Tuesday, April 19, 2011

Biology - Assessment Task 2

Siberian Tigers


-The Siberian tiger also known as the Amur, Altaic, Korean, North Chinese or Ussuri tiger.
-Type of species: Mammal 
-One of eight different subspecies of tigers and the largest cats currently living on Earth.
-Is a subspecies of tiger which once ranged throughout Western Asia, Central Asia and eastern Russia, and as far east as Alaska during prehistoric times.
-Is the biggest of the eight recent tiger subspecies and the largest living felid, attaining 320 kg in an exceptional specimen.
-Genetic research in 2009 revealed that the current Siberian tiger population is almost identical to the Caspian tiger, a now extinct western population once thought to have been a distinct subspecies.
 
Habitat


-There are about 330-370 adult Siberian tigers left in the wild (at early 2009).

-Its range is limited to the Amur region of Russia in the Far East (most are here), where it is now protected and China (very low population, 18-22) and possibly Korea. The region (i.e. distribution of this tiger) is shown on the map below:

-A Siberian tiger cub, a naturally very precious animal, was found trapped in a woodpile in the snowy northeast of China. This is the first time the Siberian tiger has been seen in China for 60 years according to the Times author.
-Within the regions in Russian where this tiger can be found is, for example, the area of Sikhote-Alin Zapovednik. Sikhote-Alin is a mountain range in Primorsky & Khabarovsk Krais. It is about 900 km to the NE of Vladivostok. "Zapovednik" refers to a protected area in Russia. These areas are kept wild.
-This is a picture of Central Sikhote-Alin, which is Siberian tiger habitat and a UNESCO World Heritage Site:

-The mountains of the area are densely forested with birch and conifers on higher slopes. On the lower slopes there is mixed deciduous forest. This area generally is one of the leading lumbering areas of the Russian Far East. Minerals are also mined in the area. No doubt outside the protected reserve these activities have a substantial negative impact on the Siberian tiger habitat and the tiger's survival, therefore. The human population is sparse.

-Unlike some big cats like lions, adult tigers like to live alone (except for mother tigers with cubs). This is partly because in the forest, a single tiger can sneak up and surprise its prey better than a group of tigers can.


Diet

-Siberian Tiger is a Carnivore.

-As these animals live in the cold climate where the winter is almost all the year round and that is why they need a lot of meat. They must eat at least 20 pounds a day to keep fit and they may eat up to 100 pounds at a time. Their strength allows them to drag prey for long distances, and if there is too much food, they hide it in secure places. They spend almost all of their time hunting. 

-The Siberian tiger's main prey was wild boar, though it occasionally fed on roe deer, red deer and domestic animals such as dogs, pigs, sheep, and cattle in winter.

A Sample of Food Chain

Sun --> Plants --> Deer --> Siberian Tiger


Why are Siberian Tigers Endangered?

 
-There are a lot of reasons because of which the population of these animals decreases; the main one is the fact that man influences greatly the life of the animals

-Poaching was unquestionably the most serious threat to the Siberian tiger's existence. All tiger sub-species have been hunted by humans since ancient times. Per to the WWF (World Wildlife Fund), "tigers are poisoned, shot, trapped and snared, and the majority of these animals are sought to meet the demands of a continuing illegal wildlife trade - which includes traditional Chinese medicine." 



-China made medicinal usage of tiger bones illegal in 1993. However, tiger parts are highly valuable, their trade lucrative even today.

-Even though it is illegal to kill a tiger, wild tigers are still being poached today because their bones, whiskers and other body parts can be sold on the black market for a lot of money.



-The other vital concern for the survival of the Siberian tiger in the wild is habitat loss.

-Research has demonstrated the Siberian tigers require vast forest landscapes to survive. However logging, both legal and illegal is threatening the tigers home by fragmenting their habitat thereby isolating them from each other.

-In addition, the continuous creation of new logging roads provide poachers with access to formerly remote areas.

