2.3 Human Activity Impacts on Ecosystems

Learning Objectives

  1. Identify five threats to ecosystems from human activities.
  2. Understand what factors affect climate change and what the current trajectory and implications of climate change are for the next century.
  3. Discuss the role of population, affluence, and technology in driving human impacts.

Business and human activities can be direct threats to ecosystems. They can cause destruction, degradation, and the impairment of biodiversity and other natural resources. Ecosystem threats include (1) climate change, (2) pollution, (3) habitat destruction, (4) overexploitation, and (5) introduction of invasive species. Business and human activities can stress the ecosystem they operate in reducing its overall health and at some point the accumulation of all negative impact from human activities can exceed the ecological threshold of the planet. Driving these human activities are population, affluence, and technology.