Several things could cause it. A decrease in any predator that feeds on mice will cause an increase in mice population because less of them will be eaten by other animals. An increase in the mice food supply could cause an increase in population too, especially if lack of food was the main limiting factor of the mice population. In very rare circumstances, additional mice could be brought in from other parts of the world by humans. There are some non-native fish living in lakes because someone put some in there and they started to breed.
there would be less nutrients for the plant.
The increase in pickerel population may lead to a decrease in the population of smaller fish species that the pickerel prey upon. This can create a shift in the ecosystem dynamics, impacting the overall biodiversity of the lake. Additionally, the rise in pickerel numbers could affect the availability of food resources for other top predators in the habitat.
High concentrations of ethanol can cause the yeast population to enter the death phase by disrupting cellular functions and metabolic processes, ultimately leading to cell death.
population, or habitat constrictions
Environmental changes such as availability of resources, changes in predation pressure, or disease outbreaks can affect the carrying capacity of a population by either increasing or decreasing the amount of resources available for the population to survive and reproduce.
Any cause that reduces reproductive success in a proportion of a population, potentially exerts evolutionary pressure or selection pressure. So if a habitat changes such that certain traits lead to more or less offspring the population as a whole will have an increase in the frequency of the trait that leads to having more offspring.
The lynx population might increase due to abundant prey availability, reduced threats from predators or disease, successful conservation efforts, and suitable habitat conditions for breeding and raising offspring.
It might increase if humans do not kill them
population, or habitat constrictions
if there is too less population then the natural population will increase and there might be an end to the human population.
This depends on the organisms habitat and the surroundings of the habitat, for example a zoo habitat is well cared for and safe. A rainforest habitat can be in grave danger because of the large population of human beings on the earth. Every habitat is different.
If the population do not or can not conform to the normalities of that society.
Availability of food.
If by people, then the animals might be hunted or lose their habitat. Loss of habitat causes include deforestation and forest fires. For plants, they might be demanded too much.
Ecosystems
It will increase very much
It will increase very much