Measuring Abiotic Factors. Each ecosystem has its own abiotic factors Different factors for… –...
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Transcript of Measuring Abiotic Factors. Each ecosystem has its own abiotic factors Different factors for… –...
![Page 1: Measuring Abiotic Factors. Each ecosystem has its own abiotic factors Different factors for… – Marine ecosystems – Freshwater ecosystems – Terrestrial.](https://reader035.fdocuments.net/reader035/viewer/2022062314/56649ed95503460f94be738e/html5/thumbnails/1.jpg)
Measuring Abiotic Measuring Abiotic FactorsFactors
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Each ecosystem has its own abiotic factors
Different factors for…– Marine ecosystems– Freshwater ecosystems– Terrestrial ecosystems
![Page 3: Measuring Abiotic Factors. Each ecosystem has its own abiotic factors Different factors for… – Marine ecosystems – Freshwater ecosystems – Terrestrial.](https://reader035.fdocuments.net/reader035/viewer/2022062314/56649ed95503460f94be738e/html5/thumbnails/3.jpg)
Marine Ecosystem abiotic factors
Salinity pH Temperature Dissolved oxygen Wave action
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Freshwater Abiotic Factors
Turbidity Flow velocity pH Temperature Dissolved oxygen
![Page 5: Measuring Abiotic Factors. Each ecosystem has its own abiotic factors Different factors for… – Marine ecosystems – Freshwater ecosystems – Terrestrial.](https://reader035.fdocuments.net/reader035/viewer/2022062314/56649ed95503460f94be738e/html5/thumbnails/5.jpg)
Terrestrial Abiotic Factors
Temperature Light intensity Wind speed Particle size Slope/aspect Soil moisture Drainage Mineral content
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How?
Most of these measurements are done with dataloggers.– Probe connected to a calculator that reads the
measurement
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pH
7 is neutral Values in freshwater range from slightly
basic to slightly acidic Seawater is usually above 7. Terrestrial: use a soil testing kit, match
color
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Wind
Determined by the beaufort scale Use an anemometer Hand held wind propeller
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Mineral Content
Weigh soil sample, Heat 500-1000C for several hours
– Allows volatile substances to escape
Whatever is left is the mineral content
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Flow Velocity
Time how long it takes a floating object to travel a particular distance.
Or use flowmeter
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Salinity
Determine the conductivity of a solution (higher salt is highly conductive)
Or by density of water (higher salt-more dense)
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Dissolved Oxygen
Electrodes Titration Dissolve tab
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Turbidity
Cloudy water has high turbidity
Turbidity affects the penetration of sunlight and therefore the rate of photosynthesis
Use a Secchi disc-lowered into the water until it is out of sight,
measure the scale of the line or pole.
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Let’s try it!