CH6: ECOSYSTEMS AND BIOMES Flashcards
organisms with close degree of genetic relatedness through a shared ancestry
Species
all members of a given species living “together” at the same time
Population
all species living “together” at the same time
Biological Community
a biological community and its environment (biotic and abiotic factors)
Ecosystem
the amount of energy (accumulated material) and other biomass in a given area over a given time
the economy of the biosphere
how much stuff is available in this ecosystem to be utilized
Productivity
autotrophs, plants and photosynthetic bacteria, lowest trophic level
Primary Producers
primary consumers, herbivores, feed on plants
Secondary Producers
secondary consumers, carnivores, feed on herbivores
Tertiary Producers
tertiary consumers, top carnivores, feed at the apex of the food web
Quaternary Producers
animals that feed at various trophic levels
Omnivores
where does most energy come from?
the sun (solar energy)
total amount of fixed carbon
Gross Primary Production
the amount left to support other trophic levels (GPP - growth and maintenance respiration by plants)
amount of left over
Net Primary Production
