Seawater carbonate chemistry and benthic marine community during experiments, 2011


Autoria(s): Kroeker, Kristy J; Micheli, Florenza; Gambi, Maria Cristina; Martz, Todd R
Data(s)

12/03/2011

Resumo

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.

Formato

text/tab-separated-values, 1056 data points

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.777433

doi:10.1594/PANGAEA.777433

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

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, doi:10.1073/pnas.1107789108

Palavras-Chave #abundance; Alkalinity, total; Alkalinity, total, standard deviation; Amphipoda; annelids; Aragonite saturation state; Aragonite saturation state, standard deviation; Bicarbonate ion; Bivalvia; BRcommunity; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using seacarb; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, partial pressure, standard deviation; community composition; crustaceans; Decapoda; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; field; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gastropoda; Guildline autosal salinometer; Honeywell Durafet pH sensors; Isopoda; Mediterranean; mollusks; morphology; OA-ICC; Ocean Acidification International Coordination Centre; other process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Polychaeta; Potentiometric open-cell titration; Salinity; Salinity, standard deviation; Sample ID; Sipuncula; Site; Tanaidacea; Temperature, standard deviation; Temperature, water
Tipo

Dataset