How do you differentiate between a keystone species and a dominant species 1 nbs...........

Environment and Ecology Concept of Ecology

How do you differentiate between a keystone species and a dominant species?

1. A dominant species in an ecosystem is the most abundant species present. It makes up the highest percentage of the total biomass in the system

2. A keystone species is one that has the greatest effect on all of the other species in an ecosystem

Which of the following statements above is/are correct?

1 Only

2 Only

Both 1 and 2

Neither 1 nor 2

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Explanation:

A dominant species in an ecosystem is the most abundant species present. It makes up the highest percentage of the total biomass in the system.

A keystone species is a species that has a disproportionately large effect on its natural environment relative to its abundance. Such species are described as playing a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem and helping to determine the types and numbers of various other species in the community. A keystone species is a plant or animal that plays a unique and crucial role in the way an ecosystem functions. Without keystone species, the ecosystem would be dramatically different or cease to exist altogether. Some keystone species, such as the wolf, are also apex predators.