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GS Paper: GS3-18.Conservation, Environmental Pollution and Degradation, Environmental Impact Assessment.

  • 7,396 Golden Langur in India, reveals survey

    Golden Langur

    In the news

    • The latest survey conducted by the Primate Research Centre NE India (PRCNE), Assam Forest Department has estimated a population of approximately 7,396 Golden Langur (Trachypithecus geei) in India.

    About Golden Langur

    Details
    Identification
    • Recognizable by the color of their fur, which gives them their name.
    • Fur color changes with the seasons.
    • Young langurs are almost pure white.
    Geographic Range
    • Found in Assam, India, and neighboring Bhutan year-round.
    • Inhabits an area bordered by the foothills of Bhutan (north), Manas river (east), Sankosh river (west), and Brahmaputra river (south).
    Habitat
    • Occupies moist evergreen and tropical deciduous forests, along with some riverine areas and savannahs in Assam and Bhutan.
    • Prefers living in the upper canopy of sub-tropical forests in the south and temperate forests in the north.
    Conservation Status
    • IUCN: Endangered
    • CITES: Appendix I
    • Wildlife Protection Act, 1972: Schedule I
    Key Habitats
    • Ripu Reserve Forest and Chakrashila Wildlife Sanctuary serve as vital habitats.
    • Fragmented habitats face instability and threats.

     


    Try this PYQ from CSE Prelims 2012:

    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

     

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  • Rajasthan’s Proposal to Classify Orans as Deemed Forests

    sacred grove oran

    In the news

    • A recent state government notification has struck fear in Rajasthan community dwellers about losing access to forest produce and livelihoods.
    • Communities, particularly those in western Rajasthan, are concerned about the state’s proposal to classify Oran, Dev-vans and Rundhs (sacred groves) as deemed forests.

    What are Sacred Groves?

    • Sacred groves of India are forest fragments of varying sizes, which are communally protected, and which usually have a significant religious connotation for the protecting community.
    • It usually consists of a dense cover of vegetation including climbers, herbs, shrubs and trees, with the presence of a village deity and is mostly situated near a perennial water source.
    • Sacred groves are considered to be symbols of the primitive practice of nature worship and support nature conservation to a great extent.
    • The introduction of the protected area category community reserves under the Wild Life (Protection) Amendment Act, 2002 has introduced legislation for providing government protection to community-held lands, which could include sacred groves.

    Historical references

    • Indian sacred groves are often associated with temples, monasteries, shrines, pilgrimage sites, or with burial grounds.
    • Historically, sacred groves find their mentions in Hindu, Jain and Buddhist texts, from sacred tree groves in Hinduism to sacred deer parks in Buddhism for example.
    • Sacred groves may be loosely used to refer to natural habitat protected on religious grounds.
    • Other historical references to sacred groves can be obtained in Vrukshayurveda an ancient treatise, ancient classics such as Kalidasa’s Vikramuurvashiiya.
    • There has been a growing interest in creating green patches such as Nakshatravana

    Regulation of activities in Sacred Grooves

    • Hunting and logging are usually strictly prohibited within these patches.
    • Other forms of forest usage like honey collection and deadwood collection are sometimes allowed on a sustainable basis.
    • NGOs work with local villagers to protect such groves.
    • Traditionally, and in some cases even today, members of the community take turns to protect the grove.

    Threats to such grooves

    • Threats to the groves include urbanization and over-exploitation of resources.
    • While many of the groves are looked upon as abode of Hindu deities, in the recent past a number of them have been partially cleared for construction of shrines and temples.

    Total grooves in India

    • Around 14,000 sacred groves have been reported from all over India, which act as reservoirs of rare fauna, and more often rare flora, amid rural and even urban settings.
    • Experts believe that the total number of sacred groves could be as high as 100,000.
    • They are called by different names in different states:
    1. Sarna in Bihar
    2. Dev Van in Himachal Pradesh
    3. Devarakadu in Karnataka
    4. Kavu in Kerala
    5. Dev in Madhya Pradesh
    6. Devarahati or Devarai in Maharashtra
    7. Law Kyntang or Asong Khosi in Meghalaya
    8. Kovil Kadu or Sarpa Kavu in Tamil Nadu
  • Meghalaya’s Byrnihat Most Polluted ‘City’ in India

    meghalaya

    In the news

    • The Centre for Research on Energy and Clean Air (CREA) recently released data shedding light on air pollution levels across urban centers in India during February 2024.
    • Surprisingly, Meghalaya’s Byrnihat emerged as the most polluted ‘city’ in the nation, sparking concerns about air quality in the otherwise cleaner Northeast region.

