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Seasonal variations in microplastics in a coastal wetland in southwest India as well as their risks to Sillago sihama and Gerres filamentosus
Environmental Monitoring and Assessment2024
4 citations
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Score: 55
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Nelson Rangel-Buitrago,
Anjali Tamrakar,
Anjali Tamrakar,
Anjali Tamrakar,
Anjali Tamrakar,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Anish Kumar Warrier
Gokul Valsan,
Anish Kumar Warrier
Gokul Valsan,
Gokul Valsan,
S. Anusree,
S. Anusree,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Gokul Valsan,
Anish Kumar Warrier
Anish Kumar Warrier
Gokul Valsan,
Anish Kumar Warrier
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Anjali Tamrakar,
Anjali Tamrakar,
Anjali Tamrakar,
Anjali Tamrakar,
Anjali Tamrakar,
Anjali Tamrakar,
Anjali Tamrakar,
Anjali Tamrakar,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
S. Anusree,
S. Anusree,
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Nelson Rangel-Buitrago,
Anjali Tamrakar,
S. Anusree,
Anish Kumar Warrier
Nelson Rangel-Buitrago,
Gokul Valsan,
Anish Kumar Warrier
Gokul Valsan,
S. Anusree,
Anish Kumar Warrier
S. Anusree,
Nelson Rangel-Buitrago,
S. Anusree,
Gokul Valsan,
Nelson Rangel-Buitrago,
Anish Kumar Warrier
Anish Kumar Warrier
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Gokul Valsan,
Gokul Valsan,
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anjali Tamrakar,
Anjali Tamrakar,
Anish Kumar Warrier
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
Jagath Chand,
S. Anusree,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
S. Anusree,
Gokul Valsan,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Nelson Rangel-Buitrago,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Gokul Valsan,
Anish Kumar Warrier
Nelson Rangel-Buitrago,
Anjali Tamrakar,
Anjali Tamrakar,
Nelson Rangel-Buitrago,
Anjali Tamrakar,
Anjali Tamrakar,
Gokul Valsan,
Jagath Chand,
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Jagath Chand,
Nelson Rangel-Buitrago,
Anjali Tamrakar,
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Nelson Rangel-Buitrago,
Anjali Tamrakar,
Anish Kumar Warrier
Nelson Rangel-Buitrago,
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Anish Kumar Warrier
Summary
Researchers conducted seasonal sampling of microplastics in a mangrove ecosystem in southwest India and examined contamination in two fish species. They found that microplastic abundance varied significantly by season and water depth, with fibers being the most common type. The study also assessed potential health risks to both the fish and humans who consume them, highlighting how coastal wetland pollution can move through the food chain.
Microplastics are minute plastic particles ranging from 1 µm to 5 mm in size. Mangroves are crucial ecosystems with roles in carbon sequestration, shoreline protection, and habitat for diverse species. Despite their significance, the extent of microplastic pollution in mangroves, especially in India, remains inadequately understood. To address this gap, we conducted a seasonal sampling in the Kota mangrove ecosystem at different water column depths. Our analysis revealed average microplastic abundances of 0.93 (monsoon), 3.71 (post-monsoon), and 2.92 MPs/L (pre-monsoon). The average microplastic abundances were 19.88 and 15.86 microplastics/individual for Gerres filamentosus and Sillago sihama, respectively. Fibrous microplastics smaller than 1 mm were dominant. Transparent microplastics dominated the water column (28.57% in monsoon, 77.45% in post-monsoon, and 49.24% in pre-monsoon), and they were also prevalent in S. sihama (49.55%) and G. filamentosus (41.51%). This points towards greater bioavailability and suggests that transparent microplastics are often mistaken for prey. Anthropogenic influence is a major factor that governs microplastic distribution than season in Kota mangroves. Fourier transform infrared spectroscopy revealed that polypropylene was the dominant polymer in both water column as well as in S. sihama and G. filamentosus. We identified aquaculture, tourism, and local activities as probable sources of microplastic pollution. The monitoring data is crucial as it provides insights into microplastics pollution in two economically important fish species that are largely consumed by the local population. Exposure to microplastics from the consumption of these fish may cause serious health issues for human beings.