ecology chapters 34-38. what is ecology? study of how organisms interact with each other and their...
DESCRIPTION
Key Terms Biosphere – part of planet in which all life exists (includes water, land, air) Ecosystem – most complex system a biologist studies Consists of a community and a habitat Community – populations of different species that live in one area Ex: animals, plants, fungi, etc. in a forest Habitat – physical location where a community lives Ex: soil and water that make up a forestTRANSCRIPT
EcologyEcology
Chapters 34-38Chapters 34-38
What is ecology?What is ecology? Study of how Study of how
organisms interact organisms interact with each other and with each other and their physical their physical environmentenvironment
Greek origin “oikos” Greek origin “oikos” meaning house meaning house
Key TermsKey Terms Biosphere – part of planet in which all life Biosphere – part of planet in which all life
exists (includes water, land, air)exists (includes water, land, air) Ecosystem – most complex system a Ecosystem – most complex system a
biologist studiesbiologist studies Consists of a community and a habitatConsists of a community and a habitat
Community – populations of different Community – populations of different species that live in one areaspecies that live in one area Ex: animals, plants, fungi, etc. in a forestEx: animals, plants, fungi, etc. in a forest
Habitat – physical location where a Habitat – physical location where a community livescommunity lives Ex: soil and water that make up a forestEx: soil and water that make up a forest
Different factors that Different factors that shape ecosystems…shape ecosystems…
Biotic factors – living influences on Biotic factors – living influences on ecosystemsecosystems Interactions with birds, trees, mushrooms, Interactions with birds, trees, mushrooms,
etc.etc.
Abiotic factors – non-living influences Abiotic factors – non-living influences on ecosystemson ecosystems Temperature, precipitation, wind, humidityTemperature, precipitation, wind, humidity
Energy FlowEnergy Flow Food ChainsFood Chains
Shows simplest feeding relationships Shows simplest feeding relationships between organismsbetween organisms
Grass Grass mouse mouse snake snake hawk hawk
Energy Flow, cont’d.Energy Flow, cont’d. Food WebsFood Webs
Complex diagram showing how ALL Complex diagram showing how ALL organisms are connected in a habitatorganisms are connected in a habitat
Trophic LevelsTrophic Levels Number of steps away from the sun in food Number of steps away from the sun in food
chains/webschains/webs
Level 1 = Plants/producersLevel 1 = Plants/producers Level 2 = Primary consumer/herbivore Level 2 = Primary consumer/herbivore Level 3 = Secondary Consumer/ carnivoreLevel 3 = Secondary Consumer/ carnivore Level 4 = Tertiary Consumer/ top carnivoreLevel 4 = Tertiary Consumer/ top carnivore
Trophic Trophic Level Level ExamplExamplee
Level 1
Level 2
Level 3
Level 4
Level 5