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Description
Flashcards by Muriel King, updated more than 1 year ago
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Created by Muriel King
over 7 years ago
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Copied by Muriel King
over 7 years ago
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| Question | Answer |
| What is population growth generally limited by? | Mortality, and reproduction |
| Biotic Potential | Unconstrained biological reporduction |
| What three things are required to produce a mathematical model of population growth? | Number of individuals of each population, number of offspring that each population can produce, time |
| N, r, t | N(Number of individuals, r(number of offspring per adult, t(number of time steps into the future) |
| Reproduction is | CONTINUOUS |
| Carrying capacity | The number of plants or animals that can be supported by the environment without depleting the available resources |
| overshoot | When a population exceeds the carrying capacity of the environment and death results from a scarcity of resources |
| Population crash or dieback | A rapid die back in the population to a level below the carrying capacity |
| Species that are able to overcome undpredictable environmental conditions or exploit new ones | R-selected species |
| S-Shaped population growth also known as | Logistic growth |
| Species that are adapted to the environment which stays generally the same for a long period of time | K-Selected species |
| Density dependent factor | Mechanisms of population control change as the density of the population changes, generally the living things of ecosystems(predation, disease, crowding and stress, paratism |
| Interspecific interactions | between species |
| Intraspecific interactions | within a species |
| Density independent factors | Some factors operate independently of how many individuals are in the population (fire, drought, climate, weather, landslides, floods) |
| Metapopulations | A group of populations that are separated by space but consist of the same species |
| Demographic bottleneck | A few members of a species survive a catastrophic event such as a natural disaster or uncontrolled harvest |
| Founder effect | few individuals start a new population |
| Inbreeding depression | Reduced fitness in a given population as a result of breeding related individuals |
| Minimum viable population | the number of individuals needed for long term survival of rare or endangered species |
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