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DAILY NEWS ANALYSIS

  • 09 December, 2023

  • 2 Min Read

Diel Vertical Migration (DVM)

Deep sea organisms plays a crucial role in the earth’s carbon cycle through the process of diel vertical migration. It is a synchronised vertical movement of billions of animals, mostly zooplankton (e.g., smallish animals, including fish, various shrimp, and jellies) in the ocean.

DVM is the largest migration on the planet by biomass which occurs daily in all oceans.

  • Principle – A delicate balance between the need to feed and to avoid becoming prey.
  • Timing of migration – In tune to the natural rhythms of sunrise and sunset.
  • During the night – They ascent from the mesopelagic layer to the epipelagic layer to graze on the microscopic phytoplankton while avoiding their daytime predators.
  • During day – They descent into deeper, darker levels of ocean to escape from the predators.

Role in carbon sequestration - They remove carbon from the upper ocean as they feed on surface-dwelling plankton and carry the carbon to deeper waters while returning.

  • When they are consumed by predators, the carbon is passed to them.
  • The carbon-rich wastes produced by the predators then sinks to the ocean floor, where it remains trapped for millennia.

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India–Azerbaijan

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India–Australia Economic Cooperation and Trade Agreem

The India–Australia Economic Cooperation and Trade Agreement has completed four years since its signing. Both countries now aim to build on this progress through strengthened collaboration and ambitious targets, including reaching AUD 100 billion in bilateral trade by 2030. What is the India–Australia Economic Cooperation and Tra

ADR Report on Political Funding

A recent report by the Association for Democratic Reforms (ADR) analyses donations of ?20,000 or more declared to the Election Commission of India (ECI) by national political parties for FY 2024–25, highlighting transparency and accountability in political financing. Key Findings Massive Funding Surge Total donations to nationa

Maritime Chokepoints

Maritime chokepoints are narrow channels along global shipping routes where maritime traffic is concentrated. These points are geopolitically and economically critical, as they handle a large proportion of global trade, especially energy shipments. Current Relevance Over two-thirds of seaborne energy trade passes through a handful o

US-Israel-Iran War

Following the launch of Operation Epic Fury (U.S.) and Operation Roaring Lion (Israel), the geopolitical landscape has shifted fundamentally with the confirmed death of Iran’s Supreme Leader, Ayatollah Ali Khamenei.Iran retaliated through Operation True Promise 4, launching missile attacks against Israel and nearby Gulf states. The escala

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