Uprooted Mangroves have started to reappear
Flamingos count increased YoY
Fishing nets have increased in the vicinity of project
The Mumbai Trans Harbour link Project Package-2 being constructed in Joint Venture of Daewoo-TPL envisions conservation of Biodiversity and Environment as its utmost priority. The major challenges during the construction phase were Conservation of Mangroves, Mudflats, Keeping the Lesser Flamingo count constant and to ensure no harm to the fishing community of the region. We are happy to announce that we have been able to meet all the targets as on date
1. Flamingos count is increasing YoY
2. Fishing nets have increased in the vicinity of project 3. Uprooted Mangroves have started to reappear
1. Conservation of Mudflats
2. Reappearance of uprooted Mangroves.
3. Helping in maintaining Flamingo count constant.
4. Ensuring a steady fish catch for fishing community.
1. DTJV had an opportunity to showcase its conservation efforts under SDG Goals: Life under Water.
2. To be a responsible corporate player in terms of executing Marine projects without any harm to the pristine biodiversity of the region.
Restoration of Uprooted mangroves Mangrove Forest was cleared within the Main bridge ROW, permission for which was obtained prior to commencement of Works by the Employer. Muck generated during the piling activity in mudflat region and its collection was a major activity. Deposition of Muck on Mudflats would have led to degradation of Mudflats and this posed a serious threat to the Flora and Fauna of the region. The challenge was to keep the Mudflats alive between the main piles during construction activities. Ensuring Flamingo count doesn’t Drop The Lesser Flamingo migrate to the Package 2 area during November to July every year and the mudflats of Package 2 region act as a feeding ground for the Flamingos. Usage of Oil and Chemical at a construction site is a common activity. The major challenge was to eradicate any possibility of Oil and Chemical spillage and immediate response for any emergency keeping the Mudflat alive for optimal growth of Green-Blue Algae which is a food source of Lesser Flamingos and to keep the arrival number of Flamingos constant/increasing
Restoration of Uprooted mangroves: Since the mudflats are marshy land and muck collection is a major challenge even by using Reverse Circulation Drilling, Muck collection in the intertidal zone was carried out using muck collection tank. The filled tank was then emptied using Grab and transported to designated disposal area. The strategy was adapted first time in a construction project using fabricated muck collection tank which were installed on the Finger Area of the Temporary Access Bridge. In addition to that, a strict no waste disposal strategy in the Mudflats and Marine location was adapted at MTHL Package 2. Ensuring Flamingo count doesn’t Drop: Flocks of Lesser Flamingos arrive in thousands of numbers near MTHL Package 2. They feed on Cyanobacterial growth on Mudflats. Conserving the Mudflats to ensure optimal growth of these Green-Blue Algae, usage of CPCB compliant DG sets with Acoustic Enclosure and elimination of any possibility of Oil spillage was the strategy adapted at MTHL Package 2.
Restoration of Uprooted mangroves The positive Impact of the Collection of Muck generated during Piling Activity using the Muck Collection tank had ensured that the mudflats between main piles are kept alive to sustain Mangrove regrowth and conservation of Flora & fauna. Regrowth of mangroves to their original size is observed after the construction activities between the main piles. Ensuring Flamingo count doesn’t Drop: The positive impact of conserving the mudflats had resulted in optimal growth of Green Blue Algae in the Mudflats. This in turn has resulted in an increasing number of Lesser Flamingo arrival at MTHL Package 2. March 2020: 5612 nos, March 2022: 7687 nos (Source : BNHS data)
The initiative taken by DTJV management can be a key towards providing a learning for the upcoming projects in Mangroves and Mudflats region of Mumbai. Following are the key learnings from the project. Restoration of Uprooted mangroves The Intertidal Ecosystem is a very sensitive ecosystem; any changes in form of its composition can result in species loss and loss of Biodiversity of the region. The intricate web of the Food-cycle once disturbed may result in collapse of the whole Ecosystem. Proper baseline study, source of various pollution and Aspect/Impact study of various construction activities must be carried out in detail to ensure no damage to such a Fragile Ecosystem. Ensuring Flamingo count doesn’t Drop Migratory Birds, Flamingos are very sensitive towards noise pollution, light pollution and food availability. They avoid areas with Light Pollution, Noise pollution and less food availability. Keeping these key factors in check can result in increase of the Flamingo count.