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Global Warming – Impacts (Impacts of global warming (Food production and…
Global Warming – Impacts
Case Study : Mediterranean Basin
Spatial Variation
vulnerable Mediterranean
areas
high population
High social vulnerability
Coastal areas
local subsidence becomes a big proble
affect the southern and eastern
Mediterranean countries most affected
exposed to:
accelerated desertification
soil aridity
water scarcity
less potential
for good governance,
Impact of global warming
Increase in hot summer days
Due to increase in rate of greenhouse gas emissions
Global change detection
Hard to detect
due to high level of natural
variability
Case Study : Egypt
Vulnerable to effect of global warming
Most of Egypt is a desert
4% can be used for agriculture. 60% of that in Nile Delta
Effect of Global Warming
More desertification = no agriculture
Main industry lost
Nile Delta easily affected by sea water rise
Global Warming to Egypt's future (Sea rise of 1.0m by year 2100)
loss of nation's food supply
seawater contaminates fresh ground water and contaminates water supply
25% of delta flooded, people forced to migrate
half a million people in Alexandria will be displaced
Exported items could be damaged
Impacts of global warming
Water Wars
decrease in water availability can cause unrest
not all conflicts are
trans-boundary.
Migration
North African countries used as transit countries for migrants to reach Europe
European countries tighten immigration control
Sub-Saharan migrants stress natural resources on North African regions
Food production and Agriculture
Grassland ecosystems come
under stress
Unable to support livestock
water supplies salinised by seawater
Irrigation near coastal locations
Food security problems can arise
Geopolitics
Good governing and communication can reduce global warming
Desertification
Desertification increase:
less soil moisture
more erosion
fire risk
Saltination
changes in land use driven
by population growth and migration
Tourism
Lose popularity as tourist destination
Water Supply
Reduce of annual rainfall = reduction of water supply
Freshwater contamination by seawater
Extreme water stress in poorer countries - cannot buy water
Public health
Food insecurity due to climate change weaken immune system
Heat waves and pollution increase respiratory issues
Change in climate = Change in number of natural disasters = deaths
Loss of Ecosystem
Species don't have enough time to adapt to new conditions - death by natural selection
Coastal ecosystem threatened by rising sea levels