GlottoScope

GlottoScope provides a visualisation of the combination of Agglomerated Endangerment Scale (AES) and Most Extensive Description of the languages of the world (but since descriptive status can only be reliably computed from Glottolog data for spoken L1 languages and sign languages, we only display these).

GlottoScope was designed and developed by Robert Forkel and Harald Hammarström in 2014. Comments and beta-testing were provided by a number of individuals including Hedvig Skirgård, Martin Haspelmath, Matti Miestamo, Mark Dingemanse, Lyle Campbell, Tapani Salminen and audiences at several demo sessions.

For more information see Harald Hammarström and Thom Castermans and Robert Forkel and Kevin Verbeek and Michel A. Westenberg and Bettina Speckmann 2018.

Agglomerated Endangerment Status

The Agglomerated Endangerment Status measures how endangered a language is according to an agglomeration of the databases of The Catalogue of Endangered Languages (ELCat) , UNESCO Atlas of the World's Languages in Danger and Ethnologue.

AES status # of languages % of languages
not endangered 2827 37.12%
threatened 1395 18.32%
shifting 1764 23.16%
moribund 409 5.37%
nearly extinct 438 5.75%
extinct 782 10.27%
total:7615

Descriptive Status

The descriptive status of a language measures how extensive a grammatical description there exists for a language.

For the purpose of the descriptive status Glottolog's regular document types are mapped a more coarse grained Most Extensive Description (MED) type as follows:

MED type Description # of languages % of languages
long grammar Grammar with more than 300 pages 1835 23.59%
grammar Grammar with less than 300 pages 918 11.80%
grammar sketch Grammar sketch 1985 25.52%
phonology/text New Testament, Text, Phonology, (typological) Study Of A Specific Feature or Dictionary 959 12.33%
Wordlist or less Wordlist or less 2081 26.75%
total: 7778