...Storm Over the Amazon | |
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The greatest powers of the physical environment slam into the resilient forces of life, and nothing much happens. For a very long time, 150 million years, the species within the rain forest evolved to absorb precisely this form and magnitude of violence." "They encoded the predictable occurrence of natures storms in the letters of their genes. Animals and plants have come to use heavy rains and floods routinely to time episodes in their life cycle. 157 ¶ 24 But diversity, the property that makes resilience possible, is vulnerable
to blows that are greater than natural perturbations. It can be eroded away
fragment by fragment, and irreversibly so if the abnormal stress is unrelieved. Eliminate a great many species and the local ecosystem starts to decay visibly....an eroding ecosystem 160, ¶ 35-36. "This is the assembly of life that took a billion years to evolve. It has eaten the storms -- folded them into its genes and created the world that created us. It holds the world steady." 160, ¶ 38.
Resiliency is an ecological value based on diversity of species and habitat stability. Creatures are adapted to the conditions of the place in which they are born, grow, mature and die by means of genetic variability, instinct, learned behavior, and fortune and may depend on one another. Ecological integrity is best described and understood as important in the tropical rain forest. The areas of the world where the diversity of life is most under threat from habitat loss, fragmentation of wildlife ranges and watershed, air pollution, population growth and deforestation are shown below on the world map in red, amber, and yellow.
Fritjof Capra | Charles Darwin | Paul Ehrlich | Garret Hardin | Richard Lewontin | Lynn Margulis | Ernst Mayr | Norman Myers | Ian Tattersal | Lewis Thomas |