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Do Fungi Transport 10 Be During Wood Degradation? Grace Conyers - - PowerPoint PPT Presentation
Do Fungi Transport 10 Be During Wood Degradation? Grace Conyers - - PowerPoint PPT Presentation
Do Fungi Transport 10 Be During Wood Degradation? Grace Conyers Purdue University Forecast (1) The role of meteoric 10 Be in soil erosion (2) [ 10 Be] in decayed organic materials & the questions it raises. Background & Motivation
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Background & Motivation
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Background & Motivation
From Pavich, 1985 From Valette-Silver (1986)
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Background & Motivation
Organic solutions
Substance
10Be
Rain 2 x 104 Soils 2 x 107 – 2 x 109 Hardwood 5 x 106 Organics in sediment 2 x 1010
Reproduced from Brown 1984
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Samples & Methods
- G. Tsugae on hemlock
Acorn Hickory nuts
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Methods
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Results
Ag Al Ba Ca Cr Cu Fe K Mg Mn Mo Na Ni P Pb Sr Ti Zn 10B e 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0
Oaks Decayed/non-decayed
White Big White Moss White small Brown Rot Half & Half
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Results
Ag Al Ba Ca Cr Cu Fe K Mg Mn Mo Na Ni P Pb Sr Ti Zn 10 Be 0.0 5.0 10.0 15.0 20.0 25.0 30.0
Hickory Decayed/non-decayed
Hickory
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Results
Ag Al Ba Ca Cr Cu Fe K Mg Mn Mo Na Ni P Pb Sr Ti Zn 10 Be 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0
0.3 0.8 0.2 0.4 46.1 0.6 5.5 0.4 0.7 2.5 2.8 0.6 0.1 0.1 0.3 0.5 0.6 0.2 1.5
Wisconsin Stump Fruiting body and Mn splinters
FB/Bulk Mn/bulk
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Results
Acorns Hickory nuts Hickory leaf Maple leaf Oak leaf ½ & ½ Brown rot White small White w/moss White big Good Oak Decayed hickory Good hickory Mn splinters Tree bulk Fruiting Body 500 1000 1500 2000 2500 3000
[10Be] in samples [10Be] M at/g ash weight
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Summary
There is probably something going on with the fungus, but there is not enough change to say that fungus is a major transporter. There is something going on with hickory, but we aren't sure what makes this tree different from the others.
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Future Work
? ?