海洋環境が利尻島の1年目リシリコンブ現存量に与える影響
書誌事項
- タイトル別名
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- Effect of Marine Environment on Annual Changes in First Year Biomass of Saccharine japonica var. ochotensis at Rishiri Island, Japan
- カイヨウ カンキョウ ガ リジリトウ ノ 1ネンメ リシリコンブ ゲンソンリョウ ニ アタエル エイキョウ
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抄録
Effect of marine environment on annual changes in first year biomass of Saccharina japonica var. ochotensis in summer (hereinafter referred to as Kelp biomass) were investigated from 1998 to 2010, at Rishiri Island, Japan. Relatively large fluctuations were observed for both Kelp biomass (mean 257g m^<-2>; range 0-1571g m^<-2>) and sea urchin biomass (mean 153g m^<-2>; range 40-348g m^<-2>) during study period. The correlation coefficient between Kelp biomass and sea urchin biomass was negative (r=-0.34, n=12, p=0.28). The relationship between Kelp biomass and each temperature from January to April was unclear. DIN (NO_3-N+NO_2-N) concentration decreased from January to April, on the other hand PO_4-P concentration was relatively uniform. Changes in the NP ratio from January to April indicated that exhaustion of DIN occurred in March and April. The correlation coefficient between Kelp biomass and DIN concentration in March was significantly positive (r=0.83, n=9, p<0.01). These results suggest that DIN concentration in March is limiting factor of Kelp growth at Rishiri Island. We use a generalized linear model (GLM) to statistically analyze the field survey data. The model using DIN concentration in March and sea urchin biomass as explanatory variable was selected by AIC. This result suggests that DIN concentration in March and sea urchin biomass are important for changes in first year biomass of Kelp at Rishri Island.
収録刊行物
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- 日本水産工学会誌
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日本水産工学会誌 51 (1), 39-45, 2014
日本水産工学会
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詳細情報 詳細情報について
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- CRID
- 1390282680841278464
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- NII論文ID
- 110009833351
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- NII書誌ID
- AN10278554
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- ISSN
- 21897131
- 09167617
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- NDL書誌ID
- 025728266
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可