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Chapter 2-3

ENVS195 Chapter Notes - Chapter 2-3: Climax Community, Primary Succession, Optimal Foraging Theory


Department
Environmental Studies
Course Code
ENVS195
Professor
Erin Joakim
Chapter
2-3

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

 
oPhotosynthesis ! "#
" $# 
% $"&"

o"%'  !$
  $"""$ 
oChlorophylls  ""  !

oBiomass!"""& "!"""& " &
&
o"""" '
o("""$ &
% '""
)*'aerobic organisms
 (
o+  $
!!
oHerbivores! !
 "&"&
oDecomposers! !
o"&"!!*'"&"
oOmnivores$$$*
 !,"&"
oPrimary consumers''& "
oSecondary consumers''!$'
"&"
oTertiary consumers''-&& 
! "" $'!!

oGrazing food chain !  "
"! 
 " ."
 
oDetritus '!"""&
/01!"" 
 &
2 " $ ! 
oDecomposer Food Chain- '
' ! 
""'"""'3"
!!"%3"
""!
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oPhytoplankton#"$"*#4 $ 5
$zooplankton
Example$"!"*
5"* ""
)&" 
"&"
6 ""! !"!
)!ecological redundancy
functional compensation &"
"
 &
o&' !
$"& $""%!
*"".
o7 8!!&""'
""!" $$"&'
o9$&!" $ &""
 
oGross Primary productivity:&""!
$ 
)cellular respiration!
:&"Net Primary Productivity (NPP)$
! &""
oNet Community Productivity (NCP)!"! 
"$""' !"
 
 +
o*'
+"""&"&"organisms
; !&"!population
)""&*'
community
)ecosystem""! '
"&
 ;
oBiotic components!"& 3 
oAbiotic components'

Important abiotic factors: light, temperature, wind,
water, and soil characteristics such as pH, soil type, and
nutrient status
oSoil" &  '$!""!
 < $'""*"
"! &
o6"!!parent material'!
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