Neonicotinoids are very good at killing insects. In many cases they require only parts per billion, equivalent to a few drops of insecticide in a swimming pool of water.
Trees absorb CO₂ during photosynthesis, which is then metabolised and turned into organic matter that makes up nearly half of their overall mass. Urban trees are particularly effective at absorbing CO₂, because they are located so close to sources such as fossil fuel-burning transport and industrial activity.
A new phenomenon, urban heat islands in Jaipur indicate that the city has begun to witness the worst of climate change.
India needs to proactively include indigenous communities and forest dwellers in its efforts to restore and expand forest cover to sequester carbon, and not exclude them from forestry management.
In an extraordinary tale of community managed ecological restoration, the residents of Poi village near Kalyan in Maharashtra adopted a degraded forest and turned it into a lush haven of biodiversity.
New technologies are generating far more information than ever before to help scientists assess and predict the health and behaviour of species and ecosystems, as well as the threats they face.
The impact of air pollution on human health is well-documented. We know that exposure to high levels of air pollutants raises the risk of respiratory infections, heart disease, stroke, lung cancer as well as dementia and Alzheimer’s disease. But there is growing evidence to suggest that air pollution does not just affect our health – it affects our behaviour too.
Climate variability affects the psychological well-being of adults, especially the rural poor, reports new research on India, rekindling the debate over the complex interplay of factors that could trigger mental distress in people affected by a changing climate.
Alarmed by the threats from wind energy farms to birds, including migratory birds and raptors, a panel of forest experts of India’s environment ministry has now suggested a series of measures to be adopted by all the wind power companies in India for ensuring the protection of birds. For instance, it has suggested painting the vane tips of wind turbines orange, to prevent birds from flying into the turbines. The requirement for such measures has increased as the world is moving away from fossil fuel and towards renewable energy, mainly wind and solar power, to avoid the worst effects of climate change.
When governments restrict who can access data, or limit how people can use or redistribute it, that slows the progress of science. Now, as U.S. climate funding is under threat, it’s more important than ever to ensure that researchers and others make the most of the collected data.
Twenty-five Indian states/UTs now have some form of ban on polythene carry bags, but implementation is often lax, and plastic–which takes hundreds of years to decompose–continues to be used, which gathers in India’s water bodies and landfills.
Neglected ever since the days India’s first national forest policy, starting with the British Raj, these treeless, timber-free landscapes have been erroneously considered as wastelands. The Draft National Forest Policy 2018 also misses an opportunity to give importance to grasslands.
Visitors to the Sinharaja Man and Biosphere Reserve, Sri Lanka’s largest remaining primary rainforest, could easily miss the fact that adjoining the forest’s entrance is the old and thriving community of Pitekele. Yet on foot, it takes just a quick turn and a climb over a boulder or two to exit the UNESCO World Heritage Site and enter into this bucolic village landscape of fallow rice paddies, sprawling tea gardens, and homes surrounded by some of the most diverse, and biodiverse, gardens in the whole region.
The beginning of summer in India has arrived with a spate of forest fires across the country. Fires are raging in the dry deciduous forests of southern and western India. Sporadic fires have begun in the sub-tropical forests of the Himalayas as well.
There’s much more to snow crab than their tasty legs and claws. Especially so in the last few years as these large, cold water Arctic crabs have started showing up in the Barents Sea, where they’ve never been before. The snow crab’s story is a harbinger of climate change complexities on the horizon, and much more.
Scanty rainfall, depleting groundwater levels, barren farmlands and mass migration of farmers to cities for better livelihood – this is the reality of most of rural India today. Many parts of India are witnessing this growing trend of farmers leaving their lands in search of jobs in cities. Andhra Pradesh is no different with several districts of the state seeing a rising rate in outmigration of farmers. Around 4.87 lakh people are reported to have left Anantapur district as per last April’s count by the Alliance for Sustainable and Holistic Agriculture (ASHA), a pan-India confederation of farmers’ organisations. That’s more than 10 percent of the district’s population!
The settling of nearly 600,000 Rohingya refugees in a forested area has led to complete deforestation and precipitous drop in the water table, leaving the refugees deeply vulnerable and destroying a small ecosystem.
Research suggests that in some locations up to 40% of water is consumed by tourists. Tourists tend to splash out far more per day on average than local residents, who are often outcompeted by industry for water access. Using limited freshwater supplies to flush tourists’ toilets means less for residents’ drinking, cleaning and cooking needs.
Something unusual happened this year in the hills of Uttarakhand in northern India — the rhododendron bloomed in January. The blooming, celebrated as flower day (phool sankranti) across the Himalayan state, usually heralds the onset of spring. But the blooming of the flower two-three months early, due to an unusually warm spell, could be a result of climate change, some researchers say.
