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However, benthic foraminiferal fossil assemblages exhibited minor changes after the 1950s."}),(0,n.jsx)("p",{children:"Although located far from urban development, the studied site is impacted by agricultural runoff, including contributions from livestock and on-site sewage treatment systems, which led to eutrophic conditions in 2005. Elevated concentrations of bacteria associated with human and animal waste\u2014exceeding safety thresholds for recreational use\u2014have also been detected in Carancahua Bay, suggesting significant runoff from agricultural lands."}),(0,n.jsx)("p",{children:"We can assess pollution levels and environmental stress impacts by analyzing the abundance, types, and evenness of microfossil assemblages in the sediment record. Under stressful conditions, microfossil abundance and diversity decrease, with the assemblage dominated by stress-resistant microfossils. Both Foraminifera and Ostracoda are sensitive to pollution. Due to their sensitivity, foraminifers are frequently used as bioindicators to monitor pollution levels in marine environments, whereas ostracods are particularly useful in freshened brackish and estuarine conditions."})]})]})}),(0,n.jsx)(m.l.Slide,{children:(0,n.jsxs)("div",{style:{display:"flex",height:"100%"},children:[(0,n.jsx)("div",{style:{width:"50%",alignContent:"center"},children:(0,n.jsx)("img",{className:r().overlay_intro_img,src:"/overlays/totalvalvesvsdepth.jpg"})}),(0,n.jsxs)("div",{className:r().overlay_intro_text,children:[(0,n.jsx)("p",{children:"Let's analyze the ostracod record at this Matagorda site. We observe the change in faunal abundance and diversity along the record. 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