Hi, I need assistance understanding the following questions:
Q1 - Choose one organism from the food web that fits into more than one trophic level and explain why and how this occurs.
Q2- The introduction of non native species to Florida, such as the Melaleuca tree and the Australian Pine, create a disruption of the natural environment. What happens when a new species is introduced? How is it controlled? Give an example of an introduced species to Florida.
Note: http://www.myfwc.com This is an excellent site for assistance and information.
1. When the diet of an organism varies, that organism can fill more than one trophic level. For example, omnivores such as grizzly bears eat both animals and plants. They will also, at times, eat each other. This phenomenon of consuming at more than one trophic level is brought about mainly due to the minimum energy needs of the organism in question. Each trophic level relates to the one below it by absorbing some of the energy it consumes. Thus, each subsequent trophic level will consume less energy than the previous trophic level, since the previous trophic level has already absorbed some of the existing energy. The efficiency with which this energy is passed on from one trophic level to the next is called the ecological efficiency. Consumers at each level convert, on average, about 10% of the chemical energy in their food to their own organic tissue (source: American Heritage Science Dictionary, 2005. Houghton Mifflin Company). For ...
The expert discusses the concepts in ecology.