Biogeochemical+Cycles+and+Pollu3on+

Biogeochemical

?Cycles

?and

?Pollu3on

?

Environment

?100

?

?

Tuesday,

?May

?22,

?2012

?

Biogeochemical

?Cycles

?Outline

?

? What

?are

?biogeochemical

?cycles

?

? Water

?Cycle

?

? Carbon

?Cycle

?

¨C Fast

?and

?Slow

?

¨C Biofuels

?and

?Tilman?s

?principles

?

? Nitrogen

?Cycle

?

¨C Haber-?©\Bausch

?Process

?

Photosynthesis drives

the carbon cycle

Most

?of

?a

?tree

?is

?built

?out

?of¡­

?

1. Wood,

?duh

?

2. Atmospheric

?CO2

?

3. Nutrients

?from

?the

?

soil

?especially

?

nitrates

?and

?

phosphates

?

33%

1

33%

2

33%

3

Images:

s1600/Carbon+Cycle+Cropped.jpg



biofuel.jpg

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