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Subject: Conservation & Mitigation

1. Conservation Progs.
2. Worldwide initiatives
3. Mitigation Strategies
4. Conventions and Protocols

  • National Endangered Species Day, 2024

    Why in the News?

    • National Endangered Species Day is an annual event that strives to raise awareness about the significance of safeguarding endangered species and their habitats.
    • This year, National Endangered Species Day was celebrated on May 17.

    What is National Endangered Species Day?

    • National Endangered Species Day is observed every year on the 3rd Friday of May.
    • This day was co-founded in 2006 by the Endangered Species Coalition and David Robinson.
    • Robinson defines Endangered Species Day as a “worldwide day of action to rescue species and celebrate conservation triumphs”.
    • Theme for 2024: “Celebrate Saving Species”.
    • According to the IUCN Red List Analysis 2020, over 500 land animal species will likely go extinct in the next two decades if current trends continue.

    Flagship species in India that are Endangered and often seen in the News:

    Species

    Conservation Status

    Key Information

    Asian Elephant

     

    • IUCN: Endangered
    • CITES Appendix I;
    • Schedule I (WPA, 1972)
    • Symbol of Heritage: Plays a key role in forest and grassland ecosystems.
    • Threats: Habitat loss, human-wildlife conflict, and poaching for tusks.
    • Conservation Needs: Sustained efforts are crucial to ensure their survival and maintain biodiversity.
    Ganges River Dolphin

    • IUCN: Endangered
    • CITES: Appendix I;
    • Schedule I (WPA, 1972)
    • Critical Habitat: Found in the Ganges-Brahmaputra-Meghna and Karnaphuli-Sangu river systems.
    • Challenges: Water extraction, pollution, and river traffic.
    • Population Decline: Less than 2,000 individuals remain in India.
    Bengal Tiger

    • IUCN: Endangered
    • CITES Appendix I;
    • Schedule I (WPA, 1972)
    • Iconic Predator: Represents a significant part of India’s wildlife.
    • Current Status: Numbers are increasing, but threats like poaching and habitat loss persist.
    • Habitat: Found across varied ecosystems, from forests to mangroves.
    Red Panda

    • IUCN: Endangered
    • CITES: Appendix I
    • Schedule I (WPA, 1972)
    • Status: Significant decline due to habitat loss and poaching.
    • Habitat Zones: Found in the eastern Himalayas and parts of Northeast India.
    • Conservation Importance: Serves as an indicator species for the health of the Himalayan forests.
    Asiatic Lion

    • IUCN: Endangered
    • CITES: Appendix I
    • Schedule I (WPA, 1972)
    • Last Refuge: Exclusively found in Gir National Park, Gujarat.
    • Population Challenges: Threats include poaching and accidental deaths from open wells and fences.
    • Conservation Strategies: Involves habitat restoration and stricter anti-poaching laws.
    Nilgiri Tahr

    • IUCN: Endangered
    • Schedule I (WPA, 1972)
    • Mountain Inhabitant: Lives in the mountainous regions of Kerala and Tamil Nadu.
    • Population Pressure: Climate change and human interference are major threats.
    • Survival Strategies: Requires focused conservation to stabilise its declining population.
    Lion-tailed Macaque

     

     

    • IUCN: Endangered
    • CITES Appendix I;
    • Schedule I (WPA, 1972)
    • Distinct Appearance: Notable for its silver mane, found in the Western Ghats.
    • Critical Decline: Population affected by habitat fragmentation and human interaction.
    • Behavioural Changes: Adjustments in their natural behaviours due to human activities are concerning.
    Great Indian Bustard (GIB)

    • IUCN: Critically Endangered
    • CITES Appendix I;
    • Schedule I (WPA, 1972)
    • IBs are the largest among India’s four bustard species and are considered flagship birds of grasslands.
    • Habitat reduced to just 10 per cent.
    • Overhead power transmission, poor vision, windmills, noise pollution, landscape changes, and alterations in cultivation patterns pose significant threats to GIBs.
    Golden Langur

