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Thesis by Erin Spencer Advisor: Theodore Willis

FACTORS CONTROLLING ALEWIFE ( Alosa psuedoharengus ) POPULATION ABUNDANCE AMONG FOUR RIVERS IN MID-COAST MAINE. Thesis by Erin Spencer Advisor: Theodore Willis. Sources I. Sources II. Many people helped gather historical data, including: Tom Squires , DMR

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Thesis by Erin Spencer Advisor: Theodore Willis

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  1. FACTORS CONTROLLING ALEWIFE (Alosapsuedoharengus) POPULATIONABUNDANCE AMONG FOUR RIVERS IN MID-COAST MAINE Thesis by Erin Spencer Advisor: Theodore Willis

  2. Sources I

  3. Sources II • Many people helped gather historical data, including: • Tom Squires, DMR • Elaine Smith and Richard Hollinger of Special Collections in the Fogler Library, Orono • Warren Fish manager Ed Courtenay and the volunteers of the historic societies in Warren (Dick Ferren) • Nobleboro(Mary Sheldon) • Newcastle (George and Arlene Cole) • Orland (Ginny and Dave Davis) and the Waldoboro Town Office.

  4. Fishery Dependent Harvest Time Series Damariscotta 600 400 200 0 St George 600 400 Alewife landings (metric tons) 200 0 Orland 600 400 200 0 1865 1894 1923 1952 1981 2010 Year

  5. Are the time series coherent?

  6. Habitat vs. Harvest analysis

  7. River herring management milestones

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