EPOCA EUR-OCEANS European network of excellence for Ocean Ecosystems Analysis European Project on Ocean Acidification Experimental treatment Experiment day Laboratory experiment Multi meter WTW LF 197 Nitrate Nitrite North Atlantic Nutrient autoanalyzer (Bran and Luebbe AAIII) OA-ICC Ocean Acidification International Coordination Centre Other studied parameter or process pH pH meter (Mettler Toledo USA) Phosphate Salinity Silicate Single species Temperate Temperature |
spellingShingle |
Alkalinity total standard deviation Ammonium flux Amphiura filiformis Animalia Benthic animals Benthos Carbon inorganic dissolved Coast and continental shelf Containers and aquaria (20-1000 L or < 1 m**2) Echinodermata EPOCA EUR-OCEANS European network of excellence for Ocean Ecosystems Analysis European Project on Ocean Acidification Experimental treatment Experiment day Laboratory experiment Multi meter WTW LF 197 Nitrate Nitrite North Atlantic Nutrient autoanalyzer (Bran and Luebbe AAIII) OA-ICC Ocean Acidification International Coordination Centre Other studied parameter or process pH pH meter (Mettler Toledo USA) Phosphate Salinity Silicate Single species Temperate Temperature Wood, Hannah Widdicombe, Stephen Spicer, John I Seawater carbonate chemistry and nutrient fluxes during experiments with brittlestar Amphiura filiformis, 2009 |
topic_facet |
Alkalinity total standard deviation Ammonium flux Amphiura filiformis Animalia Benthic animals Benthos Carbon inorganic dissolved Coast and continental shelf Containers and aquaria (20-1000 L or < 1 m**2) Echinodermata EPOCA EUR-OCEANS European network of excellence for Ocean Ecosystems Analysis European Project on Ocean Acidification Experimental treatment Experiment day Laboratory experiment Multi meter WTW LF 197 Nitrate Nitrite North Atlantic Nutrient autoanalyzer (Bran and Luebbe AAIII) OA-ICC Ocean Acidification International Coordination Centre Other studied parameter or process pH pH meter (Mettler Toledo USA) Phosphate Salinity Silicate Single species Temperate Temperature |
description |
Rising levels of atmospheric carbon dioxide and the concomitant increased uptake of this by the oceans is resulting in hypercapnia-related reduction of ocean pH. Research focussed on the direct effects of these physicochemical changes on marine invertebrates has begun to improve our understanding of impacts at the level of individual physiologies. However, CO2-related impairment of organisms' contribution to ecological or ecosystem processes has barely been addressed. The burrowing ophiuroid Amphiura filiformis, which has a physiology that makes it susceptible to reduced pH, plays a key role in sediment nutrient cycling by mixing and irrigating the sediment, a process known as bioturbation. Here we investigate the role of A. filiformis in modifying nutrient flux rates across the sediment-water boundary and the impact of CO2- related acidification on this process. A 40 day exposure study was conducted under predicted pH scenarios from the years 2100 (pH 7.7) and 2300 (pH 7.3), plus an additional treatment of pH 6.8. This study demonstrated strong relationships between A. filiformis density and cycling of some nutrients; activity increases the sediment uptake of phosphate and the release of nitrite and nitrate. No relationship between A. filiformis density and the flux of ammonium or silicate were observed. Results also indicated that, within the timescale of this experiment, effects at the individual bioturbator level appear not to translate into reduced ecosystem influence. However, long term survival of key bioturbating species is far from assured and changes in both bioturbation and microbial processes could alter key biogeochemical processes in future, more acidic oceans. |
format |
Dataset |
author |
Wood, Hannah Widdicombe, Stephen Spicer, John I |
author_facet |
Wood, Hannah Widdicombe, Stephen Spicer, John I |
author_sort |
Wood, Hannah |
title |
Seawater carbonate chemistry and nutrient fluxes during experiments with brittlestar Amphiura filiformis, 2009 |
title_short |
Seawater carbonate chemistry and nutrient fluxes during experiments with brittlestar Amphiura filiformis, 2009 |
title_full |
Seawater carbonate chemistry and nutrient fluxes during experiments with brittlestar Amphiura filiformis, 2009 |
title_fullStr |
Seawater carbonate chemistry and nutrient fluxes during experiments with brittlestar Amphiura filiformis, 2009 |
title_full_unstemmed |
Seawater carbonate chemistry and nutrient fluxes during experiments with brittlestar Amphiura filiformis, 2009 |
title_sort |
seawater carbonate chemistry and nutrient fluxes during experiments with brittlestar amphiura filiformis, 2009 |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.736021 https://doi.org/10.1594/PANGAEA.736021 |
long_lat |
ENVELOPE(-67.317,-67.317,-73.700,-73.700) |
geographic |
Toledo |
geographic_facet |
Toledo |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_source |
Supplement to: Wood, Hannah; Widdicombe, Stephen; Spicer, John I (2009): The influence of hypercapnia and the infaunal brittlestar Amphiura filiformis on sediment nutrient flux – will ocean acidification affect nutrient exchange? Biogeosciences, 6(10), 2015-2024, https://doi.org/10.5194/bg-6-2015-2009 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.736021 https://doi.org/10.1594/PANGAEA.736021 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.736021 https://doi.org/10.5194/bg-6-2015-2009 |
_version_ |
1766136198007357440 |