Eutrophication of agricultural streams: defining nutrient concentrations to protect ecological condition

被引：30

作者：

Chambers, Patricia A. ^{[1
]}

Vis, C. ^{[1
,2
]}

Brua, R. B. ^{[3
]}

Guy, M. ^{[4
]}

Culp, J. M. ^{[5
]}

Benoy, G. A. ^{[6
]}

机构：

[1] Environm Canada, Burlington, ON L7R 4A6, Canada

[2] Pk Canada, Cornwall, ON K6H 6S3, Canada

[3] Environm Canada, Saskatoon, SK S7N 3H5, Canada

[4] Environm Canada, Gatineau, PQ K1A 0H3, Canada

[5] Univ New Brunswick, Dept Biol, Fredericton, NB E3B 5A3, Canada

[6] Agr & Agri Food Canada, Fredericton, NB E3B 4Z7, Canada

来源：

WATER SCIENCE AND TECHNOLOGY | 2008年 / 58卷 / 11期

关键词：

aquatic ecosystems; criteria; eutrophication; nitrogen; phosphorus; standard;

D O I：

10.2166/wst.2008.815

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Inputs of nutrients (phosphorus, P, and nitrogen, N) to coastal and fresh waters can accelerate eutrophication, resulting in excessive aquatic plant growth, depletion of oxygen, and deleterious changes in abundance and diversity of organisms. Using long-term (similar to 1995-2005) monitoring data from agriculturally-dominated watersheds in southern Ontario and Quebec, Canada, we developed and tested several approaches for setting targets for N and P. Our research showed that it is possible to set scientifically-credible targets for total P and total N to protect ecological condition of streams in agricultural landscapes, and define achievable targets attainable following adoption of beneficial management practices.

引用

页码：2203 / 2210

页数：8

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