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Ecology
First Week
| Term | Definition |
|---|---|
| What is evolution? | The process of change that allows and organism's to adapt to their environment. |
| What are emergent properties? | Properties that are not present at the preceding level. |
| What is a Systems biology? | An approach that attempts to model the dynamic behavior of whole biological systems based on a study of the interactions among the system's parts. |
| What does life require? | -Energy (to carry out everyday functions) -Transfer -Transformation |
| What is an eukaryotic cell? | Subdivided by internal membranes into various membrane-enclosed organelles. |
| Biotic | living things that shape an ecosystem. Ex: Pathogens, parasites, predators, competitors, and food availability. |
| Abiotic | non-living chemical and physical factors in the environment, which affect ecosystems EX: The amount and variability of precipitation directly determines where red kangaroos live. |
| Dispersal | The movement of individuals or gametes away from their area of origin or from centers of high population density. |
| Density of a population | Is the number of individuals per unit area or volume |
| Dispersion | Is the pattern of spacing among individuals within the boundaries of the population Ex: Massive white birds aligned picture |
| Mark recapture method | You grab an animal and put a tractor and release him back into its environment. |
| emigration | the movement of individuals out of a population and into other locations |
| Demography | the study of the vital statistics of populations and how they change over time. |
| cohort | a group of individuals of the same age, from birth until all of the individuals are dead |
| Density Independent | A birth rate or death rate that does NOT change with population density |
| Density Dependent | A death rate that rises as population density rises |
| Population Dynamics | Such population fluctuations from year to year or place to place |
| metapopulation | When a number of local populations are liked |
| Species Diversity | The variety of different kinds of organisms that make up the community |
| Species Richness | The number of different species in the community. |
| Relative Abundance | The proportion each species represents of all individuals in the community. |
| Invasive Species | Organisms that become established outside their native range. |
Created by:
Sarai0918
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