Marine Plastic Pollution क्या है?
ऐतिहासिक पृष्ठभूमि
मुख्य प्रावधान
10 points- 1.
Sources: Single-use plastics, packaging, fishing gear (ghost gear), industrial pellets (nurdles), synthetic textiles (microfibers), improper waste disposal, storm run-off, and land-based litter.
- 2.
Types of Plastics: Macroplastics (>5mm), Microplastics (<5mm), and Nanoplastics (<100nm), which pose different threats.
- 3.
Impact on Marine Life: Ingestion (leading to starvation, internal injuries, false satiation, and transfer of toxic chemicals), entanglement (causing drowning, suffocation, restricted movement, and injuries), and habitat destruction (e.g., smothering coral reefs).
- 4.
Impact on Marine Ecosystems: Disruption of food webs, alteration of benthic habitats, introduction of invasive species via plastic rafts, and changes in oxygen levels.
- 5.
Impact on Human Health: Potential transfer of microplastics and associated toxins (e.g., phthalates, BPA) through the marine food chain to humans via seafood consumption, with long-term health implications under investigation.
- 6.
Persistence: Plastics are highly durable and degrade very slowly, persisting in the environment for hundreds to thousands of years, continuously breaking down into smaller fragments.
- 7.
Chemical Leaching: Plastics can leach harmful chemicals into the marine environment, contributing to chemical pollution.
- 8.
Bioaccumulation and Biomagnification: Toxins adsorbed onto or leached from plastics can accumulate in organisms and magnify up the food chain, affecting higher trophic levels.
- 9.
Economic Impact: Damages fisheries, aquaculture, tourism, and shipping industries due to debris and contamination.
- 10.
Global Distribution: Plastic debris is found in all marine environments, from the poles to the deepest ocean trenches.
दृश्य सामग्री
Marine Plastic Pollution: Causes, Impacts & Solutions
This mind map provides a comprehensive overview of marine plastic pollution, detailing its sources, types, multi-faceted impacts on marine life, ecosystems, and human health, and the various mitigation strategies. It highlights the interconnectedness of the issue.
Marine Plastic Pollution
- ●Sources
- ●Types of Plastics
- ●Impacts
- ●Persistence & Bioaccumulation
- ●Solutions & Governance
Evolution of Marine Plastic Pollution Awareness & Policy
This timeline traces key historical milestones, scientific discoveries, and policy interventions, both global and Indian, related to marine plastic pollution. It shows the progression from initial awareness to current global efforts for a binding treaty.
The issue of marine plastic pollution has evolved from a niche scientific concern to a major global environmental crisis. Early observations led to initial regulatory frameworks, but the sheer scale of plastic production and waste generation necessitated more comprehensive national and international actions, culminating in recent bans and the push for a global treaty.
- Mid-20th CenturyMass production of plastics begins, leading to rapid increase in plastic waste.
- 1970sFirst scientific observations of plastic debris in oceans.
- 1988MARPOL Annex V enters into force, prohibiting discharge of garbage (including plastics) from ships.
- 1997Discovery of the Great Pacific Garbage Patch (publicized later, raising global awareness).
- 2016India notifies Plastic Waste Management Rules, focusing on segregation, collection, and recycling.
- 2017UNEP launches 'Clean Seas Campaign' to engage governments, industry, and consumers.
- 2018India pledges to eliminate all single-use plastics by 2022 at World Environment Day.
- 2021Plastic Waste Management (Amendment) Rules, 2021, announcing phased ban on identified single-use plastics.
- 2022 (March)UN Environment Assembly (UNEA-5) adopts a resolution to develop a legally binding international treaty on plastic pollution by 2024.
- 2022 (July 1)Nationwide ban on identified single-use plastic items comes into effect in India.
- 2022 (July)Revised Extended Producer Responsibility (EPR) guidelines for plastic packaging notified in India.
हालिया विकास
5 विकासIndia's nationwide ban on identified single-use plastic items from July 1, 2022.
Adoption of a resolution at the UN Environment Assembly (UNEA-5) in 2022 to develop a legally binding international treaty on plastic pollution by 2024.
Revised Extended Producer Responsibility (EPR) guidelines for plastic packaging in India (2022), setting targets for recycling and use of recycled content.
Increased global focus on circular economy principles for plastics to reduce waste generation.
Launch of initiatives like 'Clean Seas Campaign' by UNEP and 'Swachh Sagar, Surakshit Sagar' in India.