Show Summary Details

p. 162. Viruses are everywherelocked

  • Dorothy H. Crawford


‘Viruses are everywhere’ describes the ‘virosphere’ — the virus biomass of enormous variety and complexity in the environment. Viruses are the most numerous microbes on Earth with an estimated 100 million different types. The largest virus, mimivirus, is thought to fall into an evolutionary position at a point before the animal and plant kingdoms split and indicates the long history of viruses. The abundance of viruses in the oceans means they control the dynamics of marine populations, their interactions, and the entire marine ecosystem. Viruses are also important to land-based ecosystems and their reproductive abilities are highlighted when considering cholera epidemics.

Access to the complete content on Very Short Introductions online requires a subscription or purchase. Public users are able to search the site and view the abstracts and keywords for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can't find the answer there, please contact us.