Intraspecific competition C.
This is one of many natural feedback loops that help control the size of populations. It is food for a number of vertebrate predators, including the stoat a short-tailed weasel , the arctic fox, the snowy owl, and the long-tailed skua a seabird.
Density-independent factors, such as environmental stressors and catastrophe, are not influenced by population density change. The amount of precipitation in an environment is also important for plants. Creature Cast.
They found that when squirrel densities were high, territoriality relegated some females to poor quality territory, which in turn reduced their reproductive success.
Density dependent factors are those factors whose effect on a population is determined by the total size of the population. Saltwater Science.
This content is currently under construction. Lead Editor: Related Content. Student Voices. Maintaining a correct body temperature is vitally important for almost all organisms in order to perform metabolic functions effectively.
Food resources are plentiful B. Because of this, exponential growth may apply to populations establishing new environments, during transient, favorable conditions, and by populations with low initial population density.
D is correct. Biotic defines all the living bacteria, plants and animals within it. Retrieved from https: Change LearnCast Settings.
Too much rainfall may also flood the soil, reducing the amount of oxygen available to the roots, causing root loss or leaving the plants susceptible to fungal damage. Density dependant factors may also affect population mortality and migration. Within tropical ecosystems, the Cordyceps fungus is a prominent parasite, and has many strains specialized on different species.