this is the very last post on ecology and the very last post of biology journal.
as mentioned in the previous post, i mentioned that the dodo bird is extinct due to the destruction of the forest (which cut off the Dodo's food supply), and the animals that the sailors brought with them, including cats, rats, and pigs, which destroyed Dodo nests.
so now i would like to further elaborate on them.
After the remote island became inhabited by humans, the dodo's fate was sealed. The poor fowl had lived in relative isolation for so long that it had few defenses and proved to be easy prey for humans and the animals they brought with them. The flightless bird was hunted for sport and food by humans, and its eggs, laid individually in nests on the ground, were devoured by dogs, cats, and pigs. By 1681, the entire species was wipe out. Two similar species were discovered on nearby islands, but sadly, they fared no better and were both extinct by 1750.
On an interesting side note, not only did the extinction of the dodo deprive the world of one of nature's most curious creations, it almost led to the extinction of yet another species, a certain type of tree whose seeds could only germinate after passing through the digestive tract of the dodo. With the disappearance of the dodo, the tree was slowly dying out. There were only 13 trees left when it was discovered that turkeys could also be used to help the seeds activate, and the tree, now known as the dodo tree, has avoided extinction for the time being.
so from here we can link it to the posts on extinction. it was due to the hunters that wiped on all of them. worse still, their generation of babies are also wiped out by the dogs, cats and pigs. this lead to a zero replacement fertility level.
http://ask.yahoo.com/20030715.html
as mentioned in the previous post, i mentioned that the dodo bird is extinct due to the destruction of the forest (which cut off the Dodo's food supply), and the animals that the sailors brought with them, including cats, rats, and pigs, which destroyed Dodo nests.
so now i would like to further elaborate on them.
After the remote island became inhabited by humans, the dodo's fate was sealed. The poor fowl had lived in relative isolation for so long that it had few defenses and proved to be easy prey for humans and the animals they brought with them. The flightless bird was hunted for sport and food by humans, and its eggs, laid individually in nests on the ground, were devoured by dogs, cats, and pigs. By 1681, the entire species was wipe out. Two similar species were discovered on nearby islands, but sadly, they fared no better and were both extinct by 1750.
On an interesting side note, not only did the extinction of the dodo deprive the world of one of nature's most curious creations, it almost led to the extinction of yet another species, a certain type of tree whose seeds could only germinate after passing through the digestive tract of the dodo. With the disappearance of the dodo, the tree was slowly dying out. There were only 13 trees left when it was discovered that turkeys could also be used to help the seeds activate, and the tree, now known as the dodo tree, has avoided extinction for the time being.
so from here we can link it to the posts on extinction. it was due to the hunters that wiped on all of them. worse still, their generation of babies are also wiped out by the dogs, cats and pigs. this lead to a zero replacement fertility level.
http://ask.yahoo.com/20030715.html
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