Whole-River Fertilization Stimulates Fish Production in an Arctic Tundra River

Increased growth rates for adult and young-of-the-year Arctic grayling (Thymallus arcticus) were measured after the addition of fertilizer to an oligotrophic Alaskan tundra river. The strongest response to the fertilization was seen in young-of-the-year grayling; the adult response was more variable. Whole-river phosphorus fertilization of the Kuparuk River, Alaska, during 1985–90 resulted in a 1.4- to 1.9-fold increase in the size of age 0+ fish and a 1.5- to 2.4-fold increase in the weight gain of adult grayling in some years. Neutral lipid storage in adult grayling was increased 1.3- to 3.4-fold in the fertilized zone compared with that in fish from the control zone. There was no detectable difference between the zones in gonad mass, percent lipid in eggs, or egg size. These results suggest that autochthonous production is an important energy source for fish in tundra streams and that nutrient limitation of stream ecosystems affects the highest trophic levels. These findings have importance for underst...

[1]  A. Hershey,et al.  The trophic significance of epilithic algal production in a fertilized tundra river ecosystem , 1993 .

[2]  Lawrence M. Dill,et al.  Position Choice by Drift-Feeding Salmonids: Model and Test for Arctic Grayling (Thymallus arcticus) in Subarctic Mountain Streams, Interior Alaska , 1990 .

[3]  T. Simonson,et al.  Critical Stream Velocities for Young‐of‐Year Smallmouth Bass in Relation to Habitat Use , 1990 .

[4]  B. Ward,et al.  Increased Juvenile Salmonid Growth by Whole-River Fertilization , 1990 .

[5]  D. Beauchamp.  Movements, Habitat Use, and Spawning Strategies of Arctic Grayling in a Subalpine Lake Tributary , 1990 .

[6]  T. Bolger,et al.  The selection of suitable indices for the measurement and analysis of fish condition , 1989 .

[7]  A. Hershey,et al.  Nutrient Incluence on a Stream Grazer: Orthocladius Microcommunities Respond to Nutrient Input , 1988 .

[8]  A. Hershey,et al.  Effect of a Caddisfly on Black Fly Density: Interspecific Interactions Limit Black Flies in an Arctic River , 1988, Journal of the North American Benthological Society.

[9]  Ohman.  Sources of variability in measurements of copepod lipids and gut fluorescence in the California Current coastal zone , 1988 .

[10]  P. Slaney,et al.  Experimental Enrichment of a Coastal Stream in British Columbia: Effects of Organic and Inorganic Additions on Autotrophic Periphyton Production , 1987 .

[11]  James D. Hall,et al.  Influence of habitat manipulations on interactions between cutthroat trout and invertebrate drift. [Salmo clarki] , 1986 .

[12]  Allan Stewart-Oaten,et al.  ENVIRONMENTAL IMPACT ASSESSMENT: "PSEUDOREPLICATION" IN TIME?' , 1986 .

[13]  J. Roff,et al.  Trout Biomass and Habitat Relationships in Southern Ontario Streams , 1986 .

[14]  A. Hershey,et al.  Transformation of a Tundra River from Heterotrophy to Autotrophy by Addition of Phosphorus , 1985, Science.

[15]  A. Scott.  Distribution, Growth, and Feeding of Postemergent Grayling Thymallus thymallus in an English River , 1985 .

[16]  P. Calow,et al.  Fish Energetics: New Perspectives , 1985 .

[17]  R. Wootton.  Energetics of Reproduction , 1985 .

[18]  S. Hurlbert.  Pseudoreplication and the Design of Ecological Field Experiments , 1984 .

[19]  J. Laperriere.  Alkalinity, Discharge, Average Velocity, and Invertebrate Drift Concentration in Subarctic Alaskan Streams , 1983 .

[20]  J. Hobbie,et al.  A continuous‐flow periphyton bioassay: Tests of nutrient limitation in a tundra stream1 , 1983 .

[21]  R. G. Randall.  Emergence, population densities, and growth of salmon and trout fry in two New Brunswick streams , 1982 .

[22]  M. L. Murphy,et al.  Effects of canopy modification and accumulated sediment on stream communities. , 1981 .

[23]  Short-term Rearing of Pink Salmon (Oncorhynchus gorbuscha) Fry: Effect on Survival and Biomass of Returning Adults , 1981 .

[24]  J. Newbold,et al.  The Limiting Role of Phosphorus in a Woodland Stream Ecosystem: Effects of P Enrichment on Leaf Decomposition and Primary Producers , 1981 .

[25]  C. D. Mcallister,et al.  Enhancement of Sockeye Salmon (Oncorhynchus nerka) by Lake Fertilization in Great Central Lake: Summary Report , 1978 .

[26]  J. Stockner,et al.  Enhancement of Autotrophic Production by Nutrient Addition in a Coastal Rainforest Stream on Vancouver Island , 1978 .

[27]  J. C. Mason.  Response of Underyearling Coho Salmon to Supplemental Feeding in a Natural Stream , 1976 .

[28]  R. Parker.  Size Selective Predation Among Juvenile Salmonid Fishes in a British Columbia Inlet , 1971 .

[29]  H. Egglishaw.  The Quantitative Relationship Between Bottom Fauna and Plant Detritus in Streams of Different Calcium Concentrations , 1968 .

[30]  R. Disney.  Observations on a zoonosis: leishmaniasis in British Honduras. , 1968 .

[31]  C. E. Warren,et al.  Trout production in an experimental stream enriched with sucrose. , 1964 .

[32]  E. Cooper,et al.  An Ecological Comparison of Six Populations of Brown Trout (Salmo trutta) , 1962 .

[33]  A. G. Huntsman.  Fertility and Fertilization of Streams , 1948 .