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A benefit of a specialist species is that because the species has a more clearly defined niche, this reduces competition from other species. On the other hand, generalist species, by their nature, cannot realize as much resources from one niche, but instead find resources from many. Because other species can also be generalists, there is more ...
For example, trees could differentiate their niche if they are consumed by different species of specialist herbivores, such as herbivorous insects. If a species density declines, so too will the density of its natural enemies, giving it an advantage. Thus, if each species is constrained by different natural enemies, they will be able to coexist ...
The polymorphic snail species have different heritable features such as size and shape depending on the habitat they occupy e.g. bare cliffs, boulders and barnacle belts. [42] Phenotypic evolution in these snails can be strongly attributed to different ecological factors present in their habitats.
The Bale Mountains vervet monkey is a dietary specialist with African alpine bamboo (Yushania alpina) making up as much as 77% of its diet. [7] This makes the species unique in the genus Chlorocebus as the other five species are dietary generalist species. [2]
A genetic isolate is a population of organisms that has little to no genetic mixing with other organisms of the same species due to geographic isolation or other factors that prevent reproduction. Genetic isolates form new species through an evolutionary process known as speciation. All modern species diversity is a product of genetic isolates ...
r-selected species are those that emphasize high growth rates, typically exploit less-crowded ecological niches, and produce many offspring, each of which has a relatively low probability of surviving to adulthood (i.e., high r, low K). [10] A typical r species is the dandelion (genus Taraxacum).
As habitat destruction of an area occurs, the species diversity offsets from a combination of habitat generalists and specialists to a population primarily consisting of generalist species. [3] Invasive species are frequently generalists that are able to survive in much more diverse habitats. [ 44 ]
A population consists of individuals of the same species that live, interact, and migrate through the same niche and habitat. [ 49 ] A primary law of population ecology is the Malthusian growth model [ 50 ] which states, "a population will grow (or decline) exponentially as long as the environment experienced by all individuals in the ...