Ch. 5 Vocab Flashcards
Sponge-like regions of rock and soil that hold ground water.
Aquifer
Nutrient Cycles.
Biogeochemical Cycles
Transitional zone where ecosystems meet.
Ecotone
Too many nutrients in a water system.
Eutrophication
Energy captured by autographs through photosynthesis.
Gross Primary Productivity
Energy that is stored in biomass after cellular respiration
Net Primary Productivity
feedback loop that drives the system further to one extreme.
Positive feedback Loop
Feedback loop that helps stabilize a system.
Negative Feedback Loop
Water found underground beneath layers of soil.
Ground Water
Tendency of a system to maintain constant stable conditions.
Homeostasis
Subpopulations with members who move between them.
Metapopulation
Lightning or nitrogen-fixing bacteria combine nitrogen with hydrogen to form ammonium.
Nitrogen Fixation
Bacteria that cant take in nitrogen to convert it to ammonia
Nitrogen Fixing Bacteria
Temporary storage area for nutrients.
Reservoir
A reservoir that accepts more material that it releases.
Sink
