tues 4/16
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Tues 4/16. Collect Transpiration lab data (Day 1) Finish Ecological Succession booklets (15 min.) Start Chp.54 Ecosystems Notes Reminder: Chp.54 Guided Reading is due tomorrow!. Ecology Biomes and Ecosystems. Ecosystems- Matter and Energy. - PowerPoint PPT PresentationTRANSCRIPT
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Tues 4/16
• Collect Transpiration lab data (Day 1)• Finish Ecological Succession booklets
(15 min.)• Start Chp.54 Ecosystems Notes• Reminder: Chp.54 Guided Reading is due
tomorrow!
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EcologyBiomes and Ecosystems
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Ecosystems- Matter and Energy
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Primary Production = rate at which production happens
http://www.bigelow.org/foodweb/chemosynthesis.jpg
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Visualizing Matter & Energy
There are a variety of diagrams that help us visualize how energy, biomass, matter, and even number of organisms interact in a particular community or ecosystem. It is important that you look carefully at the diagrams and understand what it says about that ecosystem in terms of matter and/or energy.
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Primary Production made by Primary Producers
Gross primary productivity is the total amount of energy that producers convert to chemical energy in organic molecules per unit of time.
Then the plant must use some energy to supports its own processes with cellular respiration such as growth, opening and closing it’s stomata, etc.
What is left over in that same amount of time is net primary productivity which is the energy available to be used by another organism.
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Primary Production
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Net Product Pyramid
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Trophic Level Human Population
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• I think this slide should go up with the other pyramid slides even though it’s about populations
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Biomass Pyramids
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Pyramid of Numbers
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Energy Transformation
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Biogeochemical Cycle
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Nitrogen Cycle
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Phosphorus Cycle
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Water Cycle
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Carbon Cycle
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Nutrient Cycling
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21http://www.theenergylibrary.com/files/images/Energy_Allocation.screen.jpg
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Now that we have examined the flow of energy and the cycling of matter, let’s examine biomes from the biosphere.
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Aquatic Biome Distribution
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Lake Stratification
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Zonation
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Marine Zonation
Lake Zonation
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Freshwater
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Wetlands & Estuaries
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Transitional Zones between freshwater and marine. This water tends to be a mix of both depending on its geographic location. The water is often referred to as brackish
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Tide Zone
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Coral Reef
Benthos
Marine Biomes
Black Smoker
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Terrestrial Biomes
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Tropical Rain Forest
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Savanna
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Desert
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Chaparral- also called Scrubland
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Temperate Grasslands
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Temperate Forest
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Taiga
Also called Coniferous or Boreal Forest 1. precipitation usually snow 2. conifers like spruce, fir, hemlock3. soil acidic and forms slowly
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Tundra
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Biosphere
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What happens when a cycle is out of balance?
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Cycles can have an anthropogenic (man-made) or a non-anthropogenic (natural phenomena) impact that causes a cycle to become unbalanced. Additionally, this may just be the natural state of that ecosystem as a consequence of the availability of nutrients.Two examples involving imbalanced freshwater habitats include:
Oligotrophic waters- low primary productivityEutrophic waters- high primary productivity
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Eutrophic
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Oligotrophic Lake
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Eutrophication- The Algal Bloom
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Experimental Data
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The following data was collected from 14 different rivers in Virginia.
Use the Station 1 data to calculate the Primary Productivity of a water sample.
Report your answer in units of mg Carbon fixed/Liter
The needed conversion factors are found on the student formula sheet
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Answers to Previous Slides
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Station 1
4.2 mg O2/L 0.698 = 2.9 mL O2/L
2.9 mL O2/L 0.526= 1.6 mg Carbon fixed/L
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Created by:
Susan RamseyVASSNotable contributions by S. Meister