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Environmental Studies Mr. Skirbst Science Topic 28
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Surveying Goal of the surveying team is to determine the stream gradient
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Surveying Goal of the surveying team is to determine the stream gradient Stream gradient: stream slope
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Surveying Stream slope = rise / run
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Surveying Stream slope = rise / run In the field: rise = (determined by surveying)
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Surveying Stream slope = rise / run In the field: rise = (determined by surveying) run = (calculated using the Pythagorean Theory)
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Surveying Surveying: Using instruments to make measurements of the land
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Surveying Terms
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Surveying Data Table:
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Bench Mark (BM) Transit Stream Slope Line of site Cross hairs Rod
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Bench Mark (BM) Transit Cross hairs BB D
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Bench Mark (BM) Transit Cross hairs BB D
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Cross hairs BB D Rise Run Stream
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BB D Rise Run Stream
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Rise Run Stream Rise Run
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Rise Run Stream (Stream) 2 = (Rise) 2 + (Run) 2 Pythagorean Theory
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Stream Team
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Goal of the stream team is to determine the stream discharge
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Stream Team Goal of the stream team is to determine the stream discharge Stream discharge- water volume released in a period of time
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Q (discharge)
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Stream Team Volume =
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Stream Team Volume = width x height x length ( 3 dimensions)
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Stream Team Volume = ( width x height) x length Discharge (Q) = area x velocity (cubic feet per second)
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Stream Team Stream width –
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Stream Team Stream width – Distance from bank to bank at the cross-section
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Stream Width
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Stream Team Stream depth–
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Stream Team Stream depth– average depth along the cross-section
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Stream Team Stream depth– average depth along the cross-section (must be average since depth is not uniform)
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Stream Team Average depth determined by taking depths at regular intervals and dividing by number of intervals
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Stream Depth
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Stream Team Stream area = width x depth (2 dimensions) (feet 2 )
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Stream Team Stream length –
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Stream Team Stream length = stream speed
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Stream Speed
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Stream Team Stream length = stream speed Speed (velocity) = distance/time
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Distance
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Time
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Distance Time
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Stream Team Stream length = stream speed Speed (velocity) = distance/time (feet/second)
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Stream Team Discharge (Q) = area x velocity
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Stream Team Discharge (Q) = area x velocity units = cubic feet per second (ft 3 /sec)
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Tree Team
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The goal of the tree team is to calculate the % canopy cover, measure the tree density, and identify species of trees. Tree Team
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http://www.arborday.org/trees/whatTree/whatTree.cfm?ItemID=E6A
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Soil Team
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The goal of the soil team is to analyze the texture, chemistry, and biology of the soil. Soil Team
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Soil texture - Soil Team
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Soil texture – how the soil feels Soil Team
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Soil texture – the composition of soil in terms of the relative amounts of clay, silt, sand, and gravel. Soil Team
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1.Clay – < 0.002 mm 2.Silt – 3.Sand – 4.Gravel – Soil Team
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1.Clay – 2.Silt – 0.002 mm to 0.05 mm 3.Sand – 4.Gravel – Soil Team
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1.Clay – 2.Silt – 3.Sand – 0.05 mm to 2.0 mm 4.Gravel – Soil Team
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1.Clay – 2.Silt – 3.Sand – 4.Gravel – > 2.0 mm Soil Team
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Method for determining texture Soil Team
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Method for determining texture Settling Rate: Soil Team
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Method for determining texture Settling Rate: Larger particles settle first, followed by smaller particles Soil Team
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Method for determining texture Soil Sieve: Soil Team
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Method for determining texture Soil Sieve: Passing soil sample through a series of sieves to separate particle sizes Soil Team
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Soil Biology: Extracting the organisms in the soil for observation Soil Team
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Soil Biology: Extracting the organisms in the soil for observation Macroinvertebrates – big bugs Soil Team
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Soil Biology: Extracting the organisms in the soil for observation Macroinvertebrates – big bugs Microinvertebrates –small bugs Soil Team
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Extraction of organisms: Berleese funnel Soil Team
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Soil Chemistry: Analyzing the soil nutrients that support plant life Soil Team
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Soil Chemistry: Analyzing the soil nutrients that support plant life N P K Soil Team
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The goal of the water team is to determine the biological health of the stream. Water Team
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Sample locations: Water Team
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Sample locations: A, B, C, D (work FROM downstream TO upstream!) Water Team
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Sample technique: Water Team
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Sample technique: Kick net – kick up sediment in 2ft 2 area downstream of net Water Team
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Sample technique: Kick net – kick up sediment in 2ft 2 area downstream of net Catch net – hand net Water Team
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Benthic macroinvertebrates: bottom big bugs Water Team
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Pollution Tolerance Index (PTI): Water Team
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Pollution Tolerance Index (PTI): A measure of how tolerant the benthic macroinvertebrates are to pollution. Water Team
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Pollution Tolerance Index (PTI): A measure of how tolerant the benthic macroinvertebrates are to pollution. Value 1 -4 (1 = very health 4 = not healthy) Water Team
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Reporter – work with others in team to interview everyone Support Team
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Reporter – work with others in team to interview everyone Photographer – take pictures of everyone doing their job Support Team
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Reporter – work with others in team to interview everyone Photographer – take pictures of everyone doing their job Videographer – video everyone doing & explaining their job Support Team
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Job Application
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