Citation:

BBLv226n3p255

Name: Effects of ocean acidification on population dynamics and community structure of crustose coralline algae
Published: 2014-10-16
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Coast and continental shelf; Community composition and diversity; Entire community; Hydrolithon boreale; Hydrolithon sp.; Laboratory experiment; Neogoniolithon; Pneophyllum sp.; Porolithon onkodes; Reproduction; Rocky-shore community; South Pacific; Sporolithon sp.; Temperate

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Abstract:

Calcification and growth of crustose coralline algae (CCA) are affected by elevated seawater pCO2 and associated changes in carbonate chemistry. However, the effects of ocean acidification (OA) on population and community-level responses of CCA have barely been investigated. We explored changes in community structure and population dynamics (size structure and reproduction) of CCA in response to OA. Recruited from an experimental flow-through system, CCA settled onto the walls of plastic aquaria and developed under exposure to one of three pCO2 treatments (control [present day, 389±6 ppm CO2], medium [753±11 ppm], and high [1267±19 ppm]). Elevated pCO2 reduced total CCA abundance and affected community structure, in particular the density of the dominant species Pneophyllum sp. and Porolithon onkodes. Meanwhile, the relative abundance of P. onkodes declined from 24% under control CO2 to 8.3% in high CO2 (65% change), while the relative abundance of Pneophyllum sp. remained constant. Population size structure of P. onkodes differed significantly across treatments, with fewer larger individuals under high CO2. In contrast, the population size structure and number of reproductive structures (conceptacles) per crust of Pneophyllum sp. was similar across treatments. The difference in the magnitude of the response of species abundance and population size structure between species may have the potential to induce species composition changes in the future. These results demonstrate that the impacts of OA on key coral reef builders go beyond declines in calcification and growth, and suggest important changes to aspects of population dynamics and community ecology.

Keyword(s):

Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Coast and continental shelf; Community composition and diversity; Entire community; Hydrolithon boreale; Hydrolithon sp.; Laboratory experiment; Neogoniolithon; Pneophyllum sp.; Porolithon onkodes; Reproduction; Rocky-shore community; South Pacific; Sporolithon sp.; Temperate

Further details:

Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Latitude: -23.442310 * Longitude: 151.912750

Date/Time Start: 2010-12-05T00:00:00 * Date/Time End: 2011-02-15T00:00:00

Event(s):

Heron_Island_OA * Latitude: -23.442310 * Longitude: 151.912750 * Date/Time Start: 2010-12-05T00:00:00 * Date/Time End: 2011-02-15T00:00:00 * Method/Device: Experiment (EXP)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) 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 is 2014-10-16.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Species	Species		Ordoñez, Alexandra
2	Figure	Fig		Ordoñez, Alexandra
3	Treatment	Treat		Ordoñez, Alexandra
4	Identification	ID		Ordoñez, Alexandra		tank
5	Coverage	Cov	%	Ordoñez, Alexandra		crustose coralline algae crusts
6	Abundance per area	Abund a	#/m²	Ordoñez, Alexandra
7	Abundance	Abund	%	Ordoñez, Alexandra
8	Area in square milimeter	Area	mm²	Ordoñez, Alexandra		each individual
9	Abundance per area	Abund a	#/m²	Ordoñez, Alexandra		reproductive
10	Abundance per area	Abund a	#/m²	Ordoñez, Alexandra		nonreproductive
11	Abundance per area	Abund a	#/m²	Ordoñez, Alexandra		intact conceptacles
12	Abundance per area	Abund a	#/m²	Ordoñez, Alexandra		eroded conceptacles
13	Salinity	Sal		Ordoñez, Alexandra
14	Salinity, standard error	Sal std e	±	Ordoñez, Alexandra
15	Temperature, water	Temp	°C	Ordoñez, Alexandra
16	Temperature, water, standard error	T std e	±	Ordoñez, Alexandra
17	pH	pH		Ordoñez, Alexandra	Potentiometric	total scale
18	pH, standard error	pH std e	±	Ordoñez, Alexandra	Potentiometric	total scale
19	Alkalinity, total	AT	µmol/kg	Ordoñez, Alexandra	Potentiometric titration
20	Alkalinity, total, standard error	AT std e	±	Ordoñez, Alexandra	Potentiometric titration
21	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Ordoñez, Alexandra	Calculated using CO2SYS
22	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error	pCO2water_SST_wet std e	±	Ordoñez, Alexandra	Calculated using CO2SYS
23	Bicarbonate ion	[HCO3]-	µmol/kg	Ordoñez, Alexandra	Calculated using CO2SYS
24	Bicarbonate ion, standard error	[HCO3]- std e	±	Ordoñez, Alexandra	Calculated using CO2SYS
25	Carbonate ion	[CO3]2-	µmol/kg	Ordoñez, Alexandra	Calculated using CO2SYS
26	Carbonate ion, standard error	[CO3]2- std e	±	Ordoñez, Alexandra	Calculated using CO2SYS
27	Calcite saturation state	Omega Cal		Ordoñez, Alexandra	Calculated using CO2SYS
28	Calcite saturation state, standard error	Omega Cal std e	±	Ordoñez, Alexandra	Calculated using CO2SYS
29	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
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:

130378 data points

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