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2
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Plant Photosynthesis (Net CO
2
Exchange Rate) Responses
to Atmospheric CO
2
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
[
Phytoplanktonic assemblage characteristic of south china sea coastal waters
]
1
-6%
0%
10 Species of Tropical Forest Tree Seedlings
1
-5%
0%
12 Species Ecosystem
3
22.7%
5.5%
12 Species From Fertile Permanent Grassland
15
67.5%
13.2%
7 Species Ecosystem
4
31.8%
9.7%
Alpine grassland dominated by
Carex curvula
2
66.5%
15.2%
Calcareous Grassland (C
3
)
11
27.4%
2.8%
Calcareous Grassland Community in the Swiss Jura Mountains
2
49.5%
3.2%
Calcareous Grassland dominated by
Bromus erectus
(Hudson)
3
28%
2.9%
California Annual Grassland
2
20.5%
2.5%
California Annual Grassland on Sandstone-Derived Soil
2
21%
3.5%
California Annual Grassland on Serpentine-Derived Soil
2
11%
0.7%
California Grassland of Mostly Small Annual Species
3
30.7%
18.5%
Chaparral ecosystem dominated by shrubs
1
185%
0%
Duke Forest dominated by Loblolly Pine and other trees, shrubs and vines
2
51%
6.4%
Ecosystem, Ten Species of Tropical Forest Tree Seedlings
1
10%
0%
Ecosystem, Understory Plants in a Spruce Model Ecosystem
2
53%
9.9%
EUROFACE Poplar Plantation
1
82%
0%
European Beech and Norway Spruce Ecosystem
6
45.5%
12.5%
Filamentous algae dominated by
Zygnema
species, but also containing some
Mougeotia
and
Spirogyra
3
361.7%
260.7%
Forest Canopy in Lysimeter [
Eucalyptus
spp. and
Acacia
spp.]
1
53%
0%
Grassland Community
2
19%
2.8%
Grassland Community, Annual
4
57.3%
22.4%
Grassland [High-species-diversity temperate grazed in New Zealand]
3
70.7%
37.8%
Grassland [Species-poor on a peaty gley soil]
1
50%
0%
Grassland [Species-rich on a brown earth soil over limestone]
1
56%
0%
Irish Neutral Grassland Community
4
28.5%
6.8%
Linum usitatissimum
L. [Common Flax] in mixed stands with
Silene cretica
2
63.5%
15.9%
Loblolly pine seedlings plus a variety of C
3
and C
4
weeds
2
0%
15.6%
Longleaf pine savannahs throughout the southeastern United States
5
42%
9.9%
Mixed Community of White Clover and Buffalo Grass
6
23.5%
5.2%
Mixed stand of Quaking Aspen and Paper Birch
7
76.3%
13.6%
Mixed stand of Quaking Aspen and Sugar Maple
3
122.3%
42.8%
Narrowleaf plantain/tall fescue mixture
2
50%
0%
Native Riparian Community of the United Kingdom
2
23%
2.1%
Native Tallgrass Prairie
3
62%
17.4%
Native Tallgrass Prairie Dominated by
Andropogon gerardii
Vitman
2
13.5%
9.5%
Natural Ecosystem Composed Primarily (more than 95% of its biomass) of Yellow Birch and White Birch
2
39%
12.7%
Non-grazed Grassland Near Giessen, Germany
5
23.6%
8.4%
Non-legume Dicot Component of a New Zealand Dry Sandy Pasture
1
338%
0%
Nutrient-Poor Semi-Natural Grassland
1
20%
0%
Orchard Grass and Red Clover Pasture in Switzerland
12
29.1%
5.7%
Pasture
1
29%
0%
Pasture Ecosystem
1
12%
0%
Peat communities from Wales
6
104.7%
13%
Perennial Grassland of Cedar Creek Natural History Area in central Minnesota, USA
3
24.3%
4.9%
Perennial Ryegrass and White Clover Mixture
1
19%
0%
Phytoplankton Communities of the Nutrient-Poor Central Atlantic Ocean
2
10.5%
1.1%
Phytoplankton Community of a Fjord in Southern Norway
1
23%
0%
1
33%
0%
Phytoplanktonic assemblage characteristic of south china sea coastal waters
[]
1
-6%
0%
Pristine Tallgrass Prairie
3
23.3%
12.2%
Scrub-Oak Ecosystem
2
98.5%
39.2%
Scrub Oak Palmetto Ecosystem
3
69.3%
20.8%
Semi-Natural Grassland
3
27.3%
11.4%
Semi-natural grassland in central Sweden
4
34.3%
12.2%
Semi-Natural Grassland in Minnesota, USA
1
17%
0%
Shortgrass steppe in NE Colorado
13
34.5%
4.2%
Silene cretica
in mixed stands with Common Flax
2
98.5%
17.3%
Six Hardwood Tree Species
2
58%
4.9%
Southern China Ecosystem Of Six Tree Species [
Tree ecosystem
]
4
28.8%
4.6%
Southern California Chaparral Ecosystem
3
246.7%
13.4%
Swiss Lowland Deciduous Forest
1
100%
0%
Ten Species of Tropical Forest Tree Seedlings
1
10%
0%
Tree ecosystem
[Southern China Ecosystem Of Six Tree Species]
4
28.8%
4.6%
Understory Deciduous Trees in a
Pinus taeda
L. Plantation
1
70%
0%
Understory Plants in a Spruce Model Ecosystem
3
33.7%
13.4%
Understory Plants in a Spruce Model Ecosystem
2
53%
9.9%
Understory Vegetation of a Sweetgum Plantation
1
3%
0%
Wetland Communities Comprised of Native Graminoids and Reed Canary Grass
4
41.5%
10%
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