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50 Cards in this Set
- Front
- Back
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Ecology |
The study of how living things react with each other and their enviorment |
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Organisms, basic needs |
Individual living things, energy and matter |
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Abiotic factors |
Non living aspects of enviorment: sunlight, soil, temperature, water |
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Biotic factors |
Living aspects of enviorment: organisms of the same and different species |
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Ecosystem |
Unit of nature and focus of study in biology, consists of biotic and abiotic factors in an area, such as a dead log |
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Niche |
Refers to a role of a species in its ecosystem, two big factors: food it eats, how food is obtained Granivore |
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Habitat |
The physical enviorment in which a species lives and is adapted |
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Competitive Exclusion Principle |
When 2 species try to occupy the same niche. Only one may be in this niche SO IT IS WAR |
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Producers |
Organisms that produce food for themselves and other organisms, also autotrophs |
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Photoautotrophs |
Use energy from sunlight to make food by Photosynthesis |
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Chemoautotrophs |
Use energy from chemicals to make food by chemosynthesis: bacteria |
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Consumers |
They get their food from other organisms, heterotrophs |
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Herbivores |
Consume producers, plants and algae |
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Carnivores |
Consume animals |
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Omnivores |
Both plants and animals |
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Decomposers |
Break down wastes and release inorganic molecules |
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Scavengers |
Eat soft tissue of dead animals |
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Detritivores |
Consume poop and dead leaves, dung beetles, millipedes, such as catfish |
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Saprotrophs |
They take what's left, usually fungi and protazoa |
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Detritus |
Composition of dead keaves, poop and other stuff |
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Food chain |
Represents pathway by which energy and matter flow through an ecosystem |
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Food web |
Multiple pathways through which energy and matter flow through an ecosystem |
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Tropic levels |
The feeding position in a food chain or web |
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Gimme the tropic levels |
Producer.makes it's own food Primary.consumes producers Secondary consumer. Eats primary Tertiary cinsumer.eats secondary |
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What happened to the 90% of missing energy |
Used for metabolic process a or given to enviorment through heat |
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Biomass |
total mass of organisms at tropic level |
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Predation |
Member in one species eats another member |
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Keystone species |
Species that holds an important role in its community |
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Competition |
A relationship between organisms in which both members strive for the same resources in the same place. Intraspecific: same species Interspecific: different species |
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Specialization |
When one of the competing species evolves adaptions |
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Symbiosis |
A close relationship in which one member benefits or more |
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Mutualism |
Both benefit ++ |
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Commensalism |
One benefits, one is unaffected +0 |
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Parasitism |
One benefits, one is harmed +- |
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Population |
The number of a certain species in a certain space |
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Population size |
The number of individuals in a population |
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Population density |
The number of a species in population per unit of area or volume |
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Population distribution |
Describes how a population is spread across their habitat |
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Immigration |
Moving into an area |
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Emmegratiom |
Moving out of an area |
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Population growth rate |
How fast a population changes in size over time Births deaths immigration emigration |
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Dispersal |
Offspring moving away from parents |
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Biodiversity |
The variety of life and it's process |
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Species diversity |
The number of different species in a particular ecosystem or on earth |
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Genetic diversity |
The differences among individuals or population |
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Ecosystem diversity |
The many types of functional units formed by living communities interacting with their enviorment |
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Things bad that we did |
Pollution, overpopulation, over harvesting, exotic species, global climate change |
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Biome |
A large community of plants and animals that occupy distinct region |
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Levels of organization |
Individual, population, community, ecosystem, biome, biosphere |
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Biosphere |
All regions that can support life |
