A baseline assessment of coastal pH variability in a temperate South African embayment: implications for biological ocean acidification research ...
Compared with the open ocean, knowledge of pH variability in coastal waters is rudimentary, especially in Africa. This is concerning as quantifying local pH conditions is critical when assessing the response of coastal species to future ocean acidification scenarios. The objective of this study was...
| Main Authors: | , , , , , |
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| Format: | Text |
| Language: | unknown |
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Taylor & Francis
2022
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| Online Access: | https://dx.doi.org/10.6084/m9.figshare.21749556.v1 https://tandf.figshare.com/articles/journal_contribution/A_baseline_assessment_of_coastal_pH_variability_in_a_temperate_South_African_embayment_implications_for_biological_ocean_acidification_research/21749556/1 |
| Summary: | Compared with the open ocean, knowledge of pH variability in coastal waters is rudimentary, especially in Africa. This is concerning as quantifying local pH conditions is critical when assessing the response of coastal species to future ocean acidification scenarios. The objective of this study was to capture some of the variability in pH at scales and sites relevant to coastal marine organisms in a South African temperate embayment (Algoa Bay, Indian Ocean). We used a sampling approach that captured spatial (at a resolution of ∼10 km), monthly and diel (24-hour) variability in pH and associated physical and biological parameters at offshore and shallow inshore sites in Algoa Bay. We found that pH and associated parameters (temperature, calculated p CO 2 , chlorophyll a ) varied over space and time in Algoa Bay. The range in pH was 0.30 units at offshore sites and 0.46 at inshore sites, and the average pH was 8.10 (SD 0.06) and 8.10 (SD 0.13) at these sites, respectively, which is typical for coastal ... |
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