Selectivity, Pulse Fishing and Endogenous Lifespan in Beverton-Holt Models

Optimal management in a multi-cohort Beverton-Holt model with any number of age classes and imperfect selectivity is equivalent to finding the optimal fish lifespan by chosen fallow cycles. Optimal policy differs in two main ways from the optimal lifespan rule with perfect selectivity. First, weight gain is valued in terms of the whole population structure. Second, the cost of waiting is the interest rate adjusted for the increase in the pulse length. This point is especially relevant for assessing the role of selectivity. Imperfect selectivity reduces the optimal lifespan and the optimal pulse length. We illustrate our theoretical findings with a numerical example. Results obtained using global numerical methods select the optimal pulse length predicted by the optimal lifespan rule

Reframing Campus Climate Data to Advocate for Institutional Transformation, Praxis, and Activism for LGBQQ+ College Students

In this chapter, Hoffman and Pryor use SERU data to show how LGBQQ+ students perceive campus climate and propose ways scholars and practitioners might reframe these data to advocate for institutional transformation and imagine new ways of being for LGBQQ+ students. The authors use the traditionally heterogendered institution critical conceptual framework to show how a reliance on institutions as the solutions to LGBQQ+ students’ problems may, in fact, constrain ways of being for students and inadvertently uphold existing hierarchies of gender and sexuality. We advocate for scholars and practitioners to use campus climate data to push for institutional transformation, improve praxis, and create avenues for activism that extend beyond the walls of the institution