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 Bibliography
Here is a bibliography of all sources we used during research:

College of Tropical Agriculture and Human Resources. (2015) Nitrogen. University of Hawaii at Mānoa. http://www.ctahr.hawaii.edu/mauisoil/c_nutrients01.aspx.

de la Reguera, E. & Ahmad, R. (2009) Unpublished Data. E.S.S.R.E. http://essre.rpcs.org/2009/TA%20Research/.

Egbunine, A., Meisler, E., Rao, N. & Ribant, M. (2015) The Potential Effect of Mycorrhizal Fungi on Phosphate Levels in the Soil. E.S.S.R.E.

E.S.S.R.E. (2015) E.S.S.R.E. Microclimate Data Base. http://essre.rpcs.org/ESSREMicroclimateSurvey.htm.

Garber, J., McCoach, K., Shephard, P. & Soudan, N. (2014) The Explanation for Dropping Nitrate Levels. E.S.S.R.E. http://essre.rpcs.org/2014/WhiteGrass/Nitrators%20Paper.pdf.

Gardiner, L. (2007, May 7) The Nitrogen Cycle. National Earth Science Teachers Association. http://www.windows2universe.org/earth/Life/nitrogen_cycle.html.

Kimball, J. (2013, September 27) The Nitrogen Cycle. http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/N/NitrogenCycle.html.

Kuser, M., Laria, G., & Shay, M. (2013) Influences on Nitrate Leaching in the Soils if an Eastern Deciduous Forest; A Case Study. E.S.S.R.E.

Lovett, G. & Mitchell, M. (2004) Sugar maple and nitrogen cycling in the forests of eastern North America. The Ecological Society of America. http://www.caryinstitute.org/sites/default/files/public/reprints/Lovett_and_Mitchell_Frontiers_2004.pdf.