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Science/Tech See other Science/Tech Articles Title: How Medieval Knights remade Poland’s ecosystems Environmental Crusaders How Medieval Knights remade Poland’s ecosystems In 1280, victorious Teutonic Crusaders began building the world’s largest castle on a hill overlooking the River Nogat in what is now northern Poland. Malbork Castle became the hub of a powerful Teutonic state that crushed its pagan enemies and helped remake Medieval Europe. Now, ancient pollen samples show that in addition to converting heathens to Christians, the Crusaders also converted vast swathes of Medieval forests to farmlands. In the early-13th century, Prussian tribes living in the south-eastern Baltic became a thorn in the side of the Monastic State of Teutonic Knights, which was formed in 1224 in what is now Germany and Poland. To remove the thorn, and protect Christian converts in the region, the Teutonic Order launched a series of crusades. By the 14th century, the conquests had produced a state that ruled over more than 220,000 people, Alex Brown and Aleks Pluskowski of the University of Reading in the United Kingdom report in the Journal of Archeological Science, including new colonists who settled into fortified towns and castles. To understand how these historic shifts changed Europe’s environment, past researchers have relied on hints