Establishment of ecosystem monitoring method using a stable isotope ratios of eggshells of birds flying to the brackish lake

咸湖鸟类蛋壳稳定同位素比值生态系统监测方法的建立

• 批准号: 21651009
• 负责人: SETO Koji
• 金额: $ 1.92万
• 依托单位: Shimane University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21651009/
• 关键词: 鳥類; 卵殻; カワウ; 酸素・炭素同位体比; 中海; 濤沸湖; 影響評価手法; 生態系モニタリング手法

In this study, the measurement of carbon isotope oxygen of eggshell carbonate, even if it has not been obtained reliable measurement due to the aging of the mass spectrometer, in a state powdered eggshell carbonate for leave to future has been saved. However, we have proposed to on the method of sample processing. Structure and thickness of the shell is characterized by species were observed. Some species can be identified in this character. Total organic carbon, total nitrogen, total sulfur content were measured in the CNS elemental analyzer using the powder of eggshell carbonate for isotope analysis. In addition, we calculated the TOC/TN ratio from these values. In addition, the XRF elemental analysis was measured about some element. That are valid in the major element, the element was Na, Mg and Ca. These tool are differences by species, but, species differences were observed by combining all factor. Therefore, it is also possible to identify the species of eggshell from these analyzes, which species can be identified to some extent by sampling only fragments. This will be worth that opens up the possibility of as a monitoring tool, will continue to research further.

在本研究中，测定蛋壳碳酸盐的碳同位素氧，即使由于质谱仪的老化而未能得到可靠的测定，也以蛋壳碳酸盐粉末的状态保存下来以供将来使用。不过，我们对样品处理的方法提出了建议。壳的结构和厚度是按物种特征进行观察的。一些物种可以通过这个特征来识别。使用蛋壳碳酸盐粉末进行同位素分析，在 CNS 元素分析仪中测定总有机碳、总氮、总硫含量。此外，我们还根据这些值计算了 TOC/TN 比率。另外，对一部分元素进行XRF元素分析测定。有效元素主要为Na、Mg、Ca。这些工具是按物种差异的，但是，通过结合所有因素来观察物种差异。因此，也可以从这些分析中识别蛋壳的种类，仅通过对碎片取样就可以在一定程度上识别哪些种类。这将值得作为监控工具开辟可能性，将继续进一步研究。

项目成果

中海本庄水域における堤防開削による水質環境の変化

中海本庄水域堤防造成的水质环境变化

• 发表时间: 2009
• 作者: 板橋秀一;鵜野伊津志;大原利;瀬戸浩二・武石祐一郎・山口啓子・倉田健悟
• 通讯作者: 瀬戸浩二・武石祐一郎・山口啓子・倉田健悟

Anthropogenic changes due to partial dike removal in the Honjo Area of Nakaumi Lagoon, Southwest Japan.

日本西南部中海泻湖本庄地区部分堤坝拆除造成的人为变化。

• 发表时间: 2009
• 作者: Koji Seto;David L.Dettman;Kengo Kurata;Keiko Yamaguchi;To shiaki Irizuki;Hiroyuki Takata
• 通讯作者: Hiroyuki Takata

中海本庄水域における排水機場跡地を利用した潮通しの効果と物質輸送

中海本庄水域排水泵站旧址的潮汐流和物质输送的影响

• 发表时间: 2011
• 作者: Wada;M;Dan;Z;Do H-K;Nomura;H;Kunihiro;T;Nishimura;M;Koture;K;Ohwada;K;Tsutsumi;K;瀬戸浩二・山口啓子
• 通讯作者: 瀬戸浩二・山口啓子

汽水域研究の現状-中海の研究から-

苦咸水的研究现状 - 来自中海的研究 -

• 发表时间: 2010
• 作者: T. Maeda;T. Okamoto;Y. Fukushige;T. Asada;瀬戸浩二
• 通讯作者: 瀬戸浩二

The recent climatic change of subarctic zone recorded in lake sediments in Hokkaido, Japan

日本北海道湖泊沉积物记录的亚北极地区近期气候变化

• 发表时间: 2010
• 作者: Koji Seto;Hiroyuki Takata;Makoto Saito;Kota Katsuki;Takeshi Sonoda;Toshihumi Kawajiri;Takaaki Watanabe
• 通讯作者: Takaaki Watanabe