Sunday, December 23, 2018
Friday, December 14, 2018
PTJ redux
Beautiful capture of Jacanas with a new born chick by Mr Ramanan. Mr Ramanan's photo essay from the 2017 breeding season is here.
I went looking for them a few days later with Sheila, and while we did not see the eggs (they had probably all hatched), we saw what was in all likelihood, the third chick.
When we reached, we heard the male PTJ calling in agitation and looking eft and right. It appeared that he was calling the chicks. Initially, we saw a slightly larger chick, which subsequently we did not see at all. (I have read that when they hear an alarm call from the parent, the chicks hide under a floating leaf. I wonder if that is what it did!
We did spy a littler chick, unsteady on his feet, which seemed to follow the parent, and I marvelled at how they stayed afloat and knew instinctively that they had to put their feet on the leaves and not in the water. All the time we were there, it was not fed by any parent, unlike other bird chicks, who are constantly crying for food.
I was dismayed at the amount of construction that is going on in the marsh.
Its a completely bizarre and distressing site. There are homes, apartments even, and raised roads, while all the empty plots are filled with water, reeds and remnants of marshland. It seems insane to come and build here, and even more insane to buy and live here.
Saturday, December 8, 2018
The birds are returning to Arunachala
... Enough to warrant a book.
Arun is the kind of modern super hero the world needs. A green warrior who has let his actions speak. And Chennai's loss is Tiruvannamalai's gain. He has mobilised and focussed native tree replanting on the hill, along with the prompt dousing of forest fires, and the results are beginning to show, as a forest and an ecosystem comes back to life.
And the returning birds have played their part, dispersing seeds and exponentially leading to forest revival.
The book, published by The Forest Way Trust this year on recycled paper, lists over two hundred species of birds that now can be seen in a 10 km radius around the hill and in the water bodies. The restoration has been supported by the district administration as well.
Hearing Arun speak about the revival of streams, the local communities working to put out the fires and the survival rate (some 1%) of planted trees, brings home the efforts that have led to this.
In the Introduction to the book, is a paragraph that I particularly like:
But while we humans may feel proud of our efforts to reforest the mountain, thinking that we have proved a home for birds in the process, the truth is that birds themselves have done far more to reforest the Hill than us. Many of the trees that we see now growing on the mountains were not planted, but came naturally, and it is often the birds that spread the seeds. And because they can fly, it is possible for birds to bring seeds a good distance from other forest areas, thus increasing the plant diversity of each place. With this, many forest birds not seen here in living memory, have made their return, like the wonderful Racket-tailed Drone. This is the most important lesson that we all must learn from nature; that other animals live their lives while making their home a better place for other life too.
All the original artworks in the book are photographs of paintings dome by Tiruvannamalai artist Kumar on limestone slabs in the Arunagiri Forest Park, at the base of Arunachala. |
The book introduces Kumar, who began his association in the project as an artist painting birds, and has now become an expert birdwatcher. |
Thursday, December 6, 2018
Louvre Abu Dhabi again
Continued from here.
The marble bust of a bedouin chief stared gravely down upon me. I loved the careless folds of his shawl |
What are the odds of coming across 9,000 year old neolithic statues from Ain Ghazal in two museums in two different countries? I had just beaten those odds. I had seen them at the antiquities museum at Jordan and now here again I was face-to-face with the two-headed beauties. |
Portrait of King Louis XIV, Rene-Antoine Houasse, oil on canvas, 1674 |
A Chinese dragon, A Chola beauty and a prince from Lagash
This bronzed winged dragon from the 3rd century BC was a beauty |
... as was this Chola bronze, |
The floor was cross-crossed with a place-names map |
"Young Emir Studying" - Osman Hamdy bey, from Istanbul in 1878 |
On loan from the Musée d’Orsay:Vincent Van Gogh’s Self Portrait, 1887 |
Edouard Manet - one of his Gyspy series |
Hans Holbein's portrait of Sir Thomas Wyatt |
Matisse |
Kandinsky |
Piet Mondrian caught my eye because of my aunt |
"The Residence of a Sugarcane planter in Brazil" - by the Dutch painter Frans Post, reminded me of home. |
And the three W's - Walden, Warhol and the Whistler
The Docks of Cardiff - Lionel Walden. I loved this one. |
"Big Electric Hair" - Warhol, again this is a series, in many colours. |
Whistler's Mother |
A Koran and a Tora sat close to each other.
