Answer :
Final answer:
The decline of a keystone species can disrupt the balance of an ecosystem, leading to a decrease in biodiversity.
Explanation:
The decline of a keystone species can have a significant impact on the biodiversity of an area. Keystone species play critical roles in maintaining the structure and function of an ecosystem. They have a disproportionate effect on their environment relative to their abundance.
When the population of a keystone species declines to only 10% of its original size, it can disrupt the balance of the ecosystem, leading to a decrease in biodiversity. The interactions between the keystone species and other organisms in the area can be disrupted, causing ripple effects throughout the food web.
For example, if a keystone species is a predator, its decline could lead to an increase in the population of its prey species, which may then outcompete other organisms and reduce their abundance. This can lead to a loss of species and a decrease in overall biodiversity.
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