Posts Tagged ‘species interlocked with environment’

Is Nature impartial in the way life form seeks its biological imperatives and develop?
Every species follows a core idea: thus species of a bird living in a secure environment with no known predator around considers wings are an unnecessary appendage. It is an idea. Dodo was such a bird found in the forests of Mauritius east of Madagascar. Raphus culcullatus was a pigeon-like bird known to weigh some 17 kilograms and the last bird became extinct in late 1600. First sighted by Dutch sailors the species in a matter of 174 years died out. Unfortunately the Portuguese seamen who made their landfall upon this remote island found the meat a delicacy. It is often said they were responsible for their untimely demise. Really? These ponderous and wingless birds were in the habit of laying eggs on the surface: and it had much to do with their undoing. Yes, the Portuguese sailors hunted them for their meat. But rats, monkeys and pigs brought by sailors and left behind did the rest. Extinction was a foregone conclusion with so many accidents adding up.
Each species in its context with environment is like two strips of a zipper locked into each other. How a species draw from wisdom and nature in the long run creates a momentum that may only be broken by circumstances. Dodo as a species realized its error only after the safety of the island was breached. In the wake of seamen followed other calamities.
Zipper is a system where a species is locked in place with the habitat. Purpose of this survival of the species. In the case of mammals the demise of dinosaurs* opened a window of opportunity for them. They could find a foothold and develop. Gradually they succeeded in establishing an interlock with environment. This is called a zipper system where there are many more networks the species could rely on as a support.
Human species from this point advanced to reach the present level.
*An international panel of experts has strongly endorsed evidence that a space impact was behind the mass extinction event that killed off the dinosaurs.
They reached the consensus after conducting the most wide-ranging analysis yet of the evidence.
Writing in Science journal, they rule out alternative theories such as large-scale volcanism.
The analysis has been discussed at the 41st Lunar and Planetary Science Conference (LPSC) in the US.
A panel of 41 international experts reviewed 20 years’ worth of research to determine the cause of the Cretaceous-Tertiary (K-T) mass extinction, around 65 million years ago.
The extinction wiped out more than half of all species on the planet, including the dinosaurs, bird-like pterosaurs and large marine reptiles, clearing the way for mammals to become the dominant species on Earth.
Their review of the evidence shows that the extinction was caused by a massive asteroid or comet smashing into Earth at Chicxulub on Mexico’s Yucatan Peninsula.(BBC News- By Paul Rincon
Science reporter, 4 March, 2010)


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