Lesson 32 Mineral Cycling - Alaska Geobotany Center
Lesson 32 Mineral Cycling - Alaska Geobotany Center
Lesson 32 Mineral Cycling - Alaska Geobotany Center
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Biogeochemistry<br />
• Refers to the transfer or flux of materials back and forth between living<br />
and nonliving components of the biosphere.<br />
• Nutrient <strong>Cycling</strong> is the movement of the materials that are essential<br />
to organisms.<br />
• <strong>Cycling</strong> within the system is often an order of magnitude faster than<br />
movement into or out of the system.<br />
• Others (P, K, Ca, Mg, Fe, micronutrients) move in sedimentary<br />
cycles.<br />
• Gaseous materials (N, O, C, H) are involved in gaseous cycles.<br />
Some, such as S, have both sedimentary and gaseous cycles.<br />
• Much of the current focus in plant ecology is on the nitrogen cycle<br />
and flux of greenhouse gases to the atmosphere.
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