Using IUCN Red List of Threatened Species (2016v2) data, I calculate an expected extinction rate for the coming century that is 759 to 7,582 times the natural background rate. Extinction rates exceed the planetary boundary formulated by Rockström et al. (2009) nearly everywhere (521 out of 538...

This provides a short overview of the main themes of ecological economics (EE). It isargued that EE provides a platform that fosters multidisciplinary environmental research bybringing together the core contributing disciplines economics and ecology. In addition, EE isregarded as a pluralistic...

Optimal harvesting of prey in a predator–prey ecosystem is studied under the condition that the existence of the predator has value. Predators (birds) and humans (fishers) compete for prey (shellfish). The behavior of the system is studied and conditions for optimal control are deduced....