Adaptive Management Fisheries Management: Art & Science Science

Adaptive Management Fisheries Management: Art & Science  Science

Adaptive Management Fisheries Management: Art & Science Science Estimate parameters of the stock to be managed. Statistics and model based. Generally well-known. Art Forming management decision from science information and knowledge of stakeholders, society, etc. Incorporates a wide array of information. Incorporates uncertainty, precautionary principle. May be specific to situation. May rely on experience. Adaptive Management

3 What is Adaptive Management? Structured, iterative process of decision making Experimentation with management decisions Adaptive Management 4 Goals of Adaptive Management Primary (from Allen et al. (2011) & Walters (2007)) Reduce uncertainty over time What are four sources of uncertainty? Secondary Meet management objective(s)

Accrue information to inform future decisions Adaptive Management 5 Challenges to Adaptive Management What are five challenges to implementing AM according to Allen et al. (2011)? Adaptive Management 6 Challenges to Adaptive Management

What are three challenges to implementing AM according to Walters (2007)? Adaptive Management 7 Example: Black Bass and Walleye LN(CPUE)- annual mean +/- SE Bass >8 inches (statewide) LMB SMB LMB: R2=0.46, p=0.0006 SMB: R2=0.19, p=0.05

YOY Walleye (Ceded Territory) From Gretchen Hansen (UW) R2=0.28, p=0.01 Adaptive Management 8 Black Bass & Walleye: Complex & Uncertain Interactions ? Can we manage in such a way as to better understand these interactions? Exploitation

Shoreline development Macrophytes Other fishes Invasive species Stocking Lower water levels From Gretchen Hansen (UW) Warming temperatures Adaptive Management 9

Adaptive Management Process Identify uncertainties Form hypotheses Problem Identification Implemented as an experiment with controls, replication, etc. Goal Objective Information Base

Evaluation Actions Adaptive Management 10 Adaptive Management: Planning Objective Improve walleye fishing YOY walleye catch rate of >30/mile in 75% of lakes within 10 yrs Uncertainties Effects of largemouth bass (LMB) on walleye Role of harvest regulations in determining LMB abundance

Hypotheses LMB are causing declines in walleye reproduction Liberalized harvest regulations will decrease LMB population Action option Remove length and bag limits on LMB on SOME lakes Adaptive Management 11 Adaptive Management: Implementation 2013 2018 From Gretchen Hansen (UW)

Adaptive Management 12 Red Snapper Case Study Briefly explain this case study. What point was the author trying to make with it? Adaptive Management 13 Explain Adaptive Management

14 Adaptive Management Cycle 1. Definir Equipo inicial Alcance y visin Objetos de conservacin Contexto y actores claves 5. Compartir Lecciones

Productos formales Retroalimentacin y evaluacin Cultura de aprendizaje 2. Disear WWF Ciclo de Proyectos/ Programas de Conservacin 4. Analizar/Adaptar

Datos recolectados Resultados y supuestos Funciones operativas Planes de trabajo y presupuestos Plan de accin: objetivos, metas, y actividades Plan de monitoreo Plan operativo 3. Implementar Planes de trabajo y presupuestos Recaudacin de fondos

Capacitacin Alianzas Adaptive Management 15

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