    About Centre for Research on Energy and Clean Air (CREA)

    • CREA is a non-profit think tank researching energy and air pollution based in Helsinki (Finland).
    • It was established in 2019 with the goal of tracking the impacts of air pollution by providing data-backed research products.

    Key Insights

    (1) Alarming Pollution Levels in NE

    • Pollution Pinnacle: Byrnihat, an industrial town near the Assam border, recorded the highest levels of PM2.5 pollution in India, with a monthly average concentration of 183 µg/m3.
    • Byrnihat vs. National Averages: Byrnihat’s PM2.5 levels were significantly higher than those in Bihar’s Araria, the second-most polluted city, highlighting the severity of pollution in the former.
    • Northeastern Representation: Other northeastern cities such as Nalbari, Agartala, Guwahati, and Nagaon also featured among the 30 most polluted cities in India, indicating a broader regional trend of worsening pollution levels.

    (2) Cleanest Cities and Regional Disparities

    • Positive Performers: Sivasagar, Silchar, Aizawl, and Imphal emerged as the cleanest cities in the region, with PM2.5 concentrations below the National Ambient Air Quality Standard (NAAQS).
    • National Rankings: Sivasagar secured the second position nationally, underscoring its exemplary air quality standards.

    (3) Silver Lining: Improvements and Opportunities

    • Positive Trends: February witnessed a notable improvement in air quality, with 36 cities classified under the ‘good’ category, reflecting positive strides in pollution mitigation efforts.
    • Opportunities for Progress: The data signals opportunities for collaborative action and policy interventions to address environmental challenges and safeguard public health.

    Implications and Recommendations

    • Monitoring Imperative: The data underscores the urgent need to enhance air quality monitoring infrastructure in the northeastern states to effectively track pollution levels.
    • Environmental Concerns: Unregulated industrial operations, inadequate public transportation, rampant construction, and other factors contribute to the deteriorating air quality in the region, necessitating stringent regulatory measures.
  • Illegal Tree Felling at Jim Corbett National Park

    corbet

    In the news

    • The recent Supreme Court ruling on tiger safaris in Uttarakhand’s Jim Corbett National Park has ignited discussions on wildlife conservation and tourism development.
    • The Court has condemned the unlawful felling of over 6,000 trees for constructing buildings under the guise of eco-tourism.

    About Jim Corbett National Park

    Details
    Establishment Established on August 8th, 1936 (originally as Hailey National Park)
    Location Uttarakhand State, Nainital region
    Renaming Renamed as Ramganga National Park (1954–1955),

    Later reverted to Corbett National Park

    Total Area 1,318.54 square kilometers (509.09 square miles)
    Ecological Zones Dhikala, Bijrani, Jhirna, Sonanadi, Durgadevi, Dhela
    Conservation Programs Included in Project Tiger (1973);

    Part of World Wide Fund for Nature’s Terai Arc Landscape Program

    Flagship Species Focus on Bengal tiger, Asiatic elephant, Great One-horned rhino
    Geographical Features Ridges, streams, plateaus, ravines, grasslands, deciduous woods, pine forests
    Importance Designated as Important Bird Area by Birdlife International;

    Key role in wildlife conservation efforts

     

    Court’s Decision on Jim Corbett NP

    • Petition against Captive Animal Holding: The Supreme Court addressed a petition opposing captive animal holding in the national park.
    • Permitted Tiger Safaris: The Court allowed the establishment of tiger safaris in peripheral and buffer zones with specified conditions.
    • Balancing Tourism and Ecosystem Preservation: The Court aimed to maintain a delicate balance between promoting tourism and preserving sensitive ecosystems within Jim Corbett National Park.

    Impact of Tourism on Locals & Wildlife

    • Tourism as a Livelihood: Locals rely on tourism for income, with transportation, tourist safaris, food centers, and accommodation facilities contributing significantly.
    • Infrastructure and Conservation: Tourism infrastructure obstructs wildlife corridors, impacting conservation efforts. The phasing out of Dhikala tourism complex is deemed necessary to comply with legal requirements.
    • Animal-Centric Approach: The Supreme Court emphasizes an animal-centric approach over tourist-centric policies to ensure conservation in national parks.
  • India’s first National Dolphin Research Centre finally a reality

    In the news

    • The inauguration of the National Dolphin Research Centre (NDRC) in Patna marks a significant step towards the conservation of the Gangetic Dolphin.
    • The NDRC aims to facilitate in-depth studies on various aspects of Gangetic dolphins, including behavior, survival skills, food habits, and mortality factors.
    • Led by Bihar Chief Minister Nitish Kumar, this pioneering institute promises to advance scientific understanding and foster conservation efforts for this iconic species.

