Macroalgal communities of gas vents near Ischia island in the Medterranean sea, 2011, supplement to: Porzio, Lucia; Buia, Maria-Cristina; Hall-Spencer, Jason M (2011): Effects of ocean acidification on macroalgal communities. Journal of Experimental Marine Biology and Ecology, 400(1-2), 278-287
There are high levels of uncertainty about how coastal ecosystems will be affected by rapid ocean acidification caused by anthropogenic CO2, due to a lack of data. The few experiments to date have been short-term (< 1 year) and reveal mixed responses depending on the species examined and the cult...
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ftdatacite:10.1594/pangaea.761767 2023-05-15T17:50:11+02:00 Macroalgal communities of gas vents near Ischia island in the Medterranean sea, 2011, supplement to: Porzio, Lucia; Buia, Maria-Cristina; Hall-Spencer, Jason M (2011): Effects of ocean acidification on macroalgal communities. Journal of Experimental Marine Biology and Ecology, 400(1-2), 278-287 Porzio, Lucia Buia, Maria-Cristina Hall-Spencer, Jason M 2011 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.761767 https://doi.pangaea.de/10.1594/PANGAEA.761767 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.jembe.2011.02.011 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY LATITUDE LONGITUDE Site Species pH Coverage European Project on Ocean Acidification EPOCA Supplementary Dataset dataset Dataset 2011 ftdatacite https://doi.org/10.1594/pangaea.761767 https://doi.org/10.1016/j.jembe.2011.02.011 2022-02-08T16:24:46Z There are high levels of uncertainty about how coastal ecosystems will be affected by rapid ocean acidification caused by anthropogenic CO2, due to a lack of data. The few experiments to date have been short-term (< 1 year) and reveal mixed responses depending on the species examined and the culture conditions used. It is difficult to carry out long-term manipulations of CO2 levels, therefore areas with naturally high CO2 levels are being used to help understand which species, habitats and processes are resilient to the effects of ocean acidification, and which are adversely affected. Here we describe the effects of increasing CO2 levels on macroalgal communities along a pH gradient caused by volcanic vents.Macroalgal habitat differed at taxonomic and morphological group levels along a pH gradient. The vast majority of the 101 macroalgal species studied were able to grow with only a 5% decrease in species richness as the mean pH fell from 8.1 to 7.8. However, this small fall in species richness was associated with shifts in community structure as the cover of turf algae decreased disproportionately. Calcitic species were significantly reduced in cover and species richness whereas a few non-calcified species became dominant. At mean pH 6.7, where carbonate saturation levels were < 1, calcareous species were absent and there was a 72% fall in species richness. Under these extremely high CO2 conditions a few species dominated the simplified macroalgal assemblage and a very few exhibited enhanced reproduction, although high CO2 levels seemed to inhibit reproduction in others.Our data show that many macroalgal species are tolerant of long-term elevations in CO2 levels but that macroalgal habitats are altered significantly as pH drops, contributing to a scant but growing body of evidence concerning the long-term effects of CO2 emissions in vegetated marine systems. Further study is now needed to investigate whether the observed response of macroalgal communities can be replicated in different seasons and from a range of geographical regions for incorporation into global modelling studies to predict effects of CO2 emissions on Earth's ecosystems. Dataset Ocean acidification DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
LATITUDE LONGITUDE Site Species pH Coverage European Project on Ocean Acidification EPOCA |
spellingShingle |
LATITUDE LONGITUDE Site Species pH Coverage European Project on Ocean Acidification EPOCA Porzio, Lucia Buia, Maria-Cristina Hall-Spencer, Jason M Macroalgal communities of gas vents near Ischia island in the Medterranean sea, 2011, supplement to: Porzio, Lucia; Buia, Maria-Cristina; Hall-Spencer, Jason M (2011): Effects of ocean acidification on macroalgal communities. Journal of Experimental Marine Biology and Ecology, 400(1-2), 278-287 |
topic_facet |
LATITUDE LONGITUDE Site Species pH Coverage European Project on Ocean Acidification EPOCA |
description |
