| 53404 |
Creator |
d2ac6cbcf82f7e3d259baf2bc472274e |
| 53404 |
Creator |
ext-0364c0a32b367a758f5b54097f266506 |
| 53404 |
Creator |
ext-144d36cdcd38ab88a6e69589e8e1c0e0 |
| 53404 |
Creator |
ext-0971f5ac9bea40a51a12745baac879d8 |
| 53404 |
Date |
2018-02-05 |
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Is Part Of |
repository |
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Is Part Of |
p02698463 |
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abstract |
The majority of above-ground carbon in tropical forests is stored in wood, which is
returned to the atmosphere during decomposition of coarse woody debris. However, the
factors controlling wood decomposition have not been experimentally manipulated over
time scales comparable to the length of this process.<br></br><br></br>We hypothesized
that wood decomposition is limited by nutrient availability and tested this hypothesis
in a long-term litter addition and removal experiment in a lowland tropical forest
in Panama. Specifically, we quantified decomposition using a 15-year chronosequence
of decaying boles, and measured respiration rates and nutrient limitation of wood
decomposer communities.<br></br><br></br>The long-term probability that a dead tree
completely decomposed was decreased in plots where litter was removed, but did not
differ between litter addition and control treatments. Similarly, respiration rates
of wood decomposer communities were greater in control treatments relative to litter
removal plots; litter addition treatments did not differ from either of the other
treatments. Respiration rates increased in response to nutrient addition (nitrogen,
phosphorus, and potassium) in the litter removal and addition treatments, but not
in the controls.<br></br><br></br>Established decreases in concentrations of soil
nutrients in litter removal plots and increased respiration rates in response to nutrient
addition suggest that reduced rates of wood decomposition after litter removal were
caused by decreased nutrient availability. The effects of litter manipulations differed
directionally from a previous short-term decomposition study in the same plots, and
reduced rates of bole decomposition in litter removal plots did not emerge until after
more than 6 years of decomposition. These differences suggest that litter-mediated
effects on nutrient dynamics have complex interactions with decomposition over time. |
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authorList |
authors |
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issue |
4 |
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status |
published |
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status |
peerReviewed |
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uri |
http://data.open.ac.uk/oro/document/653393 |
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uri |
http://data.open.ac.uk/oro/document/653397 |
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uri |
http://data.open.ac.uk/oro/document/653398 |
| 53404 |
uri |
http://data.open.ac.uk/oro/document/653399 |
| 53404 |
uri |
http://data.open.ac.uk/oro/document/653400 |
| 53404 |
uri |
http://data.open.ac.uk/oro/document/653401 |
| 53404 |
uri |
http://data.open.ac.uk/oro/document/661738 |
| 53404 |
volume |
32 |
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type |
AcademicArticle |
| 53404 |
type |
Article |
| 53404 |
label |
Gora, Evan M.; Sayer, Emma J. ; Turner, Benjamin L. and Tanner, Edmund V. J. (2018).
Decomposition of coarse woody debris in a long-term litter manipulation experiment:
A focus on nutrient availability. Functional Ecology, 32(4) pp. 1128–1138. |
| 53404 |
label |
Gora, Evan M.; Sayer, Emma J. ; Turner, Benjamin L. and Tanner, Edmund V. J. (2018).
Decomposition of coarse woody debris in a long-term litter manipulation experiment:
A focus on nutrient availability. Functional Ecology, 32(4) pp. 1128–1138. |
| 53404 |
Publisher |
ext-dfec3621c63b727aea32091d7bde7514 |
| 53404 |
Title |
Decomposition of coarse woody debris in a long-term litter manipulation experiment:
A focus on nutrient availability |
| 53404 |
in dataset |
oro |