-So in essence, for the Siberian tiger to survive in the wild, and no longer be considered and endangered species two things must happen. First, habitat encroachment must stop and secondly, the thousands of years old tradition of using tiger parts for medicinal purposes must also end



Conservation Efforts


Siberian Tigers in Russia
In this century, the Siberian tigers (sometimes called the Amur, Manchurian, or Northeast China tiger), have survived four wars, two revolutions, and now an onslaught on its forests. There are three protected areas for tigers in Russia-the Sikhote-Alin (3,470 km2), Lazovsky (1,165 km2), and Kedrovaya Pad (178 km2) Reserves-inland from the Sea of Japan in the Russian Far East.
Siberian Tigers in China
Sightings of Siberian tigers in Changbaishan, near the Chinese border with North Korea, were reported in Chinese newspapers in 1990, and some are still found along the Russian border. The Cat Specialist Group suggests that there are probably fewer than 50 Siberian tigers in China.
Siberian Tigers in Zoos

The captive program for Siberian tigers is the largest and longest managed program for any of the subspecies. The Siberian tigers tiger served as one of the models for the creation of scientifically managed programs for species in captivity in zoos and aquariums worldwide. According to the 1997 International Tiger Studbook there are about 501 Siberian tigers managed in zoos. This captive population is descended from 83 wild-caught founders. For the most part, the Amur or Siberian tiger is considered secure in captivity, with a large, genetically diverse and stable population.

-ZSL's Amur tiger conservation project is focused on non-invasive population monitoring, anti-poaching efforts, and increasing education and awareness.

-This project is run by tiger biologist Linda Kerley and her husband Misha Borisenko, an expert wildlife tracker. Linda and Misha need more funds for buying camera traps and to keep the jeep running. If you would like to donate, your funds would be helping to secure a future for both Amur tigers and their smaller cousins, the Amur leopards.


 What we can do to help conserve them?
Conserve Habitats
 
    •    One of the most important ways to help threatened animals survive is to protect their habitats permanently in national parks, nature reserves or wilderness areas. There they can live without too much interference from humans. It is also important to protect habitats outside reserves such as on farms and along roadsides.

    •    You can visit a nearby national park or nature reserve. Some national parks have special guided tours and walks for kids. Talk to the rangers to find out whether there are any threatened species and how they are being protected. You and your friends might be able to help the rangers in their conservation work.

    •    Some areas have groups which look after local lands and nature reserves. They do this by removing weeds and planting local native species in their place. You could join one of these groups, or even start a new one with your parents and friends. Ask your local parks authority or council for information.

    •    By removing rubbish and weeds and replanting with natives you will allow the native bush to gradually regenerate. This will also encourage native animals to return.


 
*Encourage others to avoid traditional Chinese medicines that use tiger body parts. Poachers kill an average of one wild tiger each day, mostly for use in traditional Chinese medicines. Historically, people believed that tiger parts had healing powers, but the practice has continued despite research showing no exceptional value from the use of tigers.
*Support the enforcement of bans on the killing or international trade of tigers or tiger parts. Although many countries have signed on to Convention on International Trade in Endangered Species of Fauna and Flora agreement with regards to tigers, killing tigers continues.
*Donate money to tiger conservation organizations that use the money to fund research on tiger habitat and behavior. These organizations also fund education programs and in some cases, purchase tiger habitat to protect it from development. By giving money to the organizations, you will be helping to conserve tigers around the world.

*Support accredited zoos and wildlife sanctuaries that actively participate in tiger research and conservation. Some accredited zoos have captive breeding programs and many spend time researching tiger behavior and health.
*Volunteer to work with conservation organizations to educate and mediate with farmers who live in tiger habitats. Conflict between tigers and humans can lead to killing tigers. Working with local individuals to reduce their dependence on forest lands allow habitats to be saved and it reduces conflicts.

*Take an eco-tour that focuses on tigers. Tourism dollars produced by responsible tours can help convince governments and businesses that tigers can be profitable in the wild. This creates incentive to protect tigers in their natural habitat.

