Effects of elevated CO2 and temperature on an intertidal meiobenthic community, supplement to: Meadows, AS et al. (2015): Effects of elevated CO2 and temperature on an intertidal meiobenthic community. Journal of Experimental Marine Biology and Ecology, 469, 44-56

In the near future, the marine environment is likely to be subjected to simultaneous increases in temperature and decreased pH. The potential effects of these changes on intertidal, meiofaunal assemblages were investigated using a mesocosm experiment. Artificial Substrate Units containing meiofauna from the extreme low intertidal zone were exposed for 60 days to eight experimental treatments (four replicates for each treatment) comprising four pH levels: 8.0 (ambient control), 7.7 & 7.3 (predicted changes associated with ocean acidification), and 6.7 (CO2 point-source leakage from geological storage), crossed with two temperatures: 12 °C (ambient control) and 16 °C (predicted). Community structure, measured using major meiofauna taxa was significantly affected by pH and temperature. Copepods and copepodites showed the greatest decline in abundance in response to low pH and elevated temperature. Nematodes increased in abundance in response to low pH and temperature rise, possibly caused by decreased predation and competition for food owing to the declining macrofauna density. Nematode species composition changed significantly between the different treatments, and was affected by both seawater acidification and warming. Estimated nematode species diversity, species evenness, and the maturity index, were substantially lower at 16 °C, whereas trophic diversity was slightly higher at 16 °C except at pH 6.7. This study has demonstrated that the combination of elevated levels of CO2 and ocean warming may have substantial effects on structural and functional characteristics of meiofaunal and nematode communities, and that single stressor experiments are unlikely to encompass the complexity of abiotic and biotic interactions. At the same time, ecological interactions may lead to complex community responses to pH and temperature changes in the interstitial environment.

Treatment, Salinity, Salinity, standard deviation, Sample ID, North Atlantic, Fugacity of carbon dioxide (water) at sea surface temperature (wet air), Taxon/taxa, Carbon, inorganic, dissolved, Alkalinity, total, Coast and continental shelf, Carbon, inorganic, dissolved, standard deviation, Ocean Acidification International Coordination Centre (OA-ICC), Temperature, Amphimonhystera sp., Community composition and diversity, Bicarbonate ion, standard deviation, Bottles or small containers/Aquaria ( 20 L), Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), pH, Carbonate ion, standard deviation, Entire community, Aragonite saturation state, standard deviation, Temperature, water, standard deviation, Calcite saturation state, standard deviation, Carbonate ion, Biomass/Abundance/Elemental composition, Temperature, water, Species, Carbonate system computation flag, Replicate, Identification, Bicarbonate ion, Calcite saturation state, Colorimetric, Potentiometric, Type, pH, standard deviation, Partial pressure of carbon dioxide, standard deviation, Aragonite saturation state, Rocky-shore community, Temperate, Laboratory experiment, Calculated using seacarb after Nisumaa et al. (2010), Calculated using CO2SYS, Counts, Alkalinity, total, standard deviation, Carbon dioxide, Benthos

10.1594/PANGAEA.859078

PANGAEA

Meadows, A S

8573649d-f103-4721-bda6-d32ee39c47f7

Ingels, Jeroen

5dbcfa51-def6-499e-b322-7d8709e3a672

Widdicombe, Stephen

3ecf2b3e-6b3f-4f2f-86c5-baf070e8c82b

Hale, Rachel

e5dfde12-523c-4000-ad0e-3431ffeafac1

Rundle, Simon

29fa5c25-f959-4aa0-8c9e-5e17247d20e9

Meadows, A S

8573649d-f103-4721-bda6-d32ee39c47f7

Ingels, Jeroen

5dbcfa51-def6-499e-b322-7d8709e3a672

Widdicombe, Stephen

3ecf2b3e-6b3f-4f2f-86c5-baf070e8c82b

Hale, Rachel

e5dfde12-523c-4000-ad0e-3431ffeafac1

Rundle, Simon

29fa5c25-f959-4aa0-8c9e-5e17247d20e9

Meadows, A S, Ingels, Jeroen, Widdicombe, Stephen, Hale, Rachel and Rundle, Simon (2015) Effects of elevated CO2 and temperature on an intertidal meiobenthic community, supplement to: Meadows, AS et al. (2015): Effects of elevated CO2 and temperature on an intertidal meiobenthic community. Journal of Experimental Marine Biology and Ecology, 469, 44-56. PANGAEA doi:10.1594/PANGAEA.859078 [Dataset]

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Published date: 2015

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Keywords: Treatment, Salinity, Salinity, standard deviation, Sample ID, North Atlantic, Fugacity of carbon dioxide (water) at sea surface temperature (wet air), Taxon/taxa, Carbon, inorganic, dissolved, Alkalinity, total, Coast and continental shelf, Carbon, inorganic, dissolved, standard deviation, Ocean Acidification International Coordination Centre (OA-ICC), Temperature, Amphimonhystera sp., Community composition and diversity, Bicarbonate ion, standard deviation, Bottles or small containers/Aquaria ( 20 L), Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), pH, Carbonate ion, standard deviation, Entire community, Aragonite saturation state, standard deviation, Temperature, water, standard deviation, Calcite saturation state, standard deviation, Carbonate ion, Biomass/Abundance/Elemental composition, Temperature, water, Species, Carbonate system computation flag, Replicate, Identification, Bicarbonate ion, Calcite saturation state, Colorimetric, Potentiometric, Type, pH, standard deviation, Partial pressure of carbon dioxide, standard deviation, Aragonite saturation state, Rocky-shore community, Temperate, Laboratory experiment, Calculated using seacarb after Nisumaa et al. (2010), Calculated using CO2SYS, Counts, Alkalinity, total, standard deviation, Carbon dioxide, Benthos