https://w3id.org/np/RAJeXbNWgHkxg8ndTLvAvPrGVEU0hvvy3ZXMiuIk0sRtI/Head https://w3id.org/np/RAJeXbNWgHkxg8ndTLvAvPrGVEU0hvvy3ZXMiuIk0sRtI http://www.nanopub.org/nschema#hasAssertion https://w3id.org/np/RAJeXbNWgHkxg8ndTLvAvPrGVEU0hvvy3ZXMiuIk0sRtI/assertion https://w3id.org/np/RAJeXbNWgHkxg8ndTLvAvPrGVEU0hvvy3ZXMiuIk0sRtI http://www.nanopub.org/nschema#hasProvenance https://w3id.org/np/RAJeXbNWgHkxg8ndTLvAvPrGVEU0hvvy3ZXMiuIk0sRtI/provenance https://w3id.org/np/RAJeXbNWgHkxg8ndTLvAvPrGVEU0hvvy3ZXMiuIk0sRtI http://www.nanopub.org/nschema#hasPublicationInfo https://w3id.org/np/RAJeXbNWgHkxg8ndTLvAvPrGVEU0hvvy3ZXMiuIk0sRtI/pubinfo https://w3id.org/np/RAJeXbNWgHkxg8ndTLvAvPrGVEU0hvvy3ZXMiuIk0sRtI http://www.w3.org/1999/02/22-rdf-syntax-ns#type http://www.nanopub.org/nschema#Nanopublication https://w3id.org/np/RAJeXbNWgHkxg8ndTLvAvPrGVEU0hvvy3ZXMiuIk0sRtI/assertion https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test http://purl.org/dc/terms/description Species with adult body mass and population density: OLS of log10 density on log10 mass (a); then OLS of log10 density on log10 mass plus omnivore and carnivore dummies against herbivores (b), 95% t-intervals. https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test http://www.w3.org/1999/02/22-rdf-syntax-ns#type https://w3id.org/delphi/ontology/Assessment https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test http://www.w3.org/2000/01/rdf-schema#comment Measured: -0.7407 slope of log10 density (n/km2) on log10 body mass (g) (n = 947, 95% CI [-0.782, -0.700]; carnivore-vs-herbivore coefficient -1.136 [-1.314, -0.959] (n=746)). Interpretation: Wallace wrote of animals; PanTHERIA covers mammals only, so the test is of the claim restricted to mammals, with 'abundance' read as population density (individuals per km2). Eagles, lions, pigeons and antelopes are illustrations, not the scope. Phylogenetic non-independence is not corrected for; the claim is about the cross-species pattern. https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test http://www.w3.org/2000/01/rdf-schema#label Claim test of wallace1858-02: supports, confidence 0.85 https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test http://www.w3.org/2000/01/rdf-schema#seeAlso https://github.com/fractastical/delphisci/blob/bf2af6ee0a84e23ffa6414ad7a0a50a8c276506e/test-data/claim-tests/evolution-after-darwin/wallace1858-02/result.json https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test http://www.w3.org/ns/prov#wasAttributedTo https://w3id.org/delphi/resource/agent/delphisci-claim-tester-claude-fable-5-1 https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/admissibleDatasets Planned datasets: pantheria-1.0 https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/assessmentType claim-test/0.1.0 https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/dataKind biological https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/disconfirmingObservation Neither (a) nor (b): refutes. Exactly one: mixed. Fewer than 200 species with density, mass and trophic level: inconclusive. https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/evidenceAgainst Abundance is read as population density; PanTHERIA density values are compiled from heterogeneous field studies with no correction for phylogeny or study method. https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/evidenceAgainst Mammals only, so the test covers the claim restricted to one class; Wallace's scope was animals. https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/evidenceAgainst The body-mass slope is Damuth's rule restated; the trophic-level coefficient is the part specific to Wallace's carnivore/herbivore sentence. https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/expectedObservation In PanTHERIA species with both density and adult body mass: (a) OLS slope of log10 density on log10 mass is negative with 95% CI excluding 0; and (b) in log10 density ~ log10 mass + trophic level (factor: 1 herbivore, 2 omnivore, 3 carnivore), the carnivore-versus-herbivore coefficient is negative with 95% CI excluding 0. Both: supports. https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/failCriterion Neither (a) nor (b): refutes. Exactly one: mixed. Fewer than 200 species with density, mass and trophic level: inconclusive. https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/hasConfidence 0.85 https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/hasEvidence https://w3id.org/delphi/resource/evidence/wallace1858-02--claim-test--dataset-1 https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/hasVerdict supports https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/hypothesis If large animals cannot be as abundant as small ones and carnivores must be less numerous than herbivores, then across mammal species population density falls with body mass, and carnivores have lower density than herbivores at the same body mass. https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/inferenceMethod Species with adult body mass and population density: OLS of log10 density on log10 mass (a); then OLS of log10 density on log10 mass plus omnivore and carnivore dummies against herbivores (b), 95% t-intervals. https://w3id.org/delphi/resource/assessment/wallace1858-02--claim-test https://w3id.org/delphi/ontology/passCriterion In PanTHERIA species with both density and adult body mass: (a) OLS slope of log10 density on log10 mass is negative with 95% CI excluding 0; and (b) in log10 density ~ log10 mass + trophic level (factor: 1 herbivore, 2 omnivore, 3 carnivore), the carnivore-versus-herbivore coefficient is negative with 95% CI excluding 0. 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