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Subject: Conservation & Mitigation

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

  • Centre clears exploratory drilling in Hollongapar Gibbon Sanctuary

    Why in the News?

    Exploratory drilling for oil and gas has been approved within the eco-sensitive zone surrounding the Hollongapar Gibbon Wildlife Sanctuary.

    About the Hollongapar Gibbon WLS

    • Hollongapar Gibbon Wildlife Sanctuary was initially established as Hollongapar Reserve Forest in 1997 and renamed in 2004.
    • It is the only habitat for hollock gibbons in India.
    • Located in Assam, with the Bhogdoi River along its northern boundary.
    • Biome classified as plains alluvial semi-evergreen forests with patches of wet evergreen forests.
    • Flora:
      • Upper canopy: Dominated by Hollong trees (Dipterocarpus macrocarpus), Sam, Amari, Sopas, Bhelu, Udal, and Hingori.
      • Middle canopy: Features Nahar trees.
      • Lower canopy: Composed of evergreen shrubs and herbs.
    • Fauna:
      • Primates: Includes Hoolock Gibbons, Bengal Slow Loris (only nocturnal primate in Northeast India), stump-tailed macaques, northern pig-tailed macaques, eastern Assamese macaques, rhesus macaques, and capped langurs.
      • Other mammals: Indian elephants, tigers, leopards, jungle cats, wild boars, civets, squirrels, and more.

    About the Hoolock Gibbons:

    • Gibbons are the smallest and fastest apes, and they inhabit tropical and subtropical forests across Southeast Asia.
    • It is the only ape specie found in India.
    • They possess high intelligence, exhibit distinct personalities, and have strong familial bonds, reflecting characteristics similar to other ape species.
    • The current population of hoolock gibbons is estimated at around 12,000, found primarily in Northeast India, Bangladesh, Myanmar, and southern China.
    • Two distinct species, the eastern hoolock gibbon (Hoolock leuconedys) and the western hoolock gibbon (Hoolock hoolock), were previously reported in India.
    • Conservation Status
      • IUCN Red List: the western hoolock gibbon is classified as Endangered, and the eastern hoolock gibbon is classified as Vulnerable.
      • Both gibbon species in India are placed under Schedule I of the Wildlife (Protection) Act, 1972.

     

    PYQ:

    [2010] Consider the following pairs:

    Protected Area:: Well-known for

    1. Bhitarkanika, Orissa :: Salt Water Crocodile

    2. Desert National Park, Rajasthan :: Great Indian Bustard

    3. Eravikulam, Kerala :: Hoolock Gibbon

    Which of the pairs given above is/are correctly matched?

    (a) 1 only

    (b) 1 and 2 only

    (c) 2 only

    (d) 1, 2 and 3

  • NGT issues notice to Centre on use of invasive fish species for mosquito control

    Why in the News?

    The National Green Tribunal (NGT) has sought a response from the Central government regarding the use of two highly invasive and alien fish species—Gambusia affinis (Mosquitofish) and Poecilia reticulata (Guppy)—as biological agents for mosquito control in multiple states.

    Both species are classified as “invasive and alien” by the National Biodiversity Authority (NBA).

    About Gambusia Affinis (Western Mosquitofish)

    • It has been widely introduced worldwide as a biological control agent to reduce mosquito populations.
    • The mosquitofish primarily feeds on mosquito larvae, small insects, and zooplankton.
    • Despite its intended benefits, Gambusia affinis has been identified as one of the world’s most invasive species.
    • It is highly aggressive and competes with native fish for resources.
    • It also preys on the eggs and juveniles of indigenous fish, amphibians, and invertebrates, leading to a decline in local biodiversity.
    • The Invasive Species Specialist Group (ISSG) has listed it among the 100 worst invasive species globally due to its harmful ecological impact.

    About Poecilia Reticulata (Guppy, Millionfish, Rainbow Fish)

    • Poecilia reticulata, commonly known as the Guppy, Millionfish, or Rainbow Fish, is a small freshwater fish native to Northern South America and the Caribbean.
    • It is widely recognized for its vibrant colors and adaptability, making it a popular choice for both aquarium enthusiasts and mosquito control programs worldwide.
    • It is a highly adaptable species, capable of surviving in a variety of freshwater environments.
    • Guppies are omnivorous, feeding on mosquito larvae, small insects, algae, and organic detritus.
    • Their feeding habits make them a common choice for mosquito control programs, although their effectiveness is still debated.
    • While guppies are less aggressive than mosquitofish, their population growth can still disrupt local ecosystems.

