Seawater carbonate chemistry and shell length of northern abalone (Haliotis kamtschatkana) during experiments, 2011, supplement to: Crim, Ryan N; Sunday, Jennifer M; Harley, Christopher D G (2011): Elevated seawater CO2 concentrations impair larval development and reduce larval survival in endangered northern abalone (Haliotis kamtschatkana). Journal of Experimental Marine Biology and Ecology, 400(1-2), 272-277

• Main Authors: Crim, Ryan N, Sunday, Jennifer M, Harley, Christopher D G
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2011
• Subjects: Animalia; Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Development; Growth/Morphology; Haliotis kamtschatkana; Laboratory experiment; Mollusca; Mortality/Survival; North Pacific; Pelagos; Single species; Temperate; Zooplankton; Experimental treatment; Salinity; Salinity, standard deviation; Temperature, water; Temperature, standard deviation; pH; pH, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Haliotis kamtschatkana, larvae; Haliotis kamtschatkana, larvae, standard deviation; Haliotis kamtschatkana, normal; Haliotis kamtschatkana, normal, standard deviation; Haliotis kamtschatkana, shell length; Haliotis kamtschatkana, shell length, standard deviation; Carbonate system computation flag; Carbon dioxide; Partial pressure of carbon dioxide water at sea surface temperature wet air; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Aragonite saturation state; Calcite saturation state; pH meter Omega PHH-830; Alkalinity, Gran titration Gran, 1950; Calculated using seacarb after Nisumaa et al. 2010; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean Acidification International Coordination Centre OA-ICC; Pacific; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.771909; https://doi.pangaea.de/10.1594/PANGAEA.771909

Increasing levels of anthropogenic carbon dioxide in the world's oceans are resulting in a decrease in the availability of carbonate ions and a drop in seawater pH. This process, known as ocean acidification, is a potential threat to marine populations via alterations in survival and development. To date, however, little research has examined the effects of ocean acidification on rare or endangered species. To begin to assess the impacts of acidification on endangered northern abalone (Haliotis kamtschatkana) populations, we exposed H. kamtschatkana larvae to various levels of CO2 [400 ppm (ambient), 800 ppm, and 1800 ppm CO2] and measured survival, settlement, shell size, and shell development. Larval survival decreased by ca. 40% in elevated CO2 treatments relative to the 400 ppm control. However, CO2 had no effect on the proportion of surviving larvae that metamorphosed at the end of the experiment. Larval shell abnormalities became apparent in approximately 40% of larvae reared at 800 ppm CO2, and almost all larvae reared at 1800 ppm CO2 either developed an abnormal shell or lacked a shell completely. Of the larvae that did not show shell abnormalities, shell size was reduced by 5% at 800 ppm compared to the control. Overall, larval development of H. kamtschatkana was found to be sensitive to ocean acidification. Near future levels of CO2 will likely pose a significant additional threat to this species, which is already endangered with extinction due in part to limited reproductive output and larval recruitment. : 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).