Instantaneous ecosystem carbon dioxide fluxes at Mer Bleue Fertilization experiment 2001-2011
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Instantaneous ecosystem carbon dioxide fluxes at Mer Bleue Fertilization experiment, Ottawa, Canada, measured with a transparent, climate-controlled chamber and shrouds during May-August in 2001-2011. During the time period, the collars in Experiment 1 (control O and treatments PK, 5N, 5NPK started in 2000; 10NPK, 20NPK in 2001) were measured in 2001, 2003, 2005, 2008, 2009, 2011 and the collars in Experiment 2 (Control X and treatments 10N, 20N started in 2005) in 2008, 2009, 2011.Annual N application levels as NH4NO3 since the beginning of the respective treatments: 5 (1.6 g N m-2), 10 (3.2 g N m-2) and 20 times (6.4 g N m-2) ambient summer time wet N deposition (0.8 g m-2y-1 in 2000) with or without P (5.0 g m-2) and K (6.3 g m-2) as KH2PO4. Distilled water served as control. Nutrient solutions were applied every 3 weeks May-August on triplicate 3 x 3 m plots. For details of the experiment and data see the following publications:Data 2001-2005 are published by Bubier et al. 2007 Global Change Biology, 13, 1168-1186.Data 2001-2008 by Juutinen et al. 2010. Ecosystems, 13, 874-887.Data 2011 by Larmola et al. 2013. Global Change Biology, 19, 3729-3739.Data 2009: Arroy-Mora et al. 2018 Remote Sensing 10: 565, doi:10.3390/rs10040565.