GNP and scrub forests

A lovely little piece, about the jewel of a National Park in our midst.  I love the details about the scrub forests and their importance.

Enter the jungle: Where in this busy city would you find 150 species of birds? – Citizen Matters, Chennai

April 12, 2019 Seetha Gopalakrishnan

With a mix of cackles, screeches and chuckles, the spotted owlet with its harsh call is seen and heard often at the Guindy National Park

Historically, South Chennai has been a massive floodplain, comprised predominantly of the Pallikaranai marsh and its satellite wetlands with intermittent patches of scrub forests. Remnants of these forests are seen in protected campuses of the Theosophical society, the Indian Institute of Technology, Guindy National Park and the Nanmangalam Reserve Forest to the south of the city. Spread over 2.7 square kilometre, the Guindy National Park (GNP), a slice of coastal thorny scrub is a haven of quiet, amidst the bustling metropolis that envelopes it on all sides.

Chennai’s forests

The Chennai Forest Circle, which comprises the districts of Chennai, Chengalpattu and Tiruvallur is blessed with three out of the nine major forest types of the State–tropical dry deciduous, tropical dry thorn scrub and tropical dry evergreen.

Before this forest patch in Guindy was declared as a National Park in 1978, it was part of the elaborate Guindy Lodge, the official country residence of the erstwhile Governor of Madras and now the official residence of the Governor of the state of Tamil Nadu, the Raj Bhavan. GNP was originally a mix of tropical scrub and Palmyra dominated thorn woodlands. Over the years it was enriched with native and exotic trees to create the present vegetation structure that resembles a natural forest.

The region’s isolated scrub forests are characterised by the presence of relatively short trees interspersed with grasslands. Scrubs and thickets are most often surrounded by larger trees making the area appear densely vegetated. An abundance of fruit bearing trees and shrubs makes GNP a thriving bird habitat as well.



The Blackbuck (Antilope cervicapra) and the Chital or Spotted Deer (Axis axis) are the predominant faunal elements at the GNP with the latter being introduced into the Park while the Raj Bhavan was being developed; they have now been found to feed and breed in the contiguous IIT-Madras campus as well.

Over the years, close to a hundred and fifty species of birds have been sighted at the GNP which include different species of bee-eaters, bulbuls and sunbirds.

The GNP is not just a critical green lung, but also an excellent space to showcase urban forest conservation. The Park has consistently interested scientists and naturalists for existing as an island of tranquility in the midst of urban congestion and concrete chaos. The Forest Department had developed walking trails within the Park, most of which were destroyed by Cyclone Vardah. One such trail remains, now mostly used by school children to take a tour around the Park.

Since only school students in small batches are currently allowed to enter the GNP, here is a virtual tour for you through our photos:

The eighth smallest National Park in the country, the Guindy National Park is a mosaic of woodland, shrubs and grasslands. Over 350 species of plants and 150 species of birds have been recorded here over the years. Twelve species of mammals including the near-threatened Blackbuck and the Golden Jackal call the National Park their home

The Blackbuck is currently the sole representative of the genus Antilope and together with the Chital is the umbrella species of the Guindy National Park. The Golden Jackal is currently the Park’s primary predator

The GNP landscape is typified by tropical scrub vegetation. Acacia planifrons know as the kodai velan in Tamil (kodai meaning umbrella, indicative of its umbrella-shaped canopy) traditionally used as firewood is found in abundance

The sweet-scent of the Ixora brachiata blossoms (Sulundhu in Tamil; Torchwood tree in English) fill the air with the tree in full bloom between the months of March and April in deciduous slopes across the subcontinent



Palmyrah, Borassus flabellifer, the state tree of Tamil Nadu is also the nominate species of the coastal areas. The Palmyrah-dominated scrubland habitat is extremely crucial for the survival of the Blackbuck and other native species of plants and animals

About seven species of indigenous Ficus (collectively known as fig trees to which the Banyan belongs) are found in the campus. These trees serve as the keystone species in the ecosystem on which many other species, mostly avifauna greatly depend on

The white breasted kingfisher is commonly seen in the Park, feeding mostly on insects, frogs and sometimes on fish. The bird is brilliantly coloured with a bright blue back, brown lower belly and stunning red beaks.

A variety of spiders are found in the Park of which the signature spider is of particular interest. These spiders build decorated webs with strokes which look like signatures, and hence the name

Brilliant red velvet spiders are also commonly seen at the GNP during the rainy season. Apart from the macro-fauna, there is a wide variety of invertebrates–termites, worms, crabs, bugs and butterflies. These creatures help in preserving the ecosystem in their own small ways from tilling the soil to pollination and decomposition

With an amazing plant wealth, the Guindy National Park acts as an excellent green lung and an admirable refugium for local biodiversity

Prior permission needs to be obtained from the Wildlife Warden, Chennai to enter the National Park. Currently, only school students in small batches are being allowed to enter the GNP

References: Developing a water management strategy and action plan in the Guindy National Park; TNFD, 2014;

All pictures clicked by Seetha Gopalakrishnan and Vinoth Balasubramanian for Care Earth Trust.

