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Set of flashcards Details

Flashcards 312
Language English
Category Macro-Economics
Level University
Created / Updated 04.07.2025 / 04.07.2025
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Risks of water privatization for customers?

Private monopoly, higher prices, worse quality.

Risks for companies in water privatization?

Lack of info and heavy investments.

Risks for the state in water privatization?

Regulation failure and less tax revenue.

What is water scarcity?

Lack of freshwater to meet demand.

What affects water scarcity perception?

Water use habits and standards.

Two types of water scarcity?

Physical (lack of water) and Economic (lack of infrastructure).

Main drivers of blue water scarcity?

Population growth, economic activity, less rain, evaporation, pollution, poor management.

What causes green water scarcity?

Too little rain, too much evaporation, poor soil water retention.

Why is freshwater scarce?

Most water is salty; accessible freshwater is very limited.

What happened to water withdrawal in the 20th century?

It increased with population and economy growth.

What causes water scarcity globally?

Overuse, climate change, pollution, and poor management.

What causes noise pollution in oceans?

Shipping noise, seismic airguns, pile driving, low-flying planes, oil drilling, offshore wind turbines, dynamite fishing.

What impacts does ocean noise pollution have?

Stress in marine animals, disrupted whale movement, reduced communication, changed predator behavior.

How to reduce shipping noise?

Better maintenance, improved propeller design, focusing on noisiest ships, slowing speed.

What is sewage pollution?

Wastewater with feces, urine, nutrients, viruses, plastics polluting oceans.

Main sources of sewage pollution?

Old infrastructure, cruise ships dumping, floods, poor treatment, lack of sanitation.

What effects does sewage pollution cause?

Eutrophication, algal blooms, coral harm, destroyed mangroves, disease spread, fish death.

How to solve sewage pollution?

Green infrastructure, better sewage systems, wetlands, reed beds to clean water.

Sources of oil pollution in oceans?

Oil spills, refuelling leaks, pipeline breaks, shipping, dumping.

What happened in the 2010 Deepwater Horizon spill?

BP cost $65 billion for damages.

Effects of oil pollution?

Kills marine life, suffocates fish, coats birds, blocks light, causes health problems.

How to clean oil spills?

Contain with booms, skim oil, manual clean-up, protect wildlife (only 40% cleaned).

Negative effects of shipping on oceans?

Noise, collision risk, oil spills, ballast water harm, climate emissions.

What are problems from over-tourism on coral reefs?

Waste, pollution, reef damage by boats and divers, harmful wildlife interactions.

What is deep sea mining?

Extracting minerals from ocean floor with unknown environmental impacts.

Why is trawling bad for oceans?

Bycatch kills turtles, dolphins, seabirds; damages seabed and coral.

What is the state of global fish stocks?

30% overfished, 60% at sustainable limits.

What is Maximum Sustainable Yield (MSY)?

Max fish catch without harming fish population balance.

What is Maximum Multispecies Sustainable Yield (MMSY)?

Max catch for several species considering ecosystem interactions.

What is the tragedy of the commons?

Overusing shared resources causes depletion because everyone acts selfishly.

Consequences of overfishing?

Damages ecosystems, food chain imbalance, food insecurity, local fishers lose income.

Differences between large and small-scale fisheries?

Large: more catch per worker. Small: more sustainable, less fuel, better for ecosystem.

Environmental harm from aquaculture?

Mangrove loss, water pollution, acidification, pesticide use.

Social problems in aquaculture?

Poor regulations, bad labor, water conflicts, harms small fishers.

What is on-land aquaculture?

Fish farming on land to reduce ocean harm, better disease control but costly.

How many people face severe water scarcity yearly?

More than 4 billion for at least one month.

What is physical water scarcity?

Not enough water to meet all needs, often seasonal.

When does water stress happen?

When 25%+ of renewable water is used.

How does climate change affect water?

Changes rainfall, water availability, and ecosystems.

How many people in cities face water decline by 2050?

About 685 million in 570+ cities.