ECOLOGY
ECOLOGICAL SUCCESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The amount of available sunlight is reduced
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The area has more soil to support complex plants. The competition decreases the pioneer species role
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The area is more susceptible to the wind. Seeds are captured in the pioneer plants and germinate at thigh rate
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The temperature is not as extreme as it was. Fewer pioneer species reproduce
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Detailed explanation-1: -Pioneer species such as lichen and moss inhabit an area after a major disturbance, such as volcanic eruption. Over time, other species are found in the disturbed are, and the number of pioneer species decreases. why does the number of pioneer species decrease? The area has more soil to support complex plants.
Detailed explanation-2: -The first organisms to appear in areas of primary succession are often mosses or lichens. These organisms are known as pioneer species because they are the first species present; pioneer species must be hardy and strong, just like human pioneers.
Detailed explanation-3: -During primary succession on land, fungi and lichen are the most common pioneer species. They break down minerals in the rock to form soil, which allow subsequent communities to colonize the area.
Detailed explanation-4: -After an environmental disturbance such as a volcanic eruption or forest fire, communities are able to replace lost species through the process of succession. Primary succession occurs after a volcanic eruption or earthquake; it involves the breakdown of rocks by lichens to create new, nutrient-rich soils.
Detailed explanation-5: -Lichens are pioneers: they have the ability to settle on substrates that are very low in nutrients and can withstand extreme temperature and light conditions.