Event Title

Population Estimates and Demographics of Mirror Lake Fish Species

Presenter Information

Gabriel Winant, M.S. Biology

Faculty Sponsor(s)

Kerry Yurewicz

Abstract

Through state sanctioned stocking and illegal fish dumping, Mirror Lake (North Woodstock, NH) has been subjected to many species’ introductions. In the early 1900’s the lake was home to 3 species native to New Hampshire; currently there are 9 different fish species found in the lake. It was previously unknown how this increase in diversity effected the health and recreational value of the fish populations present. This study investigated the current population sizes and health of fish species within Mirror Lake during 2018. Fyke nets were used to conduct a mark-recapture survey in addition to collecting length, weight, and age data on the fish. Population estimates and size distributions revealed large populations of Yellow perch and Pumpkinseed sunfish with very few fish reaching quality sizes. There appears to be very few Smallmouth bass in the lake, which is a popular gamefish species that has had healthy and sustainable populations in historical studies of the lake. Decreasing populations of bass and stunted panfish populations, negatively impact the overall recreational value of Mirror Lake. The data collected in this study can be used to make future fisheries management decisions with the goal of managing Mirror Lake sustainably and increasing it’s recreational value.

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

Population Estimates and Demographics of Mirror Lake Fish Species

Hartman Union Building Courtroom

Through state sanctioned stocking and illegal fish dumping, Mirror Lake (North Woodstock, NH) has been subjected to many species’ introductions. In the early 1900’s the lake was home to 3 species native to New Hampshire; currently there are 9 different fish species found in the lake. It was previously unknown how this increase in diversity effected the health and recreational value of the fish populations present. This study investigated the current population sizes and health of fish species within Mirror Lake during 2018. Fyke nets were used to conduct a mark-recapture survey in addition to collecting length, weight, and age data on the fish. Population estimates and size distributions revealed large populations of Yellow perch and Pumpkinseed sunfish with very few fish reaching quality sizes. There appears to be very few Smallmouth bass in the lake, which is a popular gamefish species that has had healthy and sustainable populations in historical studies of the lake. Decreasing populations of bass and stunted panfish populations, negatively impact the overall recreational value of Mirror Lake. The data collected in this study can be used to make future fisheries management decisions with the goal of managing Mirror Lake sustainably and increasing it’s recreational value.