This creature had had very short and sad story. Desert c. Coral reefs d. Alpine meadows Solution: Option (c) is the answer. Steller's sea cow lived in a northwest part of the northern hemisphere and lived in a big group. Introduction. The IUCN Red List (2004) documents the extinction of 784 species (including 338 vertebrates, 359 invertebrates and 87 plants) in the last 500 years. Dear Twitpic Community - thank you for all the wonderful photos you have taken over the years. Extinction of Species: ADVERTISEMENTS: Extinction is the disappearance of a species from earth. What is an example of overexploitation? Stellerâs Sea Cow. - the cause of pollution of things such as plastic bags being not properly disposed of - sea creatures confuse a plastic bag for a jellyfish and eat that, then die. Steller's sea cow (Hydrodamalis gigas) is an extinct sirenian described by Georg Wilhelm Steller in 1741. Alien species invasion: When alien species are introduced for a specific purpose, some of them turn invasive and cause extinction or decline of indigenous species. A total of 27 years elapsed between the sea cow’s first contact with Europeans and extinction of the species. The Stellerâs sea cow probably was extinct by 1768. Insects, oysters, octopus, crayfish, sea stars, scorpions, crabs, and sponges are all kinds of this animal class. (d) Among animals, insects are the most species-rich taxonomic group. A third possible cause of extinction is the loss of interactions associated with keystone species. References. Like many species, it was discovered by accident. In 1768 the animal became extinct. Save the Frogs, a frog conservation group, notes that several frog species feel the effects of overharvesting for … Stellerâs sea cow has been seen in Rudyard Kiplingâs Jungle Book as well as in the 2012 movie, Tales of a sea cow. Other, related human causes of the extinction event include deforestation, hunting, pollution, the introduction in various regions of non-native species, and the widespread transmission of infectious diseases spread through livestock and crops. The Sixth Extinction is told in a part textbook, part narrative style; the author gives readers hard facts mixed into detailed personal accounts of her research trips. For example, Steller's sea cow which became extinct due to overexploitation by humans. 15. The bones of an extinct sea cow species that lived about 20 million years ago have been discovered in a cave in the philippines by a team of italian scientists, the expedition head said monday. However, the professor explains that no one know why this creation became extinct, and refutes each of the author`s reasons. He was the first scientist to suggest, based on direct observation, similarities between the ethnography and natural history of the Russian Far East and that of the newly discovered Alaska. Within 3 decades, though, their countrymen had hunted sea cows to extinction. Stellerâs sea cow (Hydrodamalis gigas) is an extinct sirenian described by Georg Wilhelm Steller in 1741. The nearly complete skeleton of a Stellerâs sea cow ( Hydrodamalis â¦
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