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15 January, 04:57

Which of the following types of succession would most likely occur following a forest fire? a primary succession b old field succession c secondary succession d lake succession

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  1. 15 January, 08:14
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    Primary and secondary succession both create a continually changing mix of species within communities as disturbances of different intensities, sizes, and frequencies alter the landscape. The sequential progression of species during succession, however, is not random. At every stage certain species have evolved life histories to exploit the particular conditions of the community. This situation imposes a partially predictable sequence of change in the species composition of communities during succession. Initially only a small number of species from surrounding habitats are capable of thriving in a disturbed habitat. As new plant species take hold, they modify the habitat by altering such things as the amount of shade on the ground or the mineral composition of the soil. These changes allow other species that are better suited to this modified habitat to succeed the old species. These newer species are superseded, in turn, by still newer species. A similar succession of animal species occurs, and interactions between plants, animals, and environment influence the pattern and rate of successional change.

    In primary succession, newly exposed or newly formed rock is colonized by living things for the first time.

    In secondary succession, an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.

    Secondary succession is one of the two types ecological succession of a plants life.

    As opposed to the first, primary succession, secondary succession is a process started by an event (e. g. forest fire, harvesting, hurricane, etc.) that reduces an already established ecosystem (e. g. a forest or a wheat field) to a smaller population of species, and as such secondary succession occurs on preexisting soil whereas primary succession usually occurs in a place lacking soil.

    Many factors can affect secondary succession, such as trophic interaction, initial composition, and competition-colonization trade-offs. The factors that control the increase in abundance of a species during succession may be determined mainly by seed production and dispersal, micro climate; landscape structure (habitat patch size and distance to outside seed sources); [1] bulk density, pH, and soil texture (sand and clay).

    Simply put, secondary succession is the ecological succession that occurs after the initial succession has been disrupted and some plants and animals still exist. It is usually faster than primary succession
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