Chinese screens |
And Japanese ones too |
Egyptian frieze |
An Islamic frieze of Quranic verses in sandstone , from the Ghazni empire, about AD 1200 |
And Durga, Krishna and Maithreya too
The description read, "Between the 5th and 15th centuries, India was a leading creative centre in the domain of religious sculpture. The lives of venerated individuals were illustrated in works produced to accompany the spread of Buddhism and Hinduism into Central Asia, and from South-East Asia, into China, Korea and Japan. Their purpose was to encourage meditation by devotees and their encounter with the divine."
A Chola dynasty granite Durga, 12th century |
A Krishna painting - supposedly they have a 150 Krishna paintings, which they will display in rotation!! |
Maithreya, from the Gandhara period. |
So much more - The Horses of the Sun, Cy Twombly's series in blue, Alexander the Great's bust (what's remaining of it actually), cuneiform, Isis, Chinese pottery, Japanese Edo paintings of Mt Fuji.....
I would love to go back, potter around the Cosmology gallery a bit more maybe, see the Bactrian princess again, and my little female statuette from south America ... and probably Salvatore Mundi will be displayed.
I would love to go back, potter around the Cosmology gallery a bit more maybe, see the Bactrian princess again, and my little female statuette from south America ... and probably Salvatore Mundi will be displayed.
Wednesday, December 5, 2018
Peaceful exhilaration
Today, I visited my mother's garden for a special reason. The Horse Tail creeper is in bloom and that is an annual event not to be missed, for it is brief, spectacular and never fails to delight me.
For 350 days in the year, the vine is like a dark green curtain, cocooning my parents from the squat cement wall of the neighbours. And then for a couple of weeks every year, the vine blooms. And how!
Usually, the two weeks are in January, sometimes even February, but here we are this year, in December, with a poor monsoon, and some clock in the plant has struck the blooming hour.
Until next season then, I bade goodbye to the blooms.
For 350 days in the year, the vine is like a dark green curtain, cocooning my parents from the squat cement wall of the neighbours. And then for a couple of weeks every year, the vine blooms. And how!
Usually, the two weeks are in January, sometimes even February, but here we are this year, in December, with a poor monsoon, and some clock in the plant has struck the blooming hour.
Porana volubilis, of the Convolvulaceae family - Horse tail creeper in bloom |
Do the bees feel the awe and delight that I do, I wondered as I quietly watched them flit from flower to flower. Somewhere, a honeycomb was being filled with sweet nectar from my mother’s garden. |
Exuberant bunches, swathes of white, sweet fragrance, the drama of it all. |
The softly falling petals. So much beauty. So temporary. So mortal. In a few days, maybe even tomorrow, they will be a memory. |
The wild mallow seemed to keep a watch. |
Thursday, November 8, 2018
Trees in our cities
Watch: Off Centre With Pradip Krishen:News18 Videos
I wish that we could translate this interview into all the main Indian languages and get more people to listen to this simple, convincing dialogue about -
Krishen, an environmentalist, is the author of Trees of Delhi
I wish that we could translate this interview into all the main Indian languages and get more people to listen to this simple, convincing dialogue about -
- how we citizens need to protect our forests and tree cover, and ensure better governance and urban planning
- how future afforestation in order to cut trees for development doesn't make sense.
- what is a native species and why that's good to plant
- how plantation forestry has weakened and destroyed mixed deciduous forests, and are continued by the forest dept
Plain tales from the hills
Delhi’s bad air is an opportunity to underline linkages between the degradation of the Aravallis and the need for good legislation.
I spent a considerable part of 2018 driving across Rajasthan searching for specimens of rock to take back as exhibits to Jaipur. Rhyolite, granite, sandstone, ironstone, stromatolitic phosphate, rippled quartzite — these were some of the specimens I was looking for. This doesn’t make me an expert on rocks or mining but I did gain some perspective on the disappearing hills of the Aravallis.
It’s true, the hills are melting away before our eyes. About 50 km before you reach Jaipur on NH 8, you drive past an imposing hill of quartzite looming over a small hamlet called Deo ka Harmara, near Chandwaji. Like a giant cone of shawarma, the rock is being pared away layer by layer and eventually ground into gravel-sized stones to be used for road-building. I have watched it shrinking by noticeable increments each time I drove past and regret that I didn’t photograph it to record its deconstruction in time-lapse. This is not an illegal mining operation, just one of hundreds of tekra outcrops that are being dismantled and crushed for roadworks all over Rajasthan, and no doubt, elsewhere in this country.