    • IUCN: Endangered
    • CITES Appendix I;
    • Schedule I (WPA, 1972)
    • Approximately 7,396 Golden Langur (Trachypithecus geei) in India as per a census conducted by Assam Forest Department.
    Hangul (Kashmir Stag)

    • IUCN: Critically Endangered
    • CITES: Appendix I;
    • Kashmir’s Hangul, a shy and endangered species of deer, has exhibited a robust breeding season, suggesting a hopeful future for its population in the Dachigam National Park.
    • The Hanguls population could surpass 300 this spring, marking the first time in over 30 years.

     

    PYQ:

    [20I2] Which one of the following groups of animals belongs to the category of endangered species?

    (a) Great Indian Bustard, Musk Deer, Red Panda and Asiatic Wild Ass

    (b) Kashmir Stag, Cheetal, Blue Bull and Great Indian Bustard

    (c) Snow Leopard, Swamp Deer, Rhesus Monkey and Saras (Crane)

    (d) Lion-tailed Macaque, Blue Bull, Hanuman Langur and Cheetal

  • New Study Unveils the Origins and Challenges of Baobab Trees

    Why in the News?

    A recent study uncovers the origins and evolution of Baobabs, uniquely shaped trees in Madagascar, with species also native to Africa and Australia.

    Do you know?

    • Mandu, in the Dhar district of Madhya Pradesh, is perhaps the only place in India where baobab trees are found in abundance, with an estimated 1,000 trees in the periphery of the town.
    • Madhya Pradesh state government has plans to apply for a GI (Geographical Indication) tag for the Khorasani Imli or the fruit of the baobab.
    • A Baobab tree near the Golconda Fort in Andhra Pradesh is believed to be more than 400 years old.
    • Aside from Mandu, baobab trees have been recorded in Prayagraj (formerly Allahabad) in Uttar Pradesh, Wai in Maharashtra, and some places in Gujarat and Andhra Pradesh.

    About Baobab Trees

    • Baobabs are deciduous trees (that lose their leaves in autumn) belonging to the genus Adansonia. It comprises 8 distinct species:
      • Adansonia digitata in continental Africa.
      • Adansonia gregorii in Northwestern Australia.
      • 6 other species endemic to Madagascar.
    • Baobabs are known for:
      • Great heights, with some extending up to 50 metres.
      • Exceptionally long lifespans, going up to 2,000 years.
    • They have trunks with large circumferences; thin, spindly branches.
    • Nicknamed “upside down” trees because their tops resemble uprooted plants turned upside down.

    Conservation Status:

    • Threatened’ with extinction according to the IUCN Red List of Threatened Species.
    • Least Concern’ category but still faces threats such as residential and commercial development and livestock farming and ranching.

    Importance of Conservation:

    • The study emphasized the conservation of the baobab as a keystone species:
      • Keystone species provide essential resources, such as food or shelter, for a guild of animals.
      • In return, these animals provide essential services, such as pollination or diaspore dispersal.

    Why Baobab tree is called the “Mother of Forests”?

    • They can store large amounts of fresh water in their extraordinary trunks.
    • It also allows the baobab tree to produce nutritious fruits even during the driest years.
    • This makes them true life savers during times when water is scarce.
    • In local cultures, they are revered for multiple uses:
      • Edible fruits and seeds.
      • Seed oil used for cooking.
      • Bark fibre used for clothing.

     

    PYQ:

    [2021] “Leaf litter decomposes faster than in any other biome and as a result the soil surface is often almost bare. Apart from trees, the vegetation is largely composed of plant forms that reach up into the canopy vicariously, by climbing the trees or growing as epiphytes, rooted on the upper branches of trees.” This is the most likely description of​-

    (a) Coniferous forest

    (b) Dry deciduous forest

    (c) Mangrove forest

    (d) Tropical rain forest

  • Scientists document Sperm Whales ‘Phonetic Alphabet’

    Why in the news?

