GPHY 102 Lecture Notes - Lecture 21: John Wiley & Sons, Biogeography, Moderate-Resolution Imaging Spectroradiometer

• School: Queen's University
• Department: Geography
• Course: GPHY 102
• Professor: Dr.Trezino

Document Summary

Science and systems of the human environment, 5th. Objectives (cid:149) understand energy and matter flows in ecosystems. (cid:149) examine ecosystem productivity. (cid:149) compare and contrast different biogeochemical cycles. Biogeography (cid:149) focuses on distribution of life on earth. (cid:149) identification and description of processes influencing patterns of distribution at varying scales (space and time) (cid:149) two major areas: Historical biogeography (cid:149) how spatial patterns arise over various scales of time and space (e. g. , evolution, migration, dispersal, extinction). Ecological biogeography (cid:149) how distribution is affected by physical and biological environments. A group of organisms and the environment with which they interact. Think of an ecosystem - what are its boundaries? (cid:149) scale independent and boundaries are therefore rather arbitrary. Energy loss in the food web (cid:149) food webs are energy flow systems: Eaten by consumers which use and store that energy (cid:149) when energy is transferred to next trophic level typically only 10% is used to build new biomass; rest is lost.