Mining is big, easy money in Rajasthan today. The state boasts a long list of valuable minerals hidden in its hills and below ground — zinc, silver, uranium, copper, limestone, some of the most colourful marble in the world, mica, dolomite — but I don’t think that all of these minerals add up to a tenth of what is actually mined in small, reckless, fly-by-night operations. Most of the mining is about relatively less-valuable Aravalli quartzite and granite. Or drive out in almost any direction from Jaisalmer town and the stony ground is pitted and broken by shallow digging for the ochre limestone that lies exposed on the surface. There is no reason to doubt that someone needs to restrain the unregulated digging and looting of rocks and minerals before Rajasthan disappears down a large dusty hole of its own making. But what a shame that it has to be the Supreme Court that steps in and not an enlightened and concerned state government.
Countries like South Africa and Australia, which do a colossal amount of mining have their problems too, but they have evolved policies that address important issues of how to steer a course between challenge and opportunity. It can be nobody’s case that mining is all bad and should be banned — these countries recognise that along with economic benefits and employment, mining threatens to severely pollute and degrade the environment and have created strong regulatory regimes to encourage compliance with environmental and mitigatory rules.
Why do we find it so difficult to do anything like this in India? Part of the problem is a lack of probity and enforcement, because there are rules and regulations in place although no one can seriously argue that the rules have been framed with any serious intent or rigour. Naam ke vaaste is the name of the game.
This applies all around, to every parameter of the environment in this country. Whether we look at the quality of water in our rivers and lakes, at the contamination of fossil water in our aquifers, at the fouling of the air or the stripping of topsoil from fields, at pesticide residues in our food, at natural old-growth forests and wilderness being lost — and this is by no means an exhaustive list — it is painfully evident that India has simply not summoned up the will to enact and enforce regulations to curb degradation. No aspect of the environment figures in the election planks or promises of any political party. Maybe it is foolish or at best naïve to expect environmental legislation to arrive unbidden from our legislatures. Maybe it needs a groundswell of public support and pressure for any of this to happen — just like it needed insistent demand from the outdoor recreational angling community to push through the Clean Water Act in the US.
The trouble with hoping for or expecting significant public support for these issues in India is that they it tends to attract the attention of small communities who are easily brushed aside as being “elitist”. The environment is not likely to attract sufficient support on a large enough scale until its downside effects are seen to impact significantly on health or mortality. This is where Delhi’s filthy air seems to represent a real opportunity to mobilise public opinion and recruit support for a better environment all around.
It may seem tragic and ironic that the National Capital Region’s dreadful plight is seen as an opportunity, but this is the sad reality in India today: It is the first high-profile crisis we have faced that everyone recognises is squarely an environmental one. More, it is seen as having a set of discrete, preventable causes and even if everyone doesn’t agree about how to ameliorate the situation, everyone does agree that it can be mitigated by a set of measures that curbs some things and outlaws others. Realistically, this is how environmental intervention in public life is likely to take place in this country — as a response to widespread public perception and concern by enacting laws and putting in place restrictions in order to bring about change for the better.
It is in this sense that Delhi’s bad air presents itself as an opportunity to underline linkages between the degradation of our air, soil, food and water, and the need for good legislation, and indeed, better enforcement of such legislation. I expect Delhi’s crisis to usher in a new general understanding of how important it is to protect our environment. I expect that political parties too, will start talking about environmental issues. The sad truth is we sometimes need to come to the very brink before we pull back and learn to act sensibly.
Krishen, an environmentalist, is the author of Trees of Delhi
Monday, October 22, 2018
Learning bird calls
Getting Started 6: Learning Bird Sounds – Bird Count India
and this
https://birdcount.in/getting-started-5-bird-sounds/
and this
https://birdcount.in/getting-started-5-bird-sounds/
Thursday, October 11, 2018
Pallikaranai plans
Plan takes wings to protect migrant birds in Chennai's Pallikaranai- The New Indian Express
Plan takes wings to protect migrant birds in Chennai's Pallikaranai
The ministry has identified sites in only 14 States and for the rest, the exercise is still underway.
CHENNAI: City’s Pallikaranai marsh is among the 11 wetlands in Tamil Nadu chosen under a five-year National Action Plan for Conservation of Migratory Birds and their Habitats along Central Asia Flyway (2018-2023).
Of the wetlands of ornithological importance identified on the basis of existing monitoring information, 29 sites, including 20 major wetlands and nine wetland clusters, have been identified as significant bottleneck sites for migratory waterbirds in India.
