Age-class
Age-class
Age-class (pronunciation: /ˈeɪdʒ klɑːs/) is a term used in various fields of study, including biology, ecology, and anthropology. It refers to a group of individuals of a similar age within a population or species.
Etymology
The term "age-class" is derived from the English words "age", meaning the length of time that a person or thing has existed, and "class", referring to a group of people or things sharing common characteristics.
Related Terms
- Cohort: In biology and ecology, a cohort refers to a group of individuals of the same age within a population. It is often used interchangeably with age-class.
- Age structure: This refers to the distribution of individuals of different ages within a population. It is a crucial factor in population dynamics.
- Life table: A life table, also known as a mortality table, is a statistical model used to represent mortality rates and survival probabilities for different age-classes within a population.
- Population dynamics: This is the study of how population sizes change over time and space, influenced by factors such as birth rates, death rates, and migration. Age-class is a key factor in population dynamics.
Usage in Different Fields
In biology and ecology, age-class is used to study population dynamics and life history strategies. It helps in understanding the survival rates, reproductive rates, and mortality rates of different age groups within a population.
In anthropology, age-class systems are often used in traditional societies to organize social roles and responsibilities. Individuals of the same age-class often share similar roles and undergo similar rites of passage.
External links
- Medical encyclopedia article on Age-class
- Wikipedia's article - Age-class
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