Class 22: Geritol Solution Slide 1 The Geritol Solution NOTES: Slide

Class 22: Geritol Solution Slide 1 The Geritol Solution NOTES: Slide

Class 22: Geritol Solution
Slide 1
The Geritol Solution
NOTES:
Slide 2
Final exam & upcoming classes
NOTES:
Slide 3 Why no phytoplankton bloom in the
Subarctic Pacific?
NOTES:
Page 1 of 14
Class 22: Geritol Solution
SlideN4o bloom at Station P in the Subarctic
Pacific
NOTES:
Slide 5
The ‘Major Grazer’ hypothesis
NOTES:
Slide 6
NOTES:
Page 2 of 14
Neocalanus life history
Class 22: Geritol Solution
Slide 7
N. Atlantic Calanus life history
NOTES:
Slide 8 The micrograzer hypothesis: ciliates
NOTES:
Slide 9 Blooms with constant mixed layers
NOTES:
Page 3 of 14
Class 22: Geritol Solution
Slide 1P0rotozoan grazing & winter standing
stocks the key!
NOTES:
SlPiderem
11anent halocline is one key to the lack
of spring bloom in the N. Pacific
NOTES:
SlideE1v2ans & Parslow’s (1985) micrograzer
hypothesis
NOTES:
Page 4 of 14
Class 22: Geritol Solution
SlidePr1o3blems with the “naive” micrograzer
hypothesis
NOTES:
Slide 14
Martin’s Geritol solution
NOTES:
Slide 15
NOTES:
Page 5 of 14
The Greenhouse effect & Fe
Class 22: Geritol Solution
Slide 16
Roles of Fe in plant metabolism
NOTES:
Slide 17
Key uses of Fe & Zn by microbes
NOTES:
Slide 18Martin & Fitzwater’s Fe hypothesis
NOTES:
Page 6 of 14
Class 22: Geritol Solution
Slide 19
High nitrate all year at Station P
NOTES:
Slide 2I0ron & Zn depletion in surface water
NOTES:
SliM
dea2r1tin & Fitzwater (1988), Martin et al.
(1999)
NOTES:
Page 7 of 14
Class 22: Geritol Solution
SlidS
e t2a2tion P: Effects of Fe on Chl a, N & P
NOTES:
Slide 23 Fe effect dependent on lat & long
NOTES:
Slide 24
NOTES:
Page 8 of 14
No Fe effect on production!
Class 22: Geritol Solution
Slide 25
The ecumenical Fe hypothesis
NOTES:
Slide 26
Market-oriented CO2 solution
NOTES:
Slide 27
NOTES:
Page 9 of 14
SOIREE
Class 22: Geritol Solution
Slide 28
IRONEX III, SOIREE
NOTES:
Slide 2V9ariable fluorescence & Fe limitation
NOTES:
SlIiR
deO3N0EX III: bloom by 30-50 ìm diatoms
NOTES:
Page 10 of 14
Class 22: Geritol Solution
Slide 31
Fe increases CO2 gradient
NOTES:
Slide 32
SOIREE: major results
NOTES:
Slide 33
NOTES:
Page 11 of 14
SOIREE
Class 22: Geritol Solution
Slide 34
C:N:P:Fe Redfield ratios
NOTES:
Slide 35
Iron stress in the oceans
NOTES:
Slide 36
NOTES:
Page 12 of 14
The ecumenical Fe hypothesis
Class 22: Geritol Solution
Slide 37
NOTES:
Slide 38
Iron-limitation zones
NOTES:
SliD
deoe3s9Fe limit production in the Southern
California Bight?
NOTES:
Page 13 of 14
Class 22: Geritol Solution
SliD
deoe4s0Fe limit production in the Southern
California Bight? Perhaps
NOTES:
Slide 41 Problems with the Geritol solution
NOTES:
Slide 42
NOTES:
Page 14 of 14
Will Fe additions work?