A computer simulation model for the yellow perch population in the Indiana waters of Lake Michigan

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dc.contributor.advisor McComish, Thomas S. (Thomas Sherman), 1938- en_US
dc.contributor.author Allen, Paul J. en_US
dc.coverage.spatial n-us-in en_US
dc.date.accessioned 2011-06-03T19:39:08Z
dc.date.available 2011-06-03T19:39:08Z
dc.date.created 2000 en_US
dc.date.issued 2000
dc.identifier LD2489.Z78 2000 .A455 en_US
dc.identifier.uri http://cardinalscholar.bsu.edu/handle/handle/186903
dc.description.abstract A computer simulation model was developed to examine the effects of various levels of alewife densities, harvest, and bycatch rates on yellow perch Perca flavescens relative densities in Indiana waters of Lake Michigan. The model utilized STELLA® Research software to develop the age-structured population model to include measured or predicted biological characteristics of density-dependent growth, recruitment, and mortality.The model was validated by simulating historically documented yellow perch catch per unit effort (CPUE) from 1984 - 1998. A strong linear relationship (R2= 0.70) between the model predicted CPUE values and the actual CPUE values was found. Twenty year model projections were performed using 1998 yellow perch trawl CPUE as starting values. Alewife abundance was established as either constantly high, constantly low, or allowed to fluctuate randomly and forecasts made used the average of 100 runs. Harvest was imposed on the yellow perch population at 20, 40, and 60% rate levels for fish >_ 200 mm coupled with bycatch at20, 40 and 60% rate levels for fish ranging from 165 - 200 mm.Alewife abundance was the major factor determining the relative abundance of the yellow perch population. On average, constantly high alewife abundance with no harvest or bycatch resulted in projected continuing suppression of yellow perch abundance from 1998 levels. The model predicted the population to rebound using constant low and random alewife abundance with no harvest or bycatch to approximately 1,100 fish/h and 700 fish/h, respectively.The model revealed harvest to have a generally negative impact on the yellow perch population. Increasing harvest and bycatch rate levels resulted in the suppression of projected increases in yellow perch relative abundance. Additionally, increasing harvest and bycatch rates resulted in greater predicted declines in yellow perch abundance.
dc.description.sponsorship Department of Biology
dc.format.extent x, 134 leaves : ill. ; 28 cm. en_US
dc.source Virtual Press en_US
dc.subject.lcsh Fish populations -- Indiana -- Computer simulation. en_US
dc.subject.lcsh Fish populations -- Michigan, Lake -- Computer simulation. en_US
dc.subject.lcsh Yellow perch -- Indiana -- La Porte County -- Statistics. en_US
dc.subject.lcsh Yellow perch -- Michigan, Lake -- Statistics. en_US
dc.title A computer simulation model for the yellow perch population in the Indiana waters of Lake Michigan en_US
dc.description.degree Thesis (M.S.)
dc.identifier.cardcat-url http://liblink.bsu.edu/catkey/1177967 en_US

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  • Master's Theses [5510]
    Master's theses submitted to the Graduate School by Ball State University master's degree candidates in partial fulfillment of degree requirements.

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