Salmon Life Cycle
What stage comes after egg in the salmon life cycle?
Alevin
What does pH stand for?
Potential of Hydrogen
What is a producer in an ecosystem?
An organism that makes its own food (like algae or plants
Where does almost all energy in a food web come from originally?
The Sun
What is the term for where freshwater meets saltwater?
Estuary
Where do salmon go after they become smolts?
Into the ocean
What number range is considered acidic on the pH scale?
0-6 (under 7)
What is a consumer?
An organism that eats other organisms
What process do plants use to convert sunlight into energy?
Photosynthesis
What is the scientific word for fish eggs?
Roe
What stage do salmon reach when they return to their home stream to lay eggs?
Spawning adult
What tool do we use to measure pH in water?
pH strips or digital pH meter
What is a decomposer?
An organism that breaks down dead things and returns nutrients to the so
Why is dissolved oxygen important in water?
Fish and aquatic organisms need it to breathe
Which element makes up most of water?
Hydrogen (H₂O is 2 hydrogen, 1 oxygen)
What happens to most salmon after they spawn?
They die and decompose
Why is it important to test the pH of water in a fish habitat?
Because too high or too low pH can harm or kill fish
Give an example of a freshwater predator.
Bear, eagle, larger fish
What is one thing that can lower oxygen levels in water?
Pollution, overgrowth of algae, heat
Name one way humans help protect salmon habitats.
Riparian planting, fish ladders, pollution reduction
What is one challenge salmon face when returning to spawn?
Dams, predators, low water levels, pollution, etc.
What is a neutral pH value?
7
Which role do salmon play in the food web after they die?
Decomposer food source / nutrient recycler
Why do salmon need cold, clean water to survive?
Cold water holds more oxygen and reduces stress on their bodies
What traditional food is made from dried salmon by Indigenous Peoples?
Salmon jerky or smoked salmon strips (dried fish)