18 Questions
What is a characteristic of areas with high species richness?
Environments that are helpful for a large number of species
What happens to species evenness when relative abundances vary?
It approaches zero
What can occur in an ecosystem with high species richness?
Low species evenness
What is the result of extinction of even one species in an ecosystem?
Countless ripple effects on the entire ecosystem
What is ecosystem diversity?
The variety of different habitats, communities, and ecological processes
What percentage of original natural vegetation must be threatened for an area to be considered a biodiversity hotspot?
At least 70%
What is the primary role of plants in food webs?
Primary producers
What is a characteristic of a biological community?
The species that occupy a particular area and the interactions between those species
What is the significance of biodiversity hotspots in terms of human survival?
They are crucial for human survival
Why do animals tend to inhabit areas with high plant diversity?
Because plants are the base of food webs
What percentage of the Earth's land surface is represented by biodiversity hotspots?
Less than 3%
Why do maps of biodiversity hotspots tend to overlap with maps of natural places that benefit people?
Because hotspots are among the richest and most important ecosystems in the world
What is the approximate number of identified species on earth?
More than 2 million
What is the primary benefit of biodiversity in terms of resource use?
Supplying consumptive and productive goods
What is the estimated percentage of species that have become extinct since the beginning of life on earth?
99.9%
What is the primary reason for the importance of preserving biodiversity?
To ensure human survival in the future
What are the three levels of diversity?
Genetic, species, and ecosystem diversity
What is the approximate number of insects among the identified species?
~1 million
This quiz covers the concepts of species richness and evenness in ecosystems, including how they are measured and their implications for biodiversity. Learn about the differences between species richness and evenness, and how they can vary in different environments.
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