CO2 Science

Plant Dry Weight (Biomass) Responses to Atmospheric CO2 Enrichment
N

	300 ppm			600 ppm			900 ppm
Plant Name	Number of Studies	Arithmetic Mean	Standard Error	Number of Studies	Arithmetic Mean	Standard Error	Number of Studies	Arithmetic Mean	Standard Error
Narrowleaf Cattail [Typha augustifolia]	3	41.3%	8.5%
Nasturtium [Tropaeolum majus]	3	42.3%	10.8%
Native Texas Grassland [Grassland]	3	68.7%	13.6%
Needlegrass [Stipa krylovii]	2	38.5%	1.8%
Needlegrass [Stipa grandis]	1	30%	0%
Nemophila menziesii [Menzies' Baby Blue Eyes]	1	0%	0%
Nepalese Browntop [Microstegium vimineum]	3	-53.3%	15.6%
Nephrolepis exaltata [Boston Swordfern]				2	29%	3.5%	1	7%	0%
Nereocystis luetkeana [Bull Kelp]							2	100.5%	57.6%
Nettle, Stinging [Urtica dioica]	1	26%	0%
Nicotiana plumbaginifolia [Tex-Mex Tobacco]				4	50%	12%
Nicotiana tabacum [Cultivated Tobacco]	29	279.2%	104.1%
Night-flowering Catchfly [Silene noctiflora]	29	279.2%	104.1%
Nitzschia palea [Freshwater Diatom]	2	10%	4.9%
Nutsedge, Purple [Cyperus rotundus]	1	38%	0%
Nutsedge, Yellow [Cyperus esculentus]	1	16%	0%
Nymphaea marliac [Water Lily]	2	162%	76.4%