    • A recent study has uncovered the intricate structure of their communication system, which appears to possess a “phonetic alphabet,” offering new insights into the depth of their social interactions.
      • Sperm whales, the largest toothed whales, utilize a diverse array of vocalizations to communicate, including bursts of clicking noises known as ‘codas’.

    About Sperm Whales (Physeter macrocephalus)).

    • Sperm whales, the largest toothed whales
    • It has a series of vertical creases or wrinkles on its body and a small, inconspicuous dorsal fin located near the rear of its back.
    • The sperm whale uses ‘echolocation’ to navigate and locate prey during these deep dives.
      • Prey: Sperm whales primarily feed on squid (including the giant squid) sharks and deep-sea fish.
      • Habitat: Sperm whales are found in deep oceanic waters worldwide, from the equator to the edges of the pack ice in the Arctic and Antarctic.
      • Behavior: Known for their exceptional diving capabilities, sperm whales can dive to depths of over 2,000 meters (6,560 feet) and stay submerged for up to 90 minutes. They are social animals, typically found in groups called pods’, which can contain up to twenty individuals.
    • Conservation Status: Listed as ‘VULNERABLE’ by the IUCN.
      • Threats cause: Collisions with ships, entanglement in fishing gear, and noise pollution.

    Insights from the Study:

    • Expressivity: The study, which utilized data from Project CETI demonstrated that sperm whale calls exhibit a broader range of expressivity than previously recognized, hinting at a nuanced mode of communication.
    • Social Dynamics: Like all marine mammals, sperm whales rely heavily on vocalizations as an integral aspect of their social interactions.
    • Contextual Analysis: The next phase of research aims to decipher the behavioural context surrounding sperm whale vocalizations, shedding light on their potential meanings.

    About Project CETI (Cetacean Translation Initiative)

    • Project CETI is a non-profit, interdisciplinary scientific and conservation initiative on a mission to listen to and translate the communication of sperm whales off the island of Dominica in the Eastern Caribbean.

     

    PYQ:

    [2013] Consider the following animals

    1. Sea cow
    2. Sea horse
    3. Sea lion

    Which of the above is/are mammal/mammals?

    (a) 1 only

    (b) 1 and 3 only

    (c)  2 and 3 only

    (d) 1, 2 and 3

  • On Delhi’s mounting Waste Crisis | Explained

    Why in the News? 

    On May 13, the Supreme Court stated that addressing the “horrible” issue of 3,800 metric tonnes of untreated Municipal Solid Waste (MSW) accumulating daily in the national capital requires moving beyond party politics.

    What is the status of Delhi’s SWM system?

    • Population Growth and Waste Generation:
      • According to the 2011 Census Data, New Delhi’s population was approximately 1.7 crore. However, this Population is expected to increase to around 2.32 crore.
      • This increase will lead to a significant rise in waste generation, estimated at approximately 13,000 tonnes per day (TPD), which equates to roughly 1,400 truckloads daily.
      • Presently, this daily waste generation accumulates to about 42 lakh tonnes per annum. The population is anticipated to reach 2.85 crore by 2031 due to which the waste generation could increase to 17,000 TPD.
    • Waste Collection: Around 90% of the waste generated in the city is collected by three municipal corporations:
    • Municipal Corporation of Delhi (MCD)
    • Delhi Cantonment Board
    • New Delhi Municipal Corporation
    • Waste Composition is of major types – Biodegradable Wet Waste (50-55%), Non-Biodegradable Dry Waste (around 35%), and Inert Waste (10% that does not decompose). The total collective capacity of these facilities is about 9,200 tonnes per day (TPD).

    Issue of Unprocessed Waste Disposal: 

    • The Municipal Corporation of Delhi (MCD) is disposing of 3,800 TPD of unprocessed waste in landfills.
    • Designated Landfills (Gazipur, Bhalswa, and Okhla) are filled with unprocessed wet and dry waste, leading to significant environmental issues such as methane gas emissions, leachate production, and landfill fires.
    • The landfills have accumulated a total of 2.58 crore tonnes of legacy waste, covering 200 acres of land.

