Document Detail
Nitrogen status in Oregon Coast Range forest communities
Abstract/OtherAbstract :
Graduation date: 1981, Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) roots in four plant communities--ocean spray (Holodiscus discolor (Pursh). Maxim.)/salal (Gaultheria shallon Pursh), vine maple (Acer circinatum Pursh)/salal, sword-fern (Polystichum munitum (Kaulf.) Presi. var. munitum) and sword-f ern/oxalis (Oxalis oregana Nutt.)--were sampled for soluble nitrogen concentrations. Sampling prior to bud burst in the salal communities showed lower concentrations of soluble nitrogen than in the sword-fern communities. Summer samples showed no significant differences. Results suggest that salal community types experience minimum soluble nitrogen levels throughout the year while sword-fern community types experience higher nitrogen status during winter. Management practices that conserve or add nitrogen are more critical in salal community types., PDF derivative scanned at 300 ppi (256 B&W), using Capture Perfect 3.0, on a Canon DR-9080C. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Authors :
Alexander, Joseph Richard
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Contributors :
Ferrell, William K.
Publication Detail :
Publisher :  -     Type :  Thesis     Format :  -    
Date Detail :
2009-01-21, 2009-01-21, 1980-12-10
Subject :
Nitrogen, Plant communities
Coverage :
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Relation :
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Source :
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Copyright Information :
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Other Details :
Languages :  en_US    
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