Plant Dry Weight (Biomass) Responses to Atmospheric CO2 Enrichment

Natural Communities or Ecosystems
   300ppm   600ppm   900ppm 
Plant Name  Number of
Studies 		  Arithmetic
Mean 		  Standard
Error 		  Number of
Studies 		  Arithmetic
Mean 		  Standard
Error 		  Number of
Studies 		  Arithmetic
Mean 		  Standard
Error 
[Northern mixed-grass prairie (wyoming, usa)] 431.8%9.7%        
[Mixed stand of quaking aspen, paper birch, and sugar maple] 343%9.9%        
10 Species of Tropical Forest Tree Seedlings 1-5%0%        
12 Species Ecosystem 322.7%5.5%        
12 Species From Fertile Permanent Grassland 1567.5%13.2%        
7 Species Ecosystem 431.8%9.7%        
Alpine grassland dominated by Carex curvula 266.5%15.2%        
Calcareous Grassland (C3) 1127.4%2.8%        
Calcareous Grassland Community in the Swiss Jura Mountains 249.5%3.2%        
Calcareous Grassland dominated by Bromus erectus (Hudson) 328%2.9%        
California Annual Grassland 220.5%2.5%        
California Annual Grassland on Sandstone-Derived Soil 221%3.5%        
California Annual Grassland on Serpentine-Derived Soil 211%0.7%        
California Grassland of Mostly Small Annual Species 330.7%18.5%        
Chaparral ecosystem dominated by shrubs 1185%0%        
Duke Forest dominated by Loblolly Pine and other trees, shrubs and vines 251%6.4%        
Ecosystem, 10 Species of Tropical Forest Tree Seedlings 1-5%0%        
Ecosystem, 12 Species 322.7%5.5%        
Ecosystem, 12 Species From Fertile Permanent Grassland 1567.5%13.2%        
Ecosystem, 7 Species 431.8%9.7%        
Ecosystem, Pasture 112%0%        
Ecosystem, Understory Plants in a Spruce Model Ecosystem 333.7%13.4%        
EUROFACE Poplar Plantation 182%0%        
European Beech and Norway Spruce Ecosystem 645.5%12.5%        
Filamentous algae dominated by Zygnema species, but also containing some Mougeotia and Spirogyra         3361.7%260.7%
Forest Canopy in Lysimeter [Eucalyptus spp. and Acacia spp.] 153%0%        
Grassland, Calcareous, (C3) 1127.4%2.8%        
Grassland, Calcareous, dominated by Bromus erectus 328%2.9%        
Grassland, California Annual 220.5%2.5%        
Grassland Community 219%2.8%        
Grassland Community 219%2.8%        
Grassland Community 225%4.2%        
Grassland Community, Irish Neutral 428.5%6.8%        
Grassland [High-species-diversity temperate grazed in New Zealand] 370.7%37.8%        
Grassland [Species-poor on a peaty gley soil] 150%0%        
Grassland [Species-rich on a brown earth soil over limestone] 156%0%        
Irish Neutral Grassland Community 428.5%6.8%        
Linum usitatissimum L. [Common Flax] in mixed stands with Silene cretica 263.5%15.9%        
Loblolly pine seedlings plus a variety of C3 and C4 weeds 20%15.6%        
Longleaf pine savannahs throughout the southeastern United States 542%9.9%        
Mixed stand of quaking aspen, paper birch, and sugar maple [] 343%9.9%        
Mixed Community of White Clover and Buffalo Grass 623.5%5.2%        
Mixed stand of Quaking Aspen and Paper Birch 776.3%13.6%        
Mixed stand of Quaking Aspen and Sugar Maple 3122.3%42.8%        
Narrowleaf plantain/tall fescue mixture 250%0%        
Native Riparian Community of the United Kingdom 223%2.1%        
Native Tallgrass Prairie 362%17.4%        
Native Tallgrass Prairie Dominated by Andropogon gerardii Vitman 213.5%9.5%        
Natural Ecosystem Composed Primarily (more than 95% of its biomass) of Yellow Birch and White Birch 239%12.7%        
Non-grazed Grassland Near Giessen, Germany 523.6%8.4%        
Non-legume Dicot Component of a New Zealand Dry Sandy Pasture 1338%0%        
Northern mixed-grass prairie (wyoming, usa) [] 431.8%9.7%        
Nutrient-Poor Semi-Natural Grassland 120%0%        
Orchard Grass and Red Clover Pasture in Switzerland 1229.1%5.7%        
Pasture 224.5%13.1%        
Pasture 19%0%        
Pasture Ecosystem 112%0%        
Peat communities from Wales 6104.7%13%        
Perennial Grassland of Cedar Creek Natural History Area in central Minnesota, USA 324.3%4.9%        
Perennial Ryegrass and White Clover Mixture         119%0%
Phytoplankton Communities of the Nutrient-Poor Central Atlantic Ocean 210.5%1.1%        
Phytoplankton Community of a Fjord in Southern Norway 123%0% 133%0%    
Prairie, Native Tallgrass 362%17.4%        
Prairie, Native Tallgrass Dominated by Andropogon gerardii 213.5%9.5%        
Pristine Tallgrass Prairie 323.3%12.2%        
Scrub-Oak Ecosystem 298.5%39.2%        
Scrub Oak Palmetto Ecosystem 369.3%20.8%        
Semi-Natural Grassland 327.3%11.4%        
Semi-natural grassland in central Sweden 434.3%12.2%        
Semi-Natural Grassland in Minnesota, USA 117%0%        
Shortgrass steppe in NE Colorado 1334.5%4.2%        
Silene cretica in mixed stands with Common Flax 298.5%17.3%        
Six Hardwood Tree Species 258%4.9%        
Southern China Ecosystem Of Six Tree Species [Tree ecosystem] 428.8%4.6%        
Southern California Chaparral Ecosystem 3246.7%13.4%        
Swiss Lowland Deciduous Forest 1100%0%        
Ten Species of Tropical Forest Tree Seedlings 110%0%        
Tree ecosystem [Southern China Ecosystem Of Six Tree Species] 428.8%4.6%        
Understory Deciduous Trees in a Pinus taeda L. Plantation 170%0%        
Understory Plants in a Spruce Model Ecosystem 333.7%13.4%        
Understory Plants in a Spruce Model Ecosystem 253%9.9%        
Understory Vegetation of a Sweetgum Plantation 13%0%        
Wetland Communities Comprised of Native Graminoids and Reed Canary Grass 441.5%10%        

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