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课件网) Unit 3 Fascinating parks 1. To learn about a BioBlitz in Rock Creek Park. 2. To introduce some parks and activities in China with different species of plants and animals. Do you know what a BioBlitz is A BioBlitz is an event that focuses on finding and identifying as many species as possible in a specific area over a short period of time. At a BioBlitz, scientists, families, students, teachers, and other community members work together to get a snapshot of an area’s biodiversity. These events can happen in most any geography—urban, rural, or suburban—in areas as small as a backyard or as large as a country. Work in groups and use the phrases in the box to describe what is going on in the photos. people wearing orange vests park ranger a person holding a frog A woman showing how to use a butterfly net An insect trying to escape a Petri dish A man taking photos Before You Watch people wearing orange vests (背心) park ranger (管理员) a man taking photos a woman showing how to use a butterfly net an insect trying to escape a Petri dish a person holding a frog While You Watch Decide if the following statements are true or false. 1. Dr Pimm says, “The extraordinary thing about this Biobitz is just how little stuff there is here! There really aren’t many wild animals here.” 2. Park rangers show a group how to catch frogs. 3. David Littschwager is taking photos of insects. He says, “I don’t like spiders.” 4. Even at the end, there were a lot of plants and creatures that they couldn’t identify. 5. The real purpose of the Bioblitz is to get people interested in the biodiversity that’s all around them, even in their own backyards. Work in groups of four and discuss the following questions. 1. This Bioblitz was conducted in the middle of a large city. Do you think there is as much biodiversity in your city or town Why or why not 2. Are there any parks in your city or town where you can find many different kinds of plantsand animals What activities can you do there After You Watch Learn more about BioBlitz on the Internet.“竞生多”（BioBlitz）简史 说来时间长也不太长，"竞生多"（BioBlitzes）这个词最初是由美国国家公园管理局博物学家Susan Rudy提出的，同时这个伟大的科学家还帮忙举办了有史以来的第一场生物限时寻活动。1996年，在华盛顿特区凯尼尔沃思水上花园，举行了第一场生物限时寻。此次活动成绩斐然———大约确定了有1000个物种。 Sam Droege（USGS）和Dan Roddy（NPS）在其他政府科学家的协助下进行了生物多样性的首次记录。公众、特别是新闻媒体，也都收到了邀请。 自第一次生物限时寻活动成功以来，20多年中，世界各地的许多组织开始陆续模仿、复制这一活动。从那时起，大多数“竞生多”活动都包含一个公共部分，以便成人、孩子、青少年和任何感兴趣的人都可以加入该领域的专家和科学家。参与这些动手实地研究是人们了解生物多样性、并更好地理解如何保护生物多样性的一种有趣和令人兴奋的方式。 1998年，哈佛生物学家E.O. Wilson和马萨诸塞州的野生动物专家Peter Alden开发了一个程序，为沃尔登池（Walden Pond）周围的生物物种进行编目。这促成了 ... ...
