Bio 171 Exam 4| Questions With 100% Correct Answers | Verified

biomass - total mass of organisms in a given area or volume above ground biomass - total biomass above ground of living plant material primary productivity - amount of carbon fixed by photosynthesis per unit area per time species richness has the biggest effect disturbance - natural disaster, logging, etc affects the populations of interacting species that are independent of their densities tend to be unpredictable remove some organisms from habitat but provide opportunities for others categorized by intensity and frequency of event opens niches community is more prone to invasion after primary succession - appearance of a new habitat follows the destruction of the soil community slow process, starts from bare rock needs soil formation, so breaks down rock establish microbial community accumulation of organic matter and colonization of plans secondary succession - occurs after a disaster if soil community is still present first, pioneering species grows, then more species begin to be added to the community microbiome - all the microorganisms living in association with an organism