Biology 101 book pdf

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The terminology in this page contains definitions for invasion biology terms in common usage today, taken from accessible publications. References for each definition are included. Also, many scientists and managers feel that there is no firm definition of non-indigenous species, native species, exotic species, “and so on, and ecologists do not use the terms consistently. Biologists today spend more time and effort on invasive species work because of the rapid spread, economic cost, and effects on ecological systems, so the importance of effective communication about invasive species is clear. Controversy in invasion biology terms exists because of past usage and because of preferences for certain terms. The large number and current complexity of terms makes interpretation of some of the invasion biology literature challenging and intimidating. Also, the status and identification of any species as an invader, a weed, or an exotic are “conditioned by cultural and political circumstances.

Where words in a sentence are also defined elsewhere in this article, they appear in italics. Less commonly used in most literature. In general, the control of the numbers of one organism as a result of natural predation by another or others. This term is becoming less common in usage. A species introduced to a new area or country. Production of novel genotypes, through mating between distinct species or ecotypes. Novel genotypes may be more invasive than parental genotypes.

Generally, this term refers to a subset of plants or animals that are introduced to an area, survive, and reproduce, and expand beyond the original area of introduction. This is the biological definition. Practical definitions add that they cause harm economically or environmentally within the new area of introduction. Other definitions include the following: 5. This term has also been defined as: 1. A plant associated with human dwellings, construction, or agriculture, that usually colonizes disturbed or waste ground.

New York, NY: Oxford University Press. The Dictionary of Ecology and Environmental Science. New York, NY: Henry Holt and Company. Weed Ecology in Natural and Agricultural Systems. Coastal Waters: Pew Oceans Commissions Report. Pew Oceans Commissions: Washington, DC.

Overview of potential piscicides and molluscicides for controlling aquatic pest species in New Zealand. Published by Department of Conservation, New Zealand. Accelerating invasion rate in a highly invaded estuary. A neutral terminology to define ‘invasive’ species.

Diversity and Distributions 10: 134-41. Executive Order 13112 of February 3, 1999: Invasive Species. Invasive species and public green space in Toronto. A problem of taxonomy among biologists of alien species in Hawaii.