Event Title

Fish Abundance and Biomass Across Four Sampling Locations in Mirror Lake, North Woodstock NH

Faculty Sponsor(s)

Kerry Yurewicz

Abstract

Mirror Lake is an oligotrophic lake located in North Woodstock, New Hampshire. Currently managed by NH Fish and Game as a trout fishery, there have also been introductions of other game fish species in the past. The last comprehensive study of Mirror Lake was published in 1985, so the recent state of the fishery was unknown. More importantly, it is unclear whether the current fishery is ecologically sustainable with regards to the habitat and resources within this lake. We gathered data on fish demographics throughout May of 2019 by using fyke nets in four different locations within Mirror Lake. Length and weight were recorded for each fish caught, and the data were analyzed to test for differences in fish abundance, body size, and biomass between net locations. Preliminary results show significant differences in Yellow Perch mean length and total biomass between net locations. We will also examine habitat complexity at each net location, to provide insight into the differences observed between these sites. The findings from this project help reveal the current state of the fishery in Mirror Lake, and highlights environmental characteristics that contribute to the distribution of individual fish species.

Location

Hartman Union Building Courtroom

Start Date

5-2-2019 2:00 PM

End Date

5-2-2019 3:00 PM

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May 2nd, 2:00 PM May 2nd, 3:00 PM

Fish Abundance and Biomass Across Four Sampling Locations in Mirror Lake, North Woodstock NH

Hartman Union Building Courtroom

Mirror Lake is an oligotrophic lake located in North Woodstock, New Hampshire. Currently managed by NH Fish and Game as a trout fishery, there have also been introductions of other game fish species in the past. The last comprehensive study of Mirror Lake was published in 1985, so the recent state of the fishery was unknown. More importantly, it is unclear whether the current fishery is ecologically sustainable with regards to the habitat and resources within this lake. We gathered data on fish demographics throughout May of 2019 by using fyke nets in four different locations within Mirror Lake. Length and weight were recorded for each fish caught, and the data were analyzed to test for differences in fish abundance, body size, and biomass between net locations. Preliminary results show significant differences in Yellow Perch mean length and total biomass between net locations. We will also examine habitat complexity at each net location, to provide insight into the differences observed between these sites. The findings from this project help reveal the current state of the fishery in Mirror Lake, and highlights environmental characteristics that contribute to the distribution of individual fish species.