Evaluation

Grid locations:

For evaluation purposes, fish were sampled (217 grids) at random locations in 3 investigated sites (4,7,10) of the Quinebaug River. Circles show grid locations in site 10. The catches were compared to probabilities of presence predicted for mesohabitats in grid locations.

Evaluation for all fish:

The number of adult fish significantly correlates with a sum of probabilities calculated for mesohabitat in the location. The scatter of data points is probably caused by natural variability and alteration of fauna.

Evaluation for fallfish:

On the species level, reliable results were achieved for fallfish. For other species the numbers of catches were too low.
The graph above shows highly significant relationship between the catches and predictions. The colors show the sites where fish were caught. Contrary to other sites, for site 4 all the fish were captured in areas of high probabilities. This site is one of least impacted and has the highest amount of area suitable for fallfish.