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Communities rich in species diversity are considered as stable communities. Which of the following is/are features of stable communities?
High variation in productivity from year to year.
Resistance to occasional anthropogenic disturbances.
Resistance to invasion by alien species Select the correct answer using the code given below.
- a)1 and 2 only
- b)2 and 3 only
- c)3 only
- d)1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Communities rich in species diversity are considered as stable commun...
- George David Tilman is an American ecologist. It is said that a stable community should not show too much variation in productivity from year to year; it must be either resistant or resilient to occasional disturbances (natural or man-made), and it must also be resistant to invasions by alien species. Hence statements 2 and 3 are correct and 1 is not correct.
- David Tilman‘s long term ecosystem experiments using outdoor plots show how these attributes are linked to species richness in a community. Tilman found that plots with more species showed less year-to year variation in total biomass. He also showed that in his experiments, increased diversity contributed to higher productivity.
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Communities rich in species diversity are considered as stable commun...
Introduction:
Communities rich in species diversity are considered as stable communities. Stability refers to the ability of a community to maintain its structure and function over time. Stable communities exhibit certain features that contribute to their resilience and resistance to disturbances.
Features of stable communities:
1. High variation in productivity from year to year:
Stable communities have high variation in productivity from year to year. This means that the productivity levels in these communities fluctuate, but the overall community structure remains intact. This variation in productivity is important because it allows for the survival and persistence of different species under changing environmental conditions.
2. Resistance to occasional anthropogenic disturbances:
Stable communities are resistant to occasional anthropogenic disturbances. Anthropogenic disturbances refer to disruptions caused by human activities such as deforestation, pollution, or habitat destruction. Stable communities have the ability to withstand and recover from these disturbances, maintaining their structure and function.
3. Resistance to invasion by alien species:
Stable communities are also resistant to invasion by alien species. Alien species, also known as non-native or exotic species, are species that are introduced to an ecosystem where they are not naturally found. These species can disrupt the existing community structure and compete with native species for resources. Stable communities have mechanisms in place to resist the invasion and establishment of alien species, which helps maintain their diversity and stability.
Conclusion:
In conclusion, stable communities exhibit high variation in productivity from year to year, are resistant to occasional anthropogenic disturbances, and can resist invasion by alien species. These features contribute to the resilience and long-term stability of these communities, allowing them to maintain their structure and function over time.
Communities rich in species diversity are considered as stable communities. Stability refers to the ability of a community to maintain its structure and function over time. Stable communities exhibit certain features that contribute to their resilience and resistance to disturbances.
Features of stable communities:
1. High variation in productivity from year to year:
Stable communities have high variation in productivity from year to year. This means that the productivity levels in these communities fluctuate, but the overall community structure remains intact. This variation in productivity is important because it allows for the survival and persistence of different species under changing environmental conditions.
2. Resistance to occasional anthropogenic disturbances:
Stable communities are resistant to occasional anthropogenic disturbances. Anthropogenic disturbances refer to disruptions caused by human activities such as deforestation, pollution, or habitat destruction. Stable communities have the ability to withstand and recover from these disturbances, maintaining their structure and function.
3. Resistance to invasion by alien species:
Stable communities are also resistant to invasion by alien species. Alien species, also known as non-native or exotic species, are species that are introduced to an ecosystem where they are not naturally found. These species can disrupt the existing community structure and compete with native species for resources. Stable communities have mechanisms in place to resist the invasion and establishment of alien species, which helps maintain their diversity and stability.
Conclusion:
In conclusion, stable communities exhibit high variation in productivity from year to year, are resistant to occasional anthropogenic disturbances, and can resist invasion by alien species. These features contribute to the resilience and long-term stability of these communities, allowing them to maintain their structure and function over time.
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Communities rich in species diversity are considered as stable communities. Which of the following is/are features of stable communities? High variation in productivity from year to year. Resistance to occasional anthropogenic disturbances. Resistance to invasion by alien species Select the correct answer using the code given below. a)1 and 2 onlyb)2 and 3 onlyc)3 onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?
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