Redfield ratio
E523536
The Redfield ratio is a canonical stoichiometric relationship describing the consistent atomic proportions of carbon, nitrogen, and phosphorus found in marine organic matter and dissolved nutrients in the ocean.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Redfield ratio canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5475906 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Redfield ratio Context triple: [Alfred C. Redfield, notableFor, Redfield ratio]
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A.
Redfield
Redfield is a surname of English origin borne by various notable individuals across fields such as politics, science, and the arts.
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B.
Sievers' law
Sievers' law is a historical phonological rule in Indo-European linguistics that explains the alternation between consonantal and vocalic forms of certain sounds (notably *y and *w) depending on the weight of the preceding syllable.
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C.
Bohr effect
The Bohr effect is a physiological phenomenon in which increases in carbon dioxide concentration and acidity reduce hemoglobin’s affinity for oxygen, thereby facilitating oxygen release to tissues.
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D.
Gibbs–Duhem equation
The Gibbs–Duhem equation is a fundamental thermodynamic relation that links changes in chemical potential, temperature, and pressure for multicomponent systems, ensuring consistency among intensive variables.
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E.
Saha ionization equation
The Saha ionization equation is a fundamental formula in astrophysics and plasma physics that relates the ionization state of a gas in thermal equilibrium to its temperature and pressure, crucial for understanding stellar atmospheres and spectra.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Redfield ratio Target entity description: The Redfield ratio is a canonical stoichiometric relationship describing the consistent atomic proportions of carbon, nitrogen, and phosphorus found in marine organic matter and dissolved nutrients in the ocean.
-
A.
Redfield
Redfield is a surname of English origin borne by various notable individuals across fields such as politics, science, and the arts.
-
B.
Sievers' law
Sievers' law is a historical phonological rule in Indo-European linguistics that explains the alternation between consonantal and vocalic forms of certain sounds (notably *y and *w) depending on the weight of the preceding syllable.
-
C.
Bohr effect
The Bohr effect is a physiological phenomenon in which increases in carbon dioxide concentration and acidity reduce hemoglobin’s affinity for oxygen, thereby facilitating oxygen release to tissues.
-
D.
Gibbs–Duhem equation
The Gibbs–Duhem equation is a fundamental thermodynamic relation that links changes in chemical potential, temperature, and pressure for multicomponent systems, ensuring consistency among intensive variables.
-
E.
Saha ionization equation
The Saha ionization equation is a fundamental formula in astrophysics and plasma physics that relates the ionization state of a gas in thermal equilibrium to its temperature and pressure, crucial for understanding stellar atmospheres and spectra.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
biogeochemical ratio
ⓘ
oceanographic concept ⓘ stoichiometric relationship ⓘ |
| acknowledges | regional deviations from canonical stoichiometry ⓘ |
| appliesPrimarilyTo | open ocean conditions ⓘ |
| appliesTo |
dissolved nutrients in the ocean
ⓘ
marine organic matter ⓘ |
| assumes | relatively constant elemental composition of marine organic matter ⓘ |
| characterizes |
average composition of dissolved inorganic nutrients in the open ocean
ⓘ
average composition of marine particulate organic matter ⓘ average composition of marine phytoplankton ⓘ |
| contrastedWith | variable stoichiometry in coastal and upwelling regions ⓘ |
| describes | stoichiometric relationship of carbon, nitrogen, and phosphorus in marine systems ⓘ |
| field |
biological oceanography
ⓘ
chemical oceanography ⓘ marine biogeochemistry ⓘ |
| hasApproximateMassRatio | C:N:P ≈ 41:7:1 ⓘ |
| hasCanonicalAtomicRatio | C:N:P = 106:16:1 ⓘ |
| hasCarbonToNitrogenRatio | C:N = 106:16 ⓘ |
| hasCarbonToPhosphorusRatio | C:P = 106:1 ⓘ |
| hasNitrogenToPhosphorusRatio | N:P = 16:1 ⓘ |
| hasTypicalUnit | molar ratio ⓘ |
| historicalPublicationYear | 1934 ⓘ |
| implies | fixed relationship between nutrient consumption and organic matter production in the open ocean ⓘ |
| influences |
design of ocean fertilization experiments
ⓘ
interpretation of nutrient uptake measurements ⓘ parameterization of ecosystem models ⓘ |
| namedAfter | Alfred C. Redfield ⓘ |
| refinedInPublicationYear | 1958 ⓘ |
| relatedTo |
biological pump
ⓘ
global carbon cycle ⓘ nitrogen cycle ⓘ nutrient limitation theory ⓘ phosphorus cycle ⓘ |
| supports | link between ocean nutrient inventories and biological processes ⓘ |
| usedFor |
constraining global biogeochemical models
ⓘ
estimating export production from nutrient data ⓘ estimating nutrient limitation in the ocean ⓘ interpreting ocean nutrient distributions ⓘ modeling marine primary production ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Redfield ratio Description of subject: The Redfield ratio is a canonical stoichiometric relationship describing the consistent atomic proportions of carbon, nitrogen, and phosphorus found in marine organic matter and dissolved nutrients in the ocean.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.