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Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species
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| Zeitschriftentitel: | Plant, Cell & Environment |
|---|---|
| Personen und Körperschaften: | , , , , , |
| In: | Plant, Cell & Environment, 28, 2005, 7, S. 823-833 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
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| Schlagwörter: |
| author_facet |
AESCHLIMANN, URS NÖSBERGER, JOSEF EDWARDS, PETER J. SCHNEIDER, MANUEL K. RICHTER, MICHAEL BLUM, HERBERT AESCHLIMANN, URS NÖSBERGER, JOSEF EDWARDS, PETER J. SCHNEIDER, MANUEL K. RICHTER, MICHAEL BLUM, HERBERT |
|---|---|
| author |
AESCHLIMANN, URS NÖSBERGER, JOSEF EDWARDS, PETER J. SCHNEIDER, MANUEL K. RICHTER, MICHAEL BLUM, HERBERT |
| spellingShingle |
AESCHLIMANN, URS NÖSBERGER, JOSEF EDWARDS, PETER J. SCHNEIDER, MANUEL K. RICHTER, MICHAEL BLUM, HERBERT Plant, Cell & Environment Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species Plant Science Physiology |
| author_sort |
aeschlimann, urs |
| spelling |
AESCHLIMANN, URS NÖSBERGER, JOSEF EDWARDS, PETER J. SCHNEIDER, MANUEL K. RICHTER, MICHAEL BLUM, HERBERT 0140-7791 1365-3040 Wiley Plant Science Physiology http://dx.doi.org/10.1111/j.1365-3040.2005.01331.x <jats:title>ABSTRACT</jats:title><jats:p>The effects of elevated pCO<jats:sub>2</jats:sub> on net ecosystem CO<jats:sub>2</jats:sub> exchange were investigated in managed <jats:italic>Lolium perenne</jats:italic> (perennial ryegrass) and <jats:italic>Trifolium repens</jats:italic> (white clover) monocultures that had been exposed continuously to elevated pCO<jats:sub>2</jats:sub> (60 Pa) for nine growing seasons using Free Air CO<jats:sub>2</jats:sub> Enrichment (FACE) technology. Two levels of nitrogen (N) fertilization were applied. Midday net ecosystem CO<jats:sub>2</jats:sub> exchange (mNEE) and night‐time ecosystem respiration (NER) were measured in three growing seasons using an open‐flow chamber system. The annual net ecosystem carbon (C) input resulting from the net CO<jats:sub>2</jats:sub> fluxes was estimated for one growing season. In both monocultures and at both levels of N supply, elevated pCO<jats:sub>2</jats:sub> stimulated mNEE by up to 32%, the exact amount depending on intercepted PAR<jats:italic>.</jats:italic> The response of mNEE to elevated pCO<jats:sub>2</jats:sub> was larger than that of harvestable biomass. Elevated pCO<jats:sub>2</jats:sub> increased NER by up to 39% in both species at both levels of N supply. NER, which was affected by mNEE of the preceding day, was higher in <jats:italic>T. repens</jats:italic> than in <jats:italic>L. perenne.</jats:italic> High N increased NER compared to low N supply. According to treatment, the annual net ecosystem C input ranged between 210 and 631 g C m<jats:sup>−2</jats:sup> year<jats:sup>−1</jats:sup> and was not significantly affected by the level of pCO<jats:sub>2</jats:sub>. Low N supply led to a higher net C input than high N supply. We demonstrated that at the ecosystem level, there was a long‐term stimulation in the net C assimilation during daytime by elevated pCO<jats:sub>2</jats:sub>. However, because NER was also stimulated, net ecosystem C input was not significantly increased at elevated pCO<jats:sub>2</jats:sub>. The annual net ecosystem C input was primarily affected by the amount of N supplied.</jats:p> Responses of net ecosystem CO<sub>2</sub> exchange in managed grassland to long‐term CO<sub>2</sub> enrichment, N fertilization and plant species Plant, Cell & Environment |
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10.1111/j.1365-3040.2005.01331.x |
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Wiley, 2005 |
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Wiley, 2005 |
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Plant, Cell & Environment |
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| title |
Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_unstemmed |
Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_full |
Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_fullStr |
Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_full_unstemmed |
Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_short |
Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_sort |
responses of net ecosystem co<sub>2</sub> exchange in managed grassland to long‐term co<sub>2</sub> enrichment, n fertilization and plant species |
| topic |
Plant Science Physiology |
| url |
http://dx.doi.org/10.1111/j.1365-3040.2005.01331.x |
| publishDate |
2005 |
| physical |
823-833 |
| description |
<jats:title>ABSTRACT</jats:title><jats:p>The effects of elevated pCO<jats:sub>2</jats:sub> on net ecosystem CO<jats:sub>2</jats:sub> exchange were investigated in managed <jats:italic>Lolium perenne</jats:italic> (perennial ryegrass) and <jats:italic>Trifolium repens</jats:italic> (white clover) monocultures that had been exposed continuously to elevated pCO<jats:sub>2</jats:sub> (60 Pa) for nine growing seasons using Free Air CO<jats:sub>2</jats:sub> Enrichment (FACE) technology. Two levels of nitrogen (N) fertilization were applied. Midday net ecosystem CO<jats:sub>2</jats:sub> exchange (mNEE) and night‐time ecosystem respiration (NER) were measured in three growing seasons using an open‐flow chamber system. The annual net ecosystem carbon (C) input resulting from the net CO<jats:sub>2</jats:sub> fluxes was estimated for one growing season. In both monocultures and at both levels of N supply, elevated pCO<jats:sub>2</jats:sub> stimulated mNEE by up to 32%, the exact amount depending on intercepted PAR<jats:italic>.</jats:italic> The response of mNEE to elevated pCO<jats:sub>2</jats:sub> was larger than that of harvestable biomass. Elevated pCO<jats:sub>2</jats:sub> increased NER by up to 39% in both species at both levels of N supply. NER, which was affected by mNEE of the preceding day, was higher in <jats:italic>T. repens</jats:italic> than in <jats:italic>L. perenne.</jats:italic> High N increased NER compared to low N supply. According to treatment, the annual net ecosystem C input ranged between 210 and 631 g C m<jats:sup>−2</jats:sup> year<jats:sup>−1</jats:sup> and was not significantly affected by the level of pCO<jats:sub>2</jats:sub>. Low N supply led to a higher net C input than high N supply. We demonstrated that at the ecosystem level, there was a long‐term stimulation in the net C assimilation during daytime by elevated pCO<jats:sub>2</jats:sub>. However, because NER was also stimulated, net ecosystem C input was not significantly increased at elevated pCO<jats:sub>2</jats:sub>. The annual net ecosystem C input was primarily affected by the amount of N supplied.</jats:p> |
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| author | AESCHLIMANN, URS, NÖSBERGER, JOSEF, EDWARDS, PETER J., SCHNEIDER, MANUEL K., RICHTER, MICHAEL, BLUM, HERBERT |
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| description | <jats:title>ABSTRACT</jats:title><jats:p>The effects of elevated pCO<jats:sub>2</jats:sub> on net ecosystem CO<jats:sub>2</jats:sub> exchange were investigated in managed <jats:italic>Lolium perenne</jats:italic> (perennial ryegrass) and <jats:italic>Trifolium repens</jats:italic> (white clover) monocultures that had been exposed continuously to elevated pCO<jats:sub>2</jats:sub> (60 Pa) for nine growing seasons using Free Air CO<jats:sub>2</jats:sub> Enrichment (FACE) technology. Two levels of nitrogen (N) fertilization were applied. Midday net ecosystem CO<jats:sub>2</jats:sub> exchange (mNEE) and night‐time ecosystem respiration (NER) were measured in three growing seasons using an open‐flow chamber system. The annual net ecosystem carbon (C) input resulting from the net CO<jats:sub>2</jats:sub> fluxes was estimated for one growing season. In both monocultures and at both levels of N supply, elevated pCO<jats:sub>2</jats:sub> stimulated mNEE by up to 32%, the exact amount depending on intercepted PAR<jats:italic>.</jats:italic> The response of mNEE to elevated pCO<jats:sub>2</jats:sub> was larger than that of harvestable biomass. Elevated pCO<jats:sub>2</jats:sub> increased NER by up to 39% in both species at both levels of N supply. NER, which was affected by mNEE of the preceding day, was higher in <jats:italic>T. repens</jats:italic> than in <jats:italic>L. perenne.