lab 11 - ecology ppt
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EcologyPlantsTRANSCRIPT
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Lab 11 - EcologyTA:
Email:
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Agenda
Today Evaluations
Quiz 10 Lab 10 (75%) and Lab 11 (25%)
Lab 11 Ecology
Last lab of the semester
Good Luck for Finals!!!!
**Grades will be uploaded soon.
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Ecology
Greek word oikos means house abd ology means study of Ecology study of the house (earth) where organisms
live
Each organism interact with one another
Ecology is a widely diverse and complex area of study
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Ecological Relationships
1. Population a group of individuals of the same species occupying the same geographical location at the same time1. students
2. Community all the populations that occupy the same geographical location at the same time1. Campus
3. Ecosystem the combination of a community with the non-living physical and chemical environment.1. Campus + climate + water + food + etc
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Energy Flow
Autotrophs (producers) capture energy from environment and convert it into "food
Heterotrophs (consumers) must eat things
Herbivores eat plants
Carnivores - eat animals
Omnivores eat both plants and animals
Detritivores / Decomposers eats dead organisms & organic wastes
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Trophic levels
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Energy Flow Through an Ecosystem
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Population Growth Rate
Lag phase
Log or exponential phase
Equilibrium phase
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Survivorship Curves
Survivorship curves are used to learn about the pattern of lifespan within a population.
In population I most individuals reach adulthood, and there is a large die-off of individuals as the population nears the end of it normal lifespan.
Population II has a fairly constant mortality throughout the lifespan of the population.
Population III has very high mortality of the young, but those individuals that do reach maturity live long life with a low death rate.
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Thank you