In Tamil Nadu, Point Calimere (Nagapattinam), Great Vedaranyam Swamp (Nagapattinam), Gulf of Mannar Marine National Park and Adam’s Bridge (Ramanathapuram & Thoothukudi districts), Karaivetti Bird Sanctuary (Ariyalur), Pallikaranai (Chennai) are the wetlands prioritised for the conservation of migratory waterbirds. The wetland clusters in Kanniyakumari, including Suchindram, Theroor, Vembanoor and Manakudi Estuary figure in the list, besides salt pans of Puthalam and Kovalam. This is highest for any State in the country.
In neighbouring Puducherry, Ousteri lake, Bahour lake and Kaliveli tank have been identified. The ministry has identified sites in only 14 States and for the rest, the exercise is still underway.
Asad R Rehmani, member of Governing Body of Wetlands International South Asia and a former director of Bombay Natural History Society (BNHS), told Express that Tamil Nadu plays a strategic role in entire Central Asian Flyway, which encompasses overlapping migration routes over 30 countries for different waterbirds linking their northernmost breeding grounds in Russia (Siberia) to southernmost non-breeding (wintering) grounds in west and south Asia, Maldives and the British Indian Ocean territory.
“Tamil Nadu and Sri Lanka are gifted as not much land area is left past them. The birds that come here have no choice but to stay back. So, the wetlands here are crucial and need to be protected,” he said.
Globally, nine migratory flyways have been identified under the Convention on Migratory Species. The Central Asian Flyway is one among the identified flyways. Flyways are areas used by groups of birds during their annual cycle which includes breeding areas, stop-over area and wintering areas.
Globally, nine migratory flyways have been identified under the Convention on Migratory Species. The Central Asian Flyway is one among the identified flyways. Flyways are areas used by groups of birds during their annual cycle which includes breeding areas, stop-over area and wintering areas.
“After due deliberations and stakeholder consultations, the ministry has developed the national action plan along the central Asian Flyway. The plan is structured in six inter-related components i.e. species conservation, habitat conservation and sustainable management, capacity development, communication and outreach, research and knowledge base development and international cooperation,” said R Gopinath, Joint Director (Wildlife), Environment Ministry.
At least 370 species of migratory birds are reported to visit Indian subcontinent, of which 310 predominantly use wetlands as habitats, the rest being landbirds, inhabit dispersed terrestrial areas.
The long-term data sets show that Central Asian Flyway migratory landbirds are declining rapidly. However, the ministry is proposing to formulate and implement Single Species Action Plan (SSAP) for coordinated conservation measures for select important migratory species to a favourable conservation status within India. Twenty such species have been identified as high priority for developing SSAP.
For instance, the number of Spoon-billed Sandpiper, which breed in Russia and fly to India via Myanmar, Bangladesh, Thailand and Vietnam, declined rapidly. The species used to come to migrate all the way to Point Calimere in Tamil Nadu. But last year, only one bird was sighted and it is believed that hardly 1,000 birds are left globally.
Friday, September 28, 2018
The sense of Magnetoreception - the wondrous world of migration
How some animals use the Earth’s magnetic field to navigate - The Economist explains
How some animals use the Earth’s magnetic field to navigate
Magnetoreception helps them locate themselves, which is vital for turtles and songbirds alike
K.W. | NEW YORK
Magnetoreception helps them locate themselves, which is vital for turtles and songbirds alike
COME wintertime thousands of garden warblers, pied flycatchers, and bobolinks—all tiny songbirds—will cross the equator heading south for sunnier climes. It is an epic trip. For guidance they will rely on the position of the sun and stars, as well as smells and other landmarks. They may also use the Earth’s magnetic field, thanks to a sense known as magnetoreception. Theories about it have long attracted quacks. Franz Anton Mesmer, a German doctor working in the late 1700s, argued that living things contain magnetic fluids, which, when out of balance, lead to disease. His idea of “animal magnetism” was debunked and similar ones viewed with scepticism. But magnetoreception has drawn more serious attention in the past half-century. A pioneering study in 1972 demonstrated that European robins respond to magnetic cues. The list of animals with a magnetic sense has since grown to include species in every vertebrate category, as well as certain insects and crustaceans. Some may use it simply to orient, such as blind mole rats. Others—salmon, spiny lobsters, thrush nightingales—may use it for migration and homing, alongside other sensory cues. How do they do it?