    Key Facts about Gangetic Dolphin

    Details
    Discovery Platanista gangetica also known as the “Tiger of the Ganges,” was officially discovered in 1801.
    Habitat Historically distributed in major river systems of India, Nepal, and Bangladesh, including the Ganges-Brahmaputra-Meghna and Karnaphuli-Sangu.
    Features
    • Essentially blind, hunts by emitting ultrasonic sounds.
    • Frequently found alone or in small groups, usually with a calf.
    • Females larger, give birth once every 2-3 years.
    Importance
    • Indicator of river ecosystem health.
    • Designated National Aquatic Animal (2009) and State Aquatic Animal of Assam.
    Major Threats
    • Unintentional killing in fishing gear.
    • Poaching for dolphin oil.
    • Habitat destruction due to development and pollution.
    Protection Status
    • IUCN: Endangered
    • CITES: Appendix I
    • CMS: Appendix I
    • Indian Wildlife (Protection) Act 1972: Schedule I
    Government Initiatives

    Try this PYQ from CSE Prelims 2015:

    Which one of the following is the national aquatic animal of India?

    (a) Saltwater crocodile
    (b) Olive ridley turtle
    (c) Gangetic dolphin
    (d) Gharial

     

    [wpdiscuz-feedback id=”981av4h59u” question=”Please leave a feedback on this” opened=”1″]Post your answers here.[/wpdiscuz-feedback]

  • Possible Uptick in Hangul Population in Kashmir

    hangul

    In the news

    • 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.

    About Hangul (Kashmir Stag)

    Details
    Scientific Name Cervus hanglu
    Habitat Dense riverine forests in high valleys and mountains of Jammu and Kashmir, northern Himachal Pradesh
    Geographic Range Endemic to Kashmir and surrounding areas
    Distribution
    • Primarily found in Dachigam National Park;
    • Small population in Overa-Aru Wildlife Sanctuary
    Conservation Status
    • IUCN: Critically Endangered
    • CITES: Appendix I
    • Wildlife (Protection) Act, 1972: Schedule I (highest level of protection)

    Threats to Hanguls

    • Predator Concerns: Hangul faces threats from predators like leopards and Asiatic Black Bears, necessitating further research and monitoring.
    • Environmental Challenges: Drying drainages and snowless glacial areas in Dachigam raise concerns about habitat sustainability, highlighting the impact of climate change.

    About Dachigam National Park

    • DNP boasts diverse flora and fauna, encompassing deep valleys, rocky outcrops, wooded slopes, and alpine pastures.
    • Spanning altitudes from 1600 m to 4200 m above sea level, the park is divided into upper and lower regions, each harboring unique ecosystems.
    • The park is home to a plethora of plant species, including wild cherry, pear, plum, walnut, oak, pine, and elm, fostering a biodiverse ecosystem.
    • Apart from hangul, the park supports a variety of wildlife, including musk deer, brown bears, leopards, Himalayan black bears, jungle cats, and species of wild goats like markhor and ibex.

    Try this PYQ from CSP 2012:

    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

    [wpdiscuz-feedback id=”6naow7100o” question=”Please leave a feedback on this” opened=”1″]Post your responses here.[/wpdiscuz-feedback]

  • Novel Behaviour of Elephants

    elephant

    In the news

    • A recent study aims to delve into the peri-mortem and post-mortem strategies of Asian elephants, offering insights into their behavior in shared human spaces amid environmental changes.
    • The study area covered fragmented forests, tea estates, agricultural lands, and military establishments in the vicinity of the Gorumara Wildlife Division and Buxa Tiger Reserve in West Bengal.

    Elephants in India

    Details
    Population Estimate India hosts the largest population of wild Asian Elephants (Elephas maximus), with around 29,964 individuals,

    Approximately 60% of the global population (2017 census).

    Leading States Karnataka holds the highest number of elephants, followed by Assam and Kerala.
    Conservation Status IUCN Red List:  Endangered.

    CMS: Appendix I.

    Wildlife (Protection) Act, 1972: Listed under Schedule I,

    CITES: Appendix I.

    Conservation Initiatives Project Elephant launched in 1992, covering 23 states across India.

    Contributed to the increase in wild elephant population from around 25,000 in 1992 to about 30,000 in 2021.

    Establishment of Elephant Reserves. Total 33 in numbers covering approximately 80,777 Sq.km.

