Term
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Definition
| study of how organisms relate to one another and to their environments |
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Term
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Definition
| non-living elements of the environment |
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Term
| List 4 or more abiotic factors which are key in the environment. |
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Definition
-Temperature
-Water
-Sunlight
-Soil
-Wind
-pH |
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Term
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Definition
| conform to the environment in which they live, their bodies adopting the temperature, salinity and other aspects of their surroundings |
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Term
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Definition
| maintain constant internal temperature |
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Term
| List 2 or more morphological and behavioral changes endothermic animals may do to regulate their internal temperature. |
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Definition
Thick coats during winter (wolf’s fur 3x thick in winter)
Alter fat levels |
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Term
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Definition
| groups of individuals of the same species in one place |
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Term
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Definition
| area throughout which a population occurs |
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Term
| Briefly describe the 3 patterns of spacing within populations. |
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Definition
Random spacing = individuals do not interact strongly with one another; not common in nature
Uniform spacing = behavioral interactions, resource competition
Clumped spacing = uneven distribution of resources; common in nature |
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Term
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Definition
| collection of spatially divided subpopulations connected by gene flow |
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Term
| List two reasons why metapopulations may be at an advantage over a single population. |
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Definition
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Term
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Definition
| the quantitative study of populations |
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Term
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Definition
| average interval between birth of an individual and birth of its offspring |
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Term
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Definition
| correlated with generation time. Short generation time equals fast population growth rate, short life span |
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Term
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Definition
| determined by the numbers of individuals in a different age group |
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Term
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Definition
| group of individuals of the same age |
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Term
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Definition
| number of offspring produced in a standard time |
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Term
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Definition
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Term
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Definition
| percent of an original population that survives to a given age |
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Term
| What is a survivorship curve? |
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Definition
| expresses some aspects of age distribution |
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Term
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Definition
| complete life cycle of an organism |
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Term
| What is exponential growth (J-shaped population growth curve) |
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Definition
| applies to populations with no growth limits |
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Term
| What is logistic growth (S-shaped population growt curve)? |
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Definition
| applies to populations as they reach K |
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Term
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Definition
| symbolized by K, is the maximum number of individuals that the environment can support |
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Term
| List 2 or more things that may create a carrying capacity. |
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Definition
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Term
| What are density-dependent effects? |
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Definition
| factors that affect the population and depend on population size |
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Term
| What are density-independent effects? |
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Definition
| the rate of growth of a population at any instant is limited by something unrelated to the size of the population |
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Term
| Give an example of negative-feedback when population size increases |
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Definition
| reproductive rates decline mortality rates increase or both |
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Term
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Definition
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Term
| Define K-selected population |
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Definition
| adapted to thrive when population is near its carrying capacity |
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Term
| Is the human population following an exponential or logistic growth curve? |
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Definition
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Term
| Is the human population a K-selected or r-selected population? |
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Definition
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Term
| What is a population pyramid? |
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Definition
| a bar graph displaying the number of people in each age category |
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Term
| What is an ecological footprint? |
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Definition
| amount of productive land required to support an individual at the standard of living of a particular population through the course of his/her life |
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Term
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Definition
| a steady-state internal environment regardless of external environment |
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Term
| Define r-selected population |
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Definition
| selection favors individuals with the highest reproductive rates |
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