Aswan Damn

Question 1

How much did the Aswan damn cost?

Answer 1

$1 billion

Question 2

How has the Mediterranean been affected by the damn?

Answer 2

Reduced marine productivity, due to a lack of nutrients. (Incredibly hard if not impossible to reverse)

Resulting the Sardine catch becoming less than half the previous amount.

–> Could cause economic losses and food security issues.

Question 3

How has the Mediterranean been affected by the damn in terms of the sediment/sediment budget?

Answer 3

Reduced amount of transportation to the coastline, negative sediment budget/sediment starvation.

Leads to smaller beaches and deltas. –> increased coastal erosion –> causing possible return to dynamic equilibrium (via negative feedback).

Question 4

What is Schistomiasis?
How is it caused by the damn?
And what are its effects?

Answer 4

Parasitic worms that increase when in still or standing water (e.g. a damn).

The worms are on host animals which are snails, the snails are able to breed easier when in still or standing water.

Potentially causing long term health impacts, causing Schistomiasis in humans.