Heath Korell Jenna Davis Nick Porter Sean Taylor
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Transcript of Heath Korell Jenna Davis Nick Porter Sean Taylor
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Heath KorellJenna DavisNick PorterSean Taylor
Assessment of macrophytes and sediment depth accumulation at
OX Ranch
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Outline•Rationale and study area
•Methods
•Results from data
•Recommendations for macrophyte control
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Rationale•Severe overgrowth of macrophyte species
•Natural Eutrophication
•Could lead anoxic conditions
•Potential for fish kill
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Methods•Sediment
Sampling▫ K-B Corer
Creates a vacuum for the sediment
▫Analyzed Biomass
Wet weight Dry weight Ash weight
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MethodsMacrophyte Sampling
▫Large Macrophyte Sampler▫Analyzed
Phosphorous Analysis Biomass
Wet weight Dry weight Ash weight
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Types of Macrophytes we gathered
Coontail
Oaks Pondweed
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Duckweed
Milfoil
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Site 1 core results
1 2 3 4 5 6 7 80123456789
10
Site 1 core
% 0rganic matter
Dep
th (c
m)
32 34 36 38 40 42 44 460123456789
10
Site 1 core
% water content D
epth
(cm
)
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Site 2 core results2 3 4 5
0123456789
10
Site 2 core
% organic matter
Dep
th (c
m)
20 22 24 26 28 30 32 34 36 38 400123456789
10
Site 2 core
% water content
Dep
th (c
m)
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Site 3 core results0.8 1 1.2 1.4 1.6 1.8 2 2.2
0123456789
10
Site 3 core
% organic matter
Dep
th (c
m)
24 26 28 30 32 34 360123456789
10
Site 3 c...
% water content
Dep
th (c
m)
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Total phosphorous in pond 3
1 2 3 4 50
100
200
300
400
500
600
Site
Tota
l Pho
spho
rous
µg/
L
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Biomass
Myriophyllum Ceraphyllum Lemna Unidentifiable Potamogeton0
10
20
30
40
50
60
70
80
90
Species
Bio
mas
s (g
/m2)
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Implications/Recommendations•Raking
▫Create macrophyte channels for habitat (Olson et. al, 1998)
▫$495.00▫5 ft. Wide
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•Use a Biological Control▫Triploid Grass Carp
Herbivore•Cost
▫8-9 fish▫$10-$20/ fish▫Permit to import carp $23.50
•Carp must be certified triploid•Certified free of Asian Tapeworm
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Summary•Core lengths and Macrophyte samples
were collect
•Analysis of core composition and phosphorus
•Macrophyte genera and their biomass
•Management Implications