(par 3. 4.1) Types of food pyramids
The Flow of Energy in Ecosystems – Productivity, Food Chain, and Trophic Level As was explained in the last subchapter, the flow of energy is an essential feature of every ecosystem, since all living systems are open systems. They depend on a steady supply of energy in order to keep up the structural organization and […]
(par 9.5.2.2.2) Trophic Cascades across diverse plant ecosystems
Trophic Cascades Across Diverse Plant Ecosystems http://www.nature.com/scitable/knowledge/library/trophic-cascades-across-diverse-plant-ecosystems-80060347 By: Brian R. Silliman & Christine Angelini © 2012 Nature Education Citation: Silliman, B. R. & Angelini, C. (2012) Trophic Cascades Across Diverse Plant Ecosystems. Nature Education Knowledge 3(10):44 Trophic cascades are powerful indirect interactions that can control entire ecosystems. Trophic cascades occur when predators limit the density and/or behavior of their prey and thereby enhance survival of the next lower trophic level. What […]
(par 3. 1.1) Energy in Ecosystems (taken from Wikipedia)
Energy in Ecosystems http://en.wikibooks.org/wiki/Ecology/Energy_in_ecosystems An example of the concept of energy flow through trophic levels of a food chain. There are several different factors that control the primary productivity of energy and biomass flow. Energy flow is the amount of energy that moves through a food chain. The energy input, or energy that enters the […]