Animals that live in trees in the tropics are likely to be better at crossing mountains and dealing with climate change compared to ground-dwelling animals, a new study published in Frontiers in Ecology and the Environment suggests.
Till four decades ago, Ghaggar river in Haryana and Punjab was the lifeline of the villages along its course. Incessant dumping of sewage and industrial effluents, however, has choked the life out of it and has reduced it to a drain or nullah, as locals call it, now. Its water has become unusable and those who come in contact with it, mostly farmers, contract skin ailments. Water-borne diseases such as jaundice and diarrhoea are common in settlements along the Ghaggar. Early greying of hair in children is another disturbing trend. Even the underground water has turned black or yellow in many places.
Thanks to movies and nature videos, many people know that bizarre creatures live in the ocean’s deepest, darkest regions. They include viperfish with huge mouths and big teeth, and anglerfish, which have bioluminescent lures that make their own light in a dark world. However, the world’s deepest-dwelling fish – known as a hadal snailfish – is small, pink and completely scaleless. Its skin is so transparent that you can see right through to its liver. Nonetheless, hadal snailfish are some of the most successful animals found in the ocean’s deepest places.
The Nilgiris district, part of the 5,520 sq. km Nilgiris Biosphere Reserve, is a UNESCO World Heritage Site and a biodiversity hotspot. The district has an average elevation of 1,800 metres above sea level and is defined by its evergreen shola forests and montane grasslands. The region was mostly untouched till two centuries ago, but has witnessed large-scale destruction ever since.
Some birds in Australia use smoldering sticks to spread wildfires and flush out smaller birds, insects, frogs and other prey, according to a recent study published in the Journal of Ethnobiology. This fire-spreading behavior isn’t a new discovery, the authors of the study say. Australia’s indigenous peoples have long spoken of “firehawks” — a generic term for the black kite (Milvus migrans), whistling kite (Haliastur sphenurus) and brown falcon (Falco berigora) — intentionally spreading fires in the country’s tropical savannas. But much of the examples remain fragmented.
With the farming season limited to just four months in Ladakh, villagers have turned to innovative, low-cost technologies to grow vegetables in winter that improves diets and boosts incomes, but smallholder farmers need post-harvest support.
The Great Indian Bustard is classified as “critically endangered”–just short of extinction–in the International Union for Conservation of Nature’s (IUCN) Red List. Like the tiger, the bustard is supposed to be protected as a “schedule I species”–endangered, threatened or of special concern–under India’s Wildlife (Protection) Act, 1972. But the bustard isn’t as well known as the tiger, and it lives in areas where its life is in growing conflict with human development. The main threat to the bustard comes from an ironic source: Renewable energy.
In recent years, great advances have been made tracking animals (including sharks) with electronic tags, but it remains very expensive and relatively few animals have been tracked. Not only that, but knowing where a shark is doesn’t necessarily tell you why it is there. A team of 73 scientists from 21 countries came together to use chemistry to try a different approach to these burning questions.
Bacteria that have become resistant to one or all known antibiotics called superbugs, could multiply more rapidly in India because of climate change, low access to sanitation and toilets, lack of wastewater treatment, no regulations for antibiotic release in pharmaceutical wastewaters and indiscriminate use of antibiotics among the public. India is among the countries with the highest bacterial disease burden in the world, and thus the consequences of ABR could be devastating.
She wakes up at 5am when it is still dark and the rest of the family is asleep. She walks 4 km to reach a hillock and starts gathering firewood. By daybreak, she is back and starts cooking for the family. What about water for cooking? That involves another trek.
Vast swaths of the world’s oceans are turning into “dead zones” as global warming and pollution strips them of oxygen, threatening marine life on a massive scale, a new study shows. The analysis, which reviews the major research on ocean oxygen loss, is the first to investigate the causes, consequences and solutions to low oxygen concentrations in the open oceans and coastal waters.
Rising air pollution in a metropolis such as Delhi and smaller cities such as Ranchi are leading to rising incidences of chronic obstructive pulmonary disease (COPD), cancer, diabetes and other pollution-related ailments, the study found.
The fields are silvery white with raw salt crusts in the vicinity of Nawa, a small town on the northwestern banks of Sambhar lake, India’s largest inland lake. Nawa lies about 90 kilometres east of Jaipur. Also an extensive saline wetland and a Ramsar site, the blinding white salt flats stretch as far as one can see. The place is a key wintering area for thousands of pink flamingos and other migratory birds from northern Asia and Siberia.
The U.S. is quitting UNESCO, the United Nations organization that coordinates international efforts to foster peace and sustainable development, and to eradicate poverty. The Trump administration made the announcement on 12 October. The withdrawal takes effect December 31, 2018, and the U.S. will remain a full member until then.
