Citation:

j.1365-2486.2012.02716.x

Name: Seawater carbonate chemistry and calcium carbonate of Padina spp., photosynthesis of Padina pavonica in nature CO2 gradients experiment
Published: 2012
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Animalia; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Chromista; CO2 vent; Coast and continental shelf; Echinodermata; Field observation; Growth/Morphology; Macroalgae; Mediterranean Sea; Ochrophyta; Padina pavonica; Padina sp.; Primary production/Photosynthesis; Single species; South Pacific; Temperate; Tropical

Always quote citation above when using data! You can download the citation in several formats below.

RIS Citation BibTeX Citation Text Citation Facebook TwitterShow Map Google Earth

Abstract:

Predicting the impacts of ocean acidification on coastal ecosystems requires an understanding of the effects on macroalgae and their grazers, as these underpin the ecology of rocky shores. Whilst calcified coralline algae (Rhodophyta) appear to be especially vulnerable to ocean acidification, there is a lack of information concerning calcified brown algae (Phaeophyta), which are not obligate calcifiers but are still important producers of calcium carbonate and organic matter in shallow coastal waters. Here, we compare ecological shifts in subtidal rocky shore systems along CO2 gradients created by volcanic seeps in the Mediterranean and Papua New Guinea, focussing on abundant macroalgae and grazing sea urchins. In both the temperate and tropical systems the abundances of grazing sea urchins declined dramatically along CO2 gradients. Temperate and tropical species of the calcifying macroalgal genus Padina (Dictyoaceae, Phaeophyta) showed reductions in CaCO3 content with CO2 enrichment. In contrast to other studies of calcified macroalgae, however, we observed an increase in the abundance of Padina spp. in acidified conditions. Reduced sea urchin grazing pressure and significant increases in photosynthetic rates may explain the unexpected success of decalcified Padina spp. at elevated levels of CO2. This is the first study to provide a comparison of ecological changes along CO2 gradients between temperate and tropical rocky shores. The similarities we found in the responses of Padina spp. and sea urchin abundance at several vent systems increases confidence in predictions of the ecological impacts of ocean acidification over a large geographical range.

Keyword(s):

Animalia; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Chromista; CO2 vent; Coast and continental shelf; Echinodermata; Field observation; Growth/Morphology; Macroalgae; Mediterranean Sea; Ochrophyta; Padina pavonica; Padina sp.; Primary production/Photosynthesis; Single species; South Pacific; Temperate; Tropical

Further details:

Lavigne, Héloïse; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb

Project(s):

Mediterranean Sea Acidification in a Changing Climate (MedSeA)

Ocean Acidification International Coordination Centre (OA-ICC)

Funding:

Seventh Framework Programme (FP7), grant/award no. 265103 : Mediterranean Sea Acidification in a Changing Climate

Coverage:

Median Latitude: 14.333335 * Median Longitude: 82.891665 * South-bound Latitude: -9.750000 * West-bound Longitude: 14.950000 * North-bound Latitude: 38.416670 * East-bound Longitude: 150.833330

Date/Time Start: 2010-09-01T00:00:00 * Date/Time End: 2011-05-31T00:00:00

Event(s):

Aeolian_Island_Vulcano * Latitude: 38.416670 * Longitude: 14.950000 * Date/Time Start: 2010-09-01T00:00:00 * Date/Time End: 2011-05-31T00:00:00 * Method/Device: In situ sampler (ISS)

Papua_New_Guinea * Latitude: -9.750000 * Longitude: 150.833330 * Date/Time Start: 2011-04-01T00:00:00 * Date/Time End: 2011-04-30T00:00:00 * Method/Device: In situ sampler (ISS)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2013-11-20.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Identification	ID		Johnson, Vivienne R
3	Species	Species		Johnson, Vivienne R
4	Replicate	Repl		Johnson, Vivienne R
5	Station label	Station		Johnson, Vivienne R
6	Coverage	Cov	%	Johnson, Vivienne R
7	Calcium carbonate	CaCO3	%	Johnson, Vivienne R
8	Maximum photochemical quantum yield of photosystem II	Fv/Fm		Johnson, Vivienne R
9	Maximal electron transport rate, relative	rETR max	µmol e/m²/s	Johnson, Vivienne R
10	Electron transport rate, relative	rETR	µmol e/m²/s	Johnson, Vivienne R		at supersaturating irradiance
11	Electron transport rate, relative	rETR	µmol e/m²/s	Johnson, Vivienne R		at subsaturating irradiance
12	Chlorophyll a	Chl a	µg/g	Johnson, Vivienne R
13	Chlorophyll c per cell	Chl c/cell	pg/#	Johnson, Vivienne R
14	Length	l	µm	Johnson, Vivienne R
15	Width	w	µm	Johnson, Vivienne R
16	Abundance	Abund		Johnson, Vivienne R		number of crustals per 5um*5um area
17	pH	pH		Johnson, Vivienne R	Potentiometric	NBS scale, median value
18	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Johnson, Vivienne R	Calculated using CO2SYS	median value
19	Alkalinity, total	AT	µmol/kg	Johnson, Vivienne R	Potentiometric titration
20	Alkalinity, total, standard deviation	AT std dev	±	Johnson, Vivienne R
21	Carbon, inorganic, dissolved	DIC	µmol/kg	Johnson, Vivienne R	Calculated using CO2SYS	median value
22	Carbonate ion	[CO3]2-	µmol/kg	Johnson, Vivienne R	Calculated using CO2SYS	median value
23	Bicarbonate ion	[HCO3]-	µmol/kg	Johnson, Vivienne R	Calculated using CO2SYS	median value
24	Calcite saturation state	Omega Cal		Johnson, Vivienne R	Calculated using CO2SYS	median value
25	Aragonite saturation state	Omega Arg		Johnson, Vivienne R	Calculated using CO2SYS	median value
26	Temperature, water	Temp	°C	Johnson, Vivienne R
27	Salinity	Sal		Johnson, Vivienne R
28	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
29	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
30	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
31	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
32	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
33	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
34	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
35	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
36	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
37	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

28736 data points

Download Data

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML (shows only first 2000 rows)