Investing in ecological portfolios: retaining migratory strategies of fish

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In finance, investors minimize risk and optimize long term returns by building stock portfolios with different attributes. This contingency strategy also occurs in ecological systems. We will use portfolio effects as a conceptual model to characterise the poorly known sub-population variations in migratory strategies of estuarine fish and their response to environmental conditions. In doing so, we will determine how environmental change drives variations in migratory strategies, impacts long-term growth and population trophic web dynamics. Outcomes will foster novel and dynamic management frameworks that enhance population stability despite the predicted volatility of environmental conditions.