Long-term responses of the Kuparuk River ecosystem to phosphorus fertilization
A long-term stream fertilization experiment was performed to evaluate the potential eutrophication of an arctic stream ecosystem. During 16 years of summer phosphorus (H3PO4) fertilization, we observed a dramatic change in the community structure of the Kuparuk River on the North Slope of Alaska. A...
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| Veröffentlicht in: | Ecology (Durham) 2004-04, Vol.85 (4), p.939-954 |
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| container_title | Ecology (Durham) |
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| creator | Slavik, K. Peterson, B. J. Deegan, L. A. Bowden, W. B. Hershey, A. E. Hobbie, J. E. |
| description | A long-term stream fertilization experiment was performed to evaluate the potential eutrophication of an arctic stream ecosystem. During 16 years of summer phosphorus (H3PO4) fertilization, we observed a dramatic change in the community structure of the Kuparuk River on the North Slope of Alaska. A positive response to fertilization was observed at all trophic levels with increases in epilithic algal stocks, some insect densities, and fish growth rates. After approximately eight years of P fertilization, bryophytes (mosses) replaced epilithic diatoms as the dominant primary producers in the Kuparuk River. The moss impacted NH4
+uptake rates, benthic gross primary production, habitat structure, and insect abundance and species composition. This study documents the long-term changes in an arctic tundra stream in response to nutrient enrichment. Predicting stream ecosystem responses to chronic perturbation requires long-term observation and experiments. |
| doi_str_mv | 10.1890/02-4039 |
| format | Article |
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+uptake rates, benthic gross primary production, habitat structure, and insect abundance and species composition. This study documents the long-term changes in an arctic tundra stream in response to nutrient enrichment. Predicting stream ecosystem responses to chronic perturbation requires long-term observation and experiments.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>arctic stream</subject><subject>Bacillariophyceae</subject><subject>Biological and medical sciences</subject><subject>Bryophytes</subject><subject>Chlorophylls</subject><subject>community structure</subject><subject>ecosystem response</subject><subject>Fertilization</subject><subject>Fertilizers</subject><subject>Freshwater</subject><subject>Freshwater ecology</subject><subject>Freshwater ecosystems</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>grayling</subject><subject>insects</subject><subject>Kuparuk River, Alaska (USA)</subject><subject>Lotic systems</subject><subject>Marine ecology</subject><subject>Marine ecosystems</subject><subject>nutrient enrichment</subject><subject>Phosphorus</subject><subject>phosphorus fertilization</subject><subject>stream fertilization</subject><subject>Streams</subject><subject>Tundras</subject><issn>0012-9658</issn><issn>1939-9170</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNp1kV9rFTEQxYMoeK3iFxAMQvVpdSZ_NptHudRWvFTQ-uBTSLeTdq97N2uya7l-etNusSAYCHmY35w5c8LYc4S32Fh4B6JSIO0DtkIrbWXRwEO2AkBR2Vo3j9mTnLdQDqpmxU43cbisJko7niiPcciUeQx8uiL-aR59mn_wL90vSpzamPd5oh2fIh-vYi43zZkHSlPXd7_91MXhKXsUfJ_p2d17wM4-HJ2tT6rN5-OP6_ebqlVSFFM2KNRaBTRNo88bS8Uy1dYjGRTkW5I-nKM2RhpZe6HaUONFfWGVaTWCPGCvF9kxxZ8z5cntutxS3_uB4pydAIOyRlHAV_-A2zinoVhzAi0ILHYK9GaB2hRzThTcmLqdT3uH4G4ydSDcTaaFPLyT87n1fUh-aLt8j-taKCNM4cTCXXc97f8n547W3wWAarSyt-IvlqZtnmL62ySVBnm788ulHHx0_jKVud--CkAJWD6zKZv8AeB5lYc</recordid><startdate>200404</startdate><enddate>200404</enddate><creator>Slavik, K.</creator><creator>Peterson, B. 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Psychology</topic><topic>General aspects</topic><topic>grayling</topic><topic>insects</topic><topic>Kuparuk River, Alaska (USA)</topic><topic>Lotic systems</topic><topic>Marine ecology</topic><topic>Marine ecosystems</topic><topic>nutrient enrichment</topic><topic>Phosphorus</topic><topic>phosphorus fertilization</topic><topic>stream fertilization</topic><topic>Streams</topic><topic>Tundras</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Slavik, K.</creatorcontrib><creatorcontrib>Peterson, B. J.</creatorcontrib><creatorcontrib>Deegan, L. A.</creatorcontrib><creatorcontrib>Bowden, W. B.</creatorcontrib><creatorcontrib>Hershey, A. E.</creatorcontrib><creatorcontrib>Hobbie, J. 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After approximately eight years of P fertilization, bryophytes (mosses) replaced epilithic diatoms as the dominant primary producers in the Kuparuk River. The moss impacted NH4
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| source | Jstor Complete Legacy; Wiley Online Library |
| subjects | Animal and plant ecology Animal, plant and microbial ecology arctic stream Bacillariophyceae Biological and medical sciences Bryophytes Chlorophylls community structure ecosystem response Fertilization Fertilizers Freshwater Freshwater ecology Freshwater ecosystems Fundamental and applied biological sciences. Psychology General aspects grayling insects Kuparuk River, Alaska (USA) Lotic systems Marine ecology Marine ecosystems nutrient enrichment Phosphorus phosphorus fertilization stream fertilization Streams Tundras |
| title | Long-term responses of the Kuparuk River ecosystem to phosphorus fertilization |
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