Slide 1

Identify if Creeks are nutrient limited

Nutrient concentrations control stream food web productivity

Historically

Determine whether Nitrogen and/or Phosphorus limits autotrophic and/or heterotrophic biofilms

Design and Data collection

Slide 7

Study Area

Discharge

Discharge

Canopy coverage

Leaf Litter

Streams had more algal biomass in the summer compared to the fall

Iron Creek

Hovey Creek

Limitation is co-limited by nitrogen and phosphorous

Acknowledgments

Ambrose H.E., Wilzbach M.A. & Cummins K.W. 2004. Periphyton response to increased light and salmon carcass introduction in northern California streams. Journal of the North American Benthological Society 23:701–712.

Slide 19