dc.contributor.author |
Stover, Dan B. |
en |
dc.contributor.author |
Day, F. P. |
en |
dc.contributor.author |
Butnor, J. R. |
en |
dc.contributor.author |
Drake, Bert G. |
en |
dc.date.accessioned |
2012-02-16T13:42:02Z |
|
dc.date.available |
2012-02-16T13:42:02Z |
|
dc.date.issued |
2007 |
|
dc.identifier.citation |
Stover, Dan B., Day, F. P., Butnor, J. R., and Drake, Bert G. 2007. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F17854">Effect of elevated CO-2 on coarse-root biomass in Florida scrub detected by ground-penetrating radar</a>." <em>Ecology</em>. 88:1328–1334. |
en |
dc.identifier.issn |
0012-9658 |
|
dc.identifier.uri |
http://hdl.handle.net/10088/17854 |
|
dc.description.abstract |
Growth and distribution of coarse roots in time and space represent a gap in our understanding of belowground ecology. Large roots may play a critical role in carbon sequestration belowground. Using ground-penetrating radar (GPR), we quantified coarse-root biomass from an open-top chamber experiment in a scrub-oak ecosystem at Kennedy Space Center, Florida, USA. GPR propagates electromagnetic waves directly into the soil and reflects a portion of the energy when a buried object is contacted. In our study, we utilized a 1500 MHz antenna to establish correlations between GPR signals and root biomass. A significant relationship was found between GPR signal reflectance and biomass (<I>R</I><SUP>2</SUP> = 0.68). This correlation was applied to multiple GPR scans taken from each open-top chamber (elevated and ambient CO<SUB>2</SUB>). Our results showed that plots receiving elevated CO<SUB>2</SUB> had significantly (<I>P</I> = 0.049) greater coarse-root biomass compared to ambient plots, suggesting that coarse roots may play a large role in carbon sequestration in scrub-oak ecosystems. This nondestructive method holds much promise for rapid and repeatable quantification of coarse roots, which are currently the most elusive aspect of long-term belowground studies. |
en |
dc.relation.ispartof |
Ecology |
en |
dc.title |
Effect of elevated CO-2 on coarse-root biomass in Florida scrub detected by ground-penetrating radar |
en |
dc.type |
Journal Article |
en |
dc.identifier.srbnumber |
55259 |
|
rft.jtitle |
Ecology |
|
rft.volume |
88 |
|
rft.spage |
1328 |
|
rft.epage |
1334 |
|
dc.description.SIUnit |
serc |
en |
dc.citation.spage |
1328 |
|
dc.citation.epage |
1334 |
|