quiz #3 Flashcards
what is BOD
Biological Oxygen demand than measures the overall health of an aquatic ecosystem by measuring the amount of oxygen decomposers need to break down organic material
trophic level
determines the cycling of matter and energy through out a food web by measuring energy seeking behaviours of consumers
ruminant
consumer who has a specialized 4 chamber stomach to digest plant cellulose
albedo
how reflective an ecosystem is based on color and texture
nitrogen deposition
lightning and water deposit atmospheric nitrogen into the ground to be used by an ecosystem
ammonification
bacteria change atmospheric nitrogen into ammonium to be used by plants and animals
nitrifying bacteria
bacteria convert ammonium into usuable nitrates by plants
dentifying bacteria
bacteria convert usuable nitrates back into atmospheric nitrogen to keep the cycle going
phosphates
inorganic forms of phosphorus used in the bones and teeth of consumers and in producing leaves in plants
what three ways does water make its way into the atmostphere?
transpiration, evaporation, sublimation
what two ways does water join the water cycle following condensation and precipitation
run off, infiltration
Explain the fast cycling of carbon
photosynthesis and cellular respiration cycle carbon dioxide and oxygen to provide a recripical cycle and maintian atmospheric composition levels
explain the slow cycling of carbon
when carbon accumulates in the ecosystem through plant litter and decomposing organisms, there is a stored of unused carbon. this will not enter the carbon cycle again the stores are combusted (fires); forest fires or burning fossil fuels
List the marine biomes
coral reef, estuary, ocean
list the fresh water biomes
wetlands, marshes, ponds
list the desert biomes
arid, cold, coastal, semi-arid
list the forest biomes
tropical, temperate, boreal
list the grassland biomes
temperate, savannah
list the taigia biomes
alpine, arctic
what happens to solar energy as it reaches the earth?
absorbed, reflected, scattered
only 1-2% is used by terrestrial producers
biomass
weight of organism matter added to an ecosystem
usually the amount of vegetation added in an area over an yearly time period
consumptive water use
water is taken from its original source, used and returned elsewhere.
non-consumptive water use
water is taken from its original souce, used and sometimes treated, returned back to the original source
