Science 7 notes glb lab 04 beneath the surface
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Science 7 notes glb lab 04 beneath the surface






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    Science 7 notes glb lab 04 beneath the surface Science 7 notes glb lab 04 beneath the surface Presentation Transcript

    • Beneath the SurfaceObserving an Aquatic Ecosystem
    • Key Objectives: The student will:– Investigate and understandthe carbon, nitrogen andwater cycles
    • Key Objectives: The student will:– Differentiate among keyprocesses in the water,carbon and nitrogen cyclesand analyze how organismsfunction to recycle matter intothe ecosystem
    • Key Objectives: The student will:– Recognize that the carbondioxide oxygen cycle is partof photosynthesis
    • Key Objectives: The student will:– Define and/or identify theliving (biotic) and nonliving(abiotic) components /factorsof an ecosystem
    • Key Objectives: The student will:– Observe local ecosystemsand measure and classify thebiotic and abiotic factors
    • Key Objectives: The student will:– Define and describe a simplefood chain
    • Key Objectives: The student will:– Compare and contrastcomplex relationshipsbetween terrestrial,freshwater and marineecosystems
    • Key Objectives: The student will:– Use a food web and energypyramids to analyze the flowof energy in ecosystems
    • Key Objectives: The student will:– Relate the role of humans in theecosystem
    • Key Terms Ecosystem Biotic factor Abiotic Factor Water Quality Limiting Factors Habitat Community Population Food Chain Food Web Predator – prey
    • Ecosystem An ecosystem is made up of livingorganisms which interact withothers in their own population, thecommunity and the non-livingparts of the community Can be large or small
    • Ecosystem
    • Biotic Factor All living things in an environment
    • Abiotic Factor All non-living and never livedthings in an environment They determine which organismsare able to live in the environment
    • Abiotic and Biotic Factors
    • Limiting Factors Factors that prevent thecontinuing growth and survival ofan organism
    • Limiting Factors
    • Water Quality How healthy or how good thewater is to support acommunity
    • Water Quality
    • Habitat The environment where a speciesexists
    • Habitat
    • Community All the living parts of anecosystem that live in the sameplace at the same time
    • Community
    • Population All individuals of one speciesliving together in a given area
    • Population
    • Food Chain The order in which energy travels– ProducersPlants– ConsumersHerbivores, Carnivore, Omnivores– Decomposers
    • Food Chain or… More simply put:– Algae makes food (glucose)– Tiny fish eats algae– Bigger fish eats tiny fish,– Bear eats fish
    • Food Chain
    • Food Web The intricate food web of foodchains that shows interactionsbetween many sources of foodfrom producer to the consumer
    • Food Web
    • Predator - Prey The relationship between whatanimals (the predator) do theeating and what animals areeaten (Prey)
    • Predator – Prey
    • Lab TimeNow it is time to introducethe new lab.Pease open your Green labguidesRead the introductionsilently as I read it aloud
    • Essential Learnings There are four levels oforganization within a Biome– An Ecosystem– A Community– A Population– An Organism
    • Essential Learnings Living things in the environmentare called Biotic Factors
    • Essential Learnings Nonliving features of theenvironment, such as waterquality/quantity, sunlight, rangeof temperature, soil composition,air quality, and water chemistryare called Abiotic Factors
    • Essential Learnings The number of different types oforganisms an ecosystem cansupport depends on biotic andabiotic factors
    • Essential Learnings Factors that prevent survival ofan organism are called LimitingFactors
    • Essential Learnings Limiting factors could include:– Lack of resources– Predation– Unsuitable climate– Disease
    • Essential Learnings Ecosystems are dynamic andchange over time
    • Essential Learnings Changes that effect organismscan be :– Daily– Seasonal– Long-term
    • Essential Learnings Large Scale events such asEutrophication (the addition ofexcess nutrients) or catastrophicevents like drought, flood or firealso change ecosystems
    • Essential Learnings Organisms have specificstructure, functions andbehaviors that enable them tosurvive in their ecosystem
    • Essential Learnings Populations of organisms arecategorized by the way theyobtain food in an ecosystem Plants and manymicrorganisms make their ownfood
    • Essential Learnings Anything that makes its ownfood is called a Producer
    • Essential Learnings Most everything else mustobtain food from anothersource. Consumers consume foodmade by producers
    • Essential Learnings There are three types ofconsumers– Herbivores – Plant eaters– Carnivores – Meat eaters– Omnivores – Meat and Planteaters
    • Essential Learnings There is a third member of thefood cycle that starts at the endof life These break down dead plantsand animals They are called decomposers