5.3.2 Aquaculture

• What does aquaculture involve?

  Farming aquatic organisms
• Aquaculture yields are lower and less predictable than wild fisheries.

  False
• Steps in traditional aquaculture practices

  1️⃣ Rely on natural water bodies

  2️⃣ Use low-intensity farming methods

  3️⃣ Focus on polyculture

  4️⃣ Utilize local, indigenous species
• Modern aquaculture often uses non-native species that are fast-growing and high-yielding.


  True
• Aquaculture involves controlled breeding in a managed environment
• Order the primary types of aquaculture based on their environment:

  1️⃣ Freshwater

  2️⃣ Marine

  3️⃣ Brackish

  4️⃣ Land-Based Systems
• Marine aquaculture requires suitable coastal locations and salinity management.

  True
• Overfishing in wild fisheries can deplete natural stocks
• Match the type of aquaculture with its environment:

  Freshwater ↔️ Rivers, lakes, ponds

  Marine ↔️ Oceans, seas

  Brackish ↔️ Estuaries

  Land-Based Systems ↔️ Tanks on land
• Modern aquaculture systems employ high-tech solutions like water recirculation and aeration
• What is one environmental impact of modern aquaculture?

  Higher negative potential
• Overfishing in wild fisheries can deplete natural stocks.


  True
• Freshwater aquaculture requires controlled water temperature and pH
• Freshwater aquaculture typically occurs in rivers, lakes, and ponds
• Which type of aquaculture tolerates varying salinity levels?

  Brackish
• Arrange the types of aquaculture from lowest to highest environmental impact:

  1️⃣ Freshwater

  2️⃣ Brackish

  3️⃣ Marine

  4️⃣ Land-based
• Modern aquaculture systems employ high-tech solutions like water recirculation and automated feeding
• Match the resource input with its corresponding aquaculture type:

  Minimal external inputs ↔️ Traditional aquaculture

  High external inputs ↔️ Modern aquaculture
• Habitat destruction is a higher risk in modern aquaculture due to the need for new facilities
• Sustainable aquaculture practices aim to mitigate environmental impacts


  True
• What is the purpose of water recirculation systems in sustainable aquaculture?

  Reduce water consumption
• Aquaculture contrasts with wild fisheries, where aquatic organisms are caught from their natural habitats
• What is a key characteristic of traditional aquaculture in terms of resource inputs?

  Minimal external inputs
• Match the characteristic with its corresponding aquaculture type:

  Intensive, high-tech ↔️ Modern aquaculture

  Extensive, low-intensity ↔️ Traditional aquaculture
• Modern aquaculture systems use high external inputs such as feed, energy, and chemicals
• Traditional aquaculture uses minimal external inputs.


  True
• What type of farming system is used in modern aquaculture?

  Intensive farming systems
• What are the primary types of aquaculture based on environment?

  Freshwater, marine, brackish, land-based
• Marine aquaculture requires suitable coastal locations for salinity management


  True
• Land-based aquaculture systems use tanks on land, providing high control over water quality
• What are two key aspects of freshwater aquaculture management?

  Water temperature and pH
• Polyculture is a characteristic of traditional aquaculture


  True
• What type of pollution is lower in traditional aquaculture compared to modern aquaculture?

  Nutrient, chemical, organic
• What are two risks associated with modern aquaculture regarding disease and invasive species?

  Disease transmission and escape
• Arrange the steps in Integrated Multi-Trophic Aquaculture (IMTA):

  1️⃣ Waste from fish is produced

  2️⃣ Waste is used as a resource for shellfish

  3️⃣ Seaweed absorbs excess nutrients

  4️⃣ Balanced ecosystem is created
• Match the sustainable aquaculture practice with its benefit:

  Responsible siting ↔️ Avoids sensitive habitats

  Natural feeds ↔️ Reduces chemical pollution

  Biosecurity measures ↔️ Prevents disease
• Aquaculture can be sustainable if managed properly


  True
• Modern aquaculture uses controlled farming systems like tanks, raceways, and cages
• Traditional aquaculture relies on non-native, high-yielding species.

  False
• What is the environmental impact of traditional aquaculture compared to modern aquaculture?

  Lower impact