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hold. Before the fire, the vegetation was dominated by tall trees with access to the major plant energy resource: sunlight. Their height gave them access to sunlight while also shading the ground and other low-lying species. After the fire, though, these trees are no longer dominant. Thus, the first plants to grow back are usually annual plants followed within a few years by quickly growing and spreading grasses and other pioneer species. Due to, at least in part, changes in the environment brought on by the growth of the grasses and other species, over many years, shrubs will emerge along with small pine, oak, and hickory trees. These organisms are called intermediate species. Eventually, over 150 years, the forest will reach its equilibrium point where
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Vegetation structure is affected by fire. In some types of ecosystems this creates a process of renewal. Following a fire, early successional species disperse and establish first. This is followed by late-successional species. Species that are fire intolerant are those that are more flammable and are
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forests cleared by wildfire. Wildfires will burn most vegetation and kill those animals unable to flee the area. Their nutrients, however, are returned to the ground in the form of ash. Thus, even when areas are devoid of life due to severe fires, the area will soon be ready for new life to take
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grasslands are caused by human activities such as logging, forest clearing for shifting cultivation, agriculture and grazing, and also by frequent fires. The latter is a frequent result of human interference. However, when not maintained by frequent fires and human disturbances, they regenerate
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Generation of carbonates from burnt plant material following fire disturbance causes an initial increase in soil pH that can affect the rate of secondary succession, as well as what types of organisms will be able to thrive. Soil composition prior to fire disturbance also influences secondary
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Soil properties change during secondary succession in
Imperata grassland area. The effects of secondary succession on soil are strongest in the A-horizon (0–10 cm (0.0–3.9 in)), where an increase in carbon stock, N, and C/N ratio, and a decrease in bulk density and pH are observed.
94:. 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); bulk density, pH, and soil texture (sand and clay).
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has closed cones that open for dispersal when exposed to heat caused by forest fires. It grows in clusters because of this limited method of seed dispersal. A tough fire resistant outer bark and lack of low branches help the knobcone pine survive fire with minimal damage.
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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 as soil is already present, and
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is no longer changing and resembles the community before the fire. This equilibrium state is referred to as the climax community, which will remain stable until the next disturbance.
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Burczyk, Jaroslaw; Adams, W. T.; Shimizu, Jarbas Y. (3 October 1996). "Mating patterns and pollen dispersal in a natural knobcone pine (Pinus attenuata Lemmon.) stand".
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The short-lived and shade-intolerant evergreen trees die as the larger deciduous trees overtop them. The ecosystem is now back to a similar state to where it began.
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desolated by fire. More tolerant species are able to survive or disperse in the event of fire. The occurrence of fire leads to the establishment of deadwood and
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grassland. The byproducts of combustion have been shown to affect secondary succession by soil microorganisms. For example, certain fungal species such as
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succession, both in rate and type of dominant species growth. For example, high sand concentration was found to increase the chances of primary
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usually occurs in a place lacking soil. Many factors can affect secondary succession, such as trophic interaction, initial composition, and
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Yassir, I.; Van der Kamp, J.; Buurman, P. (2010). "Secondary succession after fire in
Imperata grasslands of East Kalimantan, Indonesia".
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Fire can act as a seed-dispersing stimulant. Many species require fire events to reproduce, disperse, and establish. For example, the
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have a significantly decreased success rate in spore germination within fire-affected areas, reducing their ability to recolonize.
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Fast-growing evergreen trees and bamboo trees develop to their fullest, while shade-tolerant trees develop in the understory.
82:(e.g. a forest or a wheat field) to a smaller population of species, and as such secondary succession occurs on preexisting
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MacKinnon, K., Hatta, G., Halim, H., Mangalik, A., 1996. Ecology of
Kalimantan. The ecology of Indonesia Seri Vol. III
149:. strongly increase with the age of regeneration, but these species are commonly found in the secondary forest.
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311:"Secondary succession in an experimentally fragmented landscape: Community pattern across space and time"
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decreases, the percentage of shrubs and young trees clearly increases with time. In the burned plots,
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Van der Kamp, J.; Yassir, I.; Buurman, P. (2009). "Soil carbon changes upon secondary succession in
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has the highest coverage but it becomes less dominant from the fourth year onwards. While
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Yassir, I. (15 April 2010). "Secondary succession after fire in
ImperataIndonesia".
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Widden, P. (March 1975). "The effects of a forest fire on soil microfungi".
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naturally and speedily to secondary young forest. The time of succession in
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in forests. This creates habitat and resources for a variety of species.
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Cook, W.M.; Yao, J.; Forster, B.L.; Holt, R.D.; Patricks, L.B. (2005).
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Redevelopment of an encology after an event that changes it radically
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Small bushes and trees begin to colonize the public area.
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Melastoma malabathricum, Eupatorium inulaefolium, Ficus
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The secondary succession of an oak and hickory forest
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The fire leaves behind empty, but not destroyed soil.
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A classic example of secondary succession occurs in
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stocks also increase upon secondary succession from
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Grasses and other herbaceous plants grow back first.
133:grassland (for example in Samboja Lestari area),
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218:species composition
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433:2017-07-30
339:1808/16487
293:References
272:Vegetation
256:growth in
72:harvesting
250:Pteridium
145:sp., and
80:ecosystem
76:hurricane
503:Heredity
362:Geoderma
358:Imperata
258:Imperata
254:Imperata
168:Imperata
159:Imperata
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131:Imperata
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119:Imperata
114:Examples
86:whereas
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318:Ecology
213:hickory
314:(PDF)
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100:seeds
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