Think of the Earth’s magnetic field as shaped by a bar magnet at the centre of the planet. From the southern hemisphere, magnetic field lines curve around the globe and re-enter the planet in the northern hemisphere. A few features of the field vary predictably across the surface of the Earth. Intensity is one variable—the Earth’s magnetic field is weakest at the equator and strongest at the poles. Another is inclination. The angle between the field lines and the Earth changes with latitude, so an animal migrating northwards from the equator encounters steadily steeper inclination angles on its route.
Animals can potentially derive two types of information from the geomagnetic field: the direction in which they are facing, and where they sit relative to a goal. Directional information is the more basic, as polarity lets animals orient north or south as if using a compass. But this has limited utility over long distances. A strong ocean current can sweep turtles off track; winds can do the same for migratory birds. Determining latitude relative to an end point is more useful, and magnetic cues like intensity and inclination may help. Take loggerhead sea turtles (pictured). They swim from the coasts of Florida into the North Atlantic gyre, circling it for years before returning to their natal beaches to breed. Straying from the course can have deadly consequences. One study put hatchlings in test sites that simulated the magnetic fields at three points on the outer edge of the gyre. In all three cases, the turtles reoriented to stay within its confines. Another study, published in April, showed that turtles nesting on far-off beaches with similar magnetic properties (like two on either side of the Florida peninsula, at similar latitudes) had more in common genetically than with those nesting closer by. Turtles, it would seem, can get lost while searching for their natal beach. They may swim to one farther afield but more magnetically familiar and breed there.
Questions still abound. The evidence for a magnetic sense is mostly behavioural; researchers have yet to find receptors for it. Part of the problem is that the cells could be located anywhere inside an animal, since magnetic fields pass freely through tissue. (By contrast, cells that enable the other senses, like sight and smell, make contact with the external environment.) Two theories of magnetoreception dominate. One says animals have an intracellular compass. Another suggests that chemical reactions influenced by the geomagnetic field produce the sense. For researchers, this means more questions than answers.
How some animals use the Earth’s magnetic field to navigate
Magnetoreception helps them locate themselves, which is vital for turtles and songbirds alike
K.W. | NEW YORK
Magnetoreception helps them locate themselves, which is vital for turtles and songbirds alike
COME wintertime thousands of garden warblers, pied flycatchers, and bobolinks—all tiny songbirds—will cross the equator heading south for sunnier climes. It is an epic trip. For guidance they will rely on the position of the sun and stars, as well as smells and other landmarks. They may also use the Earth’s magnetic field, thanks to a sense known as magnetoreception. Theories about it have long attracted quacks. Franz Anton Mesmer, a German doctor working in the late 1700s, argued that living things contain magnetic fluids, which, when out of balance, lead to disease. His idea of “animal magnetism” was debunked and similar ones viewed with scepticism. But magnetoreception has drawn more serious attention in the past half-century. A pioneering study in 1972 demonstrated that European robins respond to magnetic cues. The list of animals with a magnetic sense has since grown to include species in every vertebrate category, as well as certain insects and crustaceans. Some may use it simply to orient, such as blind mole rats. Others—salmon, spiny lobsters, thrush nightingales—may use it for migration and homing, alongside other sensory cues. How do they do it?
Think of the Earth’s magnetic field as shaped by a bar magnet at the centre of the planet. From the southern hemisphere, magnetic field lines curve around the globe and re-enter the planet in the northern hemisphere. A few features of the field vary predictably across the surface of the Earth. Intensity is one variable—the Earth’s magnetic field is weakest at the equator and strongest at the poles. Another is inclination. The angle between the field lines and the Earth changes with latitude, so an animal migrating northwards from the equator encounters steadily steeper inclination angles on its route.
Animals can potentially derive two types of information from the geomagnetic field: the direction in which they are facing, and where they sit relative to a goal. Directional information is the more basic, as polarity lets animals orient north or south as if using a compass. But this has limited utility over long distances. A strong ocean current can sweep turtles off track; winds can do the same for migratory birds. Determining latitude relative to an end point is more useful, and magnetic cues like intensity and inclination may help. Take loggerhead sea turtles (pictured). They swim from the coasts of Florida into the North Atlantic gyre, circling it for years before returning to their natal beaches to breed. Straying from the course can have deadly consequences. One study put hatchlings in test sites that simulated the magnetic fields at three points on the outer edge of the gyre. In all three cases, the turtles reoriented to stay within its confines. Another study, published in April, showed that turtles nesting on far-off beaches with similar magnetic properties (like two on either side of the Florida peninsula, at similar latitudes) had more in common genetically than with those nesting closer by. Turtles, it would seem, can get lost while searching for their natal beach. They may swim to one farther afield but more magnetically familiar and breed there.
