Linked Life Data

12705918

Source:http://linkedlifedata.com/resource/pubmed/id/12705918

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2003-4-22
pubmed:abstractText
In a coral reef environment, a slight increase in dissolved inorganic nitrogen (DIN;> or =1.0 micro M) can alter the ecosystem via macroalgal blooms. We collected seagrass leaves from the tropical and subtropical Pacific Ocean in five countries and examined the interactions between nutrient concentrations (C, N, P), molar ratios of nutrients, and delta15N to find a possible indicator of the DIN conditions. Within most sites, the concentrations of nutrients and their molar ratios showed large variations owing to species-specific values. On the other hand, almost identical delta15N values were found in seagrass leaves of several species at each site. The correlations between delta15N and nutrient concentrations and between delta15N and molar ratios of nutrients suggested that nutrient availability did not affect the delta15N value of seagrass leaves by altering the physiological condition of the plants. Increases in delta15N of seagrass leaves mostly matched increases in DIN concentrations in the bottom water. We suggest that delta15N in seagrass leaves can be a good tool to monitor time-integrated decrease/increase of DIN concentrations at a site, both in the water column and the interstitial water.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0025-326X
pubmed:author
pubmed:issnType
Print
pubmed:volume
46
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
452-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
delta15N of seagrass leaves for monitoring anthropogenic nutrient increases in coral reef ecosystems.
pubmed:affiliation
Institute for Marine Resources and Environment, AIST Tsukuba Central 7, 1-1-1 Higashi, Tsukuba, 305-8567, Japan. m-yamamuro@aist.go.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't