Lesson 4: Conservation of Biodiversity Flashcards
What are the three components of biodiversity?
genetic diversity
species diversity
ecosystem diversity
What can cause fluctuations in populations with low genetic diversity?
climate change, disease or habitat fragmentations
why is genetic diversity important?
Increases the chance of adaptation
what happens to genetic diversity in small populations?
inbreeding will lead to genetic uniformity.
what is species diversity?
The variety of species seen in a particular habitat.
what is species richness?
the number of different species in an area.
what is species evenness?
the relative abundance of different species in a given area.
what is ecosystem biodiversity?
the variety of ecosystems found in a given geographical area.
why is it important to maintain biodiversity?
provides food, medicine, pollinators, trees and mangroves prevent flooding
What is anthropogenic species extinction caused by?
overexploitation - overhunting/harvesting
habitat loss due to human activity
introduction of invasive species
habitat degradation from pollution
climate change
Give two cases of anthropogenic species extinction
the moas
the tasmanian wolf
What caused the moas to become extinct?
hunted by Polynesians in the 13th century
What caused the tasmanian wolves to become extinct?
hunted down by European settlers in early 1900s. seen as pests and ate sheeps
what are the causes of coral reefs dying?
pollution
fishing activities
coastal development
unsustainable tourism (divers)
climate change
How do we improve the quality of life of the people in developing countries while maintaining ecosystems?
eco tourism - money goes back to local community
international aid
eco-friendly infrastructure