Questions still abound. The evidence for a magnetic sense is mostly behavioural; researchers have yet to find receptors for it. Part of the problem is that the cells could be located anywhere inside an animal, since magnetic fields pass freely through tissue. (By contrast, cells that enable the other senses, like sight and smell, make contact with the external environment.) Two theories of magnetoreception dominate. One says animals have an intracellular compass. Another suggests that chemical reactions influenced by the geomagnetic field produce the sense. For researchers, this means more questions than answers.
Monday, September 10, 2018
Inside Nanmangalam Reserve Forest, Chennai’s lesser-known natural gems
Inside Nanmangalam Reserve Forest, Chennai’s lesser-known natural gem
September 8, 2018 Seetha Gopalakrishnan
Around 40 different species of butterflies have been recorded within the limits of the Reserve Forest. The presence of abundant flowering trees laden with nectar support the population.
Chennai is home to not just one, but two reserve forests – the Pallikaranai wetland and the Nanmangalam scrub forest. Located along the Tambaram-Velachery Main Road, the Nanmangalam Reserve Forest is among the last remaining havens of the ‘Vandalur scrub’, the original natural forest of this landscape.
While it might be difficult to tie the seemingly disparate scrub and forest together, the Tropical Dry Evergreen Forests (as they are also known) with their short, small leaved trees and thorny shrubs indigenous to South-East India are best equipped to survive the local climatic conditions.
The scrub and its diversity
Spanning around 320 hectares, the patchy vegetation of the Nanmangalam Reserve Forest thrives across hillocks and plains. While the plain landscape is dominated by thorny shrubs, thickets and grasslands, the thicker and woodier vegetation is found mostly in the hillocks bordering the reserve.
A study conducted by city-based biodiversity conservation organisation Care Earth Trust revealed the presence of 442 different species of flowering plants inside the Nanmangalam Reserve Forest alone. “The species diversity in Nanmangalam is phenomenal; it is the highest compared to any other patch of forest within city limits. The forest is home to some rare species of plants which are not seen anywhere in the vicinity,” says plant ecologist Muthu Karthick from Care Earth Trust.
The forest is home to 100-125 species of birds in addition to 40 different species of butterflies and close to 20 species of damselflies and dragonflies. Forest birds being very shy tend to nest far away from human habitations. As a logical extension, many of the birds spotted here in Nanmangalam are rarely to be seen elsewhere in the city, making this space a bird-watchers’ delight.
The Reserve Forest’s most famous inhabitant and star attraction is the great horned owl. “A ravine which was once a quarry used in the past for cleaning heavy vehicles now provides protection for these nocturnal predators,” remarks J Subramanean from Care Earth Trust.
As a general rule, the landscape is typified by small to medium sized birds characteristic of drylands. “Insectivorous birds such as bee-eaters and babblers are common-sight here. Smaller nectivores such as the sunbirds and fruit-eaters including mynas and bulbuls frequent the scrublands,” adds Wildlife Biologist Vinoth Balasubramanian from Care Earth Trust. In addition, many waterbirds, local migrants from the wetlands in the vicinity, continue to move in and out of the reserve on a regular basis.
Reclaiming lost lands
In the early 1960s, extensive portions of these scrublands were opened up for mining which massively affected the region’s diversity and ecological balance. The Tamil Nadu Forest Department took control of the area in 1974; mining has been banned since.
Abandoned quarries now serve as receptacles of rainwater, frequented by wild animals and cattle. The severe water crunch of 2017 saw the Chennai Metro Water Supply and Sewerage Board (CMWSSB) identify the quarries in Nanmangalam as potential sources for augmenting the city’s water supply. The plan, however, failed to take off.
Interestingly, Nanmangalam is one among the 23 megalithic sites within the Chennai metropolitan area. Stone-age burial sites, called cairns, dating back to the Neolithic times are found within the limits of the reserve forest.
Attempts to restore and rejuvenate the landscape are being taken up in earnest by the forest department. Decentralised water conservation projects and afforestation initiatives have been designed with an intention to minimise the impact of quarrying on biodiversity and the overall quality of the forests.
Here are some snapshots from the green haven:
Spread across plains and hillocks, the Nanmangalam Reserve Forest is home to a diverse community of plants and animals.
Patches of forest land we see across the city such as the ones within the premises of the Theosophical Society and Guindy National Park as well as the chunk in Nanmangalam and Vandalur hills were once contiguous forests. Thanks to urbanisation, they now remain terribly fragmented.
