Eutrophication of Truesdale Lake By: Christian Jenne SUNY Oneonta - - PowerPoint PPT Presentation

Eutrophication of Truesdale Lake

By: Christian Jenne SUNY Oneonta Biological Field Station

Photo 1

Background

• Hometown:

Dryden, New York

• Undergraduate:

SUNY ESF

• Graduate:

SUNY Oneonta

• Work Experience:

USFWS Peconic Dunes Summer Camp

Truesdale Lake

dec.ny.gov

Oligotrophic Lake

• Lower levels of nutrients

<10 µg/L of phosphorus

• Low biological productivity

<2 µg/L of Cholorophyll a

• High water clarity

>5 meter Secchi Disk Depth

Mesotrophic Lake

• Moderate level of nutrients

10-20 µg/L of phosphorus

• Moderately productive

2-8 µg/L of Cholorphyll a

• Moderate levels of water

clarity 2-5 meter Secchi Disk Depth

Eutrophic Lake

• Higher level of nutrients

>20 µg/L of phosphorus

• 56 µg/L of phosphorus
• High levels of biological

productivity >8 µg/L of Chlorophyll a

• 41.81 µg/L of Chlorophyll a
• Low water clarity

2 m Secchi Disk Depth

• 1 m Secchi Disk Depth

Results of High Phosphorus

• Algal Blooms
• Increased Aquatic Vegetation

Potamogeton crispus Potamogeton foliosus

Photo 2 Photo 3

Phosphorus from Watershed

• Old Septic Systems
• Phosphorus from lawns or

gardens

• Non-permeable surfaces

http://www.wellwaterguide.net/septic-tanks

Phosphorus From Within

• Internal Loading
• Due to anoxic bottom

water

• Bound phosphorus is

released

• Available for organisms

in the water column

P P P P

Lake

O2

O2

Low O2 in bottom H2O

P P P P P

Techniques for Change

Quick and Simple

Rain barrels Rain Gardens Buffer Zones Education

Long Term

Septic Tank Check Ups Septic Tank Repairs Combined Septic Systems Aeration System

Watershed Community

• Results will not happen overnight
• Solutions must be community

based

• Regulate Laws/Policies
• Continue using multiple techniques
• Be able to adapt

Photo 4

SURVEY!!

Questions?

Photo 5

References

Photo Credits:

Photos 1, 4 and 5 Rob Cummings of TEA Photo 2 Google Earth Photo 3 Lara Gorton of TLPOA

Herbicides and Algaecides

• Copper Sulfate/GreenClean Pro
• Aquathol K
• Sonar AS