SLIDE 1
Ecology and Management of Headwater Streams Groundwater Steep and - - PowerPoint PPT Presentation
Ecology and Management of Headwater Streams Groundwater Steep and - - PowerPoint PPT Presentation
Ecology and Management of Headwater Streams Groundwater Steep and Narrow Channels High flow (spring and after rain) Base flow (early summer) No flow (late summer/fall) Mapped USGS Streams (1:24,000 scale) 19,553 Acres 21,405 Acres Mapped
SLIDE 2
SLIDE 3
Steep and Narrow Channels
SLIDE 4
High flow (spring and after rain)
SLIDE 5
Base flow (early summer)
SLIDE 6
No flow (late summer/fall)
SLIDE 7
Mapped USGS Streams (1:24,000 scale) 19,553 Acres 21,405 Acres
SLIDE 8
Mapped USGS Streams (1:24,000 scale) 19,553 Acres 21,405 Acres
SLIDE 9
Headwater Streams- small but mighty!
- Amphibians (17 species)
–Most common American Toad, Red- backed salamander, wood frog
- Macros (53 species)
–Most common black flies, mosquitoes, and midges, but also stone flies, mayflies, and cadis flies
SLIDE 10
Number of Brook Trout in 330ft of stream channel
# of fish
25 50 75 100 125 150
141 40
SLIDE 11
Length & Weight of Brook Trout
Length (inches)
2 4 6 8
Weight (lbs)
0.00 0.04 0.08 0.12
SLIDE 12
Length & Weight of Brook Trout
Length (inches)
2 4 6 8
Weight (lbs)
0.00 0.04 0.08 0.12
Average Fish: 3 in. and .01 lbs
SLIDE 13
Mapped USGS Streams (1:24,000 scale) Management of Headwater Streams
SLIDE 14
15 Acres 990 ft.
SLIDE 15
Manomet Headwater Experiment
- Treatments:
–No Buffer (3 streams) –38ft. Buffer (3 streams) –75ft. Buffer (3 streams) –No harvest (control)
- BMPs
–Filter strip (no scarification within 15ft of stream channel) –No unbridged/armored stream crossings
SLIDE 16
Sediment Plume
SLIDE 17
Natural Turbidity Changes
2001 2002 2003 2004 2005 2006 Turbidity (NTU) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
SLIDE 18
Natural Turbidity Changes
2001 2002 2003 2004 2005 2006 Turbidity (NTU) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
SLIDE 19
No Buffer vs. Control
2001 2002 2003 2004 2005 2006 Turbidity (NTU) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Harvest
SLIDE 20
No Buffer vs. Control
2001 2002 2003 2004 2005 2006 Turbidity (NTU) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Harvest
SLIDE 21
75ft Buffer vs. Control
2001 2002 2003 2004 2005 2006 Turbidity (NTU) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Harvest
SLIDE 22
75ft Buffer vs. Control
2001 2002 2003 2004 2005 2006 Turbidity (NTU) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Harvest
SLIDE 23
SLIDE 24
SLIDE 25
Headwater Streams are Sensitive to Increases in temperature due to their small volume Water Temperature
SLIDE 26
Maximum Daily Post-Harvest Temp Change - No Buffer
Distance from Forest (ft)
330 660 990
- T. change (oF)
- 5
5 10 15
SLIDE 27
Maximum Daily Post-Harvest Temp Change- No Buffer and 38ft. Buffer Distance from Forest (ft)
330 660 990
- T. change (oF)
- 5
5 10 15
SLIDE 28
Average Temperature- No Buffer
2001 2002 2003 2004 2005
Temperature (oF)
45 50 55 60 65
Harvest
Temp Changes: 3.8-6.2oF
SLIDE 29
2001 2002 2003 2004 2005
Temperature (oF)
45 50 55 60 65
Harvest
Average Temperature- No Buffer and 38ft. Buffer
3.8-6.2oF Temp Changes:
- 0.1-4.4oF
SLIDE 30
Temp Changes:
- 2.2-0.9oF
- 2.4-0.7oF
2001 2002 2003 2004 2005
Temperature (oF)
45 50 55 60 65
Average Temperature-
- 75ft. Buffer & Control
Harvest
SLIDE 31
2001 2002 2003 2004 2005
Temperature (oF)
45 50 55 60 65
Average Temperature- No Buffer, 38ft., 75ft., & Control
BT Threshold = 66oF (NH)
SLIDE 32
Management Recommendations
- Follow BMPs!!
–Prevent disturbance of soil near stream –Bridge or armor all stream crossings
- Avoid long area of unbuffered
streams
- Consider site specific conditions (e.g.
soils, aspect, Atlantic salmon)
SLIDE 33