Monday, September 10, 2012

Quid pro quo

It is a bustling, vivacious world out there, is a thought I cannot evade every single time I am out in the wild. One could walk ten steps and observe a hundred different things happening at the same time. At sundown, a huge flock of Bee-eaters chirping, or a lone Pitta calling out mean the same thing - they are prepping to roost and retire for the day. But, that Nightjar clucking aloud at the same moment has just begun its day. A skittish Bulbul perching on a shrub could be very random behavior, but a Mormon picking a particular shrub to settle down on could mean something else. A bunch of Ants going up and down a blade of grass are definitely there for a reason and so is that Calotes hanging around an Ant's nest. For every unrelated event, there are a dozen related behaviors and for every behavior we think we understand, there are a dozen that we don't see or comprehend.

Relationships in the wild are mostly either obligate (where both species completely depend upon each other) or facultative (where they can, but they don't have to live together).

I once came across dozens of little insects, each the size of a mustard, clumped together under a leaf. They had some pretty red ants for company. I was later told that they are sap sucking insects called Aphids or Plant Lice. They are probably one of the most destructive insect pest species. The red ants belonged to the genus Camponotus and are commonly called Carpenter Ants. Aphids pierce leaves and feed on sap. Excess sap concentrates as honeydew, which attracts ants. In a display of Mutualism, the ants provide aphids protection from predators.The next time you see plant lice on a leaf in your garden, look around before you toss the leaf out. You might see the entire life cycle of a species on that very leaf!


Ants and Aphids


Mutualism is a co-operative interaction between two organisms of different species where they biologically interact and derive some positive benefit out of the interaction. However, this is not an obligatory relationship. Both species can function normally without this relationship. 

Watching ants and aphids peacefully co-exist together built enough curiosity in me to observe ants more. And that is how I was introduced to Mealybugs and Treehoppers. Mealybugs are scale insects, considered as pests since they feed on plant juices and can induce leaf drop when they occur in large numbers. They become very serious pests in the presence of some ants, as these ants protect them from predators - again, a display of mutualism.

Ant tending to a Mealybug


Ants and a Mealybug

Treehoppers belong to the family Membracidae, a group of insects related to Cicadas and the Leafhoppers. Some treehoppers have also developed mutualistic relationships with Wasps.


Ant tending to a Treehopper

Unlike mutualism, Parasitic relationships are non-mutual, where one organism benefits at the expense of the other. Mistletoe, strangler figs, leeches, fleas fall into this category.
Insects like fleas are external parasites, they are wingless and have mouthparts adapted for piercing skin of mammals and birds to suck blood. Leeches are also blood suckers, they feed on blood from vertebrate and invertebrate animals. 

Some members of the Mistletoe family are partial parasites. When birds like Flowerpeckers feed on the fruit of this plant, a sticky substance present in the fruits ensures that the seeds get stuck to their body. To get rid of these seeds, the birds rub their body against a tree, thus enabling seed dispersion - the roots penetrate the branch of the tree and the plant is born. The plant has green leaves and can photosynthesize, but absorbs nutrients from the host tree instead. Although the Mistletoe is a partial parasite, it is beneficial to the ecosystem, with a wide variety of species depending on the fruits. The plant is also a larval host for the very pretty butterfly, Common Jezebel.


Mistletoe Flowers

I find Strangler Figs fascinating, I think they add charm to a forest. Mostly found in dense, tropical forests, these plants begin life as epiphytes. Birds and other arboreal animals act as seed dispersers for these Ficus plants and they grow on top of other trees, by germinating in crevices on branches. The seedlings then begin their journey downwards, looking for necessary nutrients and simultaneously grow upwards into the sky, in the quest for sunlight. In the process, the original host tree is enveloped and often dies. As they grow, the fractals these roots and branches assume look eerily beautiful. I have seen the most spectacular specimen of Strangler Figs in Bhadra Tiger Reserve and Jim Corbett National Park.  



