Microplastics are emerging contaminants and widespread in the ocean, but their impacts on coral reef ecosystems are poorly understood, and in situ study is still lacking. In the present study, the distribution patterns of microplastics in the environment and inhabiting organisms were investigated along the east coast of Hainan Island, South China Sea, and the physiological impacts of the microplastics on scleractinian corals were analyzed. We documented average microplastic concentrations of 14.90 particles L−1 in seawater, 343.04 particles kg−1 in sediment, 4.97 particles cm−2 in corals, and 0.67–3.12 particles cm−1 in Tridacnidae, Trochidae and fish intestines. Further analysis revealed that the characteristics of microplastics in the organisms were different from those in the environment, indicating preferential enrichment in the organisms. Furthermore, there was an obvious correlation between microplastic concentration and symbiotic density in corals. Furthermore, caspase3 activity was significantly positively correlated with the microplastic content in the small-polyp coral Pocillopora damicornis, but the large-polyp coral Galaxea fascicularis showed higher tolerance to microplastics. Taken together, our results suggest that microplastics are selectively enriched in corals and other reef-dwellers, in which they exact differential stress (apoptotic) effects, with the potential to impact the coral-Symbiodiniaceae symbiosis and alter the coral community structure.
Guidelines on Extended Producer Responsibility for Plastic Packaging. These guidelines provides framework for implementation of Extended Producer Responsibility. The Guidelines provide the roles and responsibilities of Producers, Importers, Brand Owners, Central Pollution Control Board, State Pollution Control Board or Pollution Control Committees, recyclers and waste processors for effective implementation of Extended Producer Responsibility. Please note[…]
The Policy Brief gives an overview of the current waste management related policy ecosystem and provides preliminary recommendations based on desk research, specifically on marine litter in India.
The Government of India announced the Plastic Waste Management Amendment Rules, 2021, which will prohibit the manufacture, import, stocking, distribution, sale and use of single use plastics (including polystyrene and expanded polystyrene) by 2022. To stop litering and promote reuse, the thickness of plastic carry bags have been increased. Please note that “English text follows[…]
Environment ministers around the globe agreed to create an Intergovernmental Negotiating Committee to create an international agreement to end plastic pollution at the fifth United Nations Environment Assembly (UNEA), held in Nairobi, Kenya, between February 28 and March 2, 2022.
Developing country facilities, financial and human resources prevent complete application of sampling, analysis, and observation protocols used in developed countries neccitating adaptations. Researchers in Vietnam developed and standardized a methodology for microplastic monitoring in sediments and surface waters of 21 environments (rivers, lakes, bays, beaches) of eight cities or provinces. The concentrations of microplastics in[…]