RNR 2101 Chapter : RNR 2101 Final Exam Study Guide
Document Summary
Primary production: productivity is influenced by , seasonality, precipitation, soil/water nutrients, photosynthesis is a rate the amount of c6h12o6. Nitrogen cycle: nitrogen key element in the porphyrin rings of chlorophyll and hemoglobin. It"s mobility in the soil may limit primary production: dinitrogen (n, or nitrogen gas, has an extremely strong triple bond between two elemental nitrogen molecules (n n). This fixing nitrogen (reducing from n2 to another form) requires energy. Nitrogen fixation: conversion of n2 gas into nitrate, nitrite or ammonium. N2 in the atmosphere is fixed by lightning, cyanobacteria, and some soil bacteria. Their dominance is not due to changes caused by pioneer species, but their ability to endure over time. An example may be old-field succession: inhibition: early successional species modify the environment to make it unsuitable for other species, lichens facilitate succession for later species by accumulating nutrients and physically breaking down rocks.