</jats:italic> High N increased NER compared to low N supply. According to treatment, the annual net ecosystem C input ranged between 210 and 631 g C m<jats:sup>−2</jats:sup> year<jats:sup>−1</jats:sup> and was not significantly affected by the level of pCO<jats:sub>2</jats:sub>. Low N supply led to a higher net C input than high N supply. We demonstrated that at the ecosystem level, there was a long‐term stimulation in the net C assimilation during daytime by elevated pCO<jats:sub>2</jats:sub>. However, because NER was also stimulated, net ecosystem C input was not significantly increased at elevated pCO<jats:sub>2</jats:sub>. The annual net ecosystem C input was primarily affected by the amount of N supplied.</jats:p> |
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| spelling | AESCHLIMANN, URS NÖSBERGER, JOSEF EDWARDS, PETER J. SCHNEIDER, MANUEL K. RICHTER, MICHAEL BLUM, HERBERT 0140-7791 1365-3040 Wiley Plant Science Physiology http://dx.doi.org/10.1111/j.1365-3040.2005.01331.x <jats:title>ABSTRACT</jats:title><jats:p>The effects of elevated pCO<jats:sub>2</jats:sub> on net ecosystem CO<jats:sub>2</jats:sub> exchange were investigated in managed <jats:italic>Lolium perenne</jats:italic> (perennial ryegrass) and <jats:italic>Trifolium repens</jats:italic> (white clover) monocultures that had been exposed continuously to elevated pCO<jats:sub>2</jats:sub> (60 Pa) for nine growing seasons using Free Air CO<jats:sub>2</jats:sub> Enrichment (FACE) technology. Two levels of nitrogen (N) fertilization were applied. Midday net ecosystem CO<jats:sub>2</jats:sub> exchange (mNEE) and night‐time ecosystem respiration (NER) were measured in three growing seasons using an open‐flow chamber system. The annual net ecosystem carbon (C) input resulting from the net CO<jats:sub>2</jats:sub> fluxes was estimated for one growing season. In both monocultures and at both levels of N supply, elevated pCO<jats:sub>2</jats:sub> stimulated mNEE by up to 32%, the exact amount depending on intercepted PAR<jats:italic>.</jats:italic> The response of mNEE to elevated pCO<jats:sub>2</jats:sub> was larger than that of harvestable biomass. Elevated pCO<jats:sub>2</jats:sub> increased NER by up to 39% in both species at both levels of N supply. NER, which was affected by mNEE of the preceding day, was higher in <jats:italic>T. repens</jats:italic> than in <jats:italic>L. perenne.</jats:italic> High N increased NER compared to low N supply. According to treatment, the annual net ecosystem C input ranged between 210 and 631 g C m<jats:sup>−2</jats:sup> year<jats:sup>−1</jats:sup> and was not significantly affected by the level of pCO<jats:sub>2</jats:sub>. Low N supply led to a higher net C input than high N supply. We demonstrated that at the ecosystem level, there was a long‐term stimulation in the net C assimilation during daytime by elevated pCO<jats:sub>2</jats:sub>. However, because NER was also stimulated, net ecosystem C input was not significantly increased at elevated pCO<jats:sub>2</jats:sub>. The annual net ecosystem C input was primarily affected by the amount of N supplied.</jats:p> Responses of net ecosystem CO<sub>2</sub> exchange in managed grassland to long‐term CO<sub>2</sub> enrichment, N fertilization and plant species Plant, Cell & Environment |
| spellingShingle | AESCHLIMANN, URS, NÖSBERGER, JOSEF, EDWARDS, PETER J., SCHNEIDER, MANUEL K., RICHTER, MICHAEL, BLUM, HERBERT, Plant, Cell & Environment, Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species, Plant Science, Physiology |
| title | Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_full | Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_fullStr | Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_full_unstemmed | Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_short | Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| title_sort | responses of net ecosystem co<sub>2</sub> exchange in managed grassland to long‐term co<sub>2</sub> enrichment, n fertilization and plant species |
| title_unstemmed | Responses of net ecosystem CO2 exchange in managed grassland to long‐term CO2 enrichment, N fertilization and plant species |
| topic | Plant Science, Physiology |
| url | http://dx.doi.org/10.1111/j.1365-3040.2005.01331.x |