INCREASED JUVENILE SALMONID GROWTH BY WHOLE-RIVER FERTILIZATION

被引：96

作者：

JOHNSTON, NT ^{[1
]}

PERRIN, CJ ^{[1
]}

SLANEY, PA ^{[1
]}

WARD, BR ^{[1
]}

机构：

[1] LIMNOTEK RES & DEV INC,VANCOUVER V6R 2X3,BC,CANADA

来源：

CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES | 1990年 / 47卷 / 05期

关键词：

D O I：

10.1139/f90-099

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Nutrient concentrations, periphyton standing crop and size of steelhead trout Oncorhynchus mykiss, and coho salmon O. kisutch fry increased after the fertilization of a nutrient-deficient stream with inorganic P and N. Whole-river fertilization of the Keogh River, British Columbia, during 1983-86 to increase summer average nutrient concentrations from <1 μg P.L-1 and 25 μg N.L-1 to 10-15 μg P.L-1 and 30-100 μg N.L-1 resulted in 5- to 10-fold increases in periphyton standing crops on artificial substrata and 1.4-2.0-fold increases in late-September salmonid fry weights. Diatoms and chlorophytes dominated the algal periphyton on artificial substrata at fertilized sites. -from Authors

引用

页码：862 / 872

页数：11

共 61 条

[1] INFLUENCES OF DIET ON THE LIFE HISTORIES OF AQUATIC INSECTS [J].