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If a pond shrinks in size what effect will this have on the population density of the ponds minnow species?
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The effect of human disturbance on animal population is?
Density independent
if the population species of a given area is doubled,what effect would this have on the resources of the community?
If the population species of a given area is doubled,what effect would this have on the resources of the community?
What are the influencing factor of wetland?
Density-dependent limiting factor: A limiting factor whose effects depend on the size of the population depend on population density. The less dense the population, the less severe the effect of the limiting factor. Examples: Predation and disease Density-independent limiting factor: A limiting factor that has the same effect on a population regardless of its population density. Examples: Natural disasters and climate
Most density-dependent factors that affect population growth are?
competition for resources, predation, disease, and parasitism. These factors tend to have a stronger effect on population growth as population density increases.
How does the amount of available food effect a species?
The amount of food determines the population of a species. Less food equals fewer members of the species, and more food means a greater population of a species can be supported.
A genetic change which can effect a species fitness?
evolution within a species. the allele frequencies in a gene pool of a population
What effect do keystone species have on an eccosystem?
A, they keep the populations of species balanced. Apex
What is a density independent regulatory factor?
A density-independent regulatory factor is an environmental factor that influences population size or growth without being affected by the population density. These factors can include natural disasters like floods or droughts, temperature changes, or other abiotic factors. They have the same effect on population size regardless of the population's density.
How limiting factors may affect population density?
Population density effects population size through many different factors: predation, spread of disease, competition for resources, and parasites. As such, it has a powerful effect on the carrying capacity of an environment.
When a species becomes better adapted to life on land what is the effect on their populations?
The population increases.
What are the similarities between density-dependent factors and density- independent factors?
Density dependent factors are factors that depend of the population (density). Such as food, water, and space Density Independent factors are factors that the population (density) depends on. Such as weather, natural disasters and random occurances.
What is genic drift?
Genetic drift is change in allele frequencies due to random chance events. Two types are the Founder effect and the Bottleneck effect. The founder effect is when a subset of a population goes to a new are where there are no other of that same species. The bottleneck effect is when a large population is reduced to a small population. Genetic drift decreases variation in a population and has a greater effect on a smaller population than a larger one.
