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
Eutrophic Lake Mesotrophic Lake Oligotrophic Lake • Higher level of nutrients • Lower levels of nutrients • Moderate level of nutrients >20 µg/L of phosphorus <10 µg/L of phosphorus 10-20 µg/L of phosphorus • 56 µg/L of phosphorus • High levels of biological • Low biological productivity • Moderately productive productivity <2 µg/L of Cholorophyll a 2-8 µg/L of Cholorphyll a >8 µg/L of Chlorophyll a • 41.81 µg/L of Chlorophyll a • High water clarity • Moderate levels of water • Low water clarity >5 meter Secchi Disk clarity 2 m Secchi Disk Depth Depth 2-5 meter Secchi Disk • 1 m Secchi Disk Depth Depth http://www2.dnr.cornell.edu/cek7/nyfish/index.html dec.ny.gov
Results of High Phosphorus • Algal Blooms • Increased Aquatic Vegetation Photo 2 Potamogeton crispus Photo 3 Potamogeton foliosus
Phosphorus from Watershed • Old Septic Systems • Phosphorus from lawns or gardens • Non-permeable surfaces http://www.wellwaterguide.net/septic-tanks
P P P P Lake Phosphorus From Within • Internal Loading • Due to anoxic bottom water • Bound phosphorus is O 2 O 2 released • Available for organisms Low O 2 in bottom H 2 O in the water column P P P P P
Techniques for Change Quick and Simple Long Term � Rain barrels � Septic Tank Check Ups � Rain Gardens � Septic Tank Repairs � Buffer Zones � Combined Septic Systems � Education � Aeration System
Watershed Community Results will not happen overnight • Solutions must be community • based Regulate Laws/Policies • Continue using multiple techniques • Photo 4 Be able to adapt •
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
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