Seawater carbonate chemistry and benthic marine community during experiments, 2011
Seawater carbonate chemistry and benthic marine community during experiments, 2011
Ocean acidification is predicted to impact all areas of the oceans and affect a diversity of marine organisms. However, the diversity of responses among species prevents clear predictions about the impact of acidification at the ecosystem level. Here, we used shallow water CO2 vents in the Mediterranean Sea as a model system to examine emergent ecosystem responses to ocean acidification in rocky reef communities. We assessed in situ benthic invertebrate communities in three distinct pH zones (ambient, low, and extreme low), which differed in both the mean and variability of seawater pH along a continuous gradient. We found fewer taxa, reduced taxonomic evenness, and lower biomass in the extreme low pH zones. However, the number of individuals did not differ among pH zones, suggesting that there is density compensation through population blooms of small acidification-tolerant taxa. Furthermore, the trophic structure of the invertebrate community shifted to fewer trophic groups and dominance by generalists in extreme low pH, suggesting that there may be a simplification of food webs with ocean acidification. Despite high variation in individual species' responses, our findings indicate that ocean acidification decreases the diversity, biomass, and trophic complexity of benthic marine communities. These results suggest that a loss of biodiversity and ecosystem function is expected under extreme acidification scenarios.
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).
Supplement to: Kroeker, Kristy J; Micheli, Florenza; Gambi, Maria Cristina; Martz, Todd R (2011): Divergent ecosystem responses within a benthic marine community to ocean acidification. Proceedings of the National Academy of Sciences of the United States of America, 108(35), 14515-14520
Potentiometric open cell titration, Ocean Acidification International Coordination Centre (OA-ICC), Temperate, Salinity, Autosal, Community composition and diversity, Salinometer, inorganic, Alkalinity, total, standard deviation, Gastropoda, Alkalinity, total scale, European Project on Ocean Acidification EPOCA, Sipuncula, European network of excellence for Ocean Ecosystems Analysis EUR OCEANS, Temperature, water, Carbon, inorganic, dissolved, Decapoda, Calculated using seacarb after Nisumaa et al 2010, Aragonite saturation state, Alkalinity, total, total, CO2 vent, pH, partial pressure, Temperature, European network of excellence for Ocean Ecosystems Analysis (EUR-OCEANS), dissolved, Carbonate ion, Experimental treatment, Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), Potentiometric open-cell titration, Salinometer, Guildline Instruments, Autosal, Carbon dioxide, partial pressure, standard deviation, Earth System Research, standard deviation, Field observation, Isopoda, Calcite saturation state, Temperature, standard deviation, water, Site, Rocky-shore community, European Project on Ocean Acidification (EPOCA), Aragonite saturation state, standard deviation, Benthos, Salinity, standard deviation, Ocean Acidification International Coordination Centre OA ICC, Mediterranean Sea, Carbon, inorganic, dissolved, standard deviation, Calcite saturation state, standard deviation, Amphipoda, Bicarbonate ion, Calculated using seacarb after Nisumaa et al. (2010), Carbonate system computation flag, Calculated using seacarb, pH, standard deviation, Polychaeta, Guildline autosal salinometer, pH, total scale, Fugacity of carbon dioxide (water) at sea surface temperature (wet air), Carbon, Bivalvia, Biomass/Abundance/Elemental composition, Partial pressure of carbon dioxide water at sea surface temperature wet air, Sample ID, Carbon dioxide, Rocky shore community, Entire community, Fugacity of carbon dioxide water at sea surface temperature wet air, Honeywell Durafet pH sensors, Biomass Abundance Elemental composition, Coast and continental shelf, Guildline Instruments, Tanaidacea
Potentiometric open cell titration, Ocean Acidification International Coordination Centre (OA-ICC), Temperate, Salinity, Autosal, Community composition and diversity, Salinometer, inorganic, Alkalinity, total, standard deviation, Gastropoda, Alkalinity, total scale, European Project on Ocean Acidification EPOCA, Sipuncula, European network of excellence for Ocean Ecosystems Analysis EUR OCEANS, Temperature, water, Carbon, inorganic, dissolved, Decapoda, Calculated using seacarb after Nisumaa et al 2010, Aragonite saturation state, Alkalinity, total, total, CO2 vent, pH, partial pressure, Temperature, European network of excellence for Ocean Ecosystems Analysis (EUR-OCEANS), dissolved, Carbonate ion, Experimental treatment, Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), Potentiometric open-cell titration, Salinometer, Guildline Instruments, Autosal, Carbon dioxide, partial pressure, standard deviation, Earth System Research, standard deviation, Field observation, Isopoda, Calcite saturation state, Temperature, standard deviation, water, Site, Rocky-shore community, European Project on Ocean Acidification (EPOCA), Aragonite saturation state, standard deviation, Benthos, Salinity, standard deviation, Ocean Acidification International Coordination Centre OA ICC, Mediterranean Sea, Carbon, inorganic, dissolved, standard deviation, Calcite saturation state, standard deviation, Amphipoda, Bicarbonate ion, Calculated using seacarb after Nisumaa et al. (2010), Carbonate system computation flag, Calculated using seacarb, pH, standard deviation, Polychaeta, Guildline autosal salinometer, pH, total scale, Fugacity of carbon dioxide (water) at sea surface temperature (wet air), Carbon, Bivalvia, Biomass/Abundance/Elemental composition, Partial pressure of carbon dioxide water at sea surface temperature wet air, Sample ID, Carbon dioxide, Rocky shore community, Entire community, Fugacity of carbon dioxide water at sea surface temperature wet air, Honeywell Durafet pH sensors, Biomass Abundance Elemental composition, Coast and continental shelf, Guildline Instruments, Tanaidacea
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