Self-driving cars will change how we live, in all sorts of ways. But they won’t just affect us humans – the coming revolution in autonomous transport has significant implications for wildlife as well. Nature conservationists and planners need to think hard about the impact of driverless vehicles, most notably in terms of renewed urban sprawl.
Nestled among fields of mango, cashew, coconut and areca palms, and dotted with houses roofed with Mangalore tiles in between, bamboo vies for attention in Pinguli village in Kudal taluk. Grown in homesteads till now, it has started making its presence felt in farm plots as well. The scene is similar in Kolgaon, Hirlok, Ranbumbuli and Konal villages, all in different administrative divisions of Sindhudurg district.
On April 16, Roshan Lal Negi woke up to find snow carpeting the courtyard of his home in Jangi village. Boys with smartphones quickly made videos to share on WhatsApp but more than a month later, the dusty snow still sits on the lower parts of most peaks in Kinnaur district, Himachal Pradesh. Particles from a dust storm in the northern plains might have travelled to Kinnaur and mixed with the unseasonal snowfall, suggests Dr Manmohan Singh, director of the meteorological centre in Shimla, giving the dusty appearance. The jury is still out, but most agree that this rain shadow region is experiencing a drastic shift in its weather patterns. Rains are increasing, snowfall is declining, and temperatures are rising, which all have great impacts on an area prone to landslides and fed by glacial melt.
Airlines are under pressure to reduce their carbon emissions, and are highly vulnerable to global oil price fluctuations. These challenges have spurred strong interest in biomass-derived jet fuels. Bio-jet fuel can be produced from various plant materials, including oil crops, sugar crops, starchy plants and lignocellulosic biomass, through various chemical and biological routes. However, the technologies to convert oil to jet fuel are at a more advanced stage of development and yield higher energy efficiency than other sources.
Located just three km from the Hindu shrine of Badrinath, Mana is the last village near the India-China border. At a height of over 3,000 metres, Mana is a special attraction for pilgrims and tourists alike. Known for its condiments, handicraft and herbal tea, the village also has something special to offer. It is the gateway to an arduous walk to two important Himalayan glaciers — Satopanth and Bhagirath-Kharak. With enthusiastic trekkers trickling in, Mana remains abuzz for at least six months from May to October. However, these two glaciers are retreating, slowly and continuously.
Skyrocketing demand, combined with unfettered mining to meet it, is creating the perfect recipe for shortages. Plentiful evidence strongly suggests that sand is becoming increasingly scarce in many regions. For example, in Vietnam domestic demand for sand exceeds the country’s total reserves. If this mismatch continues, the country may run out of construction sand by 2020, according to recent statements from the country’s Ministry of Construction.
As time progressed, Baiga Chak–the officially recognised traditional habitat of the Baiga tribe known for its myriad species and their inclusion in the local diet, lifestyle and healthcare–started losing its biodiversity. A nonprofit, the National Institute of Women, Child, and Youth Development (NIWCYD), established “forest study groups” in various villages in 2005. The approach was unique: Instead of getting experts to research on the changing ecosystem, villagers were trained not only to analyse the situation but also to suggest conservation plans.
In short, they were to become citizen scientists.
Populations of bees, bats, butterflies and other pollinators have been declining for decades due to habitat loss, disease, pesticides and climate change. Now, scientists have documented yet another threat to pollinators: night-time light pollution.
In a recent study in Nature, ecologists showed that plants growing near streetlights were pollinated far less often at night and produced fewer fruits than their unilluminated counterparts. In turn, this may compromise the efficiency of daytime pollinators in the same fields, the authors conclude.
Rathnakar Salian is a traditional catamaran fisherman from Sasihitlu village in Mangaluru district of Karnataka. He learned how to throw the net, how to pull it out, and how to look for fish in the sea from his father and uncles. Using small catamarans that can carry four persons and their limited gear, he fishes by the coastline, not going deeper than one nautical mile. The waters he fishes in is the point at which the west-flowing Netravati river joins the Arabian Sea.
In the hot, arid grasslands of central and western India, a volley of birdsong is not always what it seems. It may not be a flock of different birds, but just a diminutive, brown one, soaring into the air, hovering and delivering a fusillade of calls. It could be the call of a male Sykes’s lark (Galerida deva), which has the ability to mimic many other birds while serenading its partner.
Despite good intentions to rebuild Nepal to be more resilient, 30 months on little progress has been made. Of more than 400,000 homes that were earmarked for reconstruction, only 12% have been rebuilt. Little of the US$4.4 billion in aid pledged for reconstruction has been disbursed. The Nepali government instituted a reconstruction program in October 2015 that identifies beneficiaries and entitles them to three instalments of compensation. The payments are dependent on progress and building code compliance. Those who do not own land are locked out of reconstruction support.
