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
Background & Motivation From Pavich, 1985 From Valette-Silver (1986)
Background & Motivation Substance 10 Be Rain 2 x 10 4 Soils 2 x 10 7 – 2 x 10 9 Hardwood 5 x 10 6 Organics in sediment 2 x 10 10 Reproduced from Brown 1984 Organic solutions
Samples & Methods Acorn G. Tsugae on hemlock Hickory nuts
Methods
Results Oaks Decayed/non-decayed 16.0 14.0 12.0 White Big 10.0 White Moss White small 8.0 Brown Rot 6.0 Half & Half 4.0 2.0 0.0 Ag Al Ba Ca Cr Cu Fe K Mg Mn Mo Na Ni P Pb Sr Ti Zn 10B e
Results Hickory Decayed/non-decayed 30.0 25.0 20.0 Hickory 15.0 10.0 5.0 0.0 Ag Al Ba Ca Cr Cu Fe K Mg Mn Mo Na Ni P Pb Sr Ti Zn 10 Be
Results Wisconsin Stump Fruiting body and Mn splinters 50.0 45.0 46.1 40.0 35.0 30.0 FB/Bulk 25.0 Mn/bulk 20.0 15.0 10.0 5.0 5.5 2.8 2.5 0.0 1.5 0.8 0.7 0.6 0.3 0.4 0.6 0.4 0.3 0.5 0.6 0.2 0.1 0.1 0.2 Ag Al Ba Ca Cr Cu Fe K Mg Mn Mo Na Ni P Pb Sr Ti Zn 10 Be
[10Be] M at/g ash weight 1000 1500 2000 2500 3000 500 0 Acorns Hickory nuts Hickory leaf Maple leaf Oak leaf Results ½ & ½ [10Be] in samples Brown rot White small White w/moss White big Good Oak Decayed hickory Good hickory Mn splinters Tree bulk Fruiting Body
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.
Future Work ? ?
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