BIOL-208 Lecture Notes - Lecture 2: Hummus, Soil Horizon, Atmospheric Circulation
17 Dec 2016
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Chapter 2: Life on Land
- Temperature, Atmospheric Circulation, and precipitation
- Uneven heating of earth’s surface
- Circulation and precipitation patterns
- Warm, moist air rises
- Cools, condenses, and falls as rain
- Cooler, dry air falls back to surface
- Coriolis Effect
- Deflecting air and water caused by rotation of earth
- Objects moving north to south appear to curve counter clockwise
in northern hemisphere and clockwise in southern hemisphere,
but force causes opposite rotation
- Climate Diagrams
- Summarizes climatic information using a standardized structure
- Seasonal variation in temperature and precipitation
- Length and intensity of wet and dry seasons
- Average minimum temperature above or below zero degrees celsius
- The hot desert is a moisture deficit region
- Soil
- The foundation of terrestrial biomes
- Living and nonliving materials
- Ecological system unto itself
- More carbon below than above; a lot more carbon is stored beneath earth’s
surface
- Brown and black world
- Muskeg is peat lands - a lot of organic matter due to no decomposition
- Horizons
- LFH/O: Litter Fermenting Humified; organic layer
- A horizon: minerals, clay, silt, sand, some organics; some materials come
from below, such as clay
- B horizon: clay, hummus, and other materials leached from A horizon,
such as humified juices
- C horizon: weathered parent material
- Soil profile
- Quality of soil depends on where it is
- Some of the poorest soils in the world in the rainforests
- Biodiversity and Soils
- 1.8 million species described; approximately 100 million or billion mor3e
in the world
- Generally, there is more biodiversity on land than water, possibly because
exploring where we humans live - the land - is easier to explore than
water (especially deep oceans)
- Non-vertebrates next frontier
find more resources at oneclass.com
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Document Summary
Cooler, dry air falls back to surface. Deflecting air and water caused by rotation of earth. Objects moving north to south appear to curve counter clockwise in northern hemisphere and clockwise in southern hemisphere, but force causes opposite rotation. Summarizes climatic information using a standardized structure. Length and intensity of wet and dry seasons. Average minimum temperature above or below zero degrees celsius. The hot desert is a moisture deficit region. More carbon below than above; a lot more carbon is stored beneath earth"s surface. Muskeg is peat lands - a lot of organic matter due to no decomposition. A horizon: minerals, clay, silt, sand, some organics; some materials come from below, such as clay. B horizon: clay, hummus, and other materials leached from a horizon, such as humified juices. Quality of soil depends on where it is. Some of the poorest soils in the world in the rainforests.