    What are the challenges faced by MCD?

    • Lack of Waste Segregation at Source: Many households and commercial establishments do not segregate waste. Unprocessed mixed waste enters landfills as a result.
    • Land Availability for Waste Processing Plants: Waste processing plants require large land parcels (30-40 acres each). Securing such large tracts of land is challenging in Delhi.
    • Public Awareness and Practices: There is a lack of public awareness regarding proper waste management practices. This leads to littering and improper disposal habits. MCD’s focus shifts to clearing open points rather than processing wet waste.
    • Inadequate Waste Collection Services: Some areas suffer from irregular waste collection services. This contributes to waste buildup and increased littering.
    • Illegal Dumping: Waste is often illegally dumped in open areas and water bodies. This increases the pressure on the MCD and requires additional resources for cleanup.

    What efforts need to be made by MCD?

    • Need for a Decentralized Approach: Given the challenges of identifying large land parcels, Delhi will need to partner with its neighboring States to set up a few of these composting plants.
      • Additionally, the market for organic compost produced from wet waste lies in the neighboring States of Haryana and Uttar Pradesh.
    • Need to work on Biodegradable Wet Waste: The design capacity for wet waste processing should be 9,000 TPD. This would require at least 18 composting or biogas plants (assuming each plant has a capacity of 500 TPD).
      • Significant efforts will be needed to identify land, establish composting facilities, and ensure their proper operation to prevent biodegradable waste from reaching landfills.
    • Need to work on Non-Biodegradable Dry Waste: Approximately 2% of dry waste is recyclable and should be sent to recycling facilities. The remaining 33% of non-recyclable dry waste (plastics, paper, textile waste) can be used as RDF for power generation in waste-to-energy projects.
    • Coordination Among Stakeholders: Improved coordination between various Municipal Corporations to streamline waste collection and segregation processes by collaborating with private companies and non-governmental organizations is needed to enhance waste segregation and processing efforts.

    Conclusion: Already, Biomining Initiative was launched in 2019 by the MCD to reduce the amount of waste. The COVID-19 pandemic interrupted these efforts. Originally planned for completion by 2024, now expected to take an additional two to three years.

    Mains PYQ: 

    Q What are the impediments in disposing the huge quantities of discarded solid wastes which are continuously being generated? How do we remove safely the toxic wastes that have been accumulating in our habitable environment? (UPSC IAS/2018)

  • [pib] Sub-Committee for GRAP reviews the Air Quality scenario in New Delhi

    Why in the News?

    • Delhi’s Air Quality Index (AQI) registered at 243, falling under the ‘Poor’ category, as reported by the Central Pollution Control Board (CPCB).
      • In response to this, the Sub-Committee under the Commission for Air Quality Management in NCR & Adjoining Areas (CAQM) convened to assess the situation and strategize under the Graded Response Action Plan (GRAP).

    About Graded Response Action Plan (GRAP)

    • The GRAP was conceived as a response to the alarming findings of a WHO study in 2014, which ranked Delhi as the most polluted city globally.
    • It is a framework designed to combat air pollution in the Delhi-NCR region.
    • The Supreme Court (M. C. Mehta vs. Union of India Case, 2016) approved GRAP after multiple expert consultations.
    • First GRAP was notified in January 2017 by the Ministry of Environment, Forest and Climate Change.

    Implementation of GRAP:

    • The Commission for Air Quality Management in NCR & Adjoining Areas (CAQM) took over the responsibility of implementing GRAP in 2021.
    • Before 2021, the SC appointed Environment Pollution (Prevention and Control) Authority (EPCA) would instruct states to enforce GRAP measures.
    • The CAQM recommendations depend on the Air Quality Index (AQI) and meteorological predictions provided by the Indian Institute of Tropical Meteorology (IITM) and the India Meteorological Department (IMD).

