Abiotic Factors
What is an abiotic factor?
Something that effects the ecosystem that is not alive.
What is a biotic factor?
Something that effects the ecosystem that is alive.
Narwhals use their tusk for what?
Sensing the ocean water and stunning food (fish)
What is the first step to determine how many animals of a species are in an area?
You have to mark or tag a certain number of the species.
What is an ecosystem?
An area where everything (plants, animals, weather, landscape) works together to form a bubble of life.
How does an increase in ocean temperature affect coral?
It decreases the coral because the algae in them leave.
What is an invasive species?
Bonus: Give an example.
A plant of animal that comes from a different ecosystem and is not supposed to be there.
A sea angel eats what?
A sea butterfly
If we have two lakes of equal size and we tag 100 fish in one lake and 200 fish in another lake, which population estimate will be more accurate?
The lake with 200 fish tagged.
Give me an example of three different ecosystems.
Could be lots of different answers.
How does an increase in ocean pH affect shellfish?
It makes it harder for them to form shells.
If a species' prey decreases in population, what will happen to that species?
It will decrease as well.
A capelin roll
What is the purpose of tagging animals?
To track there movements, estimate their population, collect data about their predators and prey, listen to how they communicate. (A lot of things, not just population estimation)
List three abiotic parts of an ecosystem.
Water, air, rocks, nutrients, viruses outside of their host
How does logging affect marine ecosystems located beside the forest?
It makes the water muddier which lets less sunlight through. This affects many different species of animals and plants.
If a species' predators decreases in population, what will happen to that species?
It would increase in population.
Beluga whales use their melon for what?
The direct their echolocation
How many seals are in an area if I originally tagged 72, then caught 15 and 6 had tags.
180 seals
List three biotic parts of an ecosystem.
Plants, animals, dead plants and animals, fungi, bacteria
How does agriculture effect marine ecosystems located beside farm land?
It adds nutrients to the water increasing the amount of algae. This can use up oxygen in the water killing fish.
List three biotic factors that effect marine ecosystems.
Invasive species, disease, population of predators and prey
Why does a bowhead whale have a hip bone?
Because it's ancestors walked on land.
How many fish are in a pond if I originally tagged 50 fish, then caught 20 fish and 8 were tagged?
125 fish
Are marine ecosystems connected?
Yes, pollution can last many years and travel through many marine ecosystems because of the fluidity of water.