Lab 12 Spring 2017 ecosystems.docx - Name: Makenize Oborn...

This preview shows page 1 - 3 out of 7 pages.

Name: Makenize ObornGEOG 1000 – Earth’s Natural Environments: Physical GeographyLab 12 – BiogeographySpring Semester, 2017Note: If you have problems finding definitions to any terms or information needed to solve the problems, pleaseask.Use the back of the sheets if you need more room for your answers.1.Ecosystem analysis: Food web and trophic levelsA food chain or food web is divided up into trophic levels, or feeding levels.Organisms on any given levelwill have a similar food source.They begin with autotrophs, or self-feeders, which produce their own food.All other organisms are consumers who obtain their nourishment from the food they eat.Begin this exerciseby defining the following terms, which will help you understand the concept of trophic levels and foodchains.A.Define the following terms:Trophic Level:Hierarchical level in the food chain, each level consists of similar organisms.Producer (autotroph):A self-feeder, produces the needed nutrition from surroundings.Primary consumer:An animal that eats the Producer.Secondary consumer:the animal that eats the primary consumers.Top consumer:The animal that is at the top of the food chain, eat the secondary consumer.Detritivore (decomposer):animal that feeds on dead animals and organic material.Carnivore:Animal that eats meat
B.Describe the general characteristics of organisms at each trophic level.C.Classify the following organisms according to trophic level [Producers (pr), primary consumers (pc),secondaryconsumers (sc), omnivores or top consumers (tc), detritivores (dv)].Write the code after each species name inthe table.For example, most whales consume plankton and do not hunt and kill fish and mammals, so they are“Whale pc.”WhalepcCucumberPR

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 7 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Spring
Professor
CF.Lohrengel

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture