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In linguistics, a stratum (Latin for "layer") or strate is a language that influences, or is influenced by another through contact. A substratum or substrate is a language that has lower power or prestige than another, while a superstratum or superstrate is the language that has higher power or prestige. Both substratum and superstratum languages influence each other, but in different ways. An adstratum or adstrate refers to a language that is in contact with another language in a neighbor population without having identifiably higher or lower prestige. The notion of "strata" was first developed by the Italian linguist Graziadio Isaia Ascoli (1829–1907), and became known in the English-speaking world through the work of two different authors in 1932.
Thus, both terms refer to a situation where an intrusive language establishes itself in the territory of another, typically as the result of migration. Whether the superstratum case (the local language persists and the intrusive language disappears) or the substratum one (the local language disappears and the intrusive language persists) applies will normally only be evident after several generations, during which the intrusive language exists within a diaspora culture. In order for the intrusive language to persist (substratum case), the immigrant population will either need to take the position of a political elite or immigrate in significant numbers relative to the local population (i. e., the intrusion qualifies as an invasion or colonisation; an example would be the Roman Empire giving rise to Romance languages outside Italy, displacing Gaulish and many other Indo-European languages). The superstratum case refers to elite populations that eventually adopt the language of the lower classes. An example would be the Burgundians and Franks in France, who eventually abandoned their Germanic dialects in favor of other Indo-European languages of the Romance branch, profoundly influencing the local speech in the process.
A substratum (plural: substrata) or substrate is a language that influences an intrusive language that supplants it. The term is also used of substrate interference; i.e. the influence the substratum language exerts on the replacing language. According to some classifications, this is one of three main types of linguistic interference: substratum interference differs from both adstratum, which involves no language replacement but rather mutual borrowing between languages of equal "value", and superstratum, which refers to the influence a socially dominating language has on another, receding language that might eventually be relegated to the status of a substratum language.
In a typical case of substrate interference, a Language A occupies a given territory and another Language B arrives in the same territory (brought, for example, with migrations of population). Language B then begins to supplant language A: the speakers of Language A abandon their own language in favor of the other language, generally because they believe that it will help them achieve certain goals within government, the workplace, and in social settings. During the language shift, however, the receding language A still influences language B (for example, through the transfer of loanwords, place names, or grammatical patterns from A to B).
In most cases, the ability to identify substrate influence in a language requires knowledge of the structure of the substrate language. This can be acquired in numerous ways:
One of the first-identified cases of substrate influence is an example of a substrate language of the second type: Gaulish, from the ancient Celtic people the Gauls. The Gauls lived in the modern French-speaking territory before the arrival of the Romans, namely the invasion of Julius Caesar's army. Given the cultural, economic and political advantages that came with being a Latin speaker, the Gauls eventually abandoned their language in favor of the language brought to them by the Romans, which evolved in this region until eventually it took the form of the French language that is known today. The Gaulish speech disappeared in the late Roman era, but remnants of its vocabulary survive in some French words (approximately 200) as well as place-names of Gaulish origin. It is also posited that some structural changes in French were shaped at least in part by Gaulish influence including diachronic sound changes and sandhi phenomena due to the retention of Gaulish phonetic patterns after the adoption of Latin, calques such as aveugle ("blind", literally without eyes, from Latin ab oculis, which was a calque on the Gaulish word exsops with the same semantic construction as modern French) with other Celtic calques possibly including "oui", the word for yes, while syntactic and morphological effects are also posited.
Other examples of substrate languages are the influence of the now extinct North Germanic Norn language on the Scots dialects of the Shetland and Orkney islands. In the Arab Middle East and North Africa, colloquial Arabic dialects, most especially Levantine, Egyptian, and Maghreb dialects, often exhibit significant substrata from other regional Semitic (especially Aramaic), Iranian, and Berber languages. Yemeni Arabic has Modern South Arabian, Old South Arabian and Himyaritic substrata.
Typically, Creole languages have multiple substrata, with the actual influence of such languages being indeterminate.
In the absence of all three lines of evidence mentioned above, linguistic substrata may be difficult to detect. Substantial indirect evidence is needed to infer the former existence of a substrate. The nonexistence of a substrate is difficult to show, and to avoid digressing into speculation, burden of proof must lie on the side of the scholar claiming the influence of a substrate. The principle of uniformitarianism and results from the study of human genetics suggest that many languages have formerly existed that have since then been replaced under expansive language families, such as Indo-European, Afro-Asiatic, Uralic or Bantu. However, it is not a given that such expansive languages would have acquired substratum influence from the languages they have replaced.
Several examples of this type of substratum have still been claimed. For example, the earliest form of the Germanic languages may have been influenced by a non-Indo-European language, purportedly the source of about one quarter of the most ancient Germanic vocabulary. There are similar arguments for a Sanskrit substrate, a Greek one, and a substrate underlying the Sami languages. Relatively clear examples are the Chude, Merya, Muromian and Meshcheran languages: while unattested, their existence has been noted in medieval chronicles, and one or more of them have left substantial influence in the Northern Russian dialects. By contrast more contentious cases are the Vasconic substratum theory and Old European hydronymy, which hypothesize large families of substrate languages across western Europe. Some smaller-scale unattested substrates that remain under debate involve alleged extinct branches of the Indo-European family, such as "Nordwestblock" substrate in the Germanic languages, and a "Temematic" substrate in Balto-Slavic (proposed by Georg Holzer).
When a substrate language or its close relatives cannot be directly studied, their investigation is rooted in the study of etymology and linguistic typology. The study of unattested substrata often begins from the study of substrate words, which lack a clear etymology. Such words can in principle still be native inheritance, lost everywhere else in the language family; but they might in principle also originate from a substrate. The sound structure of words of unknown origin — their phonology and morphology — can often suggest hints in either direction. So can their meaning: words referring to the natural landscape, in particular indigenous fauna and flora, have often been found especially likely to derive from substrate languages. None of these conditions, however, is sufficient by itself to claim any one word as originating from an unknown substratum. Occasionally words that have been proposed to be of substrate origin will be found out to have cognates in more distantly related languages after all, and therefore likely native: an example is Proto-Indo-European *mori 'sea', found widely in the northern and western Indo-European languages, but in more eastern Indo-European languages only in Ossetic.
A superstratum (plural: superstrata) or superstrate offers the counterpart to a substratum. When one language succeeds another, linguists label the succeeding language a superstratum and the earlier language a substratum.
A superstrate may also represent an imposed linguistic element akin to what occurred with English and Norman after the Norman Conquest of 1066 when use of the English language carried low prestige. The international scientific vocabulary coinages from Greek and Latin roots adopted by European languages (and subsequently by other languages) to describe scientific topics (sociology, zoology, philosophy, botany, medicine, all "-logy" words, etc.) can also be termed a superstratum, although for this last case, "adstratum" might be a better designation (despite the prestige of science and of its language). In the case of French, for example, Latin is the superstrate and Gaulish the substrate.
Some linguists contend that Japanese (and Japonic languages in general) consists of an Altaic superstratum projected onto an Austronesian substratum. Some scholars also argue for the existence of Altaic superstrate influences on varieties of Chinese spoken in Northern China. In this case, however, the superstratum refers to influence, not language succession. Alternate views detect substrate effects.
An adstratum (plural: adstrata) or adstrate is a language that through its prestige is a source of lexical borrowings to another. Generally, the term is used about languages in particular geolinguistic or geopolitical contexts. For example, early in England's history, Old Norse contributed an adstrate to the lexical structure of Old English.
The phenomenon is less common today in standardized linguistic varieties and more common in colloquial forms of speech since modern nations tend to favour one single linguistic variety (often corresponding to the dialect of the capital and other important regions) over others. In India, where dozens of languages are widespread, many languages could be said to share an adstratal relationship, but Hindi is certainly a dominant adstrate in North India. A different example would be the sociolinguistic situation in Belgium, where the French and Dutch languages have roughly the same status, and could justifiably be called adstrates to each other having each one provided a remarkable set of lexical specifications to the other.
The term is also used to identify systematic influences or a layer of borrowings in a given language from another language independently of whether the two languages continue coexisting as separate entities. Many modern languages have an appreciable adstratum from English due to the cultural influence and economic preponderance of the United States on international markets and previously colonization by the British Empire which made English a global lingua franca. The Greek and Latin coinages adopted by European languages (including English and now languages worldwide) to describe scientific topics (sociology, medicine, anatomy, biology, all the '-logy' words, etc.) are also justifiably called adstrata. Another example is found in Spanish and Portuguese, which contain a heavy Semitic (particularly Arabic) adstratum; and Yiddish, which is a linguistic variety of High German with adstrata from Hebrew and Aramaic, mostly in the sphere of religion, and Slavic languages, by reason of the geopolitical contexts Yiddish speaking villages lived through for centuries before disappearing during the Holocaust.
