Populations and ecological relationships – basic principles
How it works
A population comprises the individuals of the same species that live at the same time in a certain habitat and belong to the same reproductive community. Not every individual must itself be capable of reproduction. Ecological relationships describe interactions between organisms and their environment, for example competition, predator-prey relationships, symbiosis and parasitism. Population size is influenced by births, deaths, immigration and emigration. Biotic factors such as food, competition or enemies as well as abiotic factors such as temperature or water availability determine the living conditions and the development of populations.
Populations consist of individuals of the same species that live in an area at the same time and belong to the same reproductive community. Their size and development are influenced by biotic and abiotic environmental factors as well as by interactions with other species.
An example
What is meant by a population in the biological sense?
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Biology. The topic assignment may vary by federal state.