    Revised measures to implement:

    Air Quality Stage AQI Range Measures to be implemented
    Stage I (Poor) 201-300 Enforce NGT/Supreme Court’s order on over-aged diesel/petrol vehicles.
    Stage II (Very Poor) 301-400 Implement rigorous actions to combat air pollution at identified hotspots.
    Stage III (Severe) 401-450 Impose strict restrictions on BS III petrol and BS IV diesel vehicles. Suspend physical classes in schools for primary grade children up to Class 5 in certain areas.
    Stage IV (Severe Plus) >450 Prohibit the entry of four-wheelers registered outside Delhi, except for electric vehicles, CNG vehicles, and BS-VI diesel vehicles.

     

    Current Air Quality Scenario: Factors Contributing 

    • The GRAP sub-committee noted the following natural causes exacerbating dust suspension across the National Capital Region (NCR):
    1. Fluctuating wind patterns,
    2. Higher convection rates, and
    3. Arid weather conditions.
    • Additionally, increased instances of agricultural residue burning and forest fires in neighboring states were identified as potential contributors to deteriorating air quality.

    Action Plan suggested by GRAP Sub-Committee

    • Intensive Drives at Pollution Hotspots: The concerned Pollution Control Boards (PCBs) and NCR committees were tasked with conducting rigorous inspections at major pollution hotspots, prioritizing dust abatement measures.
    • Enhanced Dust Control Measures: Measures such as increased deployment of water sprinklers and mechanical road sweeping equipment were recommended to mitigate dust levels.
    • Preventing Open Burning: Vigilance against instances of open burning, including municipal solid waste (MSW) and agricultural residue, was emphasized to curb further pollution.
    • Strict Enforcement: Dust Control & Management Cells (DCMCs) and enforcement teams were instructed to intensify monitoring and enforcement efforts at construction sites and road projects.
    • Inspections and Compliance: Flying Squads of CPCB were directed to conduct thorough inspections and take appropriate action against violators of environmental regulations.

    PYQ:

    [2016] In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index?

    1. Carbon dioxide

    2. Carbon monoxide

    3. Nitrogen dioxide

    4. Sulphur dioxide

    5. Methane

    Select the correct answer using the codes given below:

    (a) 1, 2 and 3 only

    (b) 2, 3 and 4 only

    (c) 1, 4 and 5 only

    (d) 1, 2, 3, 4 and 5

  • Species in news: Himalayan Magpies 

    Why in the news?

    Blue magpie species are frequently observed from Kashmir to Myanmar.

    About Himalayan Magpies

    • Magpies belong to the Corvidae family, which also includes crows, jays, and ravens.
    • These birds are typically noisy and inquisitive, often featured as omens in folklore around the world.
    • Species Distribution and Habitat:
      • Gold-billed Magpie (Urocissa flavirostris): Also known as the yellow-billed blue magpie, this species inhabits high altitudes between 2,000 and 3,000 meters above sea level, thriving in the high-altitude zones of the Himalayas from Kashmir to Myanmar.
      • Red-billed Magpie: Found at slightly lower altitudes than the gold-billed magpie.
      • Blue Magpie: Occupies lower altitudes and is more likely to be found near human settlements. It builds nests in rhododendron trees.
    • IUCN Status: ‘Least Concerned’

    Observations:

    • The best sightings of yellow and red-billed magpies are along a trekking corridor in Western Sikkim, which spans from tropical forests at lower altitudes to Alpine landscapes.
    • Over 250 species of birds have been documented in this region, with significant bird activity around 2,500 meters.

    PYQ:

    [2014] If you walk through countryside, you are likely to see some birds stalking alongside the cattle to seize the insects, disturbed by their movement through grasses.

    Which of the following is/are such bird/birds?

    1. Painted Stork
    2. Common Myna
    3. Black-necked Crane

    Select the correct answer using the code given below.

    (a) 1 and 2

    (b) 2 only

    (c) 2 and 3

    (d) 3 only

  • 19th Session of the United Nations Forum on Forests (UNFF19) in New York

    Why in the news? 

