Aquatic food webs

phytoplankton

Photosynthetic plankton, which are usually unicellular aquatic small organisms.

Blue foods

Foods come from aquatic algae, plants or animals

Why are blue foods better than terrestrial foods

• lower greenhouse gas emissions and reduced impact on land and water. They also offer nutritional benefits and contribute to the livelihoods of communities,

phytoplankton (role)

They produce more than half of the world's oxygen, sustaining life both in and out of water. Phytoplankton are the starting point of a complex and intricate web of life that sustains fish, birds and countless other marine organisms, including gigantic whales. Without phytoplankton, it is likely that all life on Earth would end.

Food webs

Two or more food chains linked together; it shows that a single species can occupy multiple trophic levels.

Food chains

A linear model of relationships between trophic levels.

Trophic levels

The position that an organism occupies in a food chain, or the position of a group of organisms in a community that occupy the same position in food chains.

Globalization

The increasing tendency of people, ideas, goods, services and money to move between countries.

Organisms capture light energy for the aquatic system

• phytoplankton

• macrophytes (seaweeds, kelps)

How does globalization affec global consumption of aquatic organisms

• increased carbon footprint

• increased consumption of different foods

Ways to get blue food

• aquaculture

• wild caught

Aquaculture

the farming, breeding, rearing, and harvesting of plants and animals in all types of water environments including ponds, rivers, lakes, and the ocean.

Wild caught

fish and other seafood that are harvested directly from their natural environments, such as oceans, rivers, and lakes.