A second year of a bermudagrass fertility study was conducted at the K-State Research and Experiment Station outside Columbus, KS, in 2021. The purpose to simulate forage producers’ practices managing determine how each practice affected production quality.

Body size is a key parameter influencing demographic characteristics of fish populations as well as market value of landed catch. Yet in bioeconomic modelling body size is often an overlooked biological and economic parameter. Here we evaluate how sizedependent pricing influences optimal harvest strategies in a model parameterized for two pelagic fisheries, those targeting Atlantic herring (Clu...

In this article, we study a fractional control problem that models the maximization of profit obtained by exploiting certain resource whose dynamics are governed logistic equation. Due to singularity problem, develop different resolution techniques, both for classical case and case. We perform several numerical simulations make comparison between cases.

We monitored 142 radiocollared adult (!1.0 yr old) white-tailed deer (Odocoileus virginianus) in 3 study areas of Massachusetts, USA, to estimate annual survival and mortality due to legal hunting. We then applied these rates to deer harvest information to estimate deer population trends over time, and compared these to trends derived solely from harvest data estimates. Estimated adult female s...