Eugene Odum pioneered the "new ecology" from a systems perspective, and wrote the world's first text book on ecology in 1953 (Fundamentals of Ecology) which was in its 5th edition in 2004.
The late Eugene Odum gives an accessible introduction to systems ecology. Recorded in 2000 at the Institute of Ecology, Georgia University.
Interviews conducted in March 2000 at the annual meeting of the American Institute of Biological Sciences on the topic of Challenges for the New Millennium. Museum of Natural History, Smithsonian Institution, Washington DC. See http://www.aibs.org/media-library/ for additional AIBS conference recordings.
by E P Odum
Agroecosystems are domesticated ecosystems that are many basic ways intermediates between natural ecosystems and fabricated ecosystems.
Differences: solar powered but auxiallary sources enhance productivity, diversity is greatly reduced in order to maximise yield of specific products, dominant plants and animals under artificial selection, control is external and goal orientated rather than internal via subsystem feedback, extensive dependence and impact on externals, autotrophic rather than heterotrophic, increased power density ratio.
Ecology per se will not solve probles (eg world food shortages) but the holistic and system-level approaches that underlie ecological theory can make a contribution to the integration of disciplines.
Traditionally, the land-owning farmer is an efficient controller since he is able to respond and adjust to local conditions and needs.
His goal is not only to make a living but also to pass on his farm to the next generation in as good or better shape. (also an internal controller since he operates within the farming system.
Unfortunately..control has passed to more distant controllers, absentee landlords, corporations, government, and especially the grain and food markets..
These remote controllers cannot respond effectively to the nurmerous positive and negative feedbacks that originate within the crop system itself.
Furthermore, the goal of the remote controllers is priamrily directed to obtaining the largest possible yield of a cash crop, not to maintaining long-term prodcutivity. Landholder