Field and Lab Research in Environmental Science

1. Field and Lab Research in Environmental Science Garnet Abrams Faculty Advisor: Dr. Eileen Zerba Princeton Environmental Institute Summer 2010

2. Carnegie Lake • Nutrients – Nitrogen and Phosphorous • YSI – Temperature, pH, salinity, turbidity, dissolved O2, chlorophyll, and blue-green algae • Primary inputs – Stony Brook and Millstone River • Smaller inputs – Elm Stream, Washington Stream, storm drain networks

3. Elm Stream • Dillon pool filters backwashed into Elm Stream and Lake Carnegie • Chlorine tolerance of different species • Installation of UV filtration system will reduce chlorine concentrations in backwash

4. Washington Stream • Construction of new chemistry and neuroscience buildings alters nutrient levels and turbidity • Urban watershed results in quick and high flood peaks. Also increases pollution stored in and on the ground that is concentrated in initial rain events

5. Restoration Goals • Primary objective to redirect the stream from undercutting Washington Road • Secondary to build a healthier environment that will be better able to filter pollutants and recycle the high nutrients into the ecosystems instead of concentrating in Lake Carnegie • Adding meanders lengthens stream and slows current • Diversifying ecology • Altering streambed to incorporate more step-pools

6. Current Geomorphology Blue – bedrock Green – boulders Yellow – mixed large gravel and boulders Orange – mixed sand and large gravel Red Lines - Undercutting • Current streambed is unstable in a state of transition and reconfiguring its floodplain • Upper narrow, steep, and straight run extreme focus of restoration

7. University Efforts to Reduce Pollution in the Local Watershed