    Recently, during the 19th Session (10th May 2024) of the United Nations Forum on Forests (UNFF19) in New York, a significant report titled “International Forest Governance” was published.

    About International Forest Governance: 

    • The report “Critical Review of Trends, Drawbacks, and New Approaches” authored by the Science-Policy Programme (SciPol) of the International Union of Forest Research Organizations (IUFRO) was released.
    • It marked the first global synthesis on international forest governance in 14 years.

    The report exposes the rising trend of ‘Climatization’ of forests:

    About Climatization of forests: 

    • Shift in Emphasis: The trend involves a notable shift in focus towards valuing forests primarily as carbon sinks, rather than recognizing their essential ecological and social functions.
    • Carbon Sequestration Priority: Political and financial orientations have increasingly prioritized carbon sequestration in forests as a means to address climate change issues. This emphasis often leads to the overshadowing of other aspects of forest management.
    • Neglect of Long-Term Sustainability: The emphasis on carbon sequestration may result in neglecting the long-term sustainability of forests. Forest management strategies that prioritize carbon storage may not necessarily align with broader ecological and social sustainability goals.

    Risks and their impacts:

    • Ongoing Crises: Despite efforts to reduce deforestation, significant challenges persist, including climate change, biodiversity loss, and socio-economic inequalities. These crises pose substantial threats to global sustainability and well-being.
    • Commodification Risks: The commodification of forests for carbon capture introduces risks that may exacerbate existing inequalities and hinder effective forest management practices.

    Market-based Versus Non-market Approaches:

    • Market-Based Solutions: There has been significant traction in market-based solutions such as forest carbon trading and zero-deforestation supply chains. These approaches aim to incentivize sustainable forest management practices through economic mechanisms.
    • Exacerbation of Inequities: Despite their popularity, market-based solutions may exacerbate existing inequities within forest governance systems. Certain stakeholders or regions may benefit disproportionately, while others may be marginalized or disadvantaged.
    • Non-market mechanisms: As an alternative, non-market mechanisms, including state regulation and community-led initiatives, are suggested to offer more just and effective pathways for forest governance.

    Policy recommendations as per the Report:

    • Holistic Valuation of Forests: Policymakers should reevaluate forests beyond their role as carbon sinks, recognizing their multifaceted ecological, social, and economic values.
    • Equitable Governance: Policymakers should prioritize inclusive decision-making processes that ensure the voices of marginalized groups, such as indigenous and local communities, are heard and respected.
    • Protection of Rights and Livelihoods: Policies should prioritize the protection of the rights and livelihoods of resource-dependent communities.

    Way Forward: 

    • Integrated Forest Management: Governments and international organizations should adopt integrated approaches to forest management that recognize and balance the ecological, social, and economic values of forests.
    • Strengthening Governance Structures: Policymakers should work to strengthen governance structures at local, national, and international levels to ensure more equitable decision-making processes.

    Mains PYQ:

    Q Examine the status of forest resources of India and its resultant impact on climate change. (UPSC 2020)

  • Tiger Translocation in Sahyadri-Konkan Wildlife Corridor  

    Why in the news?

    Maharashtra’s plan to increase tigers count in Sahyadri-Konkan Wildlife Corridor by translocating tigers from Tadoba-Andhari Tiger Reserve (TATR) (Chandrapur, Maharashtra) underscores the critical role of wildlife corridors in conservation efforts.

    About Tadoba-Andhari Tiger Reserve (TATR)

    • Tadoba became one of India’s earliest national parks when it was declared in 1955, alongside Kanha National Park.
    • The name “Tadoba” is derived from the deity “Tadoba” or “Taru,” worshipped by local Gond Tribals, and “Andhari” refers to the Andhari River flowing through the reserve.
    • It was later expanded and officially merged with the Andhari Wildlife Sanctuary in 1993 to form the TATR.
    • TATR is regarded as one of the world’s most preferred destinations for tiger sightings and is a critical part of Project Tiger, aimed at conserving tigers in India.
    • The reserve has 115 tigers, including 88 within the forest and 27 in the areas immediately surrounding the reserve.

