Hairston–Smith–Slobodkin hypothesis
E496569
The Hairston–Smith–Slobodkin hypothesis is an influential ecological theory proposing that predators keep herbivore populations in check, allowing plant biomass to flourish and helping explain why the world is "green."
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hairston–Smith–Slobodkin hypothesis canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5122242 — 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: Hairston–Smith–Slobodkin hypothesis Context triple: [Lawrence B. Slobodkin, notableConcept, Hairston–Smith–Slobodkin hypothesis]
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A.
Isle Royale wolf–moose study
The Isle Royale wolf–moose study is a landmark long-term ecological research project that examines predator–prey dynamics between wolves and moose on Isle Royale National Park in Lake Superior.
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B.
Farrer hypothesis
The Farrer hypothesis is a theory of New Testament source criticism that proposes the Gospel of Mark was written first, Matthew used Mark, and Luke used both Mark and Matthew, thereby dispensing with the need for a separate Q source.
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C.
The Theory of Island Biogeography
The Theory of Island Biogeography is a foundational ecological work that explains how species richness on islands is shaped by the balance between immigration and extinction, profoundly influencing modern conservation biology and biogeography.
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D.
Stability and Complexity in Model Ecosystems
Stability and Complexity in Model Ecosystems is a landmark 1973 book by theoretical ecologist Robert May that uses mathematical models to challenge the assumption that more complex ecosystems are inherently more stable.
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E.
Unified Neutral Theory of Biodiversity and Biogeography
Unified Neutral Theory of Biodiversity and Biogeography is an influential ecological theory proposing that biodiversity patterns and species abundances can be explained by assuming ecological equivalence among individuals regardless of species.
- 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: Hairston–Smith–Slobodkin hypothesis Target entity description: The Hairston–Smith–Slobodkin hypothesis is an influential ecological theory proposing that predators keep herbivore populations in check, allowing plant biomass to flourish and helping explain why the world is "green."
-
A.
Isle Royale wolf–moose study
The Isle Royale wolf–moose study is a landmark long-term ecological research project that examines predator–prey dynamics between wolves and moose on Isle Royale National Park in Lake Superior.
-
B.
Farrer hypothesis
The Farrer hypothesis is a theory of New Testament source criticism that proposes the Gospel of Mark was written first, Matthew used Mark, and Luke used both Mark and Matthew, thereby dispensing with the need for a separate Q source.
-
C.
The Theory of Island Biogeography
The Theory of Island Biogeography is a foundational ecological work that explains how species richness on islands is shaped by the balance between immigration and extinction, profoundly influencing modern conservation biology and biogeography.
-
D.
Stability and Complexity in Model Ecosystems
Stability and Complexity in Model Ecosystems is a landmark 1973 book by theoretical ecologist Robert May that uses mathematical models to challenge the assumption that more complex ecosystems are inherently more stable.
-
E.
Unified Neutral Theory of Biodiversity and Biogeography
Unified Neutral Theory of Biodiversity and Biogeography is an influential ecological theory proposing that biodiversity patterns and species abundances can be explained by assuming ecological equivalence among individuals regardless of species.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
ecological hypothesis
ⓘ
top-down control hypothesis ⓘ trophic theory ⓘ |
| addressesQuestion |
what processes maintain high plant biomass in many ecosystems
ⓘ
why herbivores do not consume all available plant biomass ⓘ |
| alsoKnownAs |
HSS hypothesis
ⓘ
green world hypothesis ⓘ |
| appliesTo |
aquatic ecosystems
ⓘ
terrestrial ecosystems ⓘ |
| assumes |
competition among plants is more important than herbivory in limiting plant biomass
ⓘ
plants are not strongly limited by herbivory at the ecosystem scale ⓘ predators are effective in reducing herbivore densities ⓘ |
| contrastsWith | purely bottom-up resource control models ⓘ |
| coreClaim |
herbivores are kept below the level at which they can consume all available plant biomass
ⓘ
plant biomass remains relatively high because herbivores are controlled by predators ⓘ predators limit herbivore populations ⓘ |
| criticizedFor |
assuming uniform predator control across systems
ⓘ
oversimplifying food web complexity ⓘ underestimating the role of bottom-up forces ⓘ |
| emphasizes | top-down regulation in food webs ⓘ |
| explains | why terrestrial ecosystems appear green ⓘ |
| field | ecology ⓘ |
| focusesOn | interactions among plants, herbivores, and predators ⓘ |
| hasImplication |
increased herbivore abundance can reduce plant biomass
ⓘ
predator conservation can indirectly protect plant communities ⓘ removal of predators can increase herbivore abundance ⓘ |
| historicalSignificance | helped shift ecological focus from competition alone to multi-trophic interactions ⓘ |
| influencedConcept |
top-down vs bottom-up control debate
ⓘ
trophic cascades ⓘ |
| influencedField |
community ecology
ⓘ
food web theory ⓘ trophic ecology ⓘ |
| namedAfter |
Frederick E. Smith
ⓘ
linked to:
Frederic E. Smith
Lawrence B. Slobodkin ⓘ Nelson G. Hairston Sr. ⓘ |
| proposedInPublication | “Community Structure, Population Control, and Competition” ⓘ |
| publicationYear | 1960 ⓘ |
| publishedInJournal | The American Naturalist ⓘ |
| relatedTo |
bottom-up control theory
ⓘ
exploitation ecosystems hypothesis ⓘ top-down control theory ⓘ trophic cascade hypothesis ⓘ |
| status | influential but debated in modern ecology ⓘ |
| subfield |
community ecology
ⓘ
population ecology ⓘ |
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: Hairston–Smith–Slobodkin hypothesis Description of subject: The Hairston–Smith–Slobodkin hypothesis is an influential ecological theory proposing that predators keep herbivore populations in check, allowing plant biomass to flourish and helping explain why the world is "green."
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.