References:
http://en.wikipedia.org/wiki/Siberian_tiger

http://www.google.com.sg/search?q=Siberian+Tiger&hl=en&biw=1279&bih=567&prmd=ivns&tbm=isch&tbo=u&source=univ&sa=X&ei=ErSlTe6KKcSHrAeenNjeCQ&ved=0CDgQsAQ

http://www.huffingtonpost.com/2011/03/07/siberian-tiger-population_n_829348.html

http://www.alexandgregory.com/siberian_tigers.html

http://www.wcsrussia.org/Projects/SiberianTigerProject/tabid/1222/language/en-US/Default.aspx

http://www.zooschool.ecsd.net/siberian%20tiger.htm

http://animals.nationalgeographic.com/animals/mammals/siberian-tiger/

http://www.wonderclub.com/Wildlife/mammals/SiberianTiger.htm

http://www.tigerhomes.org/cam/tiger.cfm

http://www.endangeredspecie.com/Ways_To_Help.htm

http://www.google.com.sg/imglanding?q=siberian+tiger+wallpaper&hl=en&sa=X&biw=1279&bih=564&tbm=isch&tbnid=CXzJL_RY7ijbIM:&imgrefurl=http://www.desktoprating.com/wallpapers/siberian-tiger-wallpaper.htm&imgurl=http://www.desktoprating.com/wallpapers/animal-wallpapers-pictures/siberian-tiger-wallpaper.jpg&w=1024&h=768&ei=bSOsTbzCJIKHrAfLpOCnCA&zoom=1

http://www.zsl.org/conservation/regions/asia/tiger/amur-tiger-conservation-in-russia,1067,AR.html

http://www.tigersincrisis.com/siberian_tiger.htm

http://www.gotpetsonline.com/siberian-tiger/white-siberian-tiger/why-is-the-siberian-tiger-endangered.html

http://www.pictures-of-cats.org/siberian-tiger-habitat.html

http://www.ehow.com/how_2083025_save-endangered-tigers.html





Thursday, April 14, 2011

Twitter vs Facebook

1. What features are common between Twitter and Facebook?

Facebook can Poke - twitter can Nudge

Facebook can Post Pictures - Twitpic and it tweets with a URL to your picture

We post Videos on FB - Tweet tinyurls, made easy by many twitter clients like twitterific

We can Share Links on FB - Tweet tinyrls

We can Tag pictures on FB - @name callout a person to tag on twitter

We can Comments on FB - Reply to tweets


We can see a shared link and share the link - RT (stronger endorsement by the user)

We can add link to feeds - Star favorite, you can also get back to your favorite tweets later.

We can send message - DM on twitter

We can private profiles by change the settings on FB - Closed updates approved by user

Notification and feeds on FB - Tweets

The status updates on FB - Tweets, in twitter apps like twitterific you can add your location to your tweets or pictures too.

Facebook Apps – keep content fresh on facebook with fun tools = Twitter Apps is evolving with array of tools to offer new ease of use for twitter


RSS feed of feeds = RSS feed of specific user (more granular control, also keeps the focus on the individual)

Threaded comments = Comments not threaded, but theres a twitter app that offers that to people who want to track tweets as conversations





2. How are they different in terms of features?

* Private vs. Public Social Graph

Facebook is our real social graph, real family, friends, collegemates co-workers, teachers, colleagues, fellow churchmates, fellow parents, friends suggested or referred by real friends. Facebook is also single mindedly focused on offering the best privacy controls to the users so they can share as little or as much of their pictures, profiles, videos etc. with their real friends.

Twitter is your public social graph. Everything is open, anyone can follow you and there is lot of chatter anytime you tune in.

*The Real Me, Real Time!

Twitter gets access to the real me by the ability to call out a user with a @username. There is inherent viral play here as that user is now exposed to the followers of the first user, validating their social graph in real time, which is very different than on facebook.

In twitter, you can friend anyone by following them without their knowledge or permission. You allow anyone to follow you and it is optional to friend that person back so the relationship gets mutual and allow them to send you a direct message. This is in contrast to facebook where you friend a person and it has to be mutually agreed and accepted before you can view their profile or post on their wall or see their feeds.

The main difference is that people can ignore their facebook messages.But in twitter if you call someone out in an @reply, it is reaching the real person, like an email. They can choose to ignore you or come check you out quietly and still ignore you or follow you or reply back making it a longer conversation. But you reached the real person. Their lack of communication sometimes becomes communication.

