Environment & Biodiversity Current Affairs MCQs

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The first No Objection Certificate (NOC) has been issued through the new Digital Portal for National Waterways to develop a jetty at Malim on River Mandovi. Mandovi River, also called Mahadayi or Mhadei, is known as the lifeline of Goa. It merges with the Zuari River and both flow into the Arabian Sea, forming the Mormugao harbour. The river starts from around 30 springs at Bhimgad in the Western Ghats, located in Belagavi district, Karnataka. Famous waterfalls on the river include Dudhsagar and Varapoha, and an important tributary is the River Mapusa.

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Recently, bioluminescent blue waves appeared in the backwaters of Kochi, Kerala, drawing tourists but causing concerns about environmental degradation among ecologists and fishers. Bioluminescence is the natural light produced by organisms like bacteria, fungi, and algae when coastal waters are disturbed. The main cause of this glow is Noctiluca scintillans, a type of plankton known as “sea sparkle”. This glow happens due to chemical reactions in parts called scintillons, and it is usually blue but can appear red or brown depending on the plankton’s concentration. The phenomenon is most commonly seen between March and May, known locally as “Kavaru” in Malayalam.

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Farmer leaders, environmentalists, religious heads, and advocates are protesting the proposed Bandura Nala water diversion project in the Mahadayi River basin. The Mahadayi River, also known as Mandovi or Mhadei, is a rain-fed river shared by Karnataka and Goa for their water needs. It originates from Bhimgad Wildlife Sanctuary in the Western Ghats of Karnataka, flows briefly through Maharashtra, and then enters Goa, where it empties into the Arabian Sea at Panaji. Out of its 111-km total length, about 76 km lies in Goa. Important tributaries include Rogaro, Kushavati, Nanorem, Nanuz, Valvota, and Mapusa. The river also hosts the Salim Ali Bird Sanctuary on Chorao Island, and the towns of Panaji and Old Goa lie on its left bank.

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Asiatic lions, also called Persian Lions or Indian Lions, belong to the subspecies Panthera leo persica and are found only in India, mainly in Gir National Park, Gujarat. Once spread across West Asia and the Middle East, they are now extinct outside India, making Gir their last home. As per the 2020 lion census by the Gujarat Forest Department, there are 674 lions across 30,000 sq km in nine districts and 53 talukas of Saurashtra. Lions are now moving beyond Gir, even reaching Diu Island, showing healthy range expansion. International Union for Conservation of Nature (IUCN) has listed them as Endangered since 2008, improved from Critically Endangered in the 1990s due to successful conservation.

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Forest fires recently broke out in Phawngpui National Park in Mizoram, damaging nearly one-ninth of its total area, according to state forest officials. Phawngpui National Park, also called the Blue Mountain National Park, is in the southeastern corner of Mizoram, close to the India-Myanmar border. It is the highest peak in Mizoram, with an altitude of 2,157 meters above sea level. The park covers 50 square kilometres, overlooks the Chhimtuipui River, and offers views of Myanmar’s hill ranges.

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A rare golden tiger, also called a golden tabby tiger, was recently seen and photographed in Kaziranga National Park in Assam. The golden tiger is not a separate subspecies but a rare colour variant of the Bengal tiger caused by a genetic mutation. This mutation affects the production of black pigment, giving the tiger a pale golden coat with light orange stripes. Only four golden tigers are known to exist in the wild, and all are found in Kaziranga National Park. Their presence highlights the rich biodiversity and conservation success of the park.

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Similipal has been declared a national park by the Odisha government. Similipal is now the 107th national park in India and the second in Odisha after Bhitarkanika. Similipal is also the largest national park in Odisha and part of the Similipal Tiger Reserve (STR) spread over 2,750 square kilometres. The park is rich in biodiversity with 55 species of mammals, 361 birds, 62 reptiles, and 21 amphibians.

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The Critical Tiger Habitat (CTH) of Sariska Tiger Reserve (STR) is set to expand by about 4,500 hectares, following a rationalisation exercise ordered by the Supreme Court of India’s Central Empowered Committee (CEC). CTHs, also known as core areas of tiger reserves, are designated under the Wildlife Protection Act (WLPA) of 1972. Sariska Tiger Reserve is located in the state of Rajasthan, India. It is spread across the Aravalli mountain range, the world’s oldest mountain range, covering an area of 800 square kilometers.

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A new project called SeaCURE has begun on the south coast of England to remove carbon dioxide from the sea. The SeaCURE project is an initiative of the United Kingdom (UK) government. The SeaCURE project is testing if taking carbon directly from seawater can be a low-cost and large-scale way to cut down carbon dioxide in the air. This method is different from usual carbon capture techniques that focus on emissions at their source or pull carbon dioxide from the air. SeaCURE targets the ocean, where carbon levels are up to 150 times higher than in the atmosphere.

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A recent census shows that Sanjay Gandhi National Park (SGNP) in Mumbai is home to at least 54 leopards, showing how wildlife can coexist with urban life. SGNP is a large protected area near Borivali, in the northern part of Mumbai, Maharashtra. It spreads across both Thane District and Mumbai Suburban District. Earlier known as Krishnagiri National Park, it was renamed Borivali National Park in 1974 and later Sanjay Gandhi National Park in 1981 to honour Sanjay Gandhi. It covers an area of 103 square kilometres, making it one of the largest parks within any city in the world. The park houses the ancient Kanheri Caves, carved by Buddhist monks between the 1st and 10th century CE.