dc.contributor.author |
Schwendenmann, Luitgard |
en |
dc.contributor.author |
Veldkamp, E |
en |
dc.date.accessioned |
2016-09-30T04:10:10Z |
en |
dc.date.available |
2003-12-11 |
en |
dc.date.issued |
2005-06 |
en |
dc.identifier.citation |
Ecosystems, 2005, 8 (4), 339 - 351 |
en |
dc.identifier.issn |
1432-9840 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/30561 |
en |
dc.description.abstract |
Although tropical wet forests play an important role in the global carbon (C) and nitrogen (N) cycles, little is known about the origin, composition, and fate of dissolved organic C (DOC) and N (DON) in these ecosystems. We quantified and characterized fluxes of DOC, DON, and dissolved inorganic N (DIN) in throughfall, litter leachate, and soil solution of an old-growth tropical wet forest to assess their contribution to C stabilization (DOC) and to N export (DON and DIN) from this ecosystem. We found that the forest canopy was a major source of DOC (232 kg C ha–1 y–1). Dissolved organic C fluxes decreased with soil depth from 277 kg C ha–1 y–1 below the litter layer to around 50 kg C kg C ha–1 y–1 between 0.75 and 3.5m depth. Laboratory experiments to quantify biodegradable DOC and DON and to estimate the DOC sorption capacity of the soil, combined with chemical analyses of DOC, revealed that sorption was the dominant process controlling the observed DOC profiles in the soil. This sorption of DOC by the soil matrix has probably led to large soil organic C stores, especially below the rooting zone. Dissolved N fluxes in all strata were dominated by mineral N (mainly NO3−). The dominance of NO3– relative to the total amount nitrate of N leaching from the soil shows that NO3– is dominant not only in forest ecosystems receiving large anthropogenic nitrogen inputs but also in this old-growth forest ecosystem, which is not N-limited. |
en |
dc.description.uri |
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000230804500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e41486220adb198d0efde5a3b153e7d |
en |
dc.language |
English |
en |
dc.publisher |
Springer Verlag (Germany) |
en |
dc.relation.ispartofseries |
Ecosystems |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. The details obtained from http://www.sherpa.ac.uk/romeo/issn/1432-9840/
http://www.springer.com/gp/open-access/authors-rights/self-archiving-policy/2124 |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.subject |
Science & Technology |
en |
dc.subject |
Life Sciences & Biomedicine |
en |
dc.subject |
Ecology |
en |
dc.subject |
Environmental Sciences & Ecology |
en |
dc.subject |
ECOLOGY |
en |
dc.subject |
biodegradability |
en |
dc.subject |
dissolved organic carbon |
en |
dc.subject |
dissolved organic nitrogen |
en |
dc.subject |
nitrogen status |
en |
dc.subject |
dissolved inorganic nitrogen |
en |
dc.subject |
litter leachate |
en |
dc.subject |
soil formation |
en |
dc.subject |
soil solution |
en |
dc.subject |
sorption |
en |
dc.subject |
throughfall |
en |
dc.subject |
tropical wet forest |
en |
dc.subject |
Costa Rica |
en |
dc.subject |
COSTA-RICA |
en |
dc.subject |
RAIN-FOREST |
en |
dc.subject |
ISOTOPIC FRACTIONATION |
en |
dc.subject |
HUMIC SUBSTANCES |
en |
dc.subject |
DECIDUOUS FOREST |
en |
dc.subject |
NUTRIENT FLUXES |
en |
dc.subject |
STREAM WATER |
en |
dc.subject |
LA SELVA |
en |
dc.subject |
SOIL |
en |
dc.subject |
MATTER |
en |
dc.title |
The role of dissolved organic carbon, dissolved organic nitrogen, and dissolved inorganic nitrogen in a tropical wet forest ecosystem |
en |
dc.type |
Journal Article |
en |
dc.identifier.doi |
10.1007/s10021-003-0088-1 |
en |
pubs.issue |
4 |
en |
pubs.begin-page |
339 |
en |
pubs.volume |
8 |
en |
dc.description.version |
VoR - Version of Record |
en |
pubs.author-url |
http://link.springer.com/article/10.1007/s10021-003-0088-1 |
en |
pubs.end-page |
351 |
en |
pubs.publication-status |
Published |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Article |
en |
pubs.elements-id |
110649 |
en |
pubs.org-id |
Science |
en |
pubs.org-id |
School of Environment |
en |
dc.identifier.eissn |
1435-0629 |
en |
pubs.record-created-at-source-date |
2016-09-30 |
en |
pubs.online-publication-date |
2005-06-28 |
en |