|Area||Resultant language||Substrate||Superstrate||Superstrate introduced by|
|China (Baiyue), Northern Vietnam||Yue (Viet), Various Min, Parts of Wu (Auish)||Various Old Yue||Old Chinese and Chu Language||Sinicisation (Qin's campaign against the Yue tribes, Han campaigns against Minyue, and Southward expansion of the Han dynasty), between the first millennium BC and the first millennium AD|
|Eastern Merranean||Levantine Arabic||Western Aramaic language,||Classical Arabic||Arabs during the Muslim conquests|
|Egypt||Egyptian Arabic||Coptic language|
|Maghreb (North Africa)||Algerian, Libyan, Moroccan, and Tunisian Arabic||Berber languages, Punic language, and Vulgar Latin|
|Ethiopia||Amharic||Central Cushitic languages||South Semitic languages||Bronze Age Semitic expansion|
|Eritrea/Ethiopia||Tigrinya, Tigré and Ge'ez||Central Cushitic and North Cushitic languages|
|England||Old English||Common Brittonic (from pre-Roman natives of England) and British Latin (from Romans)||Anglo-Saxon language||Germanic peoples during migration period|
|Ireland||Irish English||Irish (Gaelic)||Early Modern English, Northern Middle English (or "Early Scots", which came from Old Northumbrian English)||the English during the Plantations of Ireland in the 16th century|
|Scotland||Scottish English and Scots||Middle Scots and Scottish Gaelic languages (From native Scottish people)||the English during Scottish Reformation in the 16th century|
|Singapore||Singaporean Mandarin||Southern Chinese varieties: Min Nan, Teochew, Cantonese, Hainanese||Standard Mandarin||Singapore Government during the Speak Mandarin Campaign|
|France||French||Gaulish||Vulgar Latin, later Old Frankish||Romans during the Roman Empire, later various Germanic peoples during the Migration Period|
|Portugal||Portuguese||Gallaecian and Lusitanian languages||Vulgar Latin, later Visigothic|
|Canary Islands||Canarian Spanish||Guanche||Andalusian Spanish in the incorporation of the Canary Islands into the Crown of Castile||Andalusians during the incorporation of the Canary Islands into the Crown of Castile|
|Mexico||Mexican Spanish||Nahuatl and Mayan languages, and other languages local to the area (Zapotec language, Mixtec language, etc.)||Spanish of the 15th century||Spaniards during the Spanish Conquest|
of the 15th century
|Paraguay||Paraguayan Spanish||Guaraní language|
|Central Andes||Andean Spanish||Quechua language, Aymara language|
|Philippines||Chavacano||Tagalog, Ilokano, Hiligaynon, Cebuano, Bangingi, Sama, Tausug, Yakan, and Malay|
|Brazil||Brazilian Portuguese||Tupi language, Bantu languages||Portuguese of the 15th century||the Portuguese during the colonial period|
|Angola||Angolan Portuguese||Umbundu, Kimbundu, and Kikongo||Portuguese of the 15th century||the Portuguese during the colonial rule in Africa|
|Mozambique||Mozambican Portuguese||Swahili, Makhuwa, Sena, Ndau, Shangaan (Tsonga), Lomwe, Makonde, Chopi, Chuwabu, Ronga, Kimwani, Zulu, and Tswa|
|Romania||Romanian||Dacian language||Vulgar Latin, later Common Slavic||Romans during the Roman Empire, later various Slavic peoples during the Migration Period|
|Jamaica||Jamaican Patois||African languages of transported African slaves||Early Modern English||the English during the British Empire|
|India||Indian English||various language substrates from Indian languages, especially Hindi|
|Israel||Israeli Hebrew||Arabic dialects, Yiddish, German, Russian and other Jewish languages||Purified Hebrew constructed from Biblical and mishnaic Hebrew||Jewish emigrants in the late 19th|
and early 20th centuries
who revived then re-introduced Hebrew
|Shetland and Orkney||Insular Scots||Norn||Scots||Acquisition by Scotland in the 15th century|
|Norway||Bokmål||Old Norwegian||Danish||Union with Danish crown, 1380–1814.|
|Area||Resultant language||Substrate||Superstrate||Superstrate introduced by|
|France||Old French||Vulgar Latin||Old Frankish||Merovingians' dominance of Gaul around 500|
|England||Middle English||Old English||Old French||Normans during the Norman conquest|
|Norway||Bokmål||Old Norwegian||Danish||Union with Danish crown, 1380–1814.|
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