Biological invasions : economic and environmental costs of by David Pimentel Ph.D.

By David Pimentel Ph.D.

''A revised, accelerated, and up to date moment model to the profitable Biological Invasions: fiscal and Environmental expenses of Alien Plant, Animal, and Microbe Species, this reference discusses how non-native species invade new ecosystems and the next financial and environmental results of those species. With 9 new chapters, this article offers distinctive details at the significant components

''Some 10 million species of vegetation, animals, and microbes are proposal to inhabit the earth, yet up to now simply approximately 1.5 million of those were pointed out. an insignificant 15 of the nearly 250,000 recognized plant species give you the world's human inhabitants with approximately ninety percentage of its food.1 those plants are wheat, rice, corn, rye, barley, soybeans, and customary millet. even supposing those plants at the moment are grown in approximately each state, just one or of those crop species originated in any particular nation. between animals, 8 species at present give you the bulk of the beef, milk, and eggs ate up by means of people. those top cattle species are farm animals, buffalo, sheep, goats, horses, camels, chickens, and geese. Farms within the usa feed nearly a hundred million farm animals, 7 million sheep, and nine billion chickens each one year''-- Read more...

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Extra resources for Biological invasions : economic and environmental costs of alien plant, animal, and microbe species

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Economic costs relating to the introduction of these species are related where possible from cost analyses, but in some cases, the best guesstimate is ­presented. Environmental costs are difficult to determine for most pests due to unknown impacts. How, for instance, would one estimate the damage done to the environment by the practice of spraying insecticide over a mangrove mosquito ­breeding site, apart from simply monitoring local animal populations or the extent of fish breeding? While local effects may be easier to obtain, broader effects are confounded by too many factors to enable a reasonable level of certainty in any conclusion.

28 The banks of the Finke River in central Australia were originally dominated naturally by river red gum (Eucalyptus camaldulensis), but after serious flooding of the river system in 1974, tamarisk seeds were washed downstream from homesteads where the trees had been planted for amenity and shade. Within 15 years of the flood, the eucalypt riverine woodland had changed to one dominated by tamarisk, and various indices of biodiversity had changed markedly. Regeneration of the previously dominant native tree was reduced, the floristic composition of the ground vegetation was changed, and the numbers of reptiles and most birds were reduced—all negative impacts.

14. Combellack, J. H. 1987. Weed control pursuits in Australia. Chem and Ind (April, 1987): 273–280. 15. Jones, R. et al. 2000. The distribution, density and economic impact of weeds in the Australian annual winter cropping system. Technical Series No. 4, CRC for Weed Management Systems, Adelaide. 16. Sinden, J. et al. 2004. The economic impact of weeds in Australia. Technical Series No. 8, CRC for Australian Weed Management, Adelaide. 17. Medd, R. , and S. Pandey. 1990. ) in the Australian wheat industry.

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