Strangler Fig from Bhadra

A Symbiotic relationship, on the other hand, takes place between two species where they completely depend on each other for survival.
Symbiotic relationships can be broadly classified into Ectosymbiosis - where one organism lives on another (mistletoe, lice, cleaner fish) and Endosymbiosis - where one partner lives inside the other (zooxanthelles in corals, lactobacilli in humans)

Lichen, for example, is a composite organism which is formed as a result of a symbiotic relationship between fungi (mycobiont) and a photosynthetic partner, usually green algae (phycobiont). Algae can photosynthesize by virtue of being a plant. Carbohydrates are produced during photosynthesis, which in turn serve as food for the fungi. 



Lichen

Lichens (rock flower) are some of the oldest living organisms on Earth and can survive in varied climates and altitudes. They grow on any undisturbed surface that receives ample light - leaves, branches, bare rocks, walls and exposed soil surfaces. Many lichens are vulnerable to environmental disturbances and their growth is inhibited in such cases. So, they can be observed to assess air pollution. They are used to prepare dyes, masalas and some medicines too.

Cattle Egrets following a herd of grazing cattle is a common sight in most suburban parks and villages. In forests, we see these Egrets around herds of Elephants, Deer and Gaur. They spend time around these large mammals feeding on insects and other small prey that are disturbed while they graze.
This type of a relationship is called Commensalism. The word originates from the term 'Commensal' which means 'sharing of food'. Here, one organism benefits but the other doesn't - and it is caused no harm either. 

Cattle Egrets with a herd of Elephants

All bonds in the ecosystem are delicate and sensitive, they hang by a thin silken thread. The loss of one species in a relationship can spell disaster for the other species too. They give and take, but just the right amount, to maintain and enrich that critical equilibrium. While we know of and understand some of these connections and inter-dependencies between species around us, there are many that aren't even visible to the naked eye, that are still being studied. Many of these relationships have heavily influenced evolution.

We humans are social in nature and live in a sea of relationships - we are born into many, we build several, we are forced into some, we love being in a few that we care about and hate being in those we become hostages of. We are capable of developing close bonds with anything or anyone we spend a considerable amount of time with. We are constantly wriggling in and out of relationships, pretty much like all other forms of life we share this planet with. However, there is a difference. Humans can never achieve the kind of complexity in relationships that non-human forms of life can.


P.S Thank you, Karthik for helping me put mind and matter in a reasonable order :)

Wednesday, November 2, 2011

Unsung and Unheard

Some decisions are tough. More so when it involves walking through a dense jungle in the dark night, just to check on the sound of tree felling. One could step on a snake, slip on a rock or fall into a pit, and this is elephant – tiger country. Narrating how they walked a couple of kilometers in the middle of the night, Forest Officer Prabhuswamy recalled how they couldn’t even turn on the torch, for they could end up alerting timber smugglers about their presence. He, along with a couple of other watchers - Jayendra and Soma - recently caught a few timber smugglers. These courageous men don’t have a choice to make these decisions. It is their job, their call of duty and come what may, they will protect their home – the jungle.


40 year old Jayendra, a native of Coorg, joined the forest department as a MR (muster roll) Watcher in 1987. He continues to be an MR Watcher in 2011, with no hope of ever being promoted as a permanent watcher. Every morning, armed with a rifle and a wireless phone, he sets off with two other guards to patrol the forest and visit all the sensitive areas – forest state borders, caves and waterholes. He can get two days off once in ten days and he uses this time to visit his family in Bandipur town. His children attend school there and like all other guards, he is worried that with lack of guidance, his children too will drop out of school by the time they reach the 8th grade. 


46 year old Soma, on the other hand, is a PCP (Petty Cash Payment) watcher and joined the department 11 years ago. His young daughter was married off to the first suitable match last year, Soma says wanted to reduce his burden. He is on the same lines as a daily wage worker and is aware that he will never be added to the muster roll, he belongs to the pool of lakhs of such PCP workers across different government departments and their fate hangs on a pending bill in the parliament.  


