BIO 181 Lecture Notes - Lecture 9: Temperate Deciduous Forest, Tropical Rainforest, Continental Shelf
11 Nov 2016
School
Department
Course
Professor
Document Summary
Ecosystems-i: a system of multiple communities along with their chemical and physical environments, energy flow, transformers of energy, sunlight->chemical energy, chemical cycling, processors of matter, chemical elements->organisms. The four major players: abiotic environment, primary producers autotrophs, consumer. Eat the primary producers or other consumers: decomposers (detritivores) Decomposers: transfer chemical elements back to soil, water, air, prokaryotes and fungi, active at all trophic levels. Feeding relationships between organisms: food chain: transfer of food through trophic levels. One example of a food chain within this food web would be: phytoplankton krill baleen whales humans. It is used and converted by herbivores that eat the plants. Secondary production: assimilation the energy that is left after digesting food. The energy that is labeled as growth and cellular respiration : growth (new biomass) is considered the net secondary production. Production efficiency = (net secondary production)/(assimilation of primary production: in this case, 33/100 33% Rainforest is the most productive in terms of terrestrial energy.
