Part 1 of Essay
Natural Resources Management Predators have an everlasting effect on different kinds of ecosystems. They influence there ecosystems by controlling the abundance of lower species certain habitats. In this article, “Predators and Ecosystem Management” by (James A. Estes). He explains results of case studies that indicate ....

Part 2 of Essay
.... of the sea otters coastal system it was possible to gain much insight into the sea otter ecological role in kelp-forest ecosystem. Over the years it's been possible for us to observe the kelp-forest ecosystem over-time, thanks to the massive growth of the sea otters population we observed the change from otter- free to otter-dominated. This article relates to many aspects of our textbook. On page 89 in chapter 5 the text explains what an ecosystem is, defined by the book, it's a community of species intera ....