Uploaded on

A small Lake research project to determine what would grow if Eurasian water milfoil was not present.

A small Lake research project to determine what would grow if Eurasian water milfoil was not present.

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
315
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
1
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. Potential for Native Aquatic Plant Growth after Control of Eurasian Watermilfoil 2011 Crooked Lake Plot Study James A. Johnson, M.S. Lake Scientist Freshwater Scientific Services, LLC 2011 Crooked Lake Plot Study James A. Johnson, M.S. Lake Scientist Freshwater Scientific Services, LLC
  • 2.  
  • 3.  
  • 4.  
  • 5.  
  • 6.  
  • 7. Lake Use Water Quality Pollution From Land Aquatic Plants Nutrients Fish
  • 8.  
  • 9.  
  • 10.
    • 2011 Plot Study
    • Establish 6 study plots (early June)
    • Remove Eurasian milfoil from plots
    • Assess aquatic plant growth (late Aug)
  • 11.
    • Questions
    • What native plants will grow?
  • 12.
    • Questions
    • Will the abundance and diversity of native plants be sufficient to protect water clarity and provide fish habitat?
  • 13.
    • Questions
    • Will these native plants slow the reestablishment of Eurasian milfoil?
  • 14.  
  • 15.  
  • 16.  
  • 17.  
  • 18.  
  • 19.
    • Water Depth
    • Types of plants
    • Plant Height
    • % Coverage
  • 20.
    • Results
    • What types of plants
  • 21.
    • Results
    • What types of plants
    Coontail
  • 22.
    • Results
    • What types of plants
    Coontail Muskgrass
  • 23.
    • Results
    • What types of plants
    Coontail Muskgrass Illinois Pondweed
  • 24.
    • Results
    • What types of plants
    Coontail Muskgrass Illinois Pondweed Sago Pondweed
  • 25.
    • Results
    • What types of plants
    Coontail Muskgrass Illinois Pondweed Sago Pondweed Bushy Pondweed
  • 26. Results 2. How common was each type of plant? - % Occurrence 4 ÷ 9 = 44%
  • 27. Results - % Occurrence
  • 28. Results 2. How densely did each type of plant grow? % Cover Plant Height Water Depth Biovolume
  • 29. Results - % Cover
  • 30. Results - Plant Height
  • 31. Results - % Biovolume
  • 32.
    • Summary of Findings
    • Treatments reduced milfoil
    • Regrowth of milfoil fragments in untreated plots
    • Coontail and Muskgrass dominant - dense, persistent “carpet”
    • Taller plant species also fairly common - should provide quality habitat for fish
    • Natural recruitment likely
  • 33. Full Report Available for Download at…