Ecosystem development and mechanism for sustaining biological diversity at lakes in rocky area of Antarctic

南极岩石区湖泊生态系统发展及生物多样性维持机制

• 批准号: 23651006
• 负责人: YAMAMURO Masumi
• 金额: $ 2.33万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23651006/
• 关键词: 極域環境監視; 南極大陸; 栄養塩; 光; 炭素安定同位体比; ラン藻類; 湖沼; コケ類; 間隙水; 南極; 貧栄養; 生物生産; 安定同位体比; 窒素; 藍藻類

We examined the controlling factors on the development of microbial mat constituted with micro algae, cyanobacteria and moss, on the bottoms of oligotrophic lakes at rocky area of Soya Coast, Antarctic. Nitrogen stable isotope ratios of the mats suggested that nitrogen was supplied through nitrogen fixation by cyanobacteria to the microbial mat communities.Carbon stable isotope ratio of the mats suggested that photosynthetic activity decreased as the amount of light (PAR: Photosynthetically active radiation, UV: Ultra Violet) increased. The amount of both PAR and UV showed negative correlation with the drainage areas, suggesting that the dissolved materials supplied from drainage basin decreased the amount of light.

研究了南极索亚海岸岩石区贫营养湖泊底部微藻、蓝藻和苔藓组成的微生物垫发育的控制因素。氮稳定同位素比值表明氮主要通过蓝藻固氮作用提供给微生物垫群落，碳稳定同位素比值表明光合活性随光照（PAR：光合有效辐射，UV：紫外线）增加而降低。PAR和UV与流域面积呈负相关，表明流域提供的溶解物质减少了光照量。

项目成果

湖底間隙水と湖水の栄養塩から見た南極湖沼の多様性

从湖底孔隙水和湖水营养盐看南极湖泊的多样性

• 发表时间: 2011
• 作者: Hori;M.;Tanabe;Y.;Kudoh;S.,Yamamuro;M.;Yasuto Miyake;H.Matsuzaki;田邊優貴子・堀誠・内田雅己・大園享司・山室真澄・工藤栄;H.Matsuzaki;H. L. TANAKA;田邊優貴子・内田雅巳・大園亨司・山室真澄・工藤栄
• 通讯作者: 田邊優貴子・内田雅巳・大園亨司・山室真澄・工藤栄

Production and nutrient cycling in Antarctic lakes deciphered from stable isotope measurements

通过稳定同位素测量破译南极湖泊的生产和养分循环

• 发表时间: 2012
• 作者: Hori;M.;Tanabe;Y.;Kudoh;S.,Yamamuro;M.
• 通讯作者: M.

南極湖沼生態系を支える湖底の栄養塩

支持南极湖泊生态系统的湖底营养物质

• 发表时间: 2012
• 作者: Hori;M.;Tanabe;Y.;Kudoh;S.,Yamamuro;M.;Yasuto Miyake;H.Matsuzaki;田邊優貴子・堀誠・内田雅己・大園享司・山室真澄・工藤栄
• 通讯作者: 田邊優貴子・堀誠・内田雅己・大園享司・山室真澄・工藤栄