    About Sahyadri-Konkan Wildlife Corridor  

    • The Sahyadri-Konkan corridor (Sahyadri-Radhanagari-Goa-Karnataka), plays a vital role in conserving wildlife, particularly tigers, in the northern Western Ghats region.
    • It spans throughout the states of Maharashtra, Goa, and Karnataka, specifically through the Western Ghats, one of the world’s eight biodiversity hotspots.
    • Protected Areas Connected:
    1. Sahyadri Tiger Reserve (includes Koyna Wildlife Sanctuary (WLS) and Chandoli National Park) and Radhanagari Wildlife Sanctuary (Maharashtra);
    2. Bhimgad Wildlife Sanctuary and Kali Tiger Reserve (includes Anshi National Park and Dandeli WLS) in (Karnataka);
    3. Mollem National Park, Netravali Wildlife Sanctuary (Goa).
    • Fauna: Tiger (Panthera tigris), Indian leopard (Panthera pardus), dhole (Cuon alpinus), and sloth bear (Melursus ursinus), etc.
    • The Western Ghats, including parts of the corridor, are designated as a UNESCO World Heritage Site in 2012 due to their outstanding universal value in terms of biodiversity and endemic species.

    PYQ:

    [2020] Among the following Tiger Reserves, which one has the largest area under “Critical Tiger Habitat”?

    (a) Corbett

    (b) Ranthambore

    (c) Nagarjunsagar-Srisailam

    (d) Sunderbans

  • Orangutan uses Plant to treat wound

    Why in the news?

    An orangutan was observed treating a wound with medicine from a tropical plant, showcasing how some animals employ natural remedies to alleviate their ailments.

    • This behavior, documented in a recent study published in Scientific Reports, represents a novel instance of self-medication among wild animals.

    About Orangutans

    • Orangutans, are distinguished by their vivid red fur, are the largest arboreal mammals and spend the majority of their time in trees and forests.
    • The name “orangutan” translates to “man of the forest” in Malay.
    • They possess long, powerful arms and grasping hands and feet that facilitate movement through the branches.
    • Highly intelligent, these great apes share 96.4% of genetic makeup of modern man.
    • Orangutans primarily inhabit the tropical rainforests of Southeast Asia, specifically on the islands of Borneo and Sumatra.
    • Conservation Status: Critically Endangered (IUCN Red list)
    • Population: Bornean (Approximately 104,700); Sumatran (Approximately 13,846); Tapanuli (Around 800);
    • Behavioral Features:
      • These apes lead mostly solitary lives in the lowland forests, dining on wild fruits such as lychees, mangosteens, and figs, and drinking water collected in tree cavities.
      • Orangutans are mainly frugivorous, they primarily eat fruits, and consume leaves, bark, insects, and occasionally small animals.
      • They construct nests in trees with vegetation for sleeping at night and resting during the day.
      • And, now they are found treating a wound with medicine from a Tropical plant.

    PYQ:

    [2013] Consider the following:

    1. Star tortoise
    2. Monitor lizard
    3. Pygmy hog
    4. Spider monkey

    Which of the above are naturally found in India?

    (a) 1, 2 and 3 only

    (b) 2 and 3 only

    (c) 1 and 4 only

    (d) 1, 2 and 3 and 4

  • Mass Coral Bleaching in Lakshadweep Sea

    The Agatti Reef is experiencing unprecedented mass coral bleaching.
    The Agatti Reef is experiencing unprecedented mass coral bleaching.

    Why in the news?

    Extreme heatwaves along the Indian coast, coupled with marine heatwaves, have triggered Mass Coral Bleaching events in the Lakshadweep Sea.

    Heatwaves Toll on Lakshadweep’s Coral:

    Researchers from the ICAR-Central Marine Fisheries Research Institute (CMFRI) conducted surveys across various Lakshadweep Islands.

