BIOLOGY 1101 Lecture Notes - Lecture 23: Phosphorus Cycle, Carbon Cycle
17 Nov 2016
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Document Summary
Communities can change or remain sable over time: succession. The change in species composition in a community over time. Usually predictable change in the species composition of a community over time. Process begins in an area with no life and no soil. Process occurs in an area where life is already present. Refers to the living components of the ecosystem: soil is (cid:272)o(cid:374)sidered a livi(cid:374)g (cid:272)o(cid:373)po(cid:374)e(cid:374)t of e(cid:272)osyste(cid:373)s, as lo(cid:374)g as it has(cid:374)"t (cid:271)ee(cid:374) paved over or has been severely disturbed, share two essential features. Chemical resources and physical conditions within an area. Habitat: every system has defined parameters. Biomes: large ecosystems that occur around the world, climate. Three most important element cycles: carbon cycle. Global co2 levels are rising overall, but they also exhibit a sharp rise and fall over the course of each year. Nutrients are like a bottleneck limiting plant growth. Dead material and waste from other organisms, junk that many organism"s cant digest.
