ECOLOGY
ORGANISMS AND THE ENVIRONMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Series of gradual changes that occur after a disturbance
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Changes that only happen when species die
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a series of changes that cause a population to increase or decrease
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an INSTANT change caused by a disturbance
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Detailed explanation-1: -Ecological succession is the process by which the mix of species and habitat in an area changes over time. Gradually, these communities replace one another until a “climax community”-like a mature forest-is reached, or until a disturbance, like a fire, occurs. Ecological succession is a fundamental concept in ecology.
Detailed explanation-2: -The Steps of Ecological Succession Disturbance: A disturbance is an event that causes a large and rapid change in an ecosystem. Natural disturbances include wildfires, insect infestations, landslides, avalanches, volcanic eruptions, and floods.
Detailed explanation-3: -Succession is gradual change in the structure and makeup of an ecological community over time. This can happen in an area where a disturbance destroyed an existing ecosystem.
Detailed explanation-4: -For over a century, ecologists have investigated the nature of these changes in communities, documenting the causes and patterns of change, indentifying mechanisms for change, and developing sets of general principles to explain this change. This change in community composition over time is termed succession.
Detailed explanation-5: -The 5 stages of succession are Nudation, Invasion, Competition and Co-action, Reaction, and Climax or Stabilization. At the same location, a succession of biotic communities naturally emerge one after another until the Climax stage is reached. In their early stages, biotic communities develop slowly.