Ecosystems and Biodiversity.pdf

  1. 1、本文档共14页,可阅读全部内容。
  2. 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
  3. 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载
  4. 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
Ecosystems and Biodiversity

Ecosystems and Biodiversity 071024 Bibliotheca Alexandrina Compiled by Shaymaa Ali 2 What is … … Biological Diversity (Biodiversity)? The variety of different species in an ecosystem, genetic variation within a population of a species, and variety of kinds of ecosystems. … A Species? A group of related and similar living organisms that can interbreed among their own species and produce fertile offspring. … Species Diversity? The different types of living organisms within a region or ecosystem (plants, animals, and other life forms). … An Ecosystem? All the living organisms and all the non-living components of a given area interacting as a whole functional unit. … Ecosystem Diversity? The variety of different habitats in a particular area (i.e., wetland, woodland, grassland; coral reef, tide pool, mangrove). Introduction Greater biodiversity makes species and systems more resilient, while loss of biodiversity weakens them, making them more vulnerable to extinction. If a large proportion of the biosphere is invested in only a small number of species (such as humans and their associated domesticated/cultivated species), this will result in an inherently unstable system. The biodiversity, interactions, and functions within ecosystems have developed and evolved over countless years. Changes that have occurred ever so slowly over time have allowed for adaptation of species and ecosystem survival. But, catastrophic and rapid changes can have a disastrous effect on ecosystems and biodiversity of species. Among these are natural events such as volcanic eruptions, floods, tsun

文档评论(0)

l215322 + 关注
实名认证
内容提供者

该用户很懒,什么也没介绍

1亿VIP精品文档

相关文档