In a previous experiment in Kenya, isolated megafauna animals like zebra, giraffe and elephant, and scientists observe how ecosystems react to the biggest reduction in species. This area is overwhelmed with rodents grass and shrubs increased and decreased level of soil compaction. Seeds and shelter becomes more readily available, and the risk of predation down. As a result, the number of mice multiply and abundance of ectoparasites become a source of disease vectors.
Dirzo say, that the human high density may lead to high mass extinction occurred. The high growth in mice and increase pathogen levels will increase the risk of disease transmission. The scientists also details the alarming trend in the extinction of invertebrates. The human population has doubled in the last 35 years, while in the same period the number of invertebrates (beetles, butterflies, spiders and worms) population plummeted by 45 percent.
Biological mass extinction
driven by habitat loss and global climate disruption, impact on the developmental effects of everyday human life. For example, crop pollination worldwide is approximately 75 percent, insects also play an important role in nutrient cycling and organic matter decay. This process helps to ensure the productivity of the ecosystem, in the United States the value of pest control through native predators is estimated at 4.5 billion dollars per year.
This solution is complicated, Dirzo said to immediately reduce the level of change of habitat and over-exploitation will help, but this approach needs to be adapted to local and individual situations. Humans tend to think about the mass extinction
as the loss of species from the face of the earth, but no loss of important ecosystem functioning in which animals play a central role. Unfortunately, many people assume that biological extinction is vague phenomenon.
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