報告書番号

U86012

タイトル（和文）

ホンダワラ類海藻の安定元素濃度の種間比較

タイトル（英文）

INTERSPECIFIC COMPARISON OF CONCENTRATIONS OF SOME STABLE ELEMENTS IN ALGAE OF THE FAMILY SARGASSACEAE

概要 （図表や脚注は「報告書全文」に掲載しております）

北海道小樽市忍路湾，宮崎県女川町女川湾，千葉県勝浦市鵜原地先および福岡県津屋崎町地崎の４地点から，合計１４種類のホンダワラ類海藻を採取し，原子吸光法によって４安定元素の分析を行って濃度の種間差を検討した。１．同一地点，同一時期の試料中で，元素濃度最大種と最小種の濃度比は２倍以上あることが普通で，最高１４倍に達した。２．ウミトラノオはホンダワラ類のうちでも，コバルト，セシウム，マンガン濃度が最も高いものに属することが認められた。

概要 （英文）

CONCENTRATION OF THE STABLE ELEMENTS COBALT,STRONTIUM,CESIUM AND MANGANESE WERE ANALYZED BY MEANS OF THE ATOMIC ABSORPTION SPECTROSCOPY IN 14 ALGAL SPECIES OF THE FAMILY SARGASSACEAE COLLECTED FROM 4 LOCATIONS IN JAPAN,AND THE INTERSPECIFIC DIFFERENCE IN THE CONCENTRATIONS WAS DIFFERENCE IN THE CONCENTRATIONS WAS DISCUSSED. RESULTS OBTAINED ARE SUMMARIZED AS FOLLOWS: 1.RATIO OF MAXIMUM TO MINIMUMCONCENTRATIONS BETWEEN SPECIES COLLECTED AT A SINGLE SITE ON A SAMPLING DATE COULD REACH AS HIGH VALUE AS 14. RATIOS GREATER THAN 2 WERE COMMON. 2.SPECIES WERE RANKED BY THE ORDER OF DECREASING CONCENTRATION FOR COBALT,CESIUM AND MANGANESE,AND THE RANKING WAS COMPARED AMONG THE DIFFERENT SAMPLING OCCASIONS AND WITH SOME LITERATURE DATA,IN ORDER TO FINDANY SPECIES WHICH HAVE A CONSISTENT TENDENCY SHOWING EITHER HIGHER OR LOWER CONCENTRATION THAN OTHER. UMITORANOO ,SARGASSUM THUNBERGII,WAS FOUND TO BE AMONG SPECIES WITH THE HIGHEST CONCENTRATION FOR EACH OF THE3 ELEMENTS COMPARED.

報告者

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