Notes
Slide Show
Outline
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"Problem"
  • Problem
  • Event
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Issue
  • To what extent have the human induced changes impacted the natural succession process in Harford Glen?
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Players and their Beliefs
  • Mr. Burley (teacher at Harford Glen):
  • Since we have already disturbed the natural succession in the wetlands, Mr. Burley feels that there should be a management plan, also concerning the pine forest.
  • Mrs. Murray (neighbor of Harford Glen):
  • As a citizen, Mrs. Murray  doesn’t understand why we are trying to kill the plant.
  •  She thinks they attract butterflies and they are very pretty.
  • She think there should be more of this plant because of how pretty it is.
  • Dr. Baker-Brosh (Ecologist):
  • Non-Native plants are bad because they take the place of Native plants
  • Harford Glen could be doing a better job at getting rid of Non-Natives, but it would take a lot of volunteers and time.
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"Original Research Question"
  • Original Research Question:
  • To what extent are the wetland plants in Harford Glen obligate, facultative or upland  (Native or Non-native)?
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Purple Loosestrife
(Lythrum Salicaria )
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Purple Loosestrife
  • - up to 10 feet tall
  • -native to Eurasia
  • -capable of replacing native vegetation in a number of wetland environments
  • -30-50 stems arising from one rootstock
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Purple Loosestrife Distribution
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Mile-a-Minute
(Polygonum Perfoliatum)
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 Mile-a-Minute
  • -known as Devil’s tear-thumb
  • - stems are reddish and “armed” with downward pointing barbs
  • -Native to India and Eastern Asia


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Polygonum Perfoliatum Distribution
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Data Collection Tool
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Procedure
  • Went out to the wetlands and distinguished our part of wetlands to study with our partners
  • Marked points with the Purple Loosestrife and/or Tear-thumb plants with our GPS units
  • Wrote the GPS points and plant species down in our notebooks
  • Analyzed our data


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Data
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The Distribution of Purple Loosestrife and Tear-thumb
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Computations
  • The Formula for finding % of the species is: Total plant area in square feet/total area in square feet= % of plant in the area.


  • Mile-a-Minute: 917 sq. ft./ 36154.8 sq. ft.= 2.54%


  • Loosestrife: 632 sq. ft./36154.8 sq. ft.= 1.89%


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"Thanks to Dr"
  • Thanks to Dr. Baker-Brosh for sharing your knowledge of Marsh plants and sloshing through the mud with us!


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