1. Ecosystems Flashcards
Define ecosystem
Is all the organisms living in a community.
And non- living (abiotic) conditions.
Biotic conditions.
Living features of an ecosystem.
Predators or food.
Abiotic conditions.
Non living features.
Temp.
Soil.
Example.
Fresh water ecosystem
Biotic contains- fish.
Abiotic - temp of water
can be large or small.
Pond.
Or
Entire ocean.
Habitat definition.
Place where organism lives within an ecosystem.
Eg reeds
What does each species have within a habitat?
It’s own niche.
Define niche.
The role of a species within its habitat.
Example of niche.
What it eats.
Where and when it feeds.
What interactions does the niche include.
Biotic - organisms it eats and those it’s eaten by.
Abiotic - temp range an organism can live in, time of day when organism is active.
Every species has its own unique niche.
A niche can only be occupied by one species.
It may look like 2 species are filling same niche but thee is variations
Example.
Common pipistrelle bat
Soprano pipistrelle bat
Common pipistrelle bat - Britain farmland, open woodland, hedgerows and urban areas. Catches insets using high pitched sounds of 45 kHz
Saprano pipistrelle bat - woodland areas, near lakes. Catching insects using echolocation at 55 kHz
Slight differences in echolocation
What happens if 2 species occupy same niche ?
They will compete.
One species will be more successful.
One only left.
What is an adaptation?
Features that members of a species have that increased their chances of survival and reproduction.
What type of features can they be ?
Physiological - inside body.
Behavioural - acts
Anatomical - strictures
