Assessing microplastics in aquatic ecosystem: Sources, effects, and nature-based solution. A review

Regional Studies in Marine Science, Journal Year: 2025, Volume and Issue: unknown, P. 104030 - 104030

Published: Jan. 1, 2025

Language: Английский

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Status of Ganges River dolphin Platanista gangetica (Lebeck, 1801) in the lower stretch of the Ganga River, India, with emphasis on threats, conservation, and recommendations

Frontiers in Ecology and Evolution, Journal Year: 2025, Volume and Issue: 13

Published: March 19, 2025

The Ganges River dolphin (GRD), Platanista gangetica , is one of the most endangered cetaceans in world and seriously danger from dams barrages, restricted river flows, bycatch, pollution, etc. GRD a freshwater dolphin, commonly known as "susu", four cetacean species world. primarily inhabits estuarine zones, never venturing into sea. present study (2022–23) conducted seasonal survey at Bhagirathi–Hooghly systems West Bengal to investigate abundance, habitat use, potential threats lower stretches Ganga. During we recorded 303 dolphins with higher numbers individuals dry season (0.47 dolphins/linear km) than wet (0.29 km). also confirmed that inhabit confluences, or tributary junctions, meanderings abundant prey-fish. rapidly declining Ganga faces numerous threats, including aquatic destruction, net entanglements, overfishing destructive fishing gear, agricultural industrial effluents, vessel collisions, sand mining, lack awareness about conservation. No, regulated, hotspot locations, ensuring well maintaining enough are likely help preserve reduce competition for fish fishermen.

Language: Английский

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Modeling the Vertical Transport of Copepod Fecal Particles under Nano/Microplastic Exposure

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Nano- and microplastics (NMPs) may significantly impact the marine carbon cycle, fecal pellets produced by copepods are crucial for vertical transport. In this study, we investigated effects of NMP size, concentration, diatom supply on production settling copepod Parvocalanus crassirostris. By employing an aggregation-induced emission fluorescence imaging technique, visualized distribution NMPs in pellets, measured their size rate, developed a fluid dynamic model to simulate process water column. Our results indicated that NPs MPs exhibited uniform nonuniform distributions materials, respectively. reduced both integrity pellets. Copepods ingested absence diatoms, but exposure 5000 μg/L decreased pellet 52% presence diatoms due feeding selectivity. The sinking rates varying sizes, as obtained from modeling simulations, ranged 10.9 103.1 m/day. When proportion participating polystyrene (PS) reached 50%, velocity 34%. study provides new insights into transport under pollution.

Language: Английский

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Microplastic distribution and its implications for human health through marine environments

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 382, P. 125427 - 125427

Published: April 18, 2025

Language: Английский

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