Measuring Abiotic Components 2u3a2l
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Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Abiotic factors of the Marine ecosystems Salinity = Amount of salt dissolved in water. Ranges from 10 – 35 ppt. Can use electrical conductivity, data logger, refractometer, or density measurements pH = Measure of how many H+ ions are in the water. Can be measured using pH paper, data logger, or pH meter. Temperature = measured with a conventional or electronic thermometer as well as data loggers. Marine organisms have an optimal temperature for metabolic processes, being ectothermic (cold blooded) water temp is very important.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Dissolved Oxygen= Necessary for respiration, is affected by temp. and wave action. Can be measured using data logger or Winkler Titration.
Wave Action = Increased wave action mixes more air with water to dissolve more oxygen. A dynamometer measures the force of the waves.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Abiotic factors of the Freshwater ecosystems Turbidity = Measures the clarity of water. The more clear the deeper sunlight can reach producers. Measured using a secchi disc. pH = Is greatly effected by the surrounding soil and rock as well as by rainfall. Like in the marine environment it’s the measure of how many H+ ions are in the water. Can be measured using pH paper, data logger, or pH meter. Flow velocity = can be measured using a floating object or a flow meter. Increase flow requires organisms to be able to anchor themselves well.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Temperature and Dissolved Oxygen = Colder waters can dissolve more oxygen. Dissolved Oxygen of 5 mg/L is necessary for a balanced ecosystem. The maximum D.O. at 15◦C is 9.8 mg/L.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Abiotic factors of the Terrestrial ecosystems Temperature = a maximum and minimum thermometer will tell you a range of temperature particularly in land where temp can vary greatly in a short amount of time.
Light intensity = Measured with a light meter and varies throught the day and according to cloud cover.
Soil moisture content = Soil mass is measured before and after applying low heat to dry the sample. The difference is the moisture content.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Wind Speed = measured with an anemometer Soil Particle Size = Measured with graduation sieves. Larger particles drain faster than smaller. Soil Mineral Content = Measured by taking the mass before and after burning all of the organic matter in the sample, this is called the (LOI) Loss On Ignition method. Indicates how well the soil holds water and its fertility.
Slope = influences runoff and the potential for erosion. Measured using leveling poles or a clinometer. Drainage = influenced by slope and soil content. Less drainage prevents oxygen and nutrients from being available to plants and take longer to warm up in the spring preventing germination.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Choosing and evaluating field techniques Reliability = the reliability of results can be increased by taking samples over multiple occasions and taking the average. Accuracy = accuracy can be increased by choosing equipment with a lesser degree of error. Appropriateness = a data logger would be a good choice for measuring light intensity over 24 hours.
Measuring biotic components of the system Students will be able to: -Describe and evaluate methods for estimating abundance of organisms. -Describe and evaluate methods for estimating the biomass or trophic levels in a community. -Define the term diversity. -Apply Simpson’s diversity index and outline its significance -Construct simple keys and use published keys for the identification of organisms.
Abiotic factors of the Marine ecosystems Salinity = Amount of salt dissolved in water. Ranges from 10 – 35 ppt. Can use electrical conductivity, data logger, refractometer, or density measurements pH = Measure of how many H+ ions are in the water. Can be measured using pH paper, data logger, or pH meter. Temperature = measured with a conventional or electronic thermometer as well as data loggers. Marine organisms have an optimal temperature for metabolic processes, being ectothermic (cold blooded) water temp is very important.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Dissolved Oxygen= Necessary for respiration, is affected by temp. and wave action. Can be measured using data logger or Winkler Titration.
Wave Action = Increased wave action mixes more air with water to dissolve more oxygen. A dynamometer measures the force of the waves.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Abiotic factors of the Freshwater ecosystems Turbidity = Measures the clarity of water. The more clear the deeper sunlight can reach producers. Measured using a secchi disc. pH = Is greatly effected by the surrounding soil and rock as well as by rainfall. Like in the marine environment it’s the measure of how many H+ ions are in the water. Can be measured using pH paper, data logger, or pH meter. Flow velocity = can be measured using a floating object or a flow meter. Increase flow requires organisms to be able to anchor themselves well.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Temperature and Dissolved Oxygen = Colder waters can dissolve more oxygen. Dissolved Oxygen of 5 mg/L is necessary for a balanced ecosystem. The maximum D.O. at 15◦C is 9.8 mg/L.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Abiotic factors of the Terrestrial ecosystems Temperature = a maximum and minimum thermometer will tell you a range of temperature particularly in land where temp can vary greatly in a short amount of time.
Light intensity = Measured with a light meter and varies throught the day and according to cloud cover.
Soil moisture content = Soil mass is measured before and after applying low heat to dry the sample. The difference is the moisture content.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Wind Speed = measured with an anemometer Soil Particle Size = Measured with graduation sieves. Larger particles drain faster than smaller. Soil Mineral Content = Measured by taking the mass before and after burning all of the organic matter in the sample, this is called the (LOI) Loss On Ignition method. Indicates how well the soil holds water and its fertility.
Slope = influences runoff and the potential for erosion. Measured using leveling poles or a clinometer. Drainage = influenced by slope and soil content. Less drainage prevents oxygen and nutrients from being available to plants and take longer to warm up in the spring preventing germination.
Measuring abiotic components of the system Students will be able to: -Describe and evaluate methods for measuring at least three abiotic factors within and ecosystem.
Choosing and evaluating field techniques Reliability = the reliability of results can be increased by taking samples over multiple occasions and taking the average. Accuracy = accuracy can be increased by choosing equipment with a lesser degree of error. Appropriateness = a data logger would be a good choice for measuring light intensity over 24 hours.
Measuring biotic components of the system Students will be able to: -Describe and evaluate methods for estimating abundance of organisms. -Describe and evaluate methods for estimating the biomass or trophic levels in a community. -Define the term diversity. -Apply Simpson’s diversity index and outline its significance -Construct simple keys and use published keys for the identification of organisms.
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