Two different types of succession—primary and secondary—have been distinguished. Primary succession occurs in essentially lifeless areas—regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier.
Species diversity refers to the number of different species in a community or ecosystem. So for example if you have an ecosystem and there are all different areas of that system like water, trees, and ground levels. obviously monkeys do not live in the water so, if you were to affect the water it would more than likely not affect the monkeys directly even though that water IS part of their ecosystem, but it will affect the other animals, living in that water. so if you were to take out a species in that water you are taking away a part of that ecosystem that makes it diverse.
To answer your question, yes the species diversity can decrease after a fire on a grassland.
Answer and Explanation:
Easter Island, a small island of around 64 square miles, has been a mystery for many scientists who study the changes on the past and current biodiversity abundance. According to research, this island used to be extremely diverse in species of fauna and flora, especially the latter. However, it is now composed of few species of invertebrates and little to almost no vegetation. This occured <u>due to the first colonizers</u> who rapidly deforested the region.
Research suggests that, apart from this deforestation, which caused the decline of wildlife species that depended on shrubs and palm trees, Polynesian colonisers introduced the Polynesian rat, which consumed almost all of the trees that were present in the island, leading to the absence of their regeneration.
