31 - Reservas de Água Doce

Reservas de Água Doce 31
Set 5 www.climatefresk.org 31 As reservas de água doce são afetadas pelas mudanças nas precipitações e pelo desaparecimento das geleiras que desempenham um papel regulador na vazão dos rios.

3
Causes

Derretimento das Geleiras

Derretimento das Geleiras

Melting glaciers threaten water supplies. Indeed, the relative importance of glacier melt water in summer can be considerable, contributing for example to 25% of August flows in the basins draining the European Alps, with an area of about 105 km2 and only 1% glacial cover. Their disappearance could be catastrophic for cities located in valleys watered by rivers flowing down from the surrounding mountains and for freshwater fauna. Glacier meltwater also increases in importance during droughts and heat waves.
Enchentes

Enchentes

Flooding can lead in some cases to contamination of freshwater resources and affect drinking water systems.
Secas

Secas


2
Consequences

Declínio da produção agrícola

Reservas de Água Doce


Conflitos Armados

Reservas de Água Doce


1
Other possible cause

Submersões

Submersões

If seawater rises, it can penetrate the water tables, which are freshwater reserves.

2
Other possible consequences

Fome

Reservas de Água Doce

If we consider that hunger and famines are not only a lack of food but also a lack of water.
Saúde Humana

Reservas de Água Doce

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