Item type |
デフォルトアイテムタイプ(フル)(1) |
公開日 |
2009-11-16 |
タイトル |
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タイトル |
Status of Organic and Inorganic Nutrients in Waters and Sediments at the Habitat of the Mangrove Sesarmid Crabs from the Ryukyu Islands, Japan |
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言語 |
en |
作成者 |
Islam, Md. Sirajul
Shokita, Shigemitsu
Mfilinge, Prosper L.
Tsuchiya, Makoto
土屋, 誠
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アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Mangrove swamps |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
sesarmid crabs |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
habitat |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
water |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
sediment |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
total organic carbon |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
inorganic nutrient |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
carbon/nitrogen ratios |
内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
To estimate the relative importance of mangrove swamps for sesarmids habitat, total\norganic carbon (TOC) and inorganic nutrients in water, and the sediment C/N ratios were\ndetermined from three different sites of the Ryukyu Islands: the Shira River mangrove\nswamp at Iriomote Island, the Nuha River mangrove swamp at Okinawa Main Island, and\nthe Nagura River mangrove swamp at Ishigaki Island, during December 2000, August 2001,\nand September 2002, respectively. The concentrations of total organic carbon in mangrove waters were 1.28, 1.52 and 0.60 ppm in the Shira, Nuha and Nagura rivers, respectively. The concentration of inorganic nutrients were determined from those mangrove waters are sodium (Na^+), potassium (K^+), ammonium (NH^+_4), chlorine (Cl^-), fluorine (F^-), bromine (Br^-), nitrate (NO^-_3), phosphate (PO^-2_4) and sulfate (SO^-2_4). No satisfactory explanation was found for the high concentrations of sodium and chlorine. The mangrove sediments C/N ratios were 17.9, 12.8 and 25.2 in the Shira, Nuha and Nagura rivers, respectively. The C/N ratio of Nuha river sediment was lower than that of the Shira and Nagura river, indicating higher nutritional value because of many organic matters decomposed here. Sediments from three mangroves had a mean C/N ratio of 18.6, indicating lower C/N ratios could be a richer source of nitrogen, which is regular ingestion by sesarmid crabs. Significant differences (P<0.0001) were found among the TOC concentrations in mangrove waters and C/N ratios in mangrove sediments from these three sites. |
内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
紀要論文 |
出版者 |
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言語 |
ja |
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出版者 |
琉球大学理学部 |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ |
departmental bulletin paper |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
識別子 |
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識別子 |
http://hdl.handle.net/20.500.12000/13167 |
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識別子タイプ |
HDL |
収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0286-9640 |
収録物識別子 |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AN00250774 |
収録物名 |
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言語 |
ja |
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収録物名 |
琉球大学理学部紀要 |
収録物名 |
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言語 |
en |
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収録物名 |
Bulletin of the College of Science. University of the Ryukyus |
書誌情報 |
号 78,
p. 327-356,
発行日 2004-09
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