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IB
4.3B Consumption of organisms from freshwater and marine environments

IB Environmental systems and societies 4.3B Consumption of Organisms from Freshwater and Marine Environments Key Definitions

1.1 Perspectives

1.2 Systems

1.3 Sustainability

2.1 Individuals, populations, communities and ecosystems

2.2 Energy and biomass in ecosystems

2.3 Biogeochemical cycles

2.4 Climate and biomes

2.5 Zonation, succession and change in ecosystems

3.1 Biodiversity and evolution

3.2 Human impact on biodiversity

3.3 Conservation and regeneration

4.1 Water systems

4.2 Water access, use and security

4.3 Aquatic food production systems

4.4 Water pollution

5.1 Soil

5.2 Agriculture and food

6.1 Introduction to the atmosphere

6.2 Climate change - causes and impact

6.3 Climate change - mitigation and adaptation

6.4 Stratospheric ozone

7.1 Natural resources - uses and management

7.2 Energy sources - uses and management

7.3 Solid waste

8.1 Human populations

8.2 Urban systems and urban planning

8.3 Urban air pollution

HL.a Environmental law

HL.b Environmental economics

HL.c Environmental ethics

4.3B Consumption of organisms from freshwater and marine environments Key Definitions

Definition

Aquaculture

Aquaculture is the controlled farming of aquatic organisms like salmon, tilapia, catfish, oysters and mussels.

Definition

Bottom trawling

Bottom trawling is an industrial fishing method that drags heavy nets along the seabed, capturing bottom-dwelling species but causing severe damage to habitats and high bycatch rates.

Definition

Ghost fishing

Ghost fishing is the unintended capture and death of marine organisms caused by lost or abandoned fishing gear that continues to function passively in the environment.

Key Definitions