Happy Monday!! 1/30/12 Happy Monday!! 1/30/12 • How are YOU? How are YOU? (today’s journal is just about (today’s journal is just about you…take a couple of minutes you…take a couple of minutes to write about yourself…try to to write about yourself…try to focus on the positive!) focus on the positive!) • Please get out your homework Please get out your homework
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Happy Monday!! 1/30/12 How are YOU?How are YOU? (today’s journal is just about you…take a couple of minutes to write about yourself…try to focus on the.
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Happy Monday!! Happy Monday!! 1/30/121/30/12• How are YOU? How are YOU?
(today’s journal is just about (today’s journal is just about you…take a couple of minutes you…take a couple of minutes to write about yourself…try to to write about yourself…try to focus on the positive!) focus on the positive!)
• Please get out your homework Please get out your homework
Chapter 18Chapter 18
1: Introduction to Ecology1: Introduction to Ecology
What is ECOLOGY?What is ECOLOGY?
• Study of INTERACTIONSStudy of INTERACTIONS• Organisms & environmentOrganisms & environment
• Living/non-living partsLiving/non-living parts
INTERDEPENDENCE is…INTERDEPENDENCE is…
• InterconnectednessInterconnectedness• Depend on envt & what’s in itDepend on envt & what’s in it
• What are we dependent on?What are we dependent on?
SE U.S. ForestsSE U.S. Forests• AcornAcorn production related to spread production related to spread
of of Lyme diseaseLyme disease?!??!?
• P. 360P. 360
Important to Study Ecosystems…Important to Study Ecosystems…What are Ecological Models?What are Ecological Models?
• Mathematical or conceptual way to Mathematical or conceptual way to describe an ecological systemdescribe an ecological system
• Help ecologists understand Help ecologists understand interactionsinteractions
• Make predictions about changesMake predictions about changes
• Environmental PlanningEnvironmental Planning
Levels of OrganizationLevels of Organization• HierarchyHierarchy• Ecologists Ecologists
usually focus usually focus on 1 on 1
• But are But are mindful of mindful of interactionsinteractions b/w levelsb/w levels
BIOSPHEREBIOSPHERE
• Earth, its Earth, its atmosphere atmosphere that that supports supports lifelife
• Deepest parts Deepest parts of oceans tooof oceans too
• ““skin of an skin of an apple”apple”
ECOSYSTEMECOSYSTEM
• All organisms All organisms & non-living& non-living environment in environment in certain areacertain area• Estuary Estuary
Internal Conditions:Internal Conditions:Conformers vs. RegulatorsConformers vs. Regulators
Who?Who?
Ex?Ex?
Different way of dealing with Different way of dealing with it...ESCAPE!!it...ESCAPE!!
• DormancyDormancy
• MigrationMigration
What was a habitat?What was a habitat?
• What’s a NICHE??What’s a NICHE??
• Role/way of life for the species in its Role/way of life for the species in its environmentenvironment• Range of tolerable conditions Range of tolerable conditions • Resources it usesResources it uses• # offspring# offspring• Time of reproductionTime of reproduction• Other interactions w/envtOther interactions w/envt
Generalist vs. SpecialistGeneralist vs. Specialist• Niche size?Niche size?
• WHY?WHY?
• Ex?Ex?
EarthwormsEarthworms
HW Check your answers!HW Check your answers!p.365 #1,2,4,5,6,7 p.365 #1,2,4,5,6,7
Niche Practice SheetNiche Practice Sheet
Happy Wednesday! Happy Wednesday!
• Questions about the project?Questions about the project?
• Don’t forget—test corrections! Due next Don’t forget—test corrections! Due next Wednesday!Wednesday!
Chapter 18Chapter 18
3: Energy Transfer3: Energy Transfer
Who needs ENERGY???Who needs ENERGY???
Producers vs. ConsumersProducers vs. Consumers• Other Other
name?name?
• Food?Food?
• Ex?Ex?
Chemosynthesis vs. PhotosynthesisChemosynthesis vs. Photosynthesis
• Producer?Producer?
• Energy Energy source?source?
• Ex?Ex?
How do ecologists MEASURE How do ecologists MEASURE what the producers do??what the producers do??• GPPGPP
• Producers capture sunlight, produce Producers capture sunlight, produce organic cmpdsorganic cmpds
• NPPNPP
• = GPP – respiration rate of producers= GPP – respiration rate of producers• Rate of biomass accumulationRate of biomass accumulation
NPP NPP Not the SameNot the Same for All for All Ecosystems!!Ecosystems!!
• Up the food chain/web…Up the food chain/web…why?why?
Food Chain vs. Food WebFood Chain vs. Food Web
Food Web ActivityFood Web Activity
• THEN HW CheckTHEN HW Check
Happy Thursday! 2/2/12
• Listen to the lyrics…then let it inspire you! Write a paragraph reflection!!
• Just a few lines that “speak” to me…– One to the air and the freshness we breathe
in…– One to the soldier who fights overseas…– One to the Lorax who speaks for the trees– Life is too short…
• “East to the West” – Michael Franti
Chapter 18Chapter 18
3: Energy Transfer3: Energy Transfer
Part Two!Part Two!
Energy PyramidEnergy Pyramid: amt of energy : amt of energy stored as organic material @ each stored as organic material @ each trophic leveltrophic level
• Pattern/trend??Pattern/trend??• Does all energy get transferred?Does all energy get transferred?• Trophic level # vs. level of consumer???Trophic level # vs. level of consumer???
Energy TransferEnergy Transfer
• 10% consumed @ one level 10% consumed @ one level • available to be transferred to the nextavailable to be transferred to the next• ““pyramid” shapepyramid” shape
Not all the energy @ one level Not all the energy @ one level gets passed on!gets passed on!
• Not all are eatenNot all are eaten
• Not all the organisms that are eaten Not all the organisms that are eaten are are digesteddigested by the next level by the next level
• Some energy’s used by that level Some energy’s used by that level itself for body processes, itself for body processes, cell cell respirationrespiration
• Always lose some energy as Always lose some energy as heatheat
So, if the 4th level’s really low..So, if the 4th level’s really low..
• How about a 5How about a 5thth??
Why so few top predators?Why so few top predators?
• Higher TL Higher TL support support fewer fewer individuals individuals b/c contain b/c contain LESS LESS ENERGY!!ENERGY!!
#1,3,4,5,6,9#1,3,4,5,6,9
Chapter 18Chapter 18
4: Ecosystem Recycling4: Ecosystem Recycling
Pyramid ActivityPyramid Activity
• TOMORROW…TOMORROW…
WATER CYCLEWATER CYCLE• Why do we need it?Why do we need it?