There are high levels of uncertainty about how coastal ecosystems will be affected by rapid ocean acidification caused by anthropogenic CO2, due to a lack of data. The few experiments to date have been short-term (< 1 year) and reveal mixed responses depending on the species examined and the culture conditions used. It is difficult to carry out long-term manipulations of CO2 levels, therefore areas with naturally high CO2 levels are being used to help understand which species, habitats and processes are resilient to the effects of ocean acidification, and which are adversely affected. Here we describe the effects of increasing CO2 levels on macroalgal communities along a pH gradient caused by volcanic vents.Macroalgal habitat differed at taxonomic and morphological group levels along a pH gradient. The vast majority of the 101 macroalgal species studied were able to grow with only a 5% decrease in species richness as the mean pH fell from 8.1 to 7.8. However, this small fall in species richness was associated with shifts in community structure as the cover of turf algae decreased disproportionately. Calcitic species were significantly reduced in cover and species richness whereas a few non-calcified species became dominant. At mean pH 6.7, where carbonate saturation levels were < 1, calcareous species were absent and there was a 72% fall in species richness. Under these extremely high CO2 conditions a few species dominated the simplified macroalgal assemblage and a very few exhibited enhanced reproduction, although high CO2 levels seemed to inhibit reproduction in others.Our data show that many macroalgal species are tolerant of long-term elevations in CO2 levels but that macroalgal habitats are altered significantly as pH drops, contributing to a scant but growing body of evidence concerning the long-term effects of CO2 emissions in vegetated marine systems. Further study is now needed to investigate whether the observed response of macroalgal communities can be replicated in different seasons and from a range of geographical regions for incorporation into global modelling studies to predict effects of CO2 emissions on Earth's ecosystems. |
format |
Dataset |
author |
Porzio, Lucia Buia, Maria-Cristina Hall-Spencer, Jason M |
author_facet |
Porzio, Lucia Buia, Maria-Cristina Hall-Spencer, Jason M |
author_sort |
Porzio, Lucia |
title |
Macroalgal communities of gas vents near Ischia island in the Medterranean sea, 2011, supplement to: Porzio, Lucia; Buia, Maria-Cristina; Hall-Spencer, Jason M (2011): Effects of ocean acidification on macroalgal communities. Journal of Experimental Marine Biology and Ecology, 400(1-2), 278-287 |
title_short |
Macroalgal communities of gas vents near Ischia island in the Medterranean sea, 2011, supplement to: Porzio, Lucia; Buia, Maria-Cristina; Hall-Spencer, Jason M (2011): Effects of ocean acidification on macroalgal communities. Journal of Experimental Marine Biology and Ecology, 400(1-2), 278-287 |
title_full |
Macroalgal communities of gas vents near Ischia island in the Medterranean sea, 2011, supplement to: Porzio, Lucia; Buia, Maria-Cristina; Hall-Spencer, Jason M (2011): Effects of ocean acidification on macroalgal communities. Journal of Experimental Marine Biology and Ecology, 400(1-2), 278-287 |
title_fullStr |
Macroalgal communities of gas vents near Ischia island in the Medterranean sea, 2011, supplement to: Porzio, Lucia; Buia, Maria-Cristina; Hall-Spencer, Jason M (2011): Effects of ocean acidification on macroalgal communities. Journal of Experimental Marine Biology and Ecology, 400(1-2), 278-287 |
title_full_unstemmed |
Macroalgal communities of gas vents near Ischia island in the Medterranean sea, 2011, supplement to: Porzio, Lucia; Buia, Maria-Cristina; Hall-Spencer, Jason M (2011): Effects of ocean acidification on macroalgal communities. Journal of Experimental Marine Biology and Ecology, 400(1-2), 278-287 |
title_sort |
macroalgal communities of gas vents near ischia island in the medterranean sea, 2011, supplement to: porzio, lucia; buia, maria-cristina; hall-spencer, jason m (2011): effects of ocean acidification on macroalgal communities. journal of experimental marine biology and ecology, 400(1-2), 278-287 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2011 |
url |
https://dx.doi.org/10.1594/pangaea.761767 https://doi.pangaea.de/10.1594/PANGAEA.761767 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://dx.doi.org/10.1016/j.jembe.2011.02.011 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.761767 https://doi.org/10.1016/j.jembe.2011.02.011 |
_version_ |
1766156828444459008 |