DeLuca, Thomas H.

English

University of Montana

University of MontanaScholarWorks at University of MontanaSyllabi Course SyllabiFall 9-1-2005FOR 595.01: The Nature and Significance ofSoluble Organic Nitrogen in Soil EcosystemsThomas H. DeLucaUniversity of Montana, MissoulaLet us know how access to this document benefits you.Follow this and additional works at: https://scholarworks.umt.edu/syllabiThis Syllabus is brought to you for free and open access by the Course Syllabi at ScholarWorks at University of Montana. It has been accepted forinclusion in Syllabi by an authorized administrator of ScholarWorks at University of Montana. For more information, please contactscholarworks@mso.umt.edu.Recommended CitationDeLuca, Thomas H., "FOR 595.01: The Nature and Significance of Soluble Organic Nitrogen in Soil Ecosystems" (2005). Syllabi.9776.https://scholarworks.umt.edu/syllabi/9776Special Problems in Soil Biochemistry Forestry 595 Fall 2005   The Nature and Significance of Soluble Organic Nitrogen in Soil Ecosystems    Instructor:   Tom DeLuca Text:   None Meeting Time:  T 11:30 – 12:20 Meeting Room:  403 SC First class:   Monday August 29, 2005   This year we are taking on the subject of soluble organic nitrogen (N) with specific interest in what portion of this pool is available for microbial and plant uptake.  Historically it was assumed that all plant N uptake was in the form of inorganic N (NH4+ or NO3-).  It was later shown that microorganisms were capable of direct assimilation of organic N sources and more recently that certain plants (either directly or via mycorrhizal fungi) can also access organic N in the form of amino acids.  This has led to a new N uptake hype: organic N is a (or the) major form of N taken up by plants.  Furthermore, numerous ecosystem studies have suggested that the high concentrations of dissolved organic N (DON) represent an important available form of N; however, little of this DON pool is amino N and thus very little of it is available for plant or microbial uptake.   It is our objective this semester to delve into the world of organic N and separate the wheat from the chaff.    Objectives:   Explore the chemistry, biology and biochemistry of organic N in the soil ecosystem and its significance in both natural (prairie, tundra, and grassland) and managed (agricultural) ecosystems.    Approach:  We will review of existing literature dealing with this topic and evaluate the significance of this large, yet poorly understood pool of N in the soil ecosystem.  Each student will lead a discussion on a given paper of their choice dealing with this subject.  The student will be assigned a date and have to provide a paper to the instructor one week before their section.  The instructor will copy the paper and make it available to all other students in the class.  All students will then read the paper and come to class prepared to critique and discuss the paper. Grades will be dependent upon participation and preparation.  Depending on the number of students in class, we may double up and have two papers in one day or have two students present one particularly complex or lengthy paper.     Fall 2005 Course Schedule             Week   Subject        August 29  Course Introduction: Who is DON?  (DeLuca)   September 5   Labor Day Holiday  September 12  History of plant organic N uptake (DeLuca)  September 19  Soluble amino acid N in prairie and agricultural ecosystems (DeLuca)  September 26  Polyphenolic N in forest ecosystems (DeLuca)  October 3  Student paper 1  October 10  Student paper 2  October 17  Student paper 3  October 24  Student paper 4  November 7  No Class (Soil Science Meetings)  November 14  Student paper 5  November 21  Student paper 6  November 28  Student paper 7  December 5  Student paper 8  December 12  Student paper 9 and course synthesis    

FOR 595.01: The Nature and Significance of Soluble Organic Nitrogen in Soil Ecosystems

https://scholarworks.umt.edu/cgi/viewcontent.cgi?article=10725&amp;context=syllabi

FOR 595.01: The Nature and Significance of Soluble Organic Nitrogen in Soil Ecosystems

Abstract

Similar works

Full text

Available Versions

University of Montana