The wonders of ecology and ecosystems revealed.
A seminal moment in mankind's history occurred when in 1949 Aldo Leopold announced the concept of a land ethic: "We are all part of the greater interconnected whole of plants animals and microorganisms." Out of this pronouncement was born the new science of environmental studies. Since then, great strides have been made in understanding the web of life, and our dependence on the health of the environment we live in. Core Biology: Environmental Sciences is the story of the creation of this new biological discipline, which includes the study of ecosystems and the blossoming of the environmental system.
Segments in this program are:
1920 - Biomes
1928 - The Theory of Plant Succession
1949 - Ecology
1953 - Ecosystems
1957 - Ecology's Concept of Niche
1969 - The Five Kingdoms of Life
1979 - Gaia Hypothesis
1986 - Biodiversity
Educational Science DVD Extras: Instructor Guide, Blackline Master Quiz, Timeline and Photographs
Clip Length: 1 minute 42 seconds
"This video in the Core Biology series provides an excellent introduction to ecology from a historical perspective, highlighting the pioneers who established environmental science as a science in its own right. The program begins with a description of the characteristics of biomes and leads the viewer to an understanding of the concept of ecology and the interaction between plants and animals in an ecosystem. Providing many examples of these interactions and using diagrams of food webs and food chains, the narrator deals with energy input and how ecosystems run in opposition to the second law of thermodynamics. The concept of population ecology is introduced, and the terms "niche" and "habitat" are defined with clear examples. and the video shows how these concepts are interrelated. The laws that govern the interaction between populations in a particular habitat are also discussed. The program ends with a discussion of the Gaia hypothesis, which is used to explain the interactions between the biotic and abiotic components of ecosystems, the self-regulatory mechanisms of the planet that maintain its huge biodiversity, and the impact of human beings on that biodiversity."- American Association for the Advancement of Science