What question did this study set out to answer?

To identify whether nitrogen or phosphorus acts as the primary limiting nutrient governing algal growth and eutrophication in coastal marine environments.

March 12, 1971Science

Nitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment

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Authors

JRJohn H. RytherNOAA National Marine Fisheries Service WDWilliam M. DunstanSkidaway Institute of Oceanography

Discussion

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Implication

Experimental analysis reveals nitrogen limitation of algal blooms in coastal waters, indicating that phosphorus control strategies alone will not curb marine eutrophication.

Key Points

To identify whether nitrogen or phosphorus acts as the primary limiting nutrient governing algal growth and eutrophication in coastal marine environments.
Measured the environmental distribution and relative ratios of inorganic nitrogen and phosphorus in coastal waters.
Conducted nutrient enrichment bioassays to evaluate coastal algal growth responses.
Nitrogen is the critical limiting nutrient for coastal algal proliferation, with phosphate routinely present at roughly twice the concentration that algae can assimilate.
Surplus phosphorus arises from low nitrogen-to-phosphorus ratios in terrestrial runoff and human waste, as well as faster phosphorus regeneration relative to ammonia during organic matter decay.
Banning phosphate in detergents will not mitigate coastal eutrophication, and substituting phosphate with nitrogen-based compounds like nitrilotriacetic acid may worsen algal blooms.

Cite This Study

Ryther et al. (1971) studied this question.

synapsesocial.com/papers/69ffbbd56018b8d0892d94bc https://doi.org/10.1126/science.171.3975.1008

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March 12, 1971Science

Nitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment

View Full Paper

Ask AI

Bookmark

Authors

JRJohn H. RytherNOAA National Marine Fisheries Service WDWilliam M. DunstanSkidaway Institute of Oceanography

Discussion

Member takes

Implication

Experimental analysis reveals nitrogen limitation of algal blooms in coastal waters, indicating that phosphorus control strategies alone will not curb marine eutrophication.

Key Points

To identify whether nitrogen or phosphorus acts as the primary limiting nutrient governing algal growth and eutrophication in coastal marine environments.
Measured the environmental distribution and relative ratios of inorganic nitrogen and phosphorus in coastal waters.
Conducted nutrient enrichment bioassays to evaluate coastal algal growth responses.
Nitrogen is the critical limiting nutrient for coastal algal proliferation, with phosphate routinely present at roughly twice the concentration that algae can assimilate.
Surplus phosphorus arises from low nitrogen-to-phosphorus ratios in terrestrial runoff and human waste, as well as faster phosphorus regeneration relative to ammonia during organic matter decay.
Banning phosphate in detergents will not mitigate coastal eutrophication, and substituting phosphate with nitrogen-based compounds like nitrilotriacetic acid may worsen algal blooms.

Cite This Study

Ryther et al. (1971) studied this question.

synapsesocial.com/papers/69ffbbd56018b8d0892d94bc https://doi.org/10.1126/science.171.3975.1008

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