Title: Nitrogen Fixation Responses in Sphagnum Mosses to N-Additions to an Alberta Poor Fen, 2012-2015
Citation: Wieder, R.K., D.H. Vitt, M.A. Vile, J.A. Graham, J.A. Hartsock, J.M. Popma, H. Fillingim, M. House, J.C. Quinn, K.D. Scott, M. Petix, and K.J. McMillen. 2020. Nitrogen Fixation Responses in Sphagnum Mosses to N-Additions to an Alberta Poor Fen, 2012-2015 ver 1. Environmental Data Initiative. https://doi.org/10.6073/pasta/304e862ca19052360c84739d0dc78ec5
Study Site: Mariana Lake, Alberta
Purpose: Dynamics of carbon dioxide, water, and energy fluxes and the associated meteorological drivers; assessment of the ecological character of the forest; examination of the use of remote sensing to model carbon dioxide exchange and the status of macronutrients in the canopy
Abstract: Development of the oil sands has led to increasing atmospheric N deposition, with values as high as 17 kg N ha-1 yr-1; regional background levels <2 kg N ha-1 yr-1. To examine responses to N deposition, over five years, we experimentally applied N (as NH4NO3) to a poor fen near Mariana Lake, Alberta, at rates of 0, 5, 10, 15, 20, and 25 kg N ha-1 yr-1, plus controls (no water or N addition).
Supplemental Information Summary: Between June and August of each year, we measured N2-fixation using the acetylene reduction technique between 2012 and 2015
Research:
Further Info:
Status: Complete
Keywords:
effects of disturbance,
oil and gas,
nitrogen,
fen,
Geographical coordinates: North: 55.90, South: 55.90 East: -112.09 West: -112.09
Bounding Temporal Extent: Start Date: 2012-06-11, End
Date: 2015-08-06
