Some examples of limiting factors are biotic, like food, mates, and competition with other organisms for resources. Others are abiotic, like space, temperature, altitude, and amount of sunlight available in an environment. Limiting factors are usually expressed as a lack of a particular resource.

There are many common density independent factors, such as temperature, natural disasters, and the level of oxygen in the atmosphere. These factors apply to all individuals in a population, regardless of the density.

Density-independent factor, also called limiting factor, in ecology, any force that affects the size of a population of living things regardless of the density of the population (the number of individuals per unit area).

Density-dependent factors have varying impacts according to population size. Density-independent factors are not influenced by a species population size. All species populations in the same ecosystem will be similarly affected, regardless of population size. Factors include: weather, climate and natural disasters.

The category of density independent limiting factors includes fires, natural disasters (earthquakes, floods, tornados), and the effects of pollution. The chances of dying from any of these limiting factors don’t depend on how many individuals are in the population.

Some common examples of density-dependent limiting factors include:

• Competition within the population. When a population reaches a high density, there are more individuals trying to use the same quantity of resources.
• Predation.
• Disease and parasites.
• Waste accumulation.

Density dependent factors can only affect a population when it reaches a certain density. For example: natural disasters, temperature, sunlight, human activities, physical characteristics and behaviours of organisms affect any and all populations regardless of their densities.

Answer. factors could change the density of any population: climate change, habitat reduction, increasing of populationa nd others.

Definition. noun. A limiting factor of a population wherein large, dense populations are more strongly affected than small, less crowded ones.

Density independent factors can affect a population no matter what it’s density is. For example: natural disasters, temperature, sunlight, human activities, physical characteristics and behaviours of organisms affect any and all populations regardless of their densities.

Humans have exceeded density-dependent limits on population by enacting various environmental changes to accommodate our needs for hygiene, shelter, and food.

Examples of density dependent factors are food, shelter, predation, competition, and diseases while examples of density independent factors are natural calamities like floods, fires, tornados, droughts, extreme temperatures, and the disturbance of the habitat of living organisms.

What do all the density-independent factors have in common? They are all environmental factors such as rainfall.

Density-dependent factors are most often biotic variables. Biotic variables are all of the living organisms within an ecosystem. Abiotic variables, all of the non-living things in an ecosystem, such as weather, natural disasters, and sunlight, usually affect a population in the same way, regardless of the density.

Density-dependent factors include competition, predation, parasitism and disease.

The right option is; birth rate and immigration Increased birth rate and increased immigration rate can both cause a population to increase.

The factor that is most likely to have a density-independent influence on population growth is Extreme weather conditions. Density-independent factors such as weather and climate, exert their influences on population size regardless of the population’s density.

Clear-cutting of the rainforest means automatic destruction of the habitat of the poison dart frog’s population, no matter the population size. Hence, clear-cutting of the rainforest is considered as the density-independent factor in this case.

Density-independent regulator of population growth of poison dart frogs in the rainforest will be affected by clear cutting the rainforest because if the animal will loss its habitat and the required condition to live which is rainforest, it will unable to survive which will lead to increase in death rates of poison …

Population Distribution Population density just represents the average number of individuals per unit of area or volume. Often, individuals in a population are not spread out evenly. Population distribution describes how the individuals are distributed, or spread throughout their habitat.

The density dependent limiting factor is the factor which affects the population on the basis of the density. For example, the effect of the disease will be more profound if the population is large, but in small populations few members will get infected.

Density-dependent limiting factors cause a population’s per capita growth rate to change—typically, to drop—with increasing population density. One example is competition for limited food among members of a population. Density-independent factors affect per capita growth rate independent of population density.