    PYQ:

    [2023] ‘Wolbachia method’ is sometimes talked about with reference to which one of the following?

    (a) Controlling the viral diseases spread by mosquitoes
    (b) Converting crop residues into packing material
    (c) Producing biodegradable plastics
    (d) Producing biochar from thermo-chemical conversion of biomass

  • Inland Mangrove of Guneri

    Why in the News?

    The Gujarat government has declared the Guneri Inland Mangrove in Kutch as the state’s first Biodiversity Heritage Site (BHS) under The Biological Diversity Act, 2002.

    Inland Mangrove of Guneri

    Quick Facts about Mangroves in India:

    • “Red List of Mangrove Ecosystems” report released on May 22 (International Day for Biodiversity), 2024.
    • India holds 3% of South Asia’s total mangrove cover.
    • Mangrove cover increased by 54 sq km (1.10%), reaching 4,975 sq km (0.15% of India’s total area).
    • West Bengal leads (42.45%), followed by Gujarat (23.66%) and Andaman & Nicobar Islands (12.39%).
    • South 24 Parganas, West Bengal, alone contributes 41.85% of India’s mangrove cover, including Sundarbans National Park.
    • Gujarat recorded the highest increase, adding 37 sq km of mangrove cover.

    About Guneri Inland Mangroves:

    • Guneri Inland Mangroves (32.78 hectares) are a rare and unique mangrove ecosystem located in Kutch district, Gujarat.
    • It is India’s last remaining inland mangrove site and one of only eight such sites globally.
    • Unlike coastal mangroves, which thrive in tidal zones, Guneri mangroves exist inland without direct seawater contact.
    • These mangroves have historical and ecological significance, possibly originating after the Miocene marine transgression or forming along the banks of the ancient Saraswati River in the Great Rann of Kutch.

    Geographical Features:

    • It is located about 45 km from the Arabian Sea and 4 km from Kori Creek.
    • Terrain:
      • Flat land, unlike coastal mangroves that grow in muddy, tidal zones.
      • Devoid of sludge, making it resemble a forest rather than a typical mangrove swamp.
    • Water Source:
      • Thrives on limestone deposits, which help retain groundwater to sustain the mangroves.
      • No direct tidal water influx, relying entirely on underground water connectivity.
    • Biodiversity:
      • Home to 20 migratory bird species and 25 resident migratory avifaunal species.
      • Functions as a vital habitat for local and seasonal wildlife.

    PYQ:

    [2015] Which one of the following regions of India has a combination of mangrove forest, evergreen forest and deciduous forest?

    (a) North Coastal Andhra Pradesh

    (b) South-West Bengal

    (c) Southern Saurashtra

    (d) Andaman and Nicobar Islands

  • Four new sites to get Ramsar Tag

    Why in the News?

    Ahead of World Wetlands Day (February 2nd), the Environment Ministry announced the inclusion of four new Ramsar sites, bringing India’s total to 89.

    The newly designated sites are Sakkarakottai Bird Sanctuary and Therthangal Bird Sanctuary in Tamil Nadu, Khecheopalri Wetland in Sikkim, and Udhwa Lake Bird Sanctuary in Jharkhand.  With this, Tamil Nadu now has 20 Ramsar sites, the highest in the country, followed by Uttar Pradesh with 10 sites.

    About the Newly Added Ramsar Sites: 

    Description
    Sakkarakottai Bird Sanctuary, Tamil Nadu
    • Location: Ramanathapuram District, Tamil Nadu.
    • Originally an irrigation tank, now a designated bird sanctuary.
    • Recharged by northeast monsoon (Oct-Jan).
    • Supports 42+ bird species, including Spot-billed Pelican, Grey Heron, Little Cormorant, and Black Kite.
    Therthangal Bird Sanctuary, Tamil Nadu
    • Location: Theerthangal Village, Ramanathapuram District, Tamil Nadu.
    • A freshwater ecosystem and an important breeding ground for waterbirds.
    • Recorded 96 bird species across 18 orders and 44 families.
    • Notable species include Oriental Darter, Black-headed Ibis, Asian Woolly-necked Stork, and Spot-billed Pelican.
    Khecheopalri Wetland, Sikkim
    • Location: West Sikkim, near Khecheopalri Village.
    • A sacred lake revered by Buddhists and Hindus.
    • Part of a temperate Himalayan peatland ecosystem, surrounded by broad-leaved mixed temperate forests.
    • Flora: Rich in macrophytes, phytoplankton, and zooplankton.
    • Fauna: Supports fish species like Cyprinus carpio, Danio aequipinnatus, and various migratory birds (Common Merganser, Tufted Duck).
    Udhwa Lake Bird Sanctuary, Jharkhand
    • Location: Sahebganj District, Jharkhand.
    • Comprises two interconnected lakes: Pataura (155 ha) and Berhale (410 ha).
    • Connected to the Ganga River via the Udhuwa Nala (25 km stretch).
    • Pataura Lake depth: ~2 meters; Berhale Lake depth: ~70 cm, covered with aquatic vegetation.
    • Flora: Home to 42 algae species and 36 aquatic macrophytes.
    • Fauna: Habitat for 83 bird species, including the Near Threatened Black-necked Stork and 22 commercially valuable fish species.

