Best answer: Why Most populations of species in an ecosystem are not evenly distributed?

Clumped patterns usually occur when resources are concentrated in small areas within a larger habitat or because of individuals forming social groups. At large spatial scales most organisms appear to have clumped distributions because their habitats are not uniformly distributed over wide areas.

Why is biodiversity not evenly distributed?

Biodiversity is unevenly distributed across the planet. A range of factors contribute to this distribution, including the global climatic gradient, the current and historical distribution of land masses, and geographical barriers, such as mountains.

Why do populations of species in an ecosystem vary?

As we discussed above, energy is constantly flowing through an ecosystem and chemical nutrients are continually being recycled. At higher levels of organization, organisms are dying and being born, populations are fluctuating in their numbers, and climate patterns are varying seasonally and in less predictable ways.

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Why are individuals not distributed equally within the geographic range of a population?

So if there is competition for resources, or even if there’s no competition, organisms are going to tend to go to where those resources are. … A loss of organisms will preferentially uh congregate together. So instead of seeing them distributed evenly, you’ll see them clumping together. These are the two major reasons.

Are species evenly distributed on the Earth?

An important second point is that life is not evenly distributed. There are ranges, habitats and distributions that are characteristic for each species on earth. … Mostly in the southern regions of the earth. So in nature, of course, they never mix, because they have different ranges.

Why species are distributed the way they are across the globe?

Within each habitat, a variety of biotic and abiotic factors act on individual species to shape birth, death, immigration, and emigration rates. … These factors and others act in a dynamic fashion to determine the location and persistence of species across the globe.

What three main factors that contribute to the uneven distribution of life on Earth?

There’s a set of conditions in that range that allows the organism to get its food, to reproduce, and do all the things that members of a given species have to do to survive in their habitat. Preferences are determined by three main factors: physical, biotic, and evolutionary.

What factors affect populations within an ecosystem?

Density-dependent factors include competition, predation, parasitism, and disease. Density-independent factors include natural disasters, temperature, human activity, and biological and physical characteristics of the organism.

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Does greater species diversity lead to greater stability in ecosystem?

Greater biodiversity in ecosystems, species, and individuals leads to greater stability. For example, species with high genetic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances, disease, and climate change.

Why is population dynamic?

Population dynamics are directly affected by dispersal through the immigration of individuals into populations and by the emigration of individuals out of populations. Much of what we understand about dispersal patterns, their causes and effects comes from mathematical models.

Why do most organisms rarely reach their biotic potential?

Organisms do not tend to fulfill their biotic potential because most species do not live under ideal environmental conditions. At some point, population growth will be hindered by predators, disease, changes in environment, a lack of available food, or a combination of these factors.

Why do most species have a clumped distribution?

Clumped patterns usually occur when resources are concentrated in small areas within a larger habitat or because of individuals forming social groups. At large spatial scales most organisms appear to have clumped distributions because their habitats are not uniformly distributed over wide areas.

Why do you think there are differences in the population density?

Explanation: Because, The global population distribution is unbalanced. There are few individuals in sparsely populated areas. Densely populated areas have a large number of inhabitants….

Why do species varies in location and distribution?

Both physical (temperature, rainfall) and biotic (predators, competitors) factors may limit the survival and reproduction of a species, and hence its local density and geographic distribution.

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Where are most species distributed?

Clumped distribution, also called aggregated distribution, clumped dispersion or patchiness, is the most common type of dispersion found in nature.

What is an advantage of a random population distribution What is a disadvantage?

random distribution advantages and disadvantages. advantage: easy to evade predators. disadvantage: competition if one organism is too close to another. uniform distribution advantage and disadvantages. advantage: more food available, less competition.