DIDSON video collection of Coastal Lake Erie Wetland, Lucas Co, Ohio in 2011

Publication Date

2020-04-30

Start Date

2011-03-24

End Date

2011-11-12

Eggleston, M.R., Milne, S.W., Ramsay, M., and Kowalski, K.P., 2020, DIDSON video collection of Coastal Lake Erie Wetland, Lucas Co, Ohio in 2011: U.S. Geological Survey data release, https://doi.org/10.5066/P9CMU62C.

Type: Related Primary Publication

Data were obtained in order to assess the movement of fish through a water control structure at Ottawa National Wildlife Refuge. The control structure is located between Pool 2B and Crane Creek (a tributary to Lake Erie.) Total counts produced by the semi-automated processes were compared to manual counts to determine accuracy. Accuracy, cost, time and effort, and other variables are important considerations when analyzing large data sets, especially non-numeric data sets such as video files that require initial processing prior to performing statistical analyses. Enumerating a complex mix of fish by manual counting of replayed echogram files is very difficult, requires training, and is time consuming. Partially automating the fish counting process could hold many benefits over manual counting. Specifically, a semi-automated process could remove tedious manual observation and has potential to reduce time, counter effort, and cost of DIDSON data file processing greatly (Boswell et al. 2008).

• Great Lakes Science Center (GLSC)
• USGS Data Release Products