*Different technology building blocks leads to different capabilities

Facebook announced new profile pages for famous persons is trying to cut into that segment of users who follow famous people on twitter.
What is fascinating to note is this is similar functionality but goes to the fundamental difference between facebook and twittr. They built out of different bricks as building blocks.

Twitters fundamental building block is a profile made of tweets. @reply, followers, friends, DM, nudge are layered functionality on top of this.

Facebook’s building block is a profile page. That’s why when Facebook saw twitter get lot of mainstream media, they proactively created Profile Pages , which is a smart, expected move.

*Don’t underestimate the power of search

Facebook is closed, you cannot search any of your own feeds or status updates or comments or likes. You have a basic keyword search that allows to find friends or applications.
Facebook allows google to crawl public profiles and lets google bring it more users.

Summize was built using twitter and later bought by twitter and became twitters their powerful search tool. It also speaks to how open completely open the twitter API is, but that’s a different discussion!

Twitter search allows you to search to find conversation happening on any keywords and subscribe to it as a RSS feed. It is like have a Google SEM engine sending you customers to your RSS feed every 10 seconds.

*Growth Patterns Tells the Real Story of Divergent Paths

Facebook is growing at 1 Million users/month with increased internal users.
Twitter has an organic growth with more companies joining it and experimenting with it.

Twitter is a community or has several communities built into it with its own set of rules and accepted behaviors.

Eg. Adding #tags, #Fridayfollow at end of tweets on Fridays to recommend new friends to follow etc.

So as new users join twitter they enrich their community and become part of it sooner than facebook where the user has to go through the learning curve for each user one user at a time.


3. Besides the web, we can access Twitter and Facebook through cellphone.

4. Why do you think Twitter and Facebook are popular?

Twitter is popular because
-It’s quick


The 140 character limit strictly enforces length, which means that users can check people’s updates quickly and easily. It’s short and simple.

-It’s easily accessible
Users can receive updates on their computer, on their phone, on their BlackBerry, and sooner or later, by carrier pigeon. Twitter is easy to access anywhere you are, and nowadays, it’s a very important factor.

-It’s got a privacy factor to it
It may be surprising, but hearing about what someone is doing during their day, mundane or not, interests a lot of people.

-It’s entirely open
While it may creep some people out, it’s plays an important role in Twitter’s popularity. Anyone, whether or not they have an account, can read anyone’s updates.

-It’s free
If you want to be popular online, you’ve gotta be free. YouTube, Facebook, MySpace… they’ve all done it.



*Facebook is popular because:

-Upload unlimited photos.
Facebook is the most popular website for uploading photos. Not only can users upload unlimited photos, you can also add tags and put comments on your friends' photos. With tagging, we will know when your friends or your contacts add a picture of you in their album.

-Be 'in the know'.
Do you want to know what your friends are doing without using instant messaging softwares like Yahoo! Messenger or MSN? With Facebook's STATUS feature, you can see what your friends are up to without having to ask them - which can definitely save a lot of time and effort.
Interact with friends through games and other applications.

-Facebook changed the way people use applications for social networking websites.
Applications like games and tests (Poker, Trivia Games, Get-to-know-yourself tests, "What does your birthday mean?" test, "Are you Normal?" test, etc) are being used to encourage more social interaction through the Internet. You don't have to meet each other face to face to be able to play poker.

You can also join different groups and causes like anti-war or "Stop Global Warming". When joining these causes, you can contribute in any form such as online support or money.

-Send gifts!
With Facebook's Gift feature, you can select from hundreds of icons from Facebook's virtual gift shop and add a message to send to your friends. You can send flowers, shoes or even a bone to your friend's virtual pet. If it's a more personal gift, you have the option to give it privately so others wouldn't know. You can get from the free gifts section or if you have money to spare, you can get virtual gifts for $1.00.


5. What do you personally like about them?


I like to use Facebook because almost my friends are using them. I want to update their information, pictures and all the things about them through Facebook. I also can find the person I want to find just by their name. My friends and I can share to each other the information, pictures, stories or videos also. That's why I love Facebook.

I prefer Facebook than Twitter. Twitter is also interesting but because my friends are not using so I did not usually use them. Twitter is easy to use but it quite boring for me to use. However, I still like to sign in twitter to read quotes or tweet from some famous person.