Stable isotopic structure of aquatic ecosystems
Stable isotopic structure of aquatic ecosystems
复制标题
水生生态系统的稳定同位素结构
DOI：
10.1007/bf02703081
复制
发表时间：
1993
影响因子：
2.9
通讯作者：
Y. Kurihara
中科院分区：
文献类型：
--
作者：
E. Wada;Y. Kabaya;Y. Kurihara
同位素、地球化学和生态结构可以为理解物质流以及生态系统的功能和结构提供新的维度。研究了日本七秋田河口湾包括鸭毛泻湖的生源物质的δ 13 C和δ 15 N分布特征，以构建同位素地球化学和生态结构，用于评价有机质的归宿和转移以及食物网结构。δ ~（15）N-δ ~（13）C图成功地描述了该生态系统的同位素结构。陆源有机质与陆源有机质的混合解释了河口生源物质同位素比值的变化，15 N的富集具有明显的营养水平效应。根据陆源有机物在食物链中的贡献，生物被分为三类。泻湖中除软体动物外，几乎所有生物都依赖于海洋来源的有机物。陆地和海洋有机物的贡献相媲美的泻湖中的软体动物。
Isotopic, biogeochemical and ecological structure can provide a new dimension for understanding material flows, and the simultaneous function and structure of an ecosystem. Distributions ofδ13C andδ15N for biogenic substances in the Nanakita river estuary involving Gamo lagoon in Japan were investigated to construct isotope biogeochemical and ecological structure for assessing fate and transfer of organic matter, and food web structure. The isotopic framework of the ecosystem was successfully described in aδ15N–δ13C map. In this estuary the variations of isotope ratios of biogenic substances were clearly explained by the mixing of land-derived organic matter, and marine-derived organic matter.A trophic-level effect of15N enrichment was clearly observed. Organisms were classified into three groups depending upon the contribution of land-derived organic matter in a food chain. Almost all biota except mollusca in the lagoon depend on organic matter of marine origin. The contributions of both land and marine organic matter were comparable for mollusca in the lagoon.
影响因子：
5
作者：
DENIRO, MJ;EPSTEIN, S
通讯作者：
EPSTEIN, S