     

    PYQ:

    [2019] Consider the following statements:

    1. Under Ramsar Convention, it is mandatory on the part of the Government of India to protect and conserve all the wetlands in the territory of India.
    2. The Wetlands (Conservation and Management) Rules, 2010 were framed by the Government of India based on the recommendations of Ramsar Convention.
    3. The Wetlands (Conservation and Management) Rules, 2010 also encompass the drainage area or catchment regions of the wetlands as determined by the authority.

    Which of the statements given above is/are correct?

    (a) 1 and 2 only

    (b) 2 and 3 only

    (c) 3 only

    (d) 1, 3 and 3

  • MoEFCC approves Reconstruction of Teesta Dam despite Safety Concerns

    Why in the News?

    The Union Ministry of Environment, Forest and Climate Change (MoEF&CC) has approved the reconstruction of the Teesta-III Dam, which was destroyed by a Glacial Lake Outburst Flood (GLOF) in October 2023.

    About Teesta River

    • The Teesta River is a transboundary river flowing through India and Bangladesh.
    • Originates from Tso Lhamo Lake, Sikkim, at 5,330 meters in the Himalayas.
    • Major tributary of the Brahmaputra River (Jamuna in Bangladesh).
    • Vital for irrigation, hydroelectric power, and water supply in Sikkim, West Bengal, and Bangladesh.
    • The Teesta Water Dispute remains unresolved, with Bangladesh seeking an equitable share of water.

    Geographical Features:

    • Length: 414 km (309 km in India, 105 km in Bangladesh).
    • Basin Area: 12,159 sq. km in Sikkim and North Bengal.
    • Originates in North Sikkim → flows through West Bengal → enters Bangladesh before merging with the Brahmaputra River.
    • Passes through major towns like Mangan, Kalimpong, Jalpaiguri, and Rangpo.
    • Tributaries:
      • Left-bank: Rangit, Relli, Great Rangit.
      • Right-bank: Lachung, Lachen, Talung.
    • It supports Himalayan biodiversity, crucial for tea plantations and terrace farming.

    Conservation Initiatives:

    • National River Conservation Plan (NRCP): Includes efforts to reduce pollution and improve water quality of the Teesta.
    • Teesta Barrage Project (West Bengal): Aimed at irrigation development and hydroelectric power generation in North Bengal.
    • Hydroelectric Projects in Sikkim: Several Teesta Hydropower Projects (Teesta Stage III, IV, V, VI, etc.) have been established to generate renewable energy while ensuring minimum ecological impact.
    • India-Bangladesh Water Sharing Talks: Ongoing diplomatic negotiations to resolve the Teesta water-sharing dispute, ensuring equitable distribution.
    • Catchment Area Treatment (CAT) Plan: Implemented to prevent soil erosion and siltation, protecting river health.
    PYQ:

    [2017] With reference to river Teesta, consider the following statements:

    1. The source of river Teesta is the same as that of Brahmaputra but it flows through Sikkim.

    2. River Rangeet originates in Sikkim and it is a tributary of river Teesta.

    3. River Teesta falls into Bay of Bengal at the border of India and Bangladesh.

    Which of the statements given above is/are correct?

    (a) 1 and 3 only

    (b) 2 only

    (c) 2 and 3 only

    (d) 1, 2 and 3

  • Indore and Udaipur earn global recognition for ‘Wetland Conservation’ Efforts

    Why in the News?

    Prime Minister recently commended Indore and Udaipur for earning a spot in the prestigious list of 31 Wetland Accredited Cities (WCA) worldwide under the Ramsar Convention on Wetlands.

    Key Highlights of Indore and Udaipur

    • Indore:
      • Known as India’s cleanest city and recipient of Smart City 2023 Award.
      • Sirpur Lake, a Ramsar site, supports large water bird congregations and is being developed as a bird sanctuary.
      • Over 200 wetland mitras are actively involved in conservation efforts, particularly protecting the Sarus Crane.
    • Udaipur:
      • Famous for its picturesque lakes, including Pichola, Fateh Sagar, Rang Sagar, Swaroop Sagar, and Doodh Talai.
      • These wetlands are vital for maintaining the city’s microclimate and providing a buffer against extreme weather events.

