Sunday, 17 April 2011

Endangered Species




Species: Lear’s Macaw


Type of species: Anodorhynchus leari, a rare Brazilian parrot

Breeding habitsIts: rate of reproduction is 1 to 2 eggs each year during their mating season which occurs from December to May. Not all pairs of birds mate often or at all. These birds reach sexual maturity at around 2 to4 years of age.

Habitat: These birds live in northeastern Brazil. They are also found south of the Amazon River in central and southwestern Brazil, eastern Bolivia, and northeastern Paraguay. It lives in lightly forested areas, swamplands, open savannas, and palm groves, usually near water.

Diet: The nuts of Licuri palm which form a prominent part of its diet. The Lear's Macaws also feed off other fruits found in the area such as pinhao, umbu and mucuma.

Sample food chain:

Why it is endangered: Lear’s Macaw had become endangered due to illegal bird traders, habitat loss caused by human-made fires to clear forest, and goats devouring the birds’ primary food source: licurĂ­ palms. In addition, the cows that live near its nesting grounds often stand on the roots of young Licuri palms causing a large loss of food for these birds.

Current conservation efforts: reforestation efforts of the licurĂ­ palms are being planned to protect their habitat. All present Lear's Macaw conservation projects are managed under the authority of IBAMA. The Committee For The Conservation And Management Of The Lear's Macaw advises IBAMA on the conservation of the Lear's Macaw. n 1997 the Committee for the Preservation of the Lear's Macaw, {Anodorhynchus lean') was formed. In 1999 this Committee was amalgamated with the Committee of Anodorhynchus hyacinthinus and was renamed "The Committee for the Recovery and Management of the Anodorhynchus lean Lear's Macaw and Anodorhynchus hyacinthinus Hyacinth Macaw", with the objective of continuing the work already started.
In addition in 1997 the FNMA (Fundo Nacional do Meio Ambiente) donated funds, thus enabling various projects to be completed. However, much work remains to be done. It is necessary to maintain in the field one biologist, two trainees and an assistant, together with a means of getting around. This requires a four-wheel drive vehicle, i.e. Toyota and includes maintenance and spare parts. Besides this basic infrastructure various priorities should be established in order to carry out the field study.


What can we do to help conserve them: Establish laws to ban the trading of these birds. Do not buy these birds to keep as pets. Support conservation efforts to protect the birds by spreading the words and donating money to the cause.


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__Feiyi

Friday, 15 April 2011

Twitter VS Facebook

1.What features are common between Twitter and Facebook?
      Twitter and facebook are social networking Portal.

2.How are they different in term of features?
      Twitter: Twitter is simple, it is  harder to get your arms around at first.
  • Limited functionality; find people, send brief messages, direct replies
  • Limited to 140 characters per update
  • Not all people find it immediately useful
  • Over-emphasis on follower counts
  • Easily abused for spam and increasing the noise level
  • Relatively smaller installed user base
  • As yet no readily apparent monetization strategy
    Facebook:Facebook offers a portal-like interface somewhat reminiscent of Yahoo.Facebook appeals to people looking to reconnect with old friends and family members .
  • Application mashup; find people, make connections, email, instant messaging, image/video sharing, etc.
  • Most people can quickly grasp the value of connecting with friends, family and established contacts; some people report they use Facebook instead of email and IM
  • More emphasis on deep connections with others vs. who has the most connections
  • “True Friends” feature increases your transparency to selected connections; almost like having private and public profiles
  • Huge
  • “gift giving” and personal data collection make Facebook a powerful advertising platform

3.Besides the web. how else can we access Twitter and Facebook?
wi-fi, iphone,itouch.etc.

4.Why do you think twitter and facebook are popular? what are the main selling points?how are they exploited by businesses?
because you can get more immediate responses and it seems to live somewhere between the worlds of email, instant messaging and blogging , it is can use another way to find people and content all over the Net.
Facebook is a great social networking site where people can connect easily with their friends and families. So one main selling point is the great number of users. Businesses exploit facebook to create brand awareness of their products, drive traffic to their website, generate viral effect through word-of-mouth marketing etc


5.What do you personally like about them?
- Ability to connect with lost lost friends
- keep in touch with friends
- share images and videos with friends
- share my updates with friends and family
- play games and quizzes
- be updated about my friends' life













feiyi&liuxuan