Hiroshi Okamura

The paper evaluates the long-term population and habitat dynamics of proboscis monkeys in the Lower Kinabatangan, showing a population increase and habitat stability despite habitat conversion outside protected areas.

The paper introduces a bent hockey-stick stock-recruitment function with a differentiable breakpoint and a new algorithm for estimating MSY under stochasticity, improving fisheries management.

This study evaluates the robustness of MSY reference points derived from the hockey-stick stock-recruitment model under structural uncertainty and shows that combining them with precautionary measures can achieve comparable management outcomes to true models.