Ecology

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by laurenquant
Last updated 5 years ago

Discipline:
Science
Subject:
Ecology

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Ecology

Ecology

UnitOne~Unit Two~Unit Three

ecology: scientific study of interactions among organisms and between organisms and their enviornmentecosystem: all the organisms that live in a place, together with their nonliving enviornmentbiome: a group of ecosystems that share similar climates and typical organismsbiotic factor: any living part of the enviornment with which an organism might interactabiotic factor: physical, or nonliving, factor that shapes an ecosystem

VocabularyWords

biosphere: part of Earth in which life exists including land, water, and air or atmospherespecies: a group of similar organisms that can breed and produce fertile offspringpopulation: group of individuals of the sam species that live in the same areacommunity: assemblage of different populations that live together in a defined area

VocabularyWords

Autotroph: organism that is able to capture energy from sunligh or chemicalsPrimary Producer- First producer of energy-rich compounds that are later used by other organisms. Photosynthesis- Process used by plants and other autotrophs to capture light energy and use it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches. Chemosynthesis- Process in which chemical energy is used to produce carbohydrates. Heterotroph- Organism that obtains food by consuming other living things; also called a consumer. Consumer-Organism that relies on other organisms for its energy and food supply; also called a heterotroph. Detritivore- Organism that feeds on plant and animal remains and other dead matter.

Biotic Factors: biological influences; bullfrog eats algae as a tadpole, then eats insects as an adultAbiotic Factors: physical componenets; sunlight, heat, precipitation, humidity, exct.

Modern ecologists use three methods in their work:observation, experimentation, and modeling

VocabularyWords

Food Chain- A series of steps in an ecosystem in which organisms transfer energy by eating and being eaten. Phytoplankton- Photosynthetic algae found near the surface of the ocean. Food Web- Network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem. Zooplankton- Small free-floating animals that form part of plankton. Trophic Level- Each step in a food chain or food web. Ecological Pyramid- Illustration of the relative amounts of energy or matter contained within each trophic level in a given food chain or food web. Biomass- Total amount of living tissue within a given trophic level. biogeochemical cycle- process in which elements, chemical compounds, and other forms of matter are passed from one organism to another

VocabularyWords

Nutrient- chemical substance that an organism needs to sustain lifeNitrogen Fixation- process of converting nitrogen gas into nitrogen compounds that plants can absoarb and useDenitrification- process by which soil bacteria convert nitrates into nitrogen gasLimiting Nutrient- single essential nutrient that limits productivity in an ecosystemCarnivore- Organism that obtains energy by eating animals. Herbivore- Organism that obtains energy by eating only plants. Scavenger- Animal that consumes the carcasses of other animals. Omnivore- Organism that obtains energy by eating both plants and animals. Decomposer- Organism that breaks down and obtains energy from dead organic matter.

VocabularyWords

Biogeochemical Cycle

By:Lauren Quant


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