Back

Title	en Nitrogen isotopes of organic nitrogen in reef coral skeletons as a proxy of tropical nutrient dynamics
Creator	en Yamazaki, Atsuko en Watanabe, Tsuyoshi NRID 1000080396283 en Tsunogai, Urumu NRID 1000050313367
Accessrights	open access
Rights	en Copyright 2011 by the American Geophysical Union
Subject	NDC 452
Description	Abstract en Understanding tropical nutrient dynamics is essential for quantifying marine productivity. In tropical and subtropical oceans, however, the spatial and continuous observation of nutrients has been scarce because of low nutrient concentration. The nitrogen isotopes of organic nitrogen in coral skeletons (δ15N_[coral]) could be used to record nitrogenous nutrient origins at oceanic surfaces. Here, we show the intra- and inter-reef variations of δ15N_[coral] in the western Pacific. The zonal distribution of δ15N_[coral] was found inside a coral reef corresponding with δ15N of seawater nitrate (δ15N_[nitrate]). The extended analysis of δ15N_[coral] among various coral reefs also shows a latitudinal gradient from tropical to temperate in the western Pacific. The δ15N_[coral] records high-resolution dynamics of nitrogenous nutrients through the geologic time scale.
Publisher	en American Geophysical Union
Date	Issued2011-10-12
Language	eng
Resource Type	journal article
Version Type	VoR
Identifier	HDL http://hdl.handle.net/2115/48992
Relation	isIdenticalTo DOI https://doi.org/10.1029/2011GL049053
Journal	PISSN 0094-8276 en Geophysical Research Letters Volume Number38 Page StartL19605
File	fulltext GRL38_L19605.pdf 280.17 KB (application/pdf) Issued2011-10-12
Oaidate	2023-07-26