Journal
MARINE ENVIRONMENTAL RESEARCH
Volume 66, Issue 4, Pages 422-429Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2008.07.003
Keywords
Acidification; Calcium carbonate; Estuaries; Gastropods; Thais; pH
Funding
- Ministry of Development (MOD), Brunei Darussalam
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Although poorly reported in the scientific literature, acidic waters characterize many South East Asian estuaries. The observation of shell dissolution in a typically marine gastropod whelk (Thais) prompted investigation into determining relationships between shell properties of this whelk and the water chemistry (including pH) of the Sungai Brunei estuary (Borneo) in which it occurs. Shell weight, shell length and topographical shell features were determined for populations of Thais gradata distributed along a gradient of pH and salinity ranging between 5.78 and 8.3 pH units, and 3.58 and 31.2 psu. Shell weight varied independently of the co-varying acidity, salinity and calcium levels experienced. In contrast, shell length and a semi-quantitative variable based on shell sculpturing (shell erosion rank, SER) were significantly correlated with these water chemistry variables. This study brings attention to the potential use of estuarine organisms and systems in investigating current marine acidification questions. (C) 2008 Elsevier Ltd. All rights reserved.
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