      • The Degree Heating Week (DHW) indicator in Lakshadweep has soared above 4 °C-weeks, as per the National Oceanic and Atmospheric Administration (NOAA).
        • This elevation in DHW levels poses a substantial risk of coral bleaching, posing a severe threat to the region’s marine ecosystems.
    • Should DHW surpass 12 °C-weeks, it could trigger an unprecedented biodiversity crisis, leading to multispecies mortality.
    • Prolonged marine heatwaves since October 2023 have inflicted substantial stress on the coral reefs, exacerbating bleaching phenomena.
      • A marine heatwave is characterized by seawater temperatures exceeding a seasonally-varying threshold (often the 90th percentile) for at least 5 consecutive days.
    Degree Heating Week (DHW) indicator: It is a measurement used to assess the accumulated thermal stress that corals experience over an extended period, which can lead to coral bleaching. This indicator is expressed in °C-weeks, reflecting the exposure of coral reefs to elevated sea surface temperatures.

    Lakshadweep’s Coral Treasure: Agatti Reef

    • Agatti Island is part of the Lakshadweep archipelago, situated in the Arabian Sea.
    • The island is surrounded by extensive coral reefs, making it a popular destination for snorkeling and diving enthusiasts.
    • The coral reefs around Agatti Island are composed of various coral species, including branching corals like Acropora, table corals like Acropora Hyacinthus, and massive corals like Porites.
    • These corals form intricate reef structures that provide habitat and food for numerous marine organisms.

    What causes Coral Bleaching?

    • When exposed to conditions like heat stress, pollution, or high levels of ocean acidity, the zooxanthellae start producing reactive oxygen species not beneficial to the corals.
    • So, the corals kick out the colour-giving algae from their polyps, exposing their pale white exoskeleton and leading to coral starvation as corals cannot produce their own food.
    • Severe bleaching and prolonged stress in the external environment can lead to coral death.

    Back2Basics: Corals

    • Coral are made up of genetically identical organisms called polyps.
    • These polyps have microscopic algae called zooxanthellae living within their tissues in a mutualistic relationship.
    • The coral provides the zooxanthellae with the compounds necessary for photosynthesis.
    • In return, the zooxanthellae supply the coral with organic products of photosynthesis, like carbohydrates, which are utilized by the coral polyps for synthesis of their calcium carbonate skeletons.
    • Corals are marine invertebrates or animals which do not possess a spine.
    • They are the largest living structures on the planet.
    • Each coral is called a polyp and thousands of such polyps live together to form a colony, which grow when polyps multiply to make copies of themselves.
    • Coral reefs are also called the “rainforests of the seas”.

    Types of Coral

    Corals are of two types — hard corals and soft corals:

    1. Hard corals extract calcium carbonate from seawater to build hard, white coral exoskeletons. Hard corals are in a way the engineers of reef ecosystems and measuring the extent of hard coral is a widely-accepted metric for measuring the condition of coral reefs.
    2. Soft corals attach themselves to such skeletons and older skeletons built by their ancestors. Soft corals also add their own skeletons to the hard structure over the years. These growing multiplying structures gradually form coral reefs.

    Conditions needed for Corals to Flourish

    • Extensive submarine platforms for the formation of colonies by the coral polyps (not more than 90m below sea level).
    • High mean annual temperature ranging 20-21 degree Celsius.
    • Clean sediment-free water because muddy water or turbid water clogs the mouths of coral polyps resulting into their death.
    • Oceanic salinity ranging between 27-30 ppt.
    • Ocean currents and waves, as they bring food supply for the polyps.

     

    PYQ:

    2014: Which of the following have coral reefs?

    1. Andaman and Nicobar Islands
    2. Gulf of Kachchh
    3. Gulf of Mannar
    4. Sunderbans

    Select the correct answer using the code given below:

    (a) 1, 2 and 3 only

    (b) 2 and 4 only

    (c) 1 and 3 only

    (d) 1, 2, 3 and 4