You are here: Home
/ Publication Information
Title: Plant physiological responses to hydrologically mediated changes in nitrogen supply on a boreal forest floodplain: a mechanism explaining the discrepancy in nitrogen demand and supply
Author: Koyama, Lina; Kielland, Knut.;
Source: Plant and Soil. 342(1-2): 129-139
Publication Series: Scientific Journal (JRNL)
Description: A discrepancy between plant demand and soil supply of nitrogen (N) has been observed in early successional stages of riparian vegetation in interior Alaska. We hypothesized that a hydrologically mediated N supply serves as a mechanism to balance this apparent deficiency of plant N supply. To test this hypothesis, we conducted a tracer experiment and measured the activity of nitrate reductase (NRA) over the summer on the early successional floodplain of the Tanana River in interior Alaska. Isotopic data showed that river-/groundwater was an important source of plant water and that hyporheic N could be absorbed by early successional species.
Keywords: floodplain, hyporheic nitrogen (N), N uptake, plant nitrate use, river discharge chemistry, seasonal change
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
XML: View XML
Koyama, Lina; Kielland, Knut. 2011. Plant physiological responses to hydrologically mediated changes in nitrogen supply on a boreal forest floodplain: a mechanism explaining the discrepancy in nitrogen demand and supply. Plant and Soil. 342(1-2): 129-139.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility