20th Century

1900–1999·century anchor

Calendar parent containing the pre-1950 bucket and the 1950s through 1990s decades. Useful for coarse 20th- vs 21st-century comparisons.

2,241publications730documents4datasets22stories

Synthesis

A grounded primer describing what was happening in the 20th Century — drawing on the distinctive concepts, species, and content below — will appear here when the era-primer pipeline ships. Today’s view is the raw evidence the synthesis will draw from.

Distinctive concepts — Research

Ranked by log-odds-ratio z-score — over-represented in this era vs. all other dated content, not just frequent overall. Drawn from publications and datasets only.

lithologic composition6 functionally referential communication5 inclusive fitness4 soil erosion4 tectonic overprints5 Pennsylvanian Period4 biostratigraphic correlation3 size at maturity3 glacial advances3 Laramide Orogeny3 deposition3 Desmoinesian age3 Missourian age3 Calvin cycle3 kin selection5 contact metamorphism3 functional responses3 polygamous mating system3 mesic resources3 reproductive suppression3

Distinctive concepts — Policy & community

Ranked by log-odds-ratio z-score — over-represented in this era vs. all other dated content, not just frequent overall. Drawn from community / policy documents only.

ecological consequences225 Priority Habitat Management Areas146 recreational activities149 land use planning177 tailing reclamation91 historic and cultural resources44

Distinctive species

Ranked by log-odds-ratio z-score — over-represented in this era vs. all other dated content, not just frequent overall.

fish and wildlife111 endangered species112 elk53 cattle51 game species52 cottonwood66

Distinctive protocols & methods

Ranked by log-odds-ratio z-score — over-represented in this era vs. all other dated content, not just frequent overall.

gastric-lavage (Ambystomatidae)3 Blumstein & Daniel transmission fidelity technique (Sciuridae)6 mark-recapture (Ambystomatidae)5 Factorial environmental stress experiment (Limnephilidae)3 Artificial nectar robbing3 focal animal sampling (Sciuridae)6

Distinctive places

Ranked by log-odds-ratio z-score — over-represented in this era vs. all other dated content, not just frequent overall.

Plumas National Forest70 Montrose94 Arapahoe County45 Mt. Washington91 New Mexico105 Taylor Park Reservoir40

Distinctive stakeholders

Ranked by log-odds-ratio z-score — over-represented in this era vs. all other dated content, not just frequent overall.

Colorado Department of Health46Colorado Department of Highways29Soil Conservation Service29Department of Commerce18Division of Wildlife33AMAX22Colorado Division of Water Resources