Spread over 320 hectares, the Nanmangalam Reserve Forest is among the last few remaining tracts of the Vandalur scrub. In addition to the natural vegetation, the forest department has taken up afforestation projects where species of Terminalia, Bauhinia and Syzygium have been planted to augment tree cover.
Trees are characteristically short with thick, small leaves–an adaptation which enables them to survive better in the dry environment. Seen here is a species of Diospyros exhibiting all characteristics features of trees native to the landscape.
As it is with the flora, the birds and mammals seen here are small to medium sized, characteristic of drylands. The scaly-breasted munia along with sunbirds and swallows are seen throughout the year.
The white headed babblers, native to subtropical and tropical dry shrublands can be commonly sighted here. These birds are usually seen moving about in groups of seven, fetching them the common name ‘ Seven sisters’.
The attractive inflorescence of Memecylon, an evergreen shrub native to India abounds with nectar, serving as a very important stop for foraging bees and insects in the forest. Commonly found in the Deccan Plateau, its leaves and roots are known to have medicinal properties.
Succulents are common-sight in the area. Euphorbia of the Ancients or the antique spurge (seen here) along with prickly pear cactii and leaf-less Sarcostemma are among the many drought-tolerant plants seen in the Nanmangalam Reserve Forest.
In the early 1960s, large tracts of land in the city’s outskirts were leased out for quarrying rocks by the government. Ever since the Forest Department took over the area in the 1980s, quarrying has been banned. Depressions left behind as a result of quarrying serve as receptacles of rainwater during the monsoons.
Projects taken up under the Tamil Nadu Afforestation programme have ensured the increase of the diversity and density of plants within the reserve forest. Eucalyptus along with Acacia species have been raised by the Forest Department for rejuvenating the landscape.
Natural slopes and depressions have been identified by the Forest Department for harvesting rainwater. In addition to minimising soil erosion, these ponds also serve as watering holes for small mammals and birds in the forest.
A bird-watchers’ delight, the Nanmangalam Reserve Forest is among the lesser known natural gems of city. Many bird species that are no longer seen within the city can be spotted here in good numbers.
Access to the forest is restricted; permission from the District Forest Officer is a must for entering the property.
Chennaites have to thank their stars for being blessed with two reserved forests and a National Park within city limits. Along with the Guindy National Park and the Pallikaranai marsh, the Reserve Forest in Nanmangalam plays a very important role in enhancing the city’s livability and improving its green quotient.
[All photos have been shared with permission from Care Earth Trust, a Chennai-based biodiversity conservation organisation involved in studying the rich biodiversity of the Nanmangalam Reserve Forest.]
September 8, 2018 Seetha Gopalakrishnan
Around 40 different species of butterflies have been recorded within the limits of the Reserve Forest. The presence of abundant flowering trees laden with nectar support the population.
Chennai is home to not just one, but two reserve forests – the Pallikaranai wetland and the Nanmangalam scrub forest. Located along the Tambaram-Velachery Main Road, the Nanmangalam Reserve Forest is among the last remaining havens of the ‘Vandalur scrub’, the original natural forest of this landscape.
While it might be difficult to tie the seemingly disparate scrub and forest together, the Tropical Dry Evergreen Forests (as they are also known) with their short, small leaved trees and thorny shrubs indigenous to South-East India are best equipped to survive the local climatic conditions.
The scrub and its diversity
Spanning around 320 hectares, the patchy vegetation of the Nanmangalam Reserve Forest thrives across hillocks and plains. While the plain landscape is dominated by thorny shrubs, thickets and grasslands, the thicker and woodier vegetation is found mostly in the hillocks bordering the reserve.
A study conducted by city-based biodiversity conservation organisation Care Earth Trust revealed the presence of 442 different species of flowering plants inside the Nanmangalam Reserve Forest alone. “The species diversity in Nanmangalam is phenomenal; it is the highest compared to any other patch of forest within city limits. The forest is home to some rare species of plants which are not seen anywhere in the vicinity,” says plant ecologist Muthu Karthick from Care Earth Trust.
The forest is home to 100-125 species of birds in addition to 40 different species of butterflies and close to 20 species of damselflies and dragonflies. Forest birds being very shy tend to nest far away from human habitations. As a logical extension, many of the birds spotted here in Nanmangalam are rarely to be seen elsewhere in the city, making this space a bird-watchers’ delight.
The Reserve Forest’s most famous inhabitant and star attraction is the great horned owl. “A ravine which was once a quarry used in the past for cleaning heavy vehicles now provides protection for these nocturnal predators,” remarks J Subramanean from Care Earth Trust.
