Warm-up: DP
students built tiny
closed ecosystems.
Brainstorm all of the
components that you
think they should have
included.
Recipe for an ecosystem…
Chapter Mystery: Narragansett
Bay, Rhode Island
Chapter Mystery: Narragansett
Bay, Rhode Island
Why are flounder disappearing?
Puzzling changes in microbes in
beach sediments
How are these observations
linked?
INTERACTIONS
What can interactions teach us
about our planet?
What is the human impact on
essential interactions?
Chapter 3:
I. Levels of organization in the environment
II. Types of interactions
a. Biotic vs abiotic
b. Consumers and producers
III. Energy flow
IV. Nutrient Cycles
What Is Ecology?
Learning Objectives
§  Describe the study of ecology.
§  Explain how biotic and abiotic factors influence an
ecosystem.
§  Describe the methods used to study ecology.
Ecology
The scientific investigation and
analysis of interactions among
organisms and their responses
to external factors in their
environment
Species and Populations
Species
Population
Community
Population
Community
Ecosystem
Community
Ecosystem
Biome
Ecosystem
Biome
Biosphere
Biome
Biosphere
Biotic and Abiotic
Biotic
Environment
Abiotic
Ecological Methods
•  Observation
•  Experimentation
•  Modeling
Levels of Organization
Community
Population
Biome
Organism
Ecosystem
Biosphere
Chapter mystery…
https://www.youtube.com/watch?v=FSzuGkcnAxc
Energy, Producers, and Consumers
Learning Objectives
§  Define primary producers.
§  Describe how consumers obtain energy and nutrients.
Primary Producers
Photosynthesis
Chemosynthesis
http://ocean.si.edu/ocean-videos/hydrothermal-vent-creatures
Chemosynthesis
Energy Sources
Photosynthesis
Chemosynthesis
Consumers
Herbivore
Carnivore
Omnivore
More Consumers
Scavenger
Detritivore
Decomposer
How are these observations
linked?
INTERACTIONS
Chapter Mystery….
What factors link the different
elements of the story?