     

    Recent findings

    • Peri-Mortem Strategies: Asian elephants were found to carry carcasses by trunks and legs before burying them in a ‘legs upright’ position.
    • Herding Behavior: Elephant herds exhibit avoidance behavior, choosing parallel routes to bypass paths where calf carcasses were buried.
    • Burial Locations: Calves were buried in irrigation drains of tea estates, indicating a preference for specific locations.
    • Herding Dynamics: The unique positioning of carcasses suggests careful handling by herd members, highlighting their care and affection toward deceased calves.
    • Space Constraints: Prioritizing the burial of the head before the feet indicates strategic decision-making in situations of spatial limitations.

    Environmental Context and Elephant Behavior

    • Impact of Environmental Changes: Rapid environmental transformations and habitat destruction push elephants to explore human-dominated areas, resulting in the emergence of novel behaviors.
    • Limited Documentation: While similar behaviors are documented in African contexts, elephant calf burial in the Asian context remains largely undocumented.

    General Social Behaviour of Elephants

    Elephants exhibit a wide range of social behaviors that highlight their complex and intelligent nature.

    • Matrilineal Social Structure: Elephants live in multi-tiered societies, starting with family units consisting of related females and their calves. These family units form bonds with other families, creating clans and sub-populations. The herds are led by a senior matriarch who makes decisions on movement and resources.
    • Communication: Elephants communicate through various calls, gestures, and physical contact. They have a sophisticated communication system involving over sixty different calls, including trumpets and rumbles that convey information across long distances.
    • Empathy and Mourning: Elephants display empathy by comforting distressed companions through physical contact and vocal sounds. They have been observed mourning their dead, showing behaviors akin to mourning seen in humans.
    • Cooperative Behavior: Elephant herds cooperate in raising their young, with adolescent females assisting in caring for calves. They also engage in cooperative actions like adopting an infant tormented by predators or helping wounded elephants by stopping bleeding and providing support.
    • Individual Personalities: Elephants have distinct personalities that influence their interactions within the group. Some elephants show strong leadership qualities, while others are more introverted. These individual traits impact how they interact with other elephants.

    Try this PYQ from CSP 2020:

    Q. With reference to Indian elephants, consider the following statements:

    1. The leader of an elephant group is a female.
    2. The maximum gestation period can be 22 months.
    3. An elephant can normally go on calving till the age of 40 years only.
    4. Among the States in India, the highest elephant population is in Kerala.

    Which of the statements given above is/are correct?

    (a) 1 and 2 only

    (b) 2 and 4 only

    (c) 3 only

    (d) 1, 3 and 4 only

    [wpdiscuz-feedback id=”qm37wm3jk” question=”Please leave a feedback on this” opened=”1″]Post your responses here.[/wpdiscuz-feedback]

  • India’s Leopard Population rises to 13,874

    leopard

    In the news

    • The Union Minister for Environment, Forest, and Climate Change, released the report on the Status of Leopards in India at New Delhi.

    About Indian Leopard

    • The Indian Leopard (Panthera pardus fusca) is a leopard subspecies widely distributed on the Indian subcontinent.
    • These are the smallest of the big cats.
    • They are known for their ability to adapt to a variety of habitats.
    • They are strong and agile predators that can climb trees and drag their prey up for safety.
    • Conservation Status:
    1. IUCN Red List: Vulnerable
    2. CITES: Appendix I
    3. Wildlife (Protection) Act, 1972: Schedule I

    About the Fifth Cycle of Leopards Estimation

    • The fifth cycle leopard population estimation was conducted by the National Tiger Conservation Authority (NTCA) and Wildlife Institute of India (WII), in collaboration with State Forest Departments.
    • It covered 18 States of India, and focused on about 70% of the animals’ expected habitat.
    • The estimation focused on forested habitats within 18 tiger states, covering major tiger conservation landscapes. Non-forested and high Himalayan regions were excluded.
    • A comprehensive foot survey spanning 6,41,449 km and camera traps at 32,803 locations resulted in 85,488 photo-captures of leopards, providing valuable insights into their distribution and abundance.

    Key Findings

    • Population Estimate: India’s leopard population is estimated at 13,874 individuals, signifying stability compared to the 2018 estimate. Notably, this estimation covers 70% of leopard habitat, excluding areas like the Himalayas and semi-arid regions.
    • Regional Trends: While Central India witnesses a stable or slightly growing population, regions like the Shivalik hills and Gangetic plains experience a decline. Overall, there’s a 1.08% per annum growth in sampled areas.
    • State-wise Distribution:  Madhya Pradesh houses the largest population of leopards in the country – 3907 (2018: 3421), followed by Maharashtra (2022: 1985; 2018: 1,690), Karnataka (2022: 1,879 ; 2018: 1,783) and Tamil Nadu (2022: 1,070; 2018: 868).
    • Habitats: Tiger Reserves or sites with highest leopard population are, Nagarajunasagar Srisailam (AP), followed by Panna (MP), and Satpura (AP).
    • Declining Trends: While Uttarakhand reported a 22% decline in the big cat numbers — reportedly due to poaching and man-animal conflict, Arunachal Pradesh, Assam and West Bengal saw a collective 150% rise to 349 animals.

