Multiple Choice
What is a likely consequence for an ecosystem when a native species disappears?
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48. Ecology
Introduction to Ecology
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Why are pioneer species so important for primary succession?
A
They are the largest organisms in the ecosystem.
B
They modify the environment, making it more suitable for subsequent species.
C
They prevent other species from colonizing the area.
D
They are the final stage of ecological succession.
Verified step by step guidance1
Understand the concept of primary succession: Primary succession occurs in lifeless areas where there is no soil, such as after a volcanic eruption or glacier retreat. It involves the gradual establishment of a biological community.
Identify the role of pioneer species: Pioneer species are the first organisms to colonize a barren environment. They are typically hardy species that can withstand harsh conditions and begin the process of soil formation.
Recognize how pioneer species modify the environment: Pioneer species, such as lichens and mosses, break down rocks and accumulate organic material as they grow and die, gradually creating soil that can support other plant life.
Acknowledge the importance of environmental modification: By altering the environment, pioneer species make it more hospitable for other species, facilitating the arrival and establishment of more complex plant and animal communities.
Conclude the role of pioneer species in succession: Pioneer species are crucial for primary succession because they initiate ecological development and pave the way for subsequent species, leading to increased biodiversity and ecosystem complexity.
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