THE CONCEPT OF SPECIES What are species? Species are the basic taxonomic units of biological classification. This grouping of organisms of "like kind" into discrete and stable units has been traced at least from the time of Plato and Aristotle. The term derives from the Latin "specere" (to look at‚ to behold)‚ with the meaning of "kind‚“ "quality‚" "appearance‚" "shape‚" or "a peculiar sort.“ In the past‚ species were classified according to their shape. Carl Linnaeus (1707-1778)‚ the
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Endemic Species Derek Bunkofske ENVS 201 Conservation Ecology Charles Cole Buena Vista University Endemic Species I chose option 2 for the workshop three assignment which involves defining endemic and finding two endemic species and describe them and their location‚ and what risks they have due to their location and their specific needs. Determine a region with a high percentage of endemic species and a region with a low percentage of endemic species. Explain the specific reasons that
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On the Origin of Species chapter IV outlines Darwin’s proposal on how a new species is generated via natural selection over a long period of time. In Darwin’s theory of speciation‚ he proposes that all organisms within a species must express some degree of variation‚ which allow for organisms with the most advantageous variations to produce the most offspring (Darwin 10) This also means that the variations must be heritable from one generation to the next. In chapter IV Darwin uses the examples variants
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Mrs. Linn English IIII January 14th‚ 2013 How Species Are Becoming Endangered There are so many reasons and factors that are causing all kinds of species to become endangered. Some are natural causes but others are caused by mankind. Species have been coming endangered or sometimes extinct since the beginning of time. Mankind wasn’t such a huge factor until we started to develop more and more as time continued to go on. Almost 99% of threatened species are at risk of being extinct because of human
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Species Interaction * The relationships between two species in an ecosystem. * The interactions between two species need not be through direct contact. Species may affect each other through intermediaries such as shared resources or common enemies. Major factors in evolution and adaptation: * Predation * Competition for scarce resources Terminologies: * Habitat – the actual physical location where a species lives. * Conditions – physical or chemical attributes of the
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Endangered species From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search For other uses‚ see Endangered species (disambiguation). "Endangered" redirects here. For other uses‚ see Endangered (disambiguation). Conservation status | | By risk of extinction | Extinct | Extinct (List) Extinct in the Wild (List) | Threatened | Critically Endangered (List) Endangered (List) Vulnerable (List) | At lower risk | Conservation Dependent (List) Near Threatened (List) Least
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ENDOPHYTES: ARE TROPICAL LEAVES BIODIVERSITY HOTSPOTS? A. ELIZABETH ARNOLD1 AND F. LUTZONI Department of Biology‚ Duke University‚ Durham‚ North Carolina 27708 USA Abstract. Fungal endophytes are found in asymptomatic photosynthetic tissues of all major lineages of land plants. The ubiquity of these cryptic symbionts is clear‚ but the scale of their diversity‚ host range‚ and geographic distributions are unknown. To explore the putative hyperdiversity of tropical leaf endophytes‚ we compared
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Jonathan G. Misa ENSCI BSHRM401 1. 10 common species in the philppine ( flora and fauna ) Sampaguita The sampaguita is a small‚ white flower found in the swamps and forests of the Philippines. These flowers have soft‚ wide‚ paper-thin petals. The foliage is light green and the stems are thick. Many people use these flowers as decorations or garden plants. They are popular for weddings and special occasions. Jackfruit (Artocarpus heterophyllus) Langka is a smooth tree reaching
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Shannon Angus Mrs. Cumbee January 9‚ 2013 Foreign Invaders Invasive species are groups of organisms that are unnaturally occurring to an area. When introduced‚ they can cause economic and physical harm to humans and ecosystems. The importing‚ legally and illegally‚ of invasive species into our society is not only harmful to our population and our ecosystem but also the population of plants and animals in their indigenous homeland. To continue‚ the smuggling of plants and animals into new
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ENDANGERED SPECIES Introduction An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers‚ or threatened by changing environmental or predation parameters. The International Union for Conservation of Nature (IUCN) has calculated the percentage of endangered species as 40 percent of all organisms based on the sample of species that have been evaluated through 2006.Many nations have laws offering protection to
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