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Succession guide
| Question | Answer |
|---|---|
| Define ecological succession | A process where you turn a species' structure into an ecosystem. This can take a very long time. |
| besides plant species what other two changes take place during succession | Available light, humidity, and soil can all change this process |
| explain what happens during ecological succession in a pond or lake (aquatic ecosystem) | It fills with mud slowly but surely until it is marsh or swamp land. |
| Define primary succession? Where does it occure? | Succession in an area not supported by life in more recent times occurs in rocks covered in plants and a sand dune |
| Define secondary succession and three places it occurs | Succession begins once life is supporting that area an abandoned field a forest destroyed by fire and places destroyed by lumbering |
| which type of succession occures more rapidly | Secondary because the soil is already present and autotrophic succession because they make their own food |
| explain why both forms of successions are autotrophic succession | They make their own food and it is a new life being started |
| what is the main source of energy during heterotropphic sucession and an example | Feed on other organisms non living organisms are often the source of energy like fallen logs and dead wood |
| what are the types or organisms involved in the stages of decay of dead wood | Beetles make tunnels and fungi attack other animals enter tunnels bugs establish themselves under the log bark and soon become a pulpy mass then the humus is turned into soil. |
| why does the community of living things change during the stages of ecological succession | Because their resources run out of their environment changes |
| what kind of organisms are the pioneers during succession on a bare rock? what are the symbiotic relationship in lichens | Lichens algae and fungi live together in a symbiotic relationship called mutualism both organisms benefit from this |
| what type of lichens are the first to colozine rock surface? how do they break down the rock | Crustose secret acid onto the rock to get nutrients which weakens the rock |
| next the foliose lichens join the crustode lichens on the rock what do they do on the rock and what do they form on a broken rock | Their working together weaken the stone until it crumbles using the freeze-thaw cycle |
| When the mosses join thw two types of lichens what does this do to develop the soil layer? what kind of seed bearing plants follow? | The fruticose form then weeds and grasses can appear |
| After sun loving shrubs appear what kinds apear? what tree species are often found in the climax forest stage at the end of succession process | Sumacs appear they add seedlings for trees like birch and poplars |
| which of the two main types of succession begins in the bank soil | Secondary succession |
| what kinds od pioneer plants first colonized the bank soil | weeds |
| name the nexxt wo stages after pioneer weeds and grasses give examplws of each stage | shade loving trees and shrubs |
| during sand dune succession in the great lake region what species of trees come after shrubs before pines | Cottonwoods |
| define ecotone | a region of transition between two biological communities |
Created by:
Katiew416