@prefix datacite: <http://purl.org/spar/datacite/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix dwc: <http://rs.tdwg.org/dwc/terms/> .
@prefix gcis: <http://data.globalchange.gov/gcis.owl#> .
@prefix cito: <http://purl.org/spar/cito/> .
@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix biro: <http://purl.org/spar/biro/> .

<http://52.38.26.42:8080/dataset/nasa-ornldaac-915>
   datacite:identifier "nasa-ornldaac-915";
   dcterms:title "LBA-ECO ND-11 Litter Decomposition, Carbon, and Nitrogen Dynamics in Agroforestry"^^xsd:string;
   datacite:doi "10.3334/ORNLDAAC/915";
   datacite:hasIdentifier [ a datacite:AlternateResourceIdentifier; rdf:value "LBA_ND11_NTLL" ] ;
   dcat:landingPage <http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=915>;
   dcterms:description "ABSTRACT: It has been proposed that the C/N ratio, or quality, of litter or mulch mixtures affects N release. Although total N release from these mixtures and the effects on soil N are relatively well understood, a mechanistic understanding of the interactions between litter species with respect to their N release is still lacking. This study examines decomposition and N dynamics in mixtures of high-quality leguminous mulch, gliricidia [Gliricidia sepium (Jacq.) Kunth. ex Walp.] with a C/N ratio of 13, and low-quality cupuacu [Theobroma grandiflorum (Wild. ex Spring) Schumann] litter with a C/N ratio of 42, which occur in combination in agroforestry systems. Ratios of 100:0, 80:20, 50:50, 20:80, 0:100 of fresh 15N-enriched gliricidia leaves and senescent cupuacu leaves, totaling the same dry weight of 6.64 t ha-1, were applied to an Oxisol and sampled at 6, 14, 38, and 96 days after application. After more than 40% of the N in the gliricidia leaves had been released and the microbial biomass N reached its peak, a significant increase in available soil N occurred at day 14, which was more pronounced with greater amounts of gliricidia in the leaf mixture. However, relative to the N applied in the leaf mixture, there was no significant difference in available soil N with greater proportions of gliricidia. Total N release from the mixtures corresponded to the total N applied by gliricidia. Until day 38, cupua&#195;&#131;&#198;&#146;&#195;&#130;&#194;&#167;u C mineralization was significantly faster in the presence of the highest proportion of gliricidia compared to lower proportions. This faster C mineralization of more than 0.5% per day, however, did not increase total C loss or N release from cupua&#195;&#131;&#198;&#146;&#195;&#130;&#194;&#167;u leaves after 96 days. The use of 15N tracers identified an N transfer from gliricidia leaves and the soil to cupua&#195;&#131;&#198;&#146;&#195;&#130;&#194;&#167;u leaves and consequently, a lower N release from gliricidia to the soil in the presence of cupua&#195;&#131;&#198;&#146;&#195;&#130;&#194;&#167;u leaves. Though we expected that available N in the soil would also decrease with greater amounts of cupua&#195;&#131;&#198;&#146;&#195;&#130;&#194;&#167;u litter in the mixture, our results indicated an additive effect of the two species on N release and soil mineral N, with gross interactions between them canceling net interactive effects. Therefore, N release of leaf mixtures behaved as predicted from a calculated sum of individual release patterns, in spite of a transfer of N from the high- to the low-quality leaves."^^xsd:string;
 
## Dates of dataset release and access
   dcterms:issued "2009-01-01T00:00:00"^^xsd:dateTime;

## Spatial and temporal information:
dcterms:spatial [
    a dcterms:Location, gcis:SpatialExtent;
    gcis:northBoundLatitude "-2.518"^^xsd:float;
    gcis:southBoundLatitude "-2.518"^^xsd:float;
    gcis:eastBoundLongitude "-60.03"^^xsd:float;
    gcis:westBoundLongitude "-60.03"^^xsd:float;
  ] ;
dcterms:temporal [
    a dcterms:PeriodOfTime, gcis:TemporalExtent;
    gcis:startDate "2002-07-11T00:00:00"^^xsd:dateTime;
    gcis:endDate "2002-10-15T00:00:00"^^xsd:dateTime;
    ] ;

## Attributes and keywords

## Instrument Instances

   a gcis:Dataset .




## This entity was produced by an organization:     
<http://52.38.26.42:8080/dataset/nasa-ornldaac-915>    
   prov:qualifiedAttribution [
      a prov:Attribution;
      prov:agent <http://52.38.26.42:8080/organization/oak-ridge-national-laboratory-distributed-active-archive-center>;
      prov:hadRole <http://52.38.26.42:8080/role_type/data_archive>;
      ] .


## Also known as:
<http://52.38.26.42:8080/dataset/nasa-ornldaac-915>
   skos:altLabel "oai:mercury-ops2.ornl.gov:ornldaac_915";
   gcis:hasURL "http://mercury.ornl.gov/oai/provider?verb=GetRecord&metadataPrefix=oai_dif&identifier=oai:mercury-ops2.ornl.gov:ornldaac_915";
   skos:exactMatch <http://52.38.26.42:8080/lexicon/ornl/dataset/oai:mercury-ops2.ornl.gov:ornldaac_915> .
<http://52.38.26.42:8080/dataset/nasa-ornldaac-915>
   skos:altLabel "oai:mercury.ornl.gov:ornldaac_915";
   gcis:hasURL "http://mercury.ornl.gov/oai/provider?verb=GetRecord&metadataPrefix=oai_dif&identifier=oai:mercury.ornl.gov:ornldaac_915";
   skos:exactMatch <http://52.38.26.42:8080/lexicon/ornl/dataset/oai:mercury.ornl.gov:ornldaac_915> .