Term
| What is population ecology? |
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Definition
| It is concerned with changes in population size and factors that regulate populations over time and helps explain the biodiversity of an environment |
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Term
| Ecologists learn the structure and dynamics of natural populations in order to... |
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Definition
| Develop sustainable food sources, assess impact of human activities, balance human needs through conservation |
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Term
| The study of how and why populations change is? |
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Definition
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Term
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Definition
| A group of individuals of a single species that occupy the same general area |
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Term
| Population dynamics is the interactions between |
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Definition
| biotic and abiotic factors |
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Term
| Immigration versus emigration |
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Definition
| Increase in population versus decrease in population |
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Term
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Definition
| the number of individuals of a species per unit area or volume |
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Term
| Important population variables are? |
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Definition
| Density and dispersion patterns |
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Term
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Definition
| Refers to the way the population's individuals are spaced within their area |
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Term
| Define the difference between clumped, uniform, random patterns of dispersion |
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Definition
| Clumped - grouped in patches, uniform - equally spaced, random - spaced in an unpredictable way |
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Term
| What do life tables track? |
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Definition
| Survivorship over the life span of individuals in a population |
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Term
| What are survivorship curves? |
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Definition
| They plot the proportion of individuals alive at each age |
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Term
| What type of models predict patterns of population growth? |
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Definition
| Idealized models such as the exponential growth model |
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Term
| The exponential growth model occurs based on what equation and what factors? |
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Definition
| Rate of population increases under ideal conditions, using the equation G = rN where G is growth rate, N is the population size, r is the per capita rate of increase |
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Term
| Rabbit problem in Australia, solutions were? |
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Definition
| Introduce Myxomatosis (virulent pathogen) & growth rate not as fast to kill all rabbits |
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Term
| What is the Logistic growth model |
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Definition
| Takes into account of limiting factors like environmental factors that restrict population growth; G = rN(K-N)/K |
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Term
| Population growth slows and ceases as what? |
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Definition
| Population density increases; causes decrease in birth rate, increase in death rate or both |
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Term
| Some populations have boom and bust cycles because? |
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Definition
| Food storages, predator-prey interactions |
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Term
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Definition
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Term
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Definition
| Series of events from birth to death |
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Term
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Definition
in exponential
r = increase
in logistic
r = growth
k = carrying capacity |
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Term
| Human population continues to increase, is the growth rate slowing or increasing? |
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Definition
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Term
| Where is the human population increase primarily? |
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Definition
| 95% of the increase is in developing nations |
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Term
| What is an ecological footprint? |
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Definition
| A measure of resource consumption |
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