Abstract
Natural cores of vegetation and soils of arctic tundra were collected in frozen condition in winter near Barrow, Alaska (71°20′N). These cores were used as microcosms in a phytotron experiment to measure the interactions, if any, between increasing atmospheric CO2 concentration and fertilization by ammonium nitrate on net ecosystem CO2 exchange and net yield of tundra vegetation. Increased soil N significantly enhanced net ecosystem CO2 uptake. The effect of increased CO2 concentration had little or no effect on mean net ecosystem carbon balance of the tundra microcosms. Added N significantly increased leaf area and phytomass of vascular plants in the microcosms while increased atmospheric CO2 had no effect on these parameters. We conclude that atmospheric CO2 is not now limiting net ecosystem production in the tundra and that its direct effects will be slight even at double the present concentration. the most probable effects of carbon dioxide in the coastal tundra will be through its indirect effects on temperature, water table, peat decomposition, and the availability of soil nutrients.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 26-29 |
| Number of pages | 4 |
| Journal | Oecologia |
| Volume | 65 |
| Issue number | 1 |
| DOIs | |
| State | Published - Dec 1 1984 |
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All Science Journal Classification (ASJC) codes
- Ecology, Evolution, Behavior and Systematics
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Interaction of increasing atmospheric carbon dioxide and soil nitrogen on the carbon balance of tundra microcosms. / Billings, W. D.; Peterson, K. M.; Luken, J. O.; Mortensen, David.
In: Oecologia, Vol. 65, No. 1, 01.12.1984, p. 26-29.Research output: Contribution to journal › Article
TY - JOUR
T1 - Interaction of increasing atmospheric carbon dioxide and soil nitrogen on the carbon balance of tundra microcosms
AU - Billings, W. D.
AU - Peterson, K. M.
AU - Luken, J. O.
AU - Mortensen, David
PY - 1984/12/1
Y1 - 1984/12/1
N2 - Natural cores of vegetation and soils of arctic tundra were collected in frozen condition in winter near Barrow, Alaska (71°20′N). These cores were used as microcosms in a phytotron experiment to measure the interactions, if any, between increasing atmospheric CO2 concentration and fertilization by ammonium nitrate on net ecosystem CO2 exchange and net yield of tundra vegetation. Increased soil N significantly enhanced net ecosystem CO2 uptake. The effect of increased CO2 concentration had little or no effect on mean net ecosystem carbon balance of the tundra microcosms. Added N significantly increased leaf area and phytomass of vascular plants in the microcosms while increased atmospheric CO2 had no effect on these parameters. We conclude that atmospheric CO2 is not now limiting net ecosystem production in the tundra and that its direct effects will be slight even at double the present concentration. the most probable effects of carbon dioxide in the coastal tundra will be through its indirect effects on temperature, water table, peat decomposition, and the availability of soil nutrients.
AB - Natural cores of vegetation and soils of arctic tundra were collected in frozen condition in winter near Barrow, Alaska (71°20′N). These cores were used as microcosms in a phytotron experiment to measure the interactions, if any, between increasing atmospheric CO2 concentration and fertilization by ammonium nitrate on net ecosystem CO2 exchange and net yield of tundra vegetation. Increased soil N significantly enhanced net ecosystem CO2 uptake. The effect of increased CO2 concentration had little or no effect on mean net ecosystem carbon balance of the tundra microcosms. Added N significantly increased leaf area and phytomass of vascular plants in the microcosms while increased atmospheric CO2 had no effect on these parameters. We conclude that atmospheric CO2 is not now limiting net ecosystem production in the tundra and that its direct effects will be slight even at double the present concentration. the most probable effects of carbon dioxide in the coastal tundra will be through its indirect effects on temperature, water table, peat decomposition, and the availability of soil nutrients.
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U2 - 10.1007/BF00384458
DO - 10.1007/BF00384458
M3 - Article
C2 - 28312105
AN - SCOPUS:0021570512
VL - 65
SP - 26
EP - 29
JO - Oecologia
JF - Oecologia
SN - 0029-8519
IS - 1
ER -