    Try this PYQ from CSP 2012

    Q. 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

     

    [wpdiscuz-feedback id=”fipnp0iluh” question=”Please leave a feedback on this” opened=”1″]Post your response here.[/wpdiscuz-feedback]

  • Context Windows in AI Conversations

    In the news

    • In conversations with AI chatbots like ChatGPT, the text the AI can “see” or “read” at any given moment is determined by its context window.
    • The context window, measured in tokens, defines the amount of conversation the AI can process and respond to during a chat session.

    What are Context Windows?

    • Tokens: Basic units of data processed by AI models, tokens represent words, parts of words, or characters.
    • Tokenisation: The process of converting text into vectors (format suitable) for input into machine learning models.
    • Example: For English text, one token is roughly equivalent to four characters. Thus, a context window of 32,000 tokens translates to around 128,000 characters.

    Importance of Context Windows

    • Recall and Understanding: Context windows enable AI models to recall information from earlier in the conversation and understand contextual nuances.
    • Generating Responses: They help AI models generate responses that are contextually relevant and human-like in nature.

    Functioning of Context Windows

    • Sliding Window Approach: Context windows work by sliding a window over the input text, focusing on one word at a time.
    • Scope of Information: The size of the context window determines the scope of contextual information assimilated by the AI system.

    Context Window Sizes

    • Advancements: Recent AI models like GPT-4 Turbo and Google’s Gemini 1.5 Pro boast context window sizes of up to 128K tokens and 1 million tokens, respectively.
    • Benefits: Larger context windows allow models to reference more information, maintain coherence in longer passages, and generate contextually rich responses.

    Challenges and Considerations

    • Computational Power: Larger context windows require significant computational power during training and inference, leading to higher hardware costs and energy consumption.
    • Repetition and Contradiction: AI models with large context windows may encounter issues such as repeating or contradicting themselves.
    • Accessibility: The high resource requirements of large context windows may limit access to advanced AI capabilities to large corporations with substantial infrastructure investments.

    Conclusion

    • Context windows play a vital role in enabling AI chatbots to engage in meaningful conversations by recalling context and generating relevant responses.
    • While larger context windows offer benefits in terms of performance and response quality, they also pose challenges related to computational resources and environmental sustainability.
    • Balancing these factors is essential for the responsible development and deployment of AI technologies.
  • Melanochlamys Droupadi: New Sea Slug specie named after President Murmu

     

    President Draupadi Murmu

    In the news

    • The Zoological Survey of India (ZSI) announced the discovery of a new marine species, Melanochlamys droupadi, named after the esteemed President of India, Droupadi Murmu.

    About Melanochlamys Droupadi

    • Geographical Origin: Melanochlamys droupadi was first sighted off the shores of Digha in West Bengal and Udaipur in Odisha, marking its exclusive habitat.
    • Distinctive Features: Characterized by its short, blunt cylindrical body and smooth dorsal surface adorned with two unequal shields, this species showcases unique anatomical traits.
    • Morphological Identification: The species was meticulously examined for morphological, anatomical, and molecular characteristics, confirming its taxonomic classification within the Melanochlamys genus.
    • Physical Attributes: It is a small invertebrate reaching up to 7 mm in length, exhibits a brownish-black hue with a striking ruby red spot.
    • Biological nature: It is hermaphroditic (possessing both male and female reproductive organs, structures, and tissue) and predominantly inhabits intertidal zones along sandy beaches.

    Habitat and Reproduction

    • Ecological Niche: The species is typically found in the intertidal zone, leaving distinctive crawl marks along sandy beaches.
    • Reproductive Cycle: Reproduction occurs primarily between November and January, marking a critical phase in the species’ life cycle.

    Distribution and Taxonomy

    • Indo-Pacific Realm: While species of the Melanochlamys genus are predominantly found in temperate regions of the Indo-Pacific Ocean, Melanochlamys droupadi stands out as a truly tropical species.
    • Research Insights: A study conducted by ZSI researchers sheds light on the species’ behavior, highlighting its unique ability to secrete transparent mucus, forming a protective sheath against sand grains.