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The Origins of Agriculture in Central Europe

DNA, LBK, and the Origins of Agriculture

By , About.com Guide

Neolithic burial HAL2 from Halberstadt, Germany.

Neolithic burial HAL2 from Halberstadt, Germany.

Science magazine
Our modern civilization was built on inventions and innovations, such as farming, pottery, metallurgy, and tracking the seasons. These innovations developed in one or two places and times in prehistory, and then spread out from those places in a process archaeologists call diffusion. How diffusion really worked has always been a question of debate, not really solvable with known archaeological methods. Did people from the core invention area move en masse to other places bringing their innovations with them? Or did people from other places learn about innovations from trade or other relationships such as intermarriage? Or was it a little of both?

An international team led by Wolfgang Haak of the Molecular Archaeology Group of Johannes Gutenberg University have attempted to shed some light onto this difficult question using DNA analysis as a clue to possible past movements of Neolithic farming communities. Their report was published in Science magazine on 11 Nov 2005.

The Origins of Agriculture

Agriculture—the control of plants for human consumption—was invented in what is now Turkey about 12,000 years ago. By 7,500 years ago, farming had begun in Hungary and Slovakia, and then, within a space of 500 years, it spread up and into central Europe, between the Paris Basin and the Ukraine in what is now Germany, Poland and the Czech Republic. In the past, archaeologists noted that the spread of agriculture into central Europe was accompanied by a suite of artifacts and behaviors called the Linear Pottery Culture (linear bandkeramik in German, also known as LBK), from their distinctive banded pottery type. The LBK culture was widespread throughout Europe and had remarkably similar traits wherever it has been found, including the same kinds of crops, the same forms of houses, and the same kinds of stone tool technology, in addition to similarities in pottery decoration.

The speed at which farming cultures spread from what is now the Balkan states into the rest of central Europe, and the uniformity of the LBK culture across the region, suggested to some scholars that the diffusion of agriculture was achieved by massive human migration. In other words, population pressure in the Balkan states led to mass migration outward, the new farmers replacing the hunter-gatherers already living in central Europe. More recently, however, DNA studies began to indicate that instead, the existing Paleolithic peoples of central Europe had merely adopted the new form for themselves, rather than being replaced by a population of farmers. But no conclusive investigations had been published before now.

DNA and the Linearbandkeramic

Haak and his colleagues collected mitochondrial DNA samples of skeletal material from 57 individuals recovered from sixteen Neolithic LBK sites in Germany, Austria, and Hungary. Of these 57, 24 proved to contain adequate sample sizes for comparison. Of the 24 DNA samples, six contained a sequence called the N1a haplogroup. N1a is a distinctive and rare lineage in modern populations, accounting for two tenths of a percent of the people living in the world today. Analysis of the Neolithic data suggested that nearly 25 percent of the people who were buried in Neolithic LBK cemeteries had the N1a sequence; using a probability curve, the authors argue that between 8 and 48 percent of Neolithic populations in central Europe had the N1a haplogroup. Therefore, the Neolithic populations of Europe are quite different than the current populations. Although we do not know as yet about the Paleolithic populations, it is hypothesized by Haak and colleagues that they also did not have the N1a haplogroup, and therefore are more like the modern populations than those of the Neolithic.

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