survivorship curve
Graph showing the number of survivors in different age groups for a particular species.
Subject:
Chapter 9 - Population Dynamics, Carrying Capacity, and Conservation Biology
Sexual reproduction
Reproduction in organisms that produce offspring by combining sex cells, or gametes (such as ovum and sperm), from both parents. This produces offspring that have combinations of traits from their parents. Compare asexual reproduction.
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S-shaped curve
Leveling off of an exponential, J-shaped curve when a rapidly growing population exceeds the carrying capacity of its environment and ceases to grow.
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Reproductive potential
See biotic potential.
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Reproduction
Production of offspring by one or more parents.
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r-strategists
See r-selected species.
Subject:
r-selected species
Species that reproduce early in their life span and produce large numbers of usually small and short-lived offspring in a short period of time. Compare K-selected species.
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population size
Number of individuals making up a population's gene pool.
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Population dynamics
Major abiotic and biotic factors that tend to increase or decrease the population size and age and sex composition of a species.
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Population distribution
Variation of population density over a particular geographic area. For example, a country has a high population density in its urban areas and a much lower population density in rural areas.
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