PMF IAS Current Affairs
PMF IAS Current Affairs

Beavers, The Ecosystem Engineers and Keystone Species

Table of contents


  • Context (WION): After 400 years, baby beaver takes birth in London.
  • Beavers are semiaquatic amphibious rodents of the Northern Hemisphere.
  • They are the largest rodents in North America and Eurasia.
  • They are the second largest rodents worldwide.
  • Distribution: They are native to North America, Europe, and Asia.
  • Habitat: Streams, rivers, marshes, and ponds and on the shorelines of large lakes.
  • Conservation Status:


Significance of Beavers

  • Beavers build dams and lodges using tree branches, vegetation, rocks and mud.
  • Dams restrict water flow, and lodges serve as shelters.
  • Their infrastructure creates wetlands used by many other species, and because of their effect on other organisms in the ecosystem, beavers are considered keystone species.
  • Ecologists often refer to beavers as “ecosystem engineers” because of their ability to alter the landscapes in which they live.
  • Keystone Species: It is a species whose addition to or loss from an ecosystem leads to significant changes in the occurrence of at least one other species.
    • If keystone species are lost, it will result in the degradation of the whole ecosystem.
    • Considered important in determining the presence of many other species in that ecosystem.
    • Eg: Top level predators

Types of Species Keystone Endemic Indicator Umbrella Species ()

Types of Species Keystone, Endemic, Indicator, Umbrella Species


Sharing is Caring !!

Newsletter Updates

Subscribe to our newsletter and never miss an important update!

Assured Discounts on our New Products!

Leave a Reply

Your email address will not be published. Required fields are marked *


Never miss an important update!