BIO 101 Chapter Notes - Chapter 23: Carbon Cycle, Surface 2, Estuary
26 Sep 2016
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Made up of living & nonliving components of an env: including comm. s of org. s present & physical/chemical env. w/ which they interact. Temp: important physical feature of ecos, serves as clock that cues many biological events. Habitat: physical env. where org. lives & adapts to. Defined by characteristic plant life: determined by temp. Covers of e, includes oceans, coral reefs, estuaries: aquatic: freshwater. Low salt concentration, ponds, lakes, rivers, streams, wetlands: tropical forest. Warm temp. s, sufficient rainfall to support growth of trees, deciduous or evergreen (depends on presence/absence of dry season: grassland. Exp: prairies in n. america: desert. Extreme dryness, cold deserts: cold winters hot summers, hot deserts: uniformly warm throughout year: taiga. Evergreen trees, long & cold winters, short summers: tundra. In arctic & mtn regions, low-growing vegetation, layer of permafrost (frozen all year long) very close to surface of soil. Persistent pattern of change in e"s climate (decades or more)