    About Wetland City Accreditation (WCA)

    • It was introduced during COP 12 (2015) of the Ramsar Convention to recognize cities that take exceptional steps in wetland conservation and sustainable management.
    • Objective: To promote the conservation and wise use of urban and peri-urban wetlands while fostering socio-economic benefits for local populations.
    • The accreditation is valid for 6 years.

    Criteria for WCA:

    Cities must meet specific standards set by the Ramsar Convention, including:

    • Presence of one or more Ramsar sites or significant wetlands.
    • Implementation of wetland conservation measures and restoration initiatives.
    • Integration of wetlands into land-use planning.
    • Raising public awareness about the importance of wetlands.
    • Establishing local committees with expertise in wetland management.
    • Having strong laws and policies to prevent wetland degradation.

    India’s Efforts in Wetland Conservation

    • India became a Ramsar Convention member in 1982, with 85 Ramsar sites covering 13,58,068 hectares (10% of India’s wetland area).
    • India initially designated 26 Ramsar sites (1982–2013) and added 59 more since 2014, reflecting a growing commitment to wetland preservation.
    • Tamil Nadu leads with 18 Ramsar sites, followed by Uttar Pradesh (10 sites).
    • Global Leadership Wetland Conservation:
      • UK has the highest number of Ramsar sites (175), followed by Mexico (142).
      • Bolivia has the largest area under Ramsar protection (148,000 sq. km).

    Interesting Facts about Indian Wetlands:

    • India’s wetlands cover 1,52,600 sq. km, constituting 4.63% of its geographical area (ISRO data).
    • Gujarat has the largest wetland area, followed by Andhra Pradesh, Uttar Pradesh, and West Bengal.
    • Ramsar Wetlands of International Importance:
      • Examples include Chilika Lake (Odisha), Sundarbans (West Bengal), and Keoladeo National Park (Rajasthan).

     

    PYQ:

    [2014] If a wetland of international importance is brought under the ‘Montreux Record’, what does it imply?

    (a) Changes in ecological character have occurred, are occurring or are likely to occur in the wetland as a result of human interference.
    (b) The country in which the wetland is located should enact a law to prohibit any human activity within five kilometres from the edge of the wetland.
    (c) The survival of the wetland depends on the cultural practices and traditions of certain communities living in its vicinity and therefore the cultural diversity therein should not be destroyed.
    (d) It is given the status of ‘World Heritage Site.’

  • Nahargarh Wildlife Sanctuary

    Why in the News?

    The Forest Department of Rajasthan has initiated efforts to revise the boundaries of the Nahargarh Wildlife Sanctuary to address existing legal and administrative complications.

    Nahargarh Wildlife Sanctuary

    About the Nahargarh Wildlife Sanctuary

    • It was established in 1980, Nahargarh Wildlife Sanctuary is located in Jaipur, Rajasthan.
    • It is named after the nearby Nahargarh Fort, which overlooks the sanctuary.
    • It is a significant part of the Ranthambore Tiger Reserve corridor, providing a habitat for wildlife movement.
    • Geographical Features:
      • It is situated in the Aravalli hills, close to Jaipur city, offering a natural escape amidst urban surroundings.
      • Its area spans approximately 50 square kilometres, featuring rugged terrain with hills, valleys, and plateaus.
      • It has seasonal streams and waterholes that serve as vital water sources for wildlife.
    • Flora and Fauna:
      • Flora: Comprises dry deciduous and thorny scrub forests, typical of the Aravalli range; Key tree species include Dhok, Babool, Khejri, and Ber; Grassy patches and scattered shrubs provide a diverse ecosystem for herbivores.
      • Fauna: Fauna: Includes leopards, hyenas, wild boars, jackals, sambars, chitals, peacocks, partridges, migratory birds, monitor lizards, snakes, turtles, and various pollinators.

    PYQ:

    [2012] In which one among the following categories of protected areas in India are local people not allowed to collect and use the biomass?

    (a) Biosphere Reserves

    (b) National Parks

    (c) Wetlands declared under Ramsar Convention

    (d) Wildlife Sanctuaries

  • In news: Vaigai River

    Why in the News?

    The Madras High Court has issued directives to local bodies in Madurai, Theni, Dindigul, Sivaganga, and Ramanathapuram districts to submit a comprehensive action plan with timelines to mitigate pollution in the Vaigai River.

