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Essay / Research Paper Abstract
An 8 page discussion of the relationship that exists between beak morphology of four specific species of finches in the Galapagos Islands and precipitation. The author links ancient climatological trends with finch evolution and ties existing patterns in biodiversity with contemporary climatological trends. Includes a graph illustrating this association. Bibliography lists 4 sources.
Page Count:
8 pages (~225 words per page)
File: AM2_PPfinchB.rtf
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of the relationship that exists between beak morphology of four specific species of finches in the Galapagos Islands and precipitation. The author links ancient climatological trends with finch evolution
and ties existing patterns in biodiversity with contemporary climatological trends. Introduction
"Darwin Island" and "Wallace Island" are located in the Galapagos Islands, a collection of large and small islands that amount collectively to about 8000 square kilometers of
land (Binde, 1995). The Galapagos Islands are spread out over some 45,000 kilometers of ocean (Binde, 1995). With Darwin Island at its northwest head, the resulting archipelago is
450 kilometers long (Binde, 1995). The plant and animal species which occupy these islands provided the basis for Charles Darwins theory of evolution, a theory that contends that evolution
works through a process of natural selection, a process in which the strong and fit survive to perpetuate their genes but in which the weak and unfit die off.
Strength and fitness are concepts which are interrelated to the environment. Organisms who are best adapted to a particular set of environmental parameters outcompeted those who are not as
well adapted. In other words, animals which are anatomically well-suited to their environments are considered "fit" while animals which are not are considered unfit. "Fit" animals are also
behaviorally flexible animals. The finch species are particularly interesting in this regard. Darwin traveled to the Galapagos in 1835.
He documented the presence of hundreds of different plant and animal species. Among these species were several ground finch species in the Geospiza genus, a genus that was later
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