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General Studies 3 >> Enivornment & Ecology

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ATLANTIFICATION

ATLANTIFICATION

 

1. Context

Researchers have discovered the cause of the Arctic Ocean sea ice decrease since 2007. The results suggest that when an atmospheric phenomenon known as the Arctic dipole reverses itself in its periodic cycle, there will be more pronounced drops in sea ice.

2. What is Atlantification?

Atlantification refers to a process in which the characteristics of a body of water, typically a sea or an ocean, become more similar to those of the North Atlantic Ocean. This term is often used in the context of climate change and its impact on polar regions, particularly the Arctic Ocean.

The North Atlantic Ocean has certain distinct features, such as relatively warm temperatures, strong ocean currents, and a higher salt content compared to other oceanic regions. As global temperatures rise due to climate change, the Arctic region is experiencing rapid warming and significant changes in its environmental conditions.

Atlantification of the Arctic Ocean occurs as warmer water from the North Atlantic Ocean flows northward into the Arctic region. This warmer water can have several effects on the Arctic environment:

  • Sea Ice Reduction: Warmer water can contribute to the melting of Arctic sea ice, leading to a decrease in the extent and thickness of the ice cover. This reduction in sea ice has numerous ecological and climatic consequences.
  • Altered Ecosystems: As the Arctic Ocean warms, it can lead to shifts in marine ecosystems, impacting the distribution and behavior of various species of marine life, including fish, marine mammals, and seabirds.
  • Changes in Ocean Circulation: The influx of warmer water can alter ocean circulation patterns in the Arctic, which can, in turn, affect global climate systems.
  • Rising Sea Levels: The melting of Arctic ice contributes to rising sea levels globally, which can have significant consequences for coastal communities around the world.
Atlantification is just one aspect of the complex changes occurring in the Arctic due to climate change. It underscores the interconnected nature of Earth's climate systems and highlights the need for continued research and international cooperation to better understand and address these changes and their potential impacts.

3. Atlantic and its biodiversity

The Atlantic Ocean is the second-largest ocean in the world and encompasses a vast and diverse range of ecosystems and biodiversity. It is home to a wide variety of marine species, and its ecosystems vary significantly from one region to another. Here are some key aspects of Atlantic Ocean biodiversity:

  • Marine Species: The Atlantic Ocean hosts a rich diversity of marine species, including fish, mammals, invertebrates, and plants. Some iconic species found in the Atlantic include Atlantic cod, humpback whales, loggerhead sea turtles, and various species of sharks.
  • Coral Reefs: The Atlantic Ocean is home to several coral reef systems, with the most famous being the Caribbean coral reefs. These reefs support a multitude of species and provide essential habitats for many marine organisms.
  • Seabirds: The Atlantic Ocean serves as a critical habitat for numerous seabird species. These birds often breed on remote islands and coastal cliffs, using the ocean as their primary foraging area. Albatrosses, puffins, and gannets are some examples of Atlantic seabirds.
  • Migratory Species: The Atlantic Ocean plays a crucial role in the life cycles of many migratory species. For instance, it serves as a migration route for various species of sea turtles, dolphins, and whales.
  • Deep-Sea Biodiversity: The Atlantic Ocean's depths contain a mysterious and diverse range of life forms. Deep-sea ecosystems are characterized by unique adaptations to extreme pressure, cold temperatures, and limited light. Deep-sea creatures such as anglerfish, giant tube worms, and deep-sea corals are examples of the biodiversity found in these environments.
  • Threats to Biodiversity: Like many marine ecosystems around the world, the Atlantic Ocean faces several threats to its biodiversity. Overfishing, habitat destruction, pollution, climate change, and ocean acidification are some of the major challenges that can harm marine life in the Atlantic.
  • Conservation Efforts: Numerous conservation organizations and initiatives are working to protect and preserve the biodiversity of the Atlantic Ocean. Efforts include establishing marine protected areas, sustainable fisheries management, and campaigns to reduce plastic pollution and combat climate change.
  • International Cooperation: Given that the Atlantic Ocean borders numerous countries and spans a vast area, international cooperation is crucial for effectively managing and conserving its biodiversity. Various regional organizations and agreements exist to address common conservation goals and challenges.
Image Source: Web

Understanding and conserving the biodiversity of the Atlantic Ocean is essential not only for the health of the ocean itself but also for the well-being of human communities that depend on it for food, livelihoods, and recreational activities. Protecting this rich and diverse marine environment is a global priority.

4. All government missions in the Atlantic

Several governments and international organizations have been involved in various missions and initiatives related to the Atlantic Ocean. These missions and initiatives often focus on research, conservation, exploration, and sustainable management of the Atlantic Ocean's resources. Here are a few notable ones:

  • Galway Statement on Atlantic Ocean Cooperation: The Galway Statement, signed in 2013 by the European Union, Canada, and the United States, initiated a framework for cooperation on Atlantic Ocean research and exploration. It aims to promote a better understanding and sustainable management of the Atlantic Ocean.
  • EU Atlantic Strategy: The European Union (EU) has developed an Atlantic Strategy to promote economic growth, protect the environment, and enhance security in the Atlantic Ocean region. This strategy includes initiatives related to marine research, sustainable fisheries, and maritime spatial planning.
  • Blue Belt Programme (UK): The United Kingdom has implemented the Blue Belt Programme, which aims to protect the marine environments of the UK Overseas Territories in the Atlantic, including the waters around Ascension Island, Saint Helena, Tristan da Cunha, and the South Georgia and South Sandwich Islands.
  • Atlantic Ocean Research Alliance (AORA): AORA is an initiative involving the European Union, Canada, and the United States to advance collaborative research efforts in the Atlantic Ocean. It supports various research projects related to oceanography, climate change, and marine ecosystems.
  • Partnership for Observation of the Global Oceans (POGO): POGO is an international organization that promotes international cooperation in oceanographic research. It has programs and initiatives related to the Atlantic Ocean, including research vessel collaborations and capacity-building efforts.
For Prelims: Atlantic Ocean, Atlantification, Coral Reefs, Galway Statement on Atlantic Ocean Cooperation, Blue Belt Programme, Atlantic Ocean Research Alliance (AORA), and Partnership for Observation of the Global Oceans (POGO).
For Mains: 1. Discuss the concept of Atlantification in the context of climate change. How does the influx of warm water from the North Atlantic impact the Arctic region, and what are the broader implications for global climate systems and ecosystems? (250 words).
 

Previous year Question

1. The Sargasso Sea is a vast patch of the Atlantic Ocean characterized by an abundance of floating brown seaweed called 'Sargassum'. This is formed due to the deposit of marine plants and refuse carried by the (UPSC CAPF 2014)
1. North Atlantic current
2. Canary current
3. North Atlantic Equatorial current
Select the correct answer using the code given below:
A. 1 only
B. 2 and 3 only
C. 1 and 3 only
D. 1, 2 and 3
Answer: D
 
2. In the South Atlantic and South-Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the the reason? (UPSC 2015)
A. Sea surface temperatures are low
B. Inter-Tropical Convergence Zone seldom occurs
C. Coriolis force is too weak
D. Absence of land in those regions
Answer: B
Source: The Print

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