Classification: Vertebrates Invertebrates Herbs Trees & Shrubs Data Collection: Creek Bottom Dissolved Oxygen Creek Depth Creek Clean Up Invert Sampling Nitrates pH Microorganisms Phosphates Vert Sampling Temp & Humidity Turbidity

Microorganisms The number and type of microorganisms can indicate level of water quality in the creek as well as biotic potential of the creek habitat. An abundance of phyto plankton can cause increased turbidity and decreased light penetration. It may also indicate a major shift in certain abiotic factors such as increased water temperature, increased nitrates, or increased phosphates. Water samples are collected periodically from the study site using a plankton net. Samples are taken back to the classroom and analyzed for number and types of microorganisms. Return To Creek Data Home Page