BIO120H1 Chapter Notes - Chapter 20: Detritivore, Foregut, Thermoregulation
36
BIO120H1 Full Course Notes
Verified Note
36 documents
Document Summary
Lecture 16 chapter 20: consumption efficiency: the proportion of available energy that is consumed. Typically higher in aquatic ecosystems than in terrestrial ecosystems. Food ingested but not assimilated is lost as feces to the env, entering the pool of detritus. For ex, deer, camel, cattle have a modified foregut that contains bacteria and protists that increase the breakdown of cellulose-rich foods. Increase in herbivores, decrease in primary producers: omnivory in food webs may act to buffer the effects of trophic cascade. A terrestrial trophic cascade: lee dyer and deborah letourneau tested the effects of a potential trophic cascade on the production of piper cenocladum trees in the understory of a lowland wet tropical forest in. One group of insecticide treated plots with beetles. Comparisons of 2 or more food webs in which a predator or prey species is present in some but absent in the other may provide evidence for the relative importance of links.
