Transcript Ecology part 1

Unit 11-Ecology
Chapter 16 & 17 in
your Holt Biology
textbook
 Ecology
- Study of interactions between
organisms and environment
 Population
– same species, living
together
 Community – several populations, living
together
 Ecosystem - abiotic & biotic
components of an area
Biotic factors – all of the living things in a
habitat
 Abiotic factors – all of the non-living things
in a habitat

◦ Soil
◦ Water
◦ Weather

Habitat – where a population lives

Niche – function of a species in its
community (its job)
What
are 4 things must all
habitats provide?
Come
up with 4 on your own
Then pair up with someone
near you and compare your
answers
Energy in an Ecosystem

Producers – plants; produce energy by
photosynthesis

Consumers – eat to obtain energy
The Consumers
•Herbivores•Carnivores
–
•Omnivores
–
•Detritivores–
•Decomposers
–
Consumer Map
Create a tree map in your journal
 Under each type of consumer list each
characteristic they have

___________
___________
___________
___________
___________
Challenge #1
Habitats
T. Trimpe 2008 http://sciencespot.net/
Answer each question.
1. What do we call the place where an organism lives?
2. What four things does a good habitat provide?
3. What are two biotic factors in the habitat of a field mouse?
4. Why do you find different kinds of organisms in different habitats?
The answers are …
1. What do we call the place where an organism lives?
Habitat
2. What four things does a good habitat provide?
Food, water, shelter, and space
3. What are two biotic factors in the habitat of a field mouse?
Grass or other plants, insects, snakes, gophers, hawks, owls
4. Why do you find different kinds of organisms in different habitats?
Different organisms need different things to survive.
Some organisms can survive in a desert, but others cannot.
Challenge #2
Levels of Organization
T. Trimpe 2008 http://sciencespot.net/
Answer each question.
1. What term refers to all the members of one species in a particular area?
2. What do we call all the different populations that live in an area?
3. What term refers to all the living and nonliving things that interact in an
area?
4. Organize these terms from the smallest to the largest.
Community, Organism, Ecosystem, Population
5. What do we call a scientist who studies how living things interact with each
other and their environment?
The answers are …
1. What term refers to all the members of one species in a particular area?
Population
2. What do we call all the different populations that live in an area?
Community
3. What term refers to all the living and nonliving things that interact in an
area?
Ecosystem
4. Organize these terms from the smallest to the largest.
Community, Organism, Ecosystem, Population
Organism  Population  Community  Ecosystem
5. What do we call a scientist who studies how living things interact with each
other and their environment?
Ecologist