(par 3. 7.6) Study sheds light on mass beachings
Study sheds light on mass beachings http://www.iol.co.za/scitech/science/environment/study-sheds-light-on-mass-beachings-1.1488284 Auckland – Whales that beach themselves in large groups are not all members of the same family, a study has found, undermining long-held assumptions about the cause of mass strandings. An international team of scientists studied 12 mass strandings in Australia and New Zealand to examine the theory […]
(par 3. 5 ) Biomass and the availability of energy
Biomass & availability of energy http://www.marietta.edu/~biol/102/ecosystem.html Overview The main concepts we are trying to get across in this section concern how energy moves through an ecosystem. If you can understand this, you are in good shape, because then you have an idea of how ecosystems are balanced, how they may be affected by human activities, […]
(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 […]