1. Principles of Ecology

2.  Study of the interactions among organisms and their environments

3.  Nonliving part of an organisms environment  Wind  Climate  Rain  Temp  Light

4.  Living parts of an organisms environment  Plants  Animals

5.  Cell  Tissue  Organ  Organ System  Organism  Populations  Communities  Ecosystems  Biosphere Remember these?

6.  Group of organisms of one species that interbreed and live in the same place at the same time.

7.  Collection of interacting populations

8.  Made up of the interactions among the populations in a community and the community’s physical surroundings (abiotic)

9.  Terrestrial---land based  Aquatic---freshwater and saltwater

10.  Portion of the earth that supports living things (extends from the bottoms of the oceans to high in the atmosphere)

11.  Place where an organism lives out its life (home)

12.  Role and position a species has in its environment (job)

13.  Symbiosis – close and permanent association among organisms of different species (meaning living together)  This bird keeps his teeth clean  The bird gets food

14.  Commensalism – one species benefits and the other species is neither harmed nor benefited

15.  Mutualism – both species benefit  The bee gets fed, the flower reproduces (pollen)

16.  Parasitism – one organism benefits at the expense of the other

17.  Energy is the ability to do work  Energy takes the form of a pyramid as it flows through a community.  Ultimate energy source = SUN

18.  Autotrophs – Producers  Organisms make their own food (plants, bacteria, some algae)

19.  Organisms that depend on others for their food Herbivores – plant eaters Carnivores – meat eaters Omnivores – eat both

20.  Scavengers – eat animals that are already dead  Decomposers – feed of dead and decaying matter  Fungi  Bacteria  protozoan

21.  Energy is transferred in a community by means of a chain

22.  Food web is an expression of all the possible feeding relationships at each trophic level in a community