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Nutrient use

For 330 Nutrient use vocab, many from Chapin et al 2011

TermDefinition
Active transport Energy-requiring transport of ions or molecules across a membrane against an electrochemical gradient.
Charge density Charge per unit hydrated volume of the ion.
Diffusion Net movement of molecules or ions along a concentration gradient due to their random kinetic activity.
Endodermis Layer of suberin-coated cells between the cortex and xylem of roots; water penetrates this layer only by moving through the cytoplasm of these cells.
Herbivory Consumption of plants by animals.
Mass flow Bulk transport of solutes due to the movement of soil solution; synonomous with bulk flow.
Mineralization Conversion of carbon and nutrients from organic to inorganic forms due to the breakdown of litter and soil organic matter.
Mycorrhizae Symbiotic relationship between plant roots and fungal hyphae, in which the plant acquires nutrients from the fungus in return for carbohydrates that constitute the major carbon source for the fungus.
Nutrient concentration 'The mass of a nutrient in a given mass of a tissue or volume of solution.
Nutrient content The amount of a nutrient contained by a tissue or soil mass.
Nutrient uptake Nutrient absorption by plant roots; synonomous with nutrient acquisition.
Nutrient use efficiency 'Growth per unit of plant nutrient; litterfall ratio of biomass to nutrients.
Resorption Withdrawal of nutrients from tissues during their senescence.
Rhizosphere Zone of soil that is directly influenced by roots.
Root interception Root growth causes contact with nutrients that were not previously available for uptake.
Senescence Programmed breakdown of plant tissues.
Turnover Replacement of a pool; ratio of the flux to the pool size.
Created by: mdcoleman
 

 



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