A wood spider at Dandeli

Find the giant wood spider in the enormous web that spanned a couple of trees.

Clue:  It is in the middle of the picture with a backdrop of a teak tree trunk.

And it is the female.  The males are tiny and inconspicuous.

You can also find a picture of it at Thattekad and Rishi Valley.  

Deepavali at Rishi Valley once more

We were there in 2010, and we went back in 2012.

A Praying Mantis stoppped by to say hello...

...and enquire if there was room in the guest house for it....

The caretaker Gopal's wife gently told him his place was in the garden!

A wolf spider pops out to check on us

He chirped away, unmindful of us

And the three sisters were bathed in a lovely light

The baya weavers were obviously very industrious this season

..And what was this?

Christmas came early

The sun filtered through the wild grass, I heard a spotted dove in the distance, while the parakeets screeched noisily overhead

I miss the maramalli in my neighbour's front yard, here in Madras.  This one stood tall and proud.

And Cassias everywhere.

Stinging and biting hazards!

When Rom first visited Agumbe in the early 1970s he had some peculiar hippie ideas. He felt that all the trappings of the human world interfered with his ability to find king cobras. So, he discarded his watch and shoes, and stripped down to his loin cloth. Not the best attire for his first brush with the Devil Nettle!

He got it on his arms, chest, stomach and legs. “It was itchy painful,” he recalls. Hives erupted, and to alleviate the pain he dove into a pool. It became doubly horrendous and he jumped out again. That night he shivered uncontrollably. By the next morning, the hives had become depressions and the affected area was constantly clammy. For the following six months, any contact with water was enough to set off the ‘itchy pain' again.

Read more about the Devil Nettle in this delightful essay by Janaki Lenin. It is found in the Western Ghats. The Hindu : FEATURES / METRO PLUS : Innocent plant, deadly sting

I am glad we did not come across these in our walks in the karian shola at Parambikulam. The plant picture in The Hindu essay looks most innocuous!

While we did not get stung by nettle, a few of the group members had ticks on them, while others (including me) had chigger bites! Forewarned about leeches, we were resplendent in our leech socks, much to the amusement of our guides, who mentioned mildly several times, that there were no leeches at the moment since they had had a spell of dry weather.

On our return to Madras, I was absent-mindedly scratching my ankles, and looked down to see some red, mosquito-like itch marks. Sheila also said she had some and then husband and son also had these marks. However, we did not see any insect biting us, though we peered closely and examined our limbs thoroughly - I only found more unwanted warts and moles that I never knew I had!

Sheila's sister then mentioned to her that they may be "chigger bites", so off we went to figure out what this was (Google zindabad!) and discovered that chiggers were the larvae of a type of mite, and they were almost microscopic! To our relief (I had heard some worrying stories about tick bites and mysterious fevers), these were not ticks, and besides the itching, we could ignore it.

That is what we did - tried not to scratch, kept the skin clean, and now two weeks later, those little welts have dried, and the itching is gone.

Mites are arachnids, like ticks, but are much, much smaller, almost microscopic. Ticks are larger - I remember the ones that use to plague our dogs. If I'm not mistaken, ticks feed on blood of the host, while mites feed on lymph tissue, if they are parasitic. Ticks are also more troublesome in that they carry diseases, and so one has to keep a close eye out for them. Mites, it appears, lead to allergies, but many, (like the ones we were bitten by), can be ignored in that the discomfort is temporary and without any other implications.

Here are some other arachnids we saw in the Parambikulam area.

Argiope anasuja. Photo by Junior, with his 35mm Nikon camera and manual focus

The same argiope, taken by me with the Panasonic Lumix on autofocus. I struggled to get it into focus, as the camera "autofocussed on everything else besides this spider! Reminded me of Dr TPA and the Photography workshop I attended.

I first wrote about this argiope, when I saw it at the PWD park in 2009!

I think this is the Opadometa fastigata, with silver patches across the body

Gasteracantha geminata. A common spider of Kerala

And then we saw this "exoskeleton". Actually Pranav did, and showed it to all of us. So, the spider does not have an internal skeleton but one like an external shield. And when it grows, it bursts out of the old one and grows a new one!

I've often wondered why we find spiders on their backs, with their legs curled up. Check out this link for the reason.

Deepavali at Rishi Valley - Eight legs & six legs

I always thought the spider was an insect. (Really, what did they teach her in school, you say?) Well, what did you think, huh...huh..go on tell me.

Its quite simple really, spiders have eight legs, insects have six. So spider not insect, ta-da!

So the spider is an arachnid. And guess what, so are scorpions and ticks, arachnids I mean.

And if you are wondering how this great insight dawned on me, it was because of our recent trip to Rishi Valley, some pictures I took of this gigantic "yettu kaal puchi", and then coming back and finding no mention of it in the book called Satpada, Our World of Insects!! I mean, its there in the title staring and screaming at me - SIX LEGS - and I still dont get it. (I can imagine Pranav, the wonder-insect-kid of MNS shaking his head in despair.)

