wetlands are a wonderland energy and food chains
TRANSCRIPT
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Wetlands Are a Wonderland
Energy and Food Chains
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Did you turn in?
• 1.1 Review (Intro to Environmental Science 10)• 1.2 Review (A living Planet 13)• 1.3 Review (Short History of Life on Earth 18)
• Biomes of the World (packet)• Biome Brochure
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Workbook
• Take out page 25• Wetlands are a Wonderland• Thinksheet
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Wetlands
• Transitional zones between land and water• Many different species • Swamps, marshes, bogs
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Swamp
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Marsh
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Bog
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Mangrove
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Soil
• Often saturated long enough to become anaerobic (no oxygen)
• Wetland vegetation must be able to tolerate both flooding and the lack of oxygen in the soil.
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Two Types of Wetlands
Inland and coastal. • Inland wetlands are freshwater ecosystems
and include marshes, swamps, riverine wetlands, and bogs.
• Coastal wetlands may be either fresh or salt water and are affected by tides.
• Examples include tidal salt marshes, tidal freshwater marshes, and mangroves.
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• http://www.youtube.com/watch?v=ft_2nj96jLM
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Observation vs Inference
• Observation is the process of gathering information using the five senses (sight, smell, etc.).
• Inference is the ability to use observations to make informed decisions.
• For example, a group of students working on the Wetlands... inquiry observe that the red-tailed hawk is larger than most birds, has a hooked beak, and sharp claws.
• They infer that the hawk is a carnivore based on these observations and consequently place the hawk at the top of several food chains they are brainstorming in their group.
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Food Chains/webs
• A food chain shows the connections between individual organisms that depend on each other for energy.
• A food web shows all of the energy connections among living things within a community or ecosystem.
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Take out Page 25
• Wetlands Are Wonderlands• Thinksheet• Create 10 food chains
Producer – 1st consumer (herbivore) – 2nd consumer (carnivore) – 3rd consumer (omnivore)
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Producers
A2 smartweedA7 American sycamoreB3 cattailD2 phytoplankton: spyrogyra algae, euglena, diatom, volvoxG5 willow treesK3 red mapleK6 silver maple
Consumers
B5 red-winged blackbird C1D4 painted turtle C1E1 crayfish C1E2 zooplankton: copepod (left), nauplius larva (center), daphnia (right) C1F1 bluegill sunfish C2F3 wood duck C1F7 red shouldered hawk C3G2 carp C3
H1 small invertebrates: tubifex worm (left), chironomid larva (center), mosquito larva (right) C1H3 dragonfly C2H5 great blue heron C3J1 bullhead catfish C2J2 green frog C3K3 black rat snakeC2K4 raccoon C3
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