Implications of life history uncertainty when evaluating status in the Northwest Atlantic population of white shark (Carcharodon carcharias) ...

• Main Authors: Bowlby, Heather, Gibson, Jamie
• Format: Dataset
• Language: English
• Published: Dryad 2020
• Subjects: Carcharodon carcharias; population decline; species conservation; Northwest Atlantic
• Online Access: https://dx.doi.org/10.5061/dryad.vhhmgqnqk; https://datadryad.org/stash/dataset/doi:10.5061/dryad.vhhmgqnqk

To effectively protect at-risk sharks, resource managers and conservation practitioners must have a good understanding of how fisheries removals contribute to changes in abundance and how regulatory restrictions may impact a population trajectory. This means they need to know the number of animals being removed from a population and whether a given number of removals will lead to population increases or declines. For white shark (Carcharodon carcharias), theoretical quantities like the intrinsic rate of population increase or rebound potential (ability to increase in size following decline) are difficult to conceptualize in terms of real-world abundance changes, which limits our ability to answer practical management questions. To address this shortfall, we designed a simulation model to evaluate how our understanding of longevity and life history variability of white shark affects our understanding of population trends in the Northwest Atlantic. Then, we quantified the magnitude of removals that could have ...