Figure 1. Handheld YSI probe with 4 sensors that measure
temperature, dissolved oxygen, pH, and
conductivity.
Photo. J. Hewitt
Figure 2. Another view of the YSI probe with computer and data storage.
Photo. J. Hewitt
Figure 3. Submerged
YSI sonde that measures water conditions
at scheduled intervals over a period
of time.
Photo. J. Hewitt
Advances in portable monitoring technology allow ecologists to observe levels of chemicals and nutrients that enter aquatic environments from storm water runoff, pesticide and fertilizer applications, and other point source contaminants (Barraud et al., 2002). State-of-the-art water monitoring equipment has advanced as sensor technology is designed into portable monitoring probes and sondes. Probes (Figure 1&2) are handheld devices use to sample surface water. Sondes (Figure 3) are submerged instruments that gather continuous data over time with the ability to transmit that stored information. Scouts will get an opportunity at summer camp to use these innovative technologies to collect water sample data. This data will be documented over time to monitor Black Creek conditions. It is important to monitor conditions because conserving the richest biodiversity of stream life requires cool water, increased dissolved oxygen, and minimal contaminants (Kaller & Kelso, 2007). Part of the lesson will discuss how the latest monitoring technologies use portable lab chip sensors that are easily calibrated in the field and are aiding ecologists in water conservation efforts (Jang et al., 2011).
References
Barraud, S.,
Gibert, J., Winiarski, T., & Krajewski, B. (2002). Implementation of a
monitoring system to measure impact of stormwater runoff infiltration. Water Science & Technology, 45(3):203-210.
Kaller, M. D.,
& Kelso, W. E. (2007). Association of macroinvertebrate assemblages with
dissolved oxygen concentration and wood surface area in selected subtropical
streams of the southeastern USA. Aquatic
Ecology, 41(1):95-110.
Jang, A., Zou,
Z., Lee, K. K., Ahn, C. H., & Bishop, P. L. (2011). State-of-the-art lab
chip sensors for environmental water monitoring. Measurement Science and Technology, 22(3):032001.