AIM: What is an Ecosystem?
description
Transcript of AIM: What is an Ecosystem?
Community,Community,
Ecosystem,Ecosystem,
PopulationPopulation
immigration & emigration immigration & emigration
Community,Community,
Ecosystem,Ecosystem,
PopulationPopulation
immigration & emigration immigration & emigration
AIM: What is an ecosystem?
How would you define the word “population” ?
All of the same type of organism living in a certain
place
…A homogeneous group…
DEFINITON:
A community is made up of ALL the populations that live in
a certain place.
…a heterogeneous group…
Question:
Do members of different populations in the same community interact with one
another?
How? List Example?
Question:
Are all of these interactions deliberate and intentional (ex: lion eats zebra) …
or
Are some of the interactions indirectly related without any deliberate interaction
Example
Where does a bee get food?
Is that direct or indirect?
Do you think the bee said: “gee, I got go over there and pollinate those flowers?”
That’s an indirect relationship.
Interactions
• DIRECT• Predator-Prey• Herbivores eating
plants• Bee gathering
nectar
• INDIRECT• The nitrogen of
“poopy” which helps the soil
• Scavengers• Bees pollinating
flowers
All the living things and nonliving things, in an
environment, combined together with their interactions
defines an ecosystem
An Ecosystem must have four characteristics!
1. Source of energy (99% of the time it is the sun. (There are some exceptions!)
2. Transfer of energy. One population using another as food which transfers the energy.
An Ecosystem must have four characteristics!
3. Breakdown of materials: Decomposition to raw materials and minerals
4. Materials and minerals are recycled to be used over and over again. (Including water!)
immigration & immigration & emigrationemigration
• Do population always live in the same place?
• Sometimes they emigrate from their current home
• Or, they immigrate to a new environment
Describe the parts of an ecosystem using the vocabulary list
Community, Ecosystem, Community, Ecosystem, PopulationPopulation
Community, Ecosystem, Community, Ecosystem, PopulationPopulation