The correct answer is: C. hydrarch succession
Hydrarch succession is a type of ecological succession that occurs in aquatic environments. It is a process of community development that begins with a bare substrate and ends with a climax community of aquatic plants and animals.
The first stage of hydrarch succession is the pioneer stage, which is characterized by the colonization of the bare substrate by algae and mosses. These pioneer species are able to tolerate the harsh conditions of the bare substrate, such as low nutrient levels and high light intensity.
The next stage of hydrarch succession is the intermediate stage, which is characterized by the colonization of the algae and mosses by rooted aquatic plants. These rooted plants are able to take up nutrients from the water and provide shade for the algae and mosses.
The final stage of hydrarch succession is the climax stage, which is characterized by the colonization of the rooted aquatic plants by trees and shrubs. These trees and shrubs are able to take up nutrients from the soil and provide shade for the rooted aquatic plants.
The conversion of a pond to a climax forest community is an example of hydrarch succession because it is a process of community development that begins with a bare substrate and ends with a climax community of trees and shrubs.
A xerarch succession is a type of ecological succession that occurs in dry environments. It is a process of community development that begins with a bare substrate and ends with a climax community of drought-tolerant plants and animals.
A mesarch succession is a type of ecological succession that occurs in intermediate environments. It is a process of community development that begins with a bare substrate and ends with a climax community of plants and animals that are adapted to both wet and dry conditions.
Therefore, the conversion of a pond to a climax forest community is not an example of xerarch succession or mesarch succession.