Pond Study Hypothesis Questions Is the pond in Media a healthy ecosystem? How do you know?
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Transcript of Pond Study Hypothesis Questions Is the pond in Media a healthy ecosystem? How do you know?
![Page 1: Pond Study Hypothesis Questions Is the pond in Media a healthy ecosystem? How do you know?](https://reader035.fdocuments.us/reader035/viewer/2022062309/56649cd55503460f9499cc2b/html5/thumbnails/1.jpg)
Pond Study Hypothesis Questions
• Is the pond in Media a healthy ecosystem?
• How do you know?
![Page 2: Pond Study Hypothesis Questions Is the pond in Media a healthy ecosystem? How do you know?](https://reader035.fdocuments.us/reader035/viewer/2022062309/56649cd55503460f9499cc2b/html5/thumbnails/2.jpg)
Healthy Ecosystems
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Features of healthy ecosystems
• Biodiversity
• Index species
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Biodiversity
• The variety of plant and animal species in an ecosystem
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Biodiversity and ecosystems
• The greater the biodiversity, the more stable the ecosystem will be
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Index species
• A species whose presence tells if water is clean or polluted
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Common Pond Index species
• Mayflies:
clean water
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Common Pond Index Species
• Caddisfly larvae:
• Clean water
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Media Pond Index Species
• Scuds:
clean water
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Common Pond Index Species
• Tubifex worms:
• Pollution
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Niche review
• Decomposers
• Producers
• Consumers–Herbivores
–Predators
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Consumers in the pond
• Collectors–Gatherers: feed on the
bottom–Filter feeders: filter small particles out of the water
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Consumers in the pond
• Scrapers: graze on algae that is attached to rocks
• Shredders: break dead plants into smaller pieces
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Consumers in the pond
• Predators–Grab and eat other animals
●Parasites
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Pond organism sketches
• View with the dissecting microscope
• Draw your specimens -4 minimum
• Label each with the name of the organism, habitat (where you found it), niche, and feeding adaptation
• Each person makes drawings!
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Work with your field trip group
• To identify your specimens, use the packets and our class website for help
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Discussion questions
• How many different organisms did you see?
• Does the pond show biodiversity?
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Food Web Analysis
Keystone species: keeps ecosystemIn balance
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Food Web Analysis
Keystone Species