chapter 25.1-.2, 26.2-.3, 48 Flashcards
Carbon cycle
the intricately linker network of biological and physical processes that shuttles carbon among rocks, soil, oceans, air and organisms
Correlation
the co-occurrence of two event or processes; correlation does not imply causation
Causation
a relationship in which one event leads to another
Reservoirs
a supply or source of a substance. reservoirs of carbon, for example, include organisms, the atmosphere , soil, the oceans, and sedimentary rocks
Biomass
the total mass of organisms in a given area or volume
Fluxes
the rate at which a substance, for example carbon, flows from one reservoir to another
Biomineralization
the precipitation of minerals by organisms, as in the formation of skeletons
Greenhouse gas
a gas in the atmosphere that allows incoming solar radiation to reach the Earth’s surface, but absorbs radiation re-emitted as heat, trapping it in the atmosphere and causing the temperature to rise
Oxygenic
producing oxygen
Aerobic
utilizing oxygen
Anoxygenic
not producing oxygen; anoxygenic photosynthetic bacteria do not gain electrons from water and so do not generate oxygen gas
Assimilation
the process by which organisms take up nutrients from the environment
Nitrogen fixation
the process in which nitrogen gas is converted into ammonia, a form biologically useful to primary producers
Nitrification
the process by which chemoautotrophic bacteria oxidize ammonia to nitrite and then to nitrate
Denitrification
the process in which some bacteria use nitrate as an electron acceptor in respiration
Anammox
anaerobic ammonia oxidation, energy metabolism in which ammonium ion is oxidized by nitrite, yielding nitrogen gas as a by-product
Biogeochemical cycles
the cycling of carbon and other biologically important elements through the biosphere
Biomes
the distinctive and stable assemblage of species found over broad region of Earth; terrestrial biomes are each recognized by their distinctive vegetation
Coriolis effect
In physics, the Coriolis force is an inertial force (also called a fictitious force) that acts on objects that are in motion relative to a rotating reference frame. In a reference frame with clockwise rotation, the force acts to the left of the motion of the object. In one with anticlockwise rotation, the force acts to the right.
Evapotranspiration
Evapotranspiration (ET) is the sum of evaporation and plant transpiration from the Earth’s land and ocean surface to the atmosphere. Evaporation accounts for the movement of water to the air from sources such as the soil, canopy interception, and waterbodies. Transpiration accounts for the movement of water within a plant and the subsequent loss of water as vapor through stomata in its leaves.
Exapotranspiration ratio
Transpiration / evapotranspiration ratio is 0.757. and evaporation / transpiration ratio is 0.43. Thus, transpiration is the key process not. only in biomass production, but even in Earth´s temperature stabilisation.
Latitudinal diversity gradient
the increase in species diversity from the poles to the equator
Rain shadow
the area on the lee side of mountains, where air masses descend, warming, and taking up water vapor; as a result, lands in the rain shadow are arid
Topography
the physical features of Earth