Across 11 ranges and 38 anti poaching camps in Bandipur, there are around 250 PCP watchers and 57 MR watchers. All of them share the same plight as Jayendra and Soma, and some, worse. Their work is anything but hard, it is somewhere much beyond that - walking for an average of 15-17 kilometers each day, battling forest fires, helping villagers chase away elephants that enter fields in the fringe areas, taking on poachers and timber smugglers, to mention a few. Job insecurity, tough working conditions and the fact that they live deep in the jungle, isolated from the world and far away from their families doesn’t help the situation. These problems are magnified in the summer when the heat reaches its peak and the forest runs dry; and in the monsoon when incessant rains take over the landscape. Unappreciated, insecure and demotivated, they truly are THE unsung heroes. 


The APC (Anti-poaching Camp) we visited is one of the better ones, there is a concrete structure with a proper roof, a separate chamber to store supplies and a trench around the cottage to keep the elephants at bay. It has an approachable road and the forest department jeeps can access the APC with ease. A tiny bulb hangs there, powered by a solar panel on the roof. However, things 
that we take for granted, like water supply and toilets are still a luxury. The hand pump of a bore well installed there was damaged by an elephant, so water has to be supplied in forest department jeeps, 45 liters once in three days.  But, there are many APCs in interior parts of the jungle that are not easily accessible, especially in the monsoon. In such places, forest guards still live under leaking roofs, without electricity. 



Mr Hanumanthappa, the DCF of the Bandipur range says that the living conditions of forest guards have largely improved since Project Tiger came to Bandipur - funding improved, uniforms and shoes were distributed, salaries became regular and food supplies increased. They are now given nutritious food and food provision has been increased from Rs 20 to Rs 40 per day. They now have enough rations for two meals a day and have been provided bags and water bottles to help them carry food when they go out for their daily patrols. The DCF pointed out that the guards need binoculars, jackets and umbrellas. The fire fighting staff require shoes, knives, torches and some masks to protect their faces from the fire and smoke. He has been trying to procure these items for his staff.

The forest department maintains a list with data of unemployed youth from local villages and contacts them when they need to increase their workforce. Some children of forest guards have also joined the forest department in similar roles. But, given the working conditions of these guards, their children have no motivation to take up jobs within the forest department, which has resulted in a huge shortage of staff. Outsiders will not last in this jungle, he says.




Yes, this also means that guards in any forest range which is not a Tiger Reserve don’t receive salaries for months. They live in very bad accommodation and patrol the jungles in rubber slippers, armed with a stick. Most of these guards are tribesman or locals from the fringes of the forest, with excellent knowledge of the jungle. They can track and guess human/animal movements in the jungle through a broken branch or footprints, information that can be very valuable to a poacher. There is always a threat of loss of loyalty. Vital information could leak out either innocently or for monetary gain. Some sort of commitment or attachment to a forest officer is the only factor that keeps them going.

Many NGOs have arranged general health check-up camps and provided first aid kits. The guards did admit to us that they don't know what medicines to use, as many of them can't read. Some guards from local tribes are not comfortable wearing shoes but wearing uniforms motivates all of them, they said.


The Kumble Foundation is working towards providing long-term solutions to some of these core issues. With an aim to improve the general health condition of the forest guards, they have collected details of health and medical support requirements. They intend to set up a group insurance for all the guards including temporary employees. Proposals have been made to the government too. Diinesh Kumble says, they are keen on supporting children of forest guards so that they can get vocational training, guidance and counselling once they complete their basic education. The Foundation is also looking for genuine requirements of assistance for higher education on a merit basis. The Jumbo Wildlife Award and Jumbo Fund have been set up with an initiative to reward wildlife champions and recognize the contribution of forest staff, researchers, NGOs and civil servants towards conservation. 

In a jungle that has a rich diversity of species and is constantly in the spotlight with three states fighting over some space on the highway, it was eye-opening to meet the heroes who run the show silently. A vehicle passes by this road every 47 seconds, lakhs of people traverse the road every day. Yet, the tale of these guards is mostly untold. They desire very little - appreciation, security, family time ... and a ear if you can lend one, for, they have a story to tell. 

P.S Thank you Diinesh Kumble and Shreyas Jayakumar for facilitating this meet.