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AP Environmental Science: Ecology :) Flashcards

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7406389366EcologyThe branch of biology that deals with the relations of organisms to one another and to their physical surroundings. (The study of connections in nature)0
7406389367EcosystemA community where populations of different species interact with one another and with their nonliving environment of matter and energy.1
7406389368PopulationA group of individuals of the same species that live in the same area.2
7406389369SpeciesA group of organisms that resemble one another in appearance, behavior, chemistry, and genetic makeup.3
7406389370HabitatAn environment that provides an organism or species with the means to live, grow, and reproduce. (Can be as large as the ocean or as small as animal's intestine)4
7406389371Abiotic factorsNon-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.5
7406389372Biotic factorsThe living factors in the environment such as producers, consumers, and decomposers.6
7406389373nicheThe place or function of a given organism within its ecosystem7
7406389374Fundamental nicheentire set of conditions under which an animal (population, species) can survive and reproduce itself.8
7406389375Realized nichethe part of fundamental niche that an organism occupies as a result of limiting factors present in its habitat.9
7406389376Limiting factorsenvironmental conditions that limit the growth, abundance, or distribution of an organism or a population of organisms in an ecosystem. ... also competition between individuals of a species10
7406389377Carrying Capacitythe number of people, other living organisms, or crops that a region can support without environmental degradation.11
7406389378Population dynamicsthe size and age composition of populations as dynamical systems, and the biological and environmental processes driving them (such as birth and death rates, and by immigration and emigration).12
7406389379S & J population curvesS-shaped growth curve, A pattern of growth in a new environment, the population density of an organism increases slowly initially, in a positive acceleration phase; then increases rapidly, approaching an exponential growth rate as in the J-shaped curve; but then declines13
7406389380Communitythe study of the interactions between species in communities on many different scales14
7406389381Respirationa process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.15
7406389382PhotosynthesisA process used by plants and other autotrophs to capture light and 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. 6CO2 + 6H2O + light --> C6H12O6 + 6O216
7406389383Trophic leveleach of several hierarchical levels in an ecosystem, comprising organisms that SHARE the same function in the food chain and the same nutritional relationship to the primary sources of energy17
7406389384Ecological Pyramidsgraphical representation designed to show the biomass or bio productivity at each trophic level in a given ecosystem.18
7406389385Productivityhe rate of production of new biomass by an individual, population, or community; the fertility or capacity of a given habitat or area.19
7406389388Gross primary productivitythe total amount of biomass produced via photosynthesis over a given amount of time20
7406389389Net primary ProductivityThe energy captured by producers in an ecosystem minus the energy producers respire21
7406389393BiomesBroad, regional types of ecosystems characterized by distinctive climates and soil conditions and distinctive kinds of biological communities adapted to those conditions.22
7406389394BiosphereAll of the Earth's ecosystems, or the global ecosystem where all life in interconnected.23
7406389399Salinitythe concentration of dissolved salts in water24
7406389401Species diversitynumber of different species that are represented in a given community25

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