Environment & Biodiversity Current Affairs MCQs

Notes:
Bihar government approved a revised proposal to notify Kaimur Wildlife Sanctuary as a Tiger Reserve. The proposal will be sent to the National Tiger Conservation Authority (NTCA) for final clearance. Kaimur Wildlife Sanctuary is the largest sanctuary in Bihar with rich biodiversity and dense forests. It is located in Kaimur and Rohtas districts within the Kaimur Range. The area covers parts of the Kaimur Plateau and Rohtas Plateau.

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A powerful winter storm rapidly intensified into a bomb cyclone named Winter Storm Ezra across the United States of America (USA). More than 58 million people were under winter storm warnings, with blizzards, strong winds, and power outages. A bomb cyclone forms when atmospheric pressure drops sharply within 24 hours, causing extreme weather. Authorities warned against travel as hazardous conditions continue moving eastward.

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Recently, an Eastern Imperial Eagle was confirmed visiting Mudumalai Tiger Reserve during the winter migratory season. The scientific name of the Eastern Imperial Eagle is Aquila heliaca. The species breeds in southeastern Europe and across West and Central Asia, with most populations migrating to northeastern Africa, the Middle East, and South and East Asia during winter. It is the second largest eagle in Europe, reaching about 0.92 meters in length, a wingspan of approximately 2.14 meters, and a weight of around 3.6 kilograms. According to the IUCN Red List, the Eastern Imperial Eagle is classified as Vulnerable.

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The Chadar trek on the frozen Zanskar River in Ladakh was postponed due to weak ice formation, disappointing adventure tourists. The Zanskar River is a major left-bank tributary of the Indus River and flows entirely within the Union Territory of Ladakh. It drains the remote and cold Zanskar Valley in the north-western Himalayas. The river originates at high Himalayan ranges from two main branches. One branch is the Doda River, rising near Pansi La Pass. The other branch forms from the Kargyag River near Shingo La and the Tsarap River near Baralacha La. It flows north-west and joins the Indus River near Nimmu at about 3,100 metres elevation.

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A forest fire has been raging for five days in the Valley of Flowers, a United Nations Educational, Scientific and Cultural Organization (UNESCO) World Heritage Site, prompting Uttarakhand authorities to seek Indian Air Force (IAF) assistance. The Valley of Flowers National Park is located in Chamoli district of Uttarakhand and covers about 87 square kilometres. It was discovered in 1931 by British mountaineers led by Frank S. Smythe. The park is a core zone of the Nanda Devi Biosphere Reserve along with Nanda Devi National Park. It forms a transition zone between the Zanskar and Great Himalayan ranges. The area is famous for alpine meadows, rich biodiversity, scenic beauty, and snow-covered Himalayan peaks.

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The Miyawaki method is increasingly used in cities where green cover has declined over decades, and it is often seen in recent urban greening drives. It is an afforestation technique developed in the 1970s by Japanese botanist Akira Miyawaki. Trees and shrubs are planted very close together, also called the pot plantation method. Only native species are planted, creating a resilient and balanced ecosystem. Forests grow nearly 10 times faster and become very dense with high biodiversity. Recent municipal projects have used this method to convert polluted and barren urban land into green spaces, reducing pollution, improving soil, and enhancing ecological balance.

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The red-eared slider turtle, spread through the pet trade, is threatening freshwater bodies in Coimbatore. It is among the world’s most widely introduced freshwater turtles, found on all continents except Antarctica. This predominantly aquatic species is identified by red stripes behind each ear. It is highly adaptable, survives harsh conditions, and thrives in non-native habitats. It lives 20–50 years in the wild and is listed as Least Concern by the International Union for Conservation of Nature (IUCN).

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Amid controversy over reducing its boundary, the Forest Minister recently visited Shettihalli Wildlife Sanctuary to assess the situation. The sanctuary is located in Shimoga (Shivamogga) district of Karnataka and covers about 395.6 square kilometres. The Tunga Anicut Dam lies within the sanctuary and supports otters and several water bird species. Mandagadde Bird Sanctuary is part of Shettihalli and is a major bird nesting site on an island in the Tunga River. The area has tropical evergreen, semi-evergreen, dry deciduous, and moist deciduous forests.

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Scientists from the Botanical Survey of India (BSI) discovered a new flowering plant species named Dicliptera pakhalica. The discovery was made in Pakhal Wildlife Sanctuary located in Warangal district of Telangana. The sanctuary is dominated by mixed deciduous forest vegetation. The area has rich plant diversity including bamboo and teak trees.

Notes:
Scientists warned that the Thwaites Glacier is melting rapidly due to human-induced climate change. It is a massive glacier in West Antarctica, often called the Doomsday Glacier. The glacier is very wide and fast-flowing, roughly the size of Florida or Great Britain. It is extremely important because it already contributes about 4% to global annual sea-level rise. Studies show it is thinning, retreating, and adding more meltwater to the oceans. If it collapses, it could destabilise the West Antarctic Ice Sheet, causing severe sea-level rise.