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9 terms

ecology 3-3

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biogeochemical cycle
process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another
evaporation
the process by which water changes from liquid form to an atmospheric gas
transpiration
evaporation of water from a plant's leaves
nutrient
chemical substance that an organism requires to live
nitrogen fixation
process of converting nitrogen gas into ammonia
denitrification
conversion of nitrates into nitrogen gas
primary productivity
rate at which organic matter is created by producers in an ecosystem
limiting nutrient
single nutrient that either is scarce or cycles very slowly, limiting the growth of organisms in an ecosystem
algal bloom
an immediate increase in the amount of algae and other producers that results from a large input of a limiting nutrient