    About Vaigai River

    Geographical Features and Location
    • Originates from the Varusanadu Hills in the Western Ghats, Tamil Nadu.
    • Flows through Madurai, Theni, Dindigul, Sivaganga, and Ramanathapuram districts.
    • Length: Approximately 258 km, draining into the Palk Strait.
    • Major towns along the river include Madurai.
    • Historical site Keeladi is also located along the river.
    Major and Minor Tributaries
    • Major Tributaries: Suruliyar River, Varaha River, Manjalar River, Kottagudi River, and Kridhumaal River.
    • Minor Tributaries: Sambanadi River, Kumilaar River, and Utharakosa Mangaiyar River.
    Conservation Sites and Programs
    • Srivilliputhur Megamalai Tiger Reserve: Acts as a vital catchment area and supports biodiversity.
    • Vaigai Dam: Built near Andipatti, providing irrigation and drinking water.
    • Vaigai River Restoration Program: Focuses on cleaning, improving water quality, and promoting biodiversity.

    In news: Vaigai River

    PYQ:

    [2021] Which one of the following statements is correct?​

    (a) Ajanta Caves lie in the gorge of Waghora river.​

    (b) Sanchi Stupa lies in the gorge of Chambal river.​

    (c) Pandu-lena Cave Shrines lie in the gorge of Narmada river.​

    (d) Amaravati Stupa lies in the gorge of Godavari river.​

  • In news: Chincholi Wildlife Sanctuary

    Why in the News?

    The Kalaburagi Forest Division is working to relocate a hamlet within the Chincholi Wildlife Sanctuary on the Karnataka-Telangana border to a safer area.

    About the Chincholi Wildlife Sanctuary

    Details
    • Declared a wildlife sanctuary in 2011, covering 134.88 sq. km.
    • Recognized as the first dryland Wildlife Sanctuary in South India.
    • Located in the Kalaburagi District, renowned for its floristic diversity.
    • Contributes to the conservation of dryland ecosystems.
    Geographical Location
    • Situated in the Hyderabad Karnataka region.
    • Features the Chandrampalli Dam and four smaller dams within the sanctuary.
    Flora and Fauna
    • Flora: Rich in medicinal plants and tree species like Red Sanders, Sandalwood, Acacia, and Teak.
    • Fauna:
      • Mammals: Blackbuck, Common Fox, Four-horned Antelope, Indian Wolf, Hyena, and Fruit Bat.
      • Birds: Over 35 species, including Black Drongo, Black-winged Kite, Blossom-headed Parakeet, Blue Pigeon, Black-headed Oriole, and Grey Partridge.
    Climatic/Geographical Features
    • Comprises dry deciduous and moist deciduous forests.
    • Fringes are planted with Acacia and Teak.
    • Supports a dryland ecosystem with water bodies like the Chandrampalli Dam.
    • Features a mix of arid and semi-moist climatic conditions.

     

    PYQ:

    [2018] In which one of the following States is Pakhui Wildlife Sanctuary located?

    (a) Arunachal Pradesh

    (b) Manipur

    (c) Meghalaya

    (d) Nagaland

  • Species in news: Indian Bison (Gaur)

    Why in the News?

    The Jharkhand Forest department has initiated a study to revive the dwindling population of Bison, popularly known as Gaur, at Palamu Tiger Reserve (PTR).

    bison

    About Indian Bison (Gaur)

    Details
    • Largest and tallest species in the wild cattle family.
    • Scientific Name: Bos gaurus.
    • Indigenous to South and Southeast Asia.
    Species Habitat and Location
    • Found in evergreen, semi-evergreen, and moist deciduous forests with open grasslands.
    • Prefers hilly terrains below 1,500–1,800 m with abundant water.
    • Distributed across India, Nepal, Bhutan, Myanmar, and Thailand.
    Behavioural Features
    • Social animals living in herds of 30–40 individuals.
    • Strong and sturdy limbs, short tails, and inward-curved pale green/yellowish-brown horns.
    • Males weigh 600–1,500 kg; females weigh 400–1,000 kg.
    • Convex-shaped forehead; height ranges from 170–230 cm.
    Conservation Status
    • IUCN Red List: Vulnerable.
    • Wildlife Protection Act, 1972: Schedule I.
    • CITES: Appendix I.

     

    PYQ:

    [2011] A sandy and saline area is the natural habitat of an Indian animal species. The animal has no predators in that area but its existence is threatened due to the destruction of its habitat. Which one of the following could be that animal?

    (a) Indian wild buffalo

    (b) Indian wild ass

    (c) Indian wild boar

    (d) Indian gazelle.