Arachnid aesthetics first

These huge webs are those of the Giant wood spider, and I saw them for the first time in the Rishi Valley campus, and immediately the next day, up on Horsley Hills.

Oh yes look closely, there's the spider to the left and all those white lines...that's how big the web was!

The spider herself. The male is really tiny. Oh, to be a female spider!!

Trying my best to get the spider and the web together

Attempts at art photography. This web survived a really heavy downpour. You can see the water droplets glistening on the web

And this below is what we saw all over the grass, little dew patches I thought, but no, its a spider's web that has caught the morning dew. Check out the tunnel in the middle. its made by an arachnid called a tunnel spider, commonly, a type of wolf spider. I never did see this spider, but I believe its sitting there waiting in that tunnel/funnel, and will emerge as soon as its web vibrates!

If you click on the picture, you will see the funnel in the middle of the sheet-like web.

Insecta next

Lepidoptera - butterflies & moths

I saw -

Tawny costers

Blue Mormon - I wish could have photographed it

Common Mormon

Grass yellows

Plain tiger

White orange tip

And a Common Cerulean

Common Bush Brown

Hymenoptera - bees

The hard working honey bees, were hard at work making honey. I try to reduce the amount of honey I eat or buy these days, (its not making any difference to my waistline), they have a tough enough life it seems, without us eating up all their honey.

Apis dorsata at work

Heteroptera - bugs

Bugs feed on liquid mainly - so they suck, not chew, are quite a nuisance, and also smell foul!

We saw jewel bugs, water skaters, water scorpions and giant water bugs too. The water scorpions and giant water bugs we saw in the stagnant pools of water just off the RV campus, up in the rocks. The water scorpion is quite tiny, maybe an inch long, and I would have missed it, if Thyagu and Murugavel had not lifted it up on a stick and pointed it out. The "tail-like" appendage is actually a breathing tube, I discovered from the Satpada book!

Jewel bug - a shield-back bug, so attractive to look at, but pretty destructive to the plant, sucking out their sap.

Water skaters we saw in plenty at Madhinaiyanicheruvu, the freshwater body, about 20kms from RV.

Odonata - dragon and damselflies

There were so many, but they rarely sat still for me to take a good look, let alone photograph them. Dragonflies are my latest wonder-of-the-natural-world type creature. The glider is the insect with the longest migration....from India to Africa and back, if you please! 14,0000 kms in all.

A Ground Skimmer. Skimmers are found close to the ground and rarely fly more than 1m up. I saw several of these just hovering over the ground.

A Ditch jewel. Seen mainly near sewage ponds, so was this one lost?!

Orthoptera - grasshopper

Just click on the picture below, to appreciate all the colours and markings of the innocuous grasshopper. Take a look at those long legs, ready to put in a loooong jump!

Quite the agricultural pest these insects.

Cataloipus cymbifera is what I thought. But Pranav believes that "it is one of the Migratory Bird Locusts- most probably Schistocerca gregaria, a species that is very well known for its infamous gregariousness (as the name suggests). This is a grasshopper that trims foliage a little too enthusiastically, in the company of hundreds of individuals of its kind".

I made the mistake of asking him why he thought so and he gave me details about the size of the head, and markings on the pronotum, which all was too much for my middle-aged brain to process!! So, i shall just take his word for it. Thanks Pranav!

Coleoptera - beetles

Here's one longhorn beetle that Murugavel found, and placed lovingly on the tree to be photographed.

Longhorn beetle, with their extra long antennae

Hymenoptera - wasps

This looks like a mud dauber wasp of some sort...but all the references I came across show them with yellow legs....so what is this?

It was busy burrowing in the sand just outside the guest house, as the rain started. These wasps paralyse or tranquilise their victims, and then carry them off to their nest, where they are stored for their young ones!

Wasp

I also saw stick insects and mantises, paper wasps and I think even a hornets nest....but I do not have photographs of these.

All in all, a significant improvement in my knowledge of the insect world, in three days, dont you think?

An industrious spider works overnight

Overnight, over the parapet wall of my balcony, a spider was at work.
From building this large web, it obviously did not shirk.

The morning sun glinted off the web, so magical
Its silken threads making me wax so lyrical.
I wondered about the spinneret glands under its belly
That helped make this work of art, that should be on telly.

Different glands, different types of silk made,

From one, a safety line is trailed,

another, sticky silk to trap its prey

a third, stronger silk, for wrapping it may.

So much energy does the spider expend

all to feed itself, in the end.

All the work and it lasted not a day

The rain came that evening and washed it all away.

Whatever became of it, I sit and wonder

As I listen to the intermittent thunder.

Another day, another web

So does life flow and ebb.

Spider!!!

I wonder if this is a Huntsman Spider. Those large, hairy spiders that are relatively harmless, but can give you quite a fright when they come scurrying out of a corner.

This one was in my parents' home, in the garden cupboard.

Spiders !!! - a set on Flickr - for different spidey types.