Welcome to Class Where does most of our energy come from?

Agenda Finish Microscope Lab Ecology & Ecosystem notes Food Chains and Food Webs

Welcome to Class What are the levels of organization in ecology?

Agenda Quiz Finish Ch 10 study guide Food Chains and Food webs notes –Food Chain practice

Online Bio Books Access Code: CCF Glencoe.com

Ecology Def. – study of relationships between living organisms and their environment

Organization Organisms – individual member of a population Populations – members of a single species that live in once place at a single time Communities – living parts of ecosystem –Lake – fish, turtle, algae, bacteria, etc

Organization Ecosystem – all organisms and non-living environment in an area –Biotic – living –Abiotic – not living Biome – large group of organisms that share same climate and have similar types of communities Biosphere – every living thing on Earth

Habitat vs. Niche Habitat – an area where an organism lives The role a species plays in its environment –range of conditions the species can tolerate –Methods to obtain resources –# of offspring –Other interactions Compare and contrast habitat and niche

Food Webs and Food Chains All energy in an ecosystem starts with the SUN Producers – use sun’s energy –Make their own food - autotrophs –Plants

Consumers – eat other organisms (heterotrophs) –Primary – eat plants –Secondary – eat other consumers Herbivores – plant eaters Carnivores – meat eaters Omnivore – eat both meat and plants Decomposers – eat dead organisms (detritivores)

Food Chain Pathway of feeding relationships among organisms in an ecosystem –Results in energy transfer (shown by arrows)

Food Web Interrelated food chains –Shows energy transfer (shown by arrows)

Energy Pyramid Shows trophic (feeding) levels and energy available to each level –10% energy gets passed to each level –Lose 90% to living (respiration)

Welcome to Class What happens to an ecosystem if we remove the producers?

Agenda Review food chains/food webs –Short video Outside to explore local food chains/webs Ecosystem/food web video

G4nb3Mhttp:// G4nb3M