AI Article Synopsis
- Coastal areas serve as critical zones where marine and land ecosystems interact, hosting significant economic activities like trade, fishing, and tourism.
- The port of La Rochelle, facing potential contamination from anthropogenic sources, particularly trace metals, raised concerns about the impact of galvanic cathodic protection methods on bivalve health.
- A study focused on the black scallop Mimachlamys varia used caging methods to evaluate health biomarkers, revealing that weather conditions and port activities may overshadow the effects of sacrificial anodes on scallop health over time.
Article Abstract
Coastal areas are important interface environments between marine and terrestrial ecosystems and are also areas of high economic activity related, among others, to trade, fishing and tourism. The port areas of La Rochelle (France) are part of these areas with strong anthropic activities and are therefore subject to potential contamination, particularly with trace metals. Among the various sources of discharges, galvanic (or sacrificial) cathodic protection can be questioned. Indeed, few studies have been carried out on the potential impact of the degradation of sacrificial anodes in ports on the health of bivalves. A study was therefore carried out on the black scallop Mimachlamys varia in the commercial port and the marina of La Rochelle using the caging method. Several biomarkers of the health status of individuals were observed in the laboratory (SOD, GST, MDA, AChE, and LAC). Among the different results obtained over two exposure periods, it appears that the potential effects of sacrificial anodes, whether new or present on site for several years, are masked by meteorological conditions, as well as by harbor activities.
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| http://dx.doi.org/10.1016/j.scitotenv.2022.159244 | DOI Listing |
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