As a general rule, the landscape is typified by small to medium sized birds characteristic of drylands. “Insectivorous birds such as bee-eaters and babblers are common-sight here. Smaller nectivores such as the sunbirds and fruit-eaters including mynas and bulbuls frequent the scrublands,” adds Wildlife Biologist Vinoth Balasubramanian from Care Earth Trust. In addition, many waterbirds, local migrants from the wetlands in the vicinity, continue to move in and out of the reserve on a regular basis.
Reclaiming lost lands
In the early 1960s, extensive portions of these scrublands were opened up for mining which massively affected the region’s diversity and ecological balance. The Tamil Nadu Forest Department took control of the area in 1974; mining has been banned since.
Abandoned quarries now serve as receptacles of rainwater, frequented by wild animals and cattle. The severe water crunch of 2017 saw the Chennai Metro Water Supply and Sewerage Board (CMWSSB) identify the quarries in Nanmangalam as potential sources for augmenting the city’s water supply. The plan, however, failed to take off.
Interestingly, Nanmangalam is one among the 23 megalithic sites within the Chennai metropolitan area. Stone-age burial sites, called cairns, dating back to the Neolithic times are found within the limits of the reserve forest.
Attempts to restore and rejuvenate the landscape are being taken up in earnest by the forest department. Decentralised water conservation projects and afforestation initiatives have been designed with an intention to minimise the impact of quarrying on biodiversity and the overall quality of the forests.
Here are some snapshots from the green haven:
Spread across plains and hillocks, the Nanmangalam Reserve Forest is home to a diverse community of plants and animals.
Patches of forest land we see across the city such as the ones within the premises of the Theosophical Society and Guindy National Park as well as the chunk in Nanmangalam and Vandalur hills were once contiguous forests. Thanks to urbanisation, they now remain terribly fragmented.
Spread over 320 hectares, the Nanmangalam Reserve Forest is among the last few remaining tracts of the Vandalur scrub. In addition to the natural vegetation, the forest department has taken up afforestation projects where species of Terminalia, Bauhinia and Syzygium have been planted to augment tree cover.
Trees are characteristically short with thick, small leaves–an adaptation which enables them to survive better in the dry environment. Seen here is a species of Diospyros exhibiting all characteristics features of trees native to the landscape.
As it is with the flora, the birds and mammals seen here are small to medium sized, characteristic of drylands. The scaly-breasted munia along with sunbirds and swallows are seen throughout the year.
The white headed babblers, native to subtropical and tropical dry shrublands can be commonly sighted here. These birds are usually seen moving about in groups of seven, fetching them the common name ‘ Seven sisters’.
The attractive inflorescence of Memecylon, an evergreen shrub native to India abounds with nectar, serving as a very important stop for foraging bees and insects in the forest. Commonly found in the Deccan Plateau, its leaves and roots are known to have medicinal properties.
Succulents are common-sight in the area. Euphorbia of the Ancients or the antique spurge (seen here) along with prickly pear cactii and leaf-less Sarcostemma are among the many drought-tolerant plants seen in the Nanmangalam Reserve Forest.
In the early 1960s, large tracts of land in the city’s outskirts were leased out for quarrying rocks by the government. Ever since the Forest Department took over the area in the 1980s, quarrying has been banned. Depressions left behind as a result of quarrying serve as receptacles of rainwater during the monsoons.
Projects taken up under the Tamil Nadu Afforestation programme have ensured the increase of the diversity and density of plants within the reserve forest. Eucalyptus along with Acacia species have been raised by the Forest Department for rejuvenating the landscape.
Natural slopes and depressions have been identified by the Forest Department for harvesting rainwater. In addition to minimising soil erosion, these ponds also serve as watering holes for small mammals and birds in the forest.
A bird-watchers’ delight, the Nanmangalam Reserve Forest is among the lesser known natural gems of city. Many bird species that are no longer seen within the city can be spotted here in good numbers.
Access to the forest is restricted; permission from the District Forest Officer is a must for entering the property.
Chennaites have to thank their stars for being blessed with two reserved forests and a National Park within city limits. Along with the Guindy National Park and the Pallikaranai marsh, the Reserve Forest in Nanmangalam plays a very important role in enhancing the city’s livability and improving its green quotient.
[All photos have been shared with permission from Care Earth Trust, a Chennai-based biodiversity conservation organisation involved in studying the rich biodiversity of the Nanmangalam Reserve Forest.]
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