Tracking the flora and fauna at our Puttakere

We are happy to have created a project space for Puttenahalli Lake on the iNaturalist platform 
- for all of us to track the flora and fauna found in our lake. 

Please explore  https://www.inaturalist.org/projects/puttenahalli-lake  and add your observations - from the little spider in a corner of the gazebo at the lake to the statue-like heron waiting to snatch a fish from the water. 

To do this, you need to join the group. Please follow the directions given below: 

On Web browser:

- Go to https://www.inaturalist.org. Log in with your Gmail/Facebook ID or sign up with your email ID.

- On the top menu, go to Community >Project. In the input box, enter Puttenahalli Lake and click Go.

- You will see Puttenahalli Lake Project. Click on it. 

- On the top right side you will see Join this Project. Click and  become a member
of Puttenahalli Lake Project.

On Mobile
- Install iNaturalist from Playstore or Appstore.

- Log in as mentioned for Web browser above.

- Select Projects on the hamburger.
- Search for Puttenahalli Lake Project in the search box.
- Puttenahalli Lake Project will show up. Click on it. 

- Click on Join button to become a member.

Upload the photographs of birds, trees, plants, insects that you take at our Puttenahalli Lake
for everyone to see and admire.

 

- Do not worry if you don't know the name of the bird, tree, plant or insect.
This is a global community of naturalists. Someone from somewhere will identify it for you!

- Do not worry if the species is already uploaded. The more the better!

- Please upload good photos. The greater the clarity, the easier to identify the species!

- And please add only photographs taken at our Puttakere to this page!  

A quick update on the lake - While the sewage inflow has stopped and the rain is
diluting the sediment, it is still providing rich nutrition for the weeds to grow and
cover the water. 

                                  Removing weeds

BBMP is getting the weeds removed. This time, there are several new ones and we are
constantly sending photos to Dr. Subbu to identify! His comment on the two species
in the photograph is particularly heartwarming. 

"Chara sp. and Ottelia alismoides... These two mostly grow in clean waters:
like the lakes of Bangalore in the 1980s."

In spite of the impurities, the exposed water does look delightfully clean.

We hope it improves further in the days to come!

Artificial Floating Islands in our lake

Those of you who visited Puttenahalli Lake within the past few months may have noticed small platforms floating in the water. These are Artificial Floating Islands (AFIs) which we "launched", starting in June this year. The Vetiver and Canna planted in them are growing beautifully. PNLIT trustee Nupur, her husband Pranshu Jain together with our gardener, Jayanna, are the builders of five AFIs. With volunteers from Deloitte making two last Friday we now have seven AFIs. 

AFIs, Sep 2016

A Coot's nest in one of the AFIs

Deloitte volunteers with the AFIs they made, 25-Nov-2016

Briefly about the AFI - this is a variant of the wetland, an innovative way to improve water quality and keep the lake clean. In this system of Hydroponic Phytoremediation, plants in floating platforms absorb pollutants in the water to grow. AFIs are widely used abroad but not yet popular in India. 

Simultaneously with the AFIs, we began monthly testing of the water. We are delighted to see steady improvement in the each of the eight parameters we measure - pH, Turbidity, DO, BOD, Total Solids, Total Dissolved Solids, Nitrates and Phosphates. Some parameters still need improvement, but the trends are very encouraging. It may be too early to attribute this improvement to just the AFIs since they are few in number. We have been also curtailing the growth of aquatic weeds thereby exposing more water to the sun.  

Our sincere thanks to BMS College of Engineering for testing the water samples every month, their invaluable contribution to PNLIT. To Srinivas SK for analysing the test results.  CSR support from Deloitte Shared Services India Pvt Ltd. enabled us to remove the thick spread of invasive weed from the water, to hire people to keep the water clear of new sprouts as well as to fund the AFIs. 

Usha

Nesting waters, blooming gardens

With the heavy rains, it is a delight to see how much water has entered the lake this monsoon and how quickly it has become a nesting haven for birds. The weeds are being removed from the lake by a dedicated workforce but stray little weed patches here and there, that have birds' nests in them have been left untouched. The bigger 'islands' have been retained deliberately for birds to shelter from overhead predators. 

The gardens of the lake and the trees have also been well fed by the rains. The blooming flowers are bustling with butterflies and other creatures. 

Pics: taken today, Usha Rajagopalan