Light pollution is an outcome of the excessive use of artificial light at night. This “loss of night”, as Christopher Kyba, 39, a Canadian-born physicist and the lead researcher of the study calls it, poses a significant health risk to humanity and is impinging on the habitat of nocturnal animals. India is losing its night more than three times faster than the global average. Between 2012 and 2016, the study period, India’s area exposed to light pollution grew by a third, Kyba told IndiaSpend in the course of a Skype interview.
Kashmir Valley, with huge resources available, especially vast tracts of horticultural land, has a great potential for beekeeping and exporting honey to different Indian states. This has prompted the agriculture department of Kashmir to promote beekeeping in the region. Horticultural farmers who took to beekeeping are reaping rewards for their efforts. Apiary business has also given rise to successful processing units.
Geothermal energy is not new to India. As early as 1973, the Indian government submitted a report on geothermal hotspots of the country. This happened after the Geological Survey of India (GSI) performed shallow drilling exploration, which showed the potential hot springs and geothermal locations. It is estimated that India has the potential to generate 10 GW of geothermal power.
By 2040, there will be 9 billion people in the world. ‘That’s like adding another China onto today’s global population,’ said Professor Sophien Kamoun of the Sainsbury Laboratory in Norwich, UK. Prof. Kamoun is one of a growing number of food scientists trying to figure out how to feed the world. As an expert in plant pathogens such as Phytophthora infestans – the fungus-like microbe responsible for potato blight – he wants to make crops more resistant to disease. Potato blight sparked the Irish famine in the 19th century, causing a million people to starve to death and another million migrants to flee. European farmers now keep the fungus in check by using pesticides. However, in regions without access to chemical sprays, it continues to wipe out enough potatoes to feed hundreds of millions of people every year.‘Potato blight is still a problem,’ said Prof. Kamoun. ‘In Europe, we use 12 chemical sprays per season to manage the pathogen that causes blight, but other parts of the world cannot afford this.’
While the world has been preoccupied with reducing carbon dioxide in the atmosphere, which is generated by burning fossil fuels, sulphur dioxide (SO₂) emissions have not received the same attention. Produced by burning coal, wood, petrol, diesel or farm stubble, SO₂ forms a large part of the pollution haze enveloping cities in northern India every winter. Most of the SO₂ in Indian skies is emitted when power plants burn coal to produce electricity. Typically, coal contains 3% of sulphur, but coal from Assam in India is known to have higher content.
It is commonly believed that mechanised harvesting of the rice crop creates stubble. Combines, the machines used to harvest, thresh and clean grains, cannot cut the crop close to the ground the way manual harvesting can. If you put the average height of a paddy plant at 100 cm, this generates 50 cm of loose straw and 50 cm of standing stubble. Is this true?
The Pantanal is the world’s largest tropical wetland and covers an area slightly larger than England. It lies mostly on a huge floodplain at the foot of Brazil’s southwestern highlands, but a fraction also spills over into Bolivia and Paraguay. In the wet season, from October to April, water washes down from those highlands bringing with it nutrients and fish and leaving most of the region underwater. When the rains finish, and the ground dries up, the landscape changes once again. Seasonal variation on such a massive scale means the Pantanal contains a diverse range of plants and animals that have adapted to thrive in standing water or waterlogged soil. The region is home to more than 1,000 bird species and 300 mammals including the jaguar, capybara, giant otter and tapir.
Conservationists rely on a semi-synthetic opioid called Etorphine HCl to tranquillise rhinos for veterinary care, translocation and other critical interventions. Shortage of this drug is already holding up translocation plans in several protected areas and preventing veterinarians from caring for injured animals.
Oddly enough the largest decline in status seems to have happened in Europe, with seven sites showing a decline. In Asia no site showed a decline, and for India there was a special bonus as both the Kaziranga National Park and the Sundarbans National Park were upgraded from the “significant concern” category to the “good with some concerns” group (It is worth noting that the Bangladeshi part of the Sundarbans remains in the “significant concern” category). Africa, too, saw a general uptick in the overall situation of its sites. It is striking that it is not the richest areas that have improved their ranking, although North America remains the region with the highest number of sites (90%) in the good or good with some concerns category.
Germany’s flying insect biomass has dropped 76 percent in the past 27 years, according to a study published last week in PLOS ONE. The findings have stunned biologists around the world and are prompting concern about potentially disastrous ecological consequences as another study finds the country lost 15 percent of its birds in just over a decade. The study was conducted by researchers at institutions in Germany and the Netherlands. Over the course of nearly 30 years, they collected flying insects within protected areas in lowland western Germany by trapping them with mesh tents that funnelled into bottles of alcohol. They then measured the biomass – basically, the combined weight – of the insects to see how it changed from year to year.
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