Biological impact assessment of kalabagh dam
-
Upload
zainab18 -
Category
Environment
-
view
40 -
download
6
Transcript of Biological impact assessment of kalabagh dam
FLORA AND FAUNAVast variety of plants and
animals
23 Species of medicinal
plants
And the signature vegetation
: Mangroves
CHECKLIST FOR BIOLOGICAL IMPACT ASSESSMENT OF KALABAGH DAM
Biological Factors Pre Construction Construction Operation
Flora
Fauna
Unique Wildlife Resources
Threatened Species
Crop Production
Mangroves• Mangrove forest cover an area of almost
0.32 MA • Spreading from Karachi in the west to
Rann of Kutch in the east• 95% of the population now consist of a salt
tolerant variety
• Extent of the active delta area is about
294,000 acres.
• Out of this, the mangroves cover only
7,400 acres or 2.5% of the area
Cause of mangrove decline is actually tidal inundation, not fresh water decline.
In fact, it is seen that after building a dam, mangroves usually flourish rather than declining.
After Project Mitigation
Salt tolerant and controlled fresh water in-taking plants will be installed.
Fisheries
After formation of dams and barrages, fish
population usually increases.
Example : Kotri Barrage
Fish will remain unaffected.
But if, problem arises
• Fresh water reservoir(s) for fish farming
will be provided to local people.
• And subsidies will be given to local people
for their loss
But, now
• P.minor has adapted to muddy and silted
water
• Now the main problem is not ‘diversion’
but ‘illegal catching’
What Kalabagh Dam will Provide
• Proper Monitoring
• Reducing their catching
• Provision of funds to organizations like
WWF
In the riverain area downstream to Kotri Barrage, groundwater is predominantly
saline or brackish and as such unsuitable for either irrigation water supply.
Solution
After Kalabagh, winter supply in the river would improve thus assuring more suitable
water for irrigation.