COS 132 - Nitrogen cycling and enrichment in forests

Thursday, August 9, 2007: 1:30 PM-5:00 PM
Almaden Blrm I, San Jose Hilton
1:30 PM
 Immobilization of 15N-ammonium and nitrate in forest soils
Weixing Zhu, State University of New York - Binghamton; Wenwen Wang, State University of New York - Binghamton
2:10 PM
 Impact of chronic nitrogen addition on soil trace gas fluxes in a tropical lowland rainforest
Birgit Koehler, University of Goettingen; Marife D. Corre, University of Goettingen; Edzo Veldkamp, University of Goettingen
2:30 PM
 Effects of nitrogen excess through rainfalls on growth and competition status of woody seedlings in Mt Tanzawa, near Tokyo, and mitigation of the effects using wood-chips
Akiko Sakai, Yokohama National University; Reiji Fujimaki, Shimane University; Nobuhiro Kaneko, Yokohama National University
2:50 PM
 Freeze-thaw cycles, nitrogen dynamics, and primary production in a northern temperate ecosystem
Germaine E. Joseph, University of Western Ontario; Hugh Henry, University of Western Ontario
3:10 PM
3:20 PM
 Changes in nitrogen cycling and retention processes in soils under spruce forests along a nitrogen enrichment gradient in Germany
Marife D. Corre, University of Goettingen; Edzo Veldkamp, University of Goettingen; Rainer Brumme, University of Goettingen
3:40 PM
 Fire severity, nitrogen loss, and plant nitrogen availability in boreal black spruce forests
Michelle C. Mack, University of Florida; Leslie Boby-Sabatinelli, University of Florida; Jill F. Johnstone, University of Saskatchewan; Teresa N. Hollingsworth, Pacific Northwest Research Station; Edward A. G. Schuur, University of Florida; F. Stuart Chapin III, University of Alaska Fairbanks
4:00 PM
 Plant species diversity modulates the effect of nitrogen deposition on litter decomposition
Lucia Vivanco, IFEVA-CONICET; Amy T. Austin, University of Buenos Aires, IFEVA-CONICET
4:20 PM
 Nitrogen loading affects free amino acid concentrations differently than inorganic N in temperate forest soils along a gradient of nitrogen deposition
Harbans L. Sehtiya, University of Illinois at Chicago; John Lussenhop, University of Illinois at Chicago; Hormoz BassiriRad, University of Illinois at Chicago
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