1. Heath Korell Jenna Davis Nick Porter Sean Taylor
Assessment of macrophytes and sediment depth accumulation at OX Ranch
Heath Korell
Jenna Davis
Nick Porter
Sean Taylor

2. Outline Rationale and study area Methods Results from data
Recommendations for macrophyte control

3. Rationale Severe overgrowth of macrophyte species
Natural Eutrophication
Could lead anoxic conditions
Potential for fish kill

6. Methods Sediment Sampling K-B Corer Analyzed
Creates a vacuum for the sediment
Analyzed
Biomass
Wet weight
Dry weight
Ash weight

7. Methods Macrophyte Sampling Large Macrophyte Sampler Analyzed
Phosphorous Analysis
Biomass
Wet weight
Dry weight
Ash weight

8. Types of Macrophytes we gathered
Oaks Pondweed
Coontail

9. Milfoil
Duckweed

10. Site 1 core results
In this graph I have depth in cm on the y axis, starting at 0 at the water sediment interface. On the X-axis I have % of organic matter in each strata.
On the right figure I have depth of sediment starting at the water sediment interface in cm on the y and % water content on the x axis.
As you can see the % organic matter more than doubles going from 7 cm with 2.99% to 6.85% at a depth of 9 cm. I believe that this is due to the declining % of water content in these strata, and getting closer to the clay base of the lake.

11. Site 2 core results
In this graph I have depth in cm on the y axis, starting at 0 at the water sediment interface. On the X-axis I have % of organic matter in each strata.
As can be seen in this graph the % organic matter starts to increase right away and I believe that this is because of the increase input of phosphorus due to running through a cattle pasture.
On the right figure I have depth of sediment starting at the water sediment interface in cm on the y, and % water content on the x axis.
The decrease of % water content is due to getting closer to the clay base of the lake with depth.

12. Site 3 core results
In this graph I have depth in cm on the y axis, starting at 0 at the water sediment interface. On the X-axis I have % of organic matter in each strata.
As can be seen in this graph the % organic matter increases at a fairly steady rate until five cm, I believe that this is due to water flowing through the pond and collecting near the outlet so the organic matter is evenly mixed then due to other layers building up on pervious layers gets denser and a higher % of organic matter. then between 6 and 9 cm it stabilizes around 2%
On the right figure I have depth of sediment starting at the water sediment interface in cm on the y, and % water content on the x axis.
The decrease of % water content is due to getting closer to the clay base of the lake with depth.

13. Total phosphorous in pond 3
In this figure I have the total phosphorous measured in micrograms per liter on the y axis and 5 different sites on the x axis.
As seen in site two there is a large increase in the Total phosphorus this is most likely due to the input due to the inlet from the cattle pasture at site 2.
Excluding the 2nd site going up through different sites, there was a steady increase of TP. With site 5 being the highest I think this is due to the density of
One explanation that may explain the high phosphorus content at site 5 could be due to the input of littoral vegetation and bioaccumulation of phosphorus.

14. Biomass

15. Implications/Recommendations
Raking
Create macrophyte channels for habitat
(Olson et. al, 1998)
$495.00
5 ft. Wide

16. 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

17. Summary Core lengths and Macrophyte samples were collect
Analysis of core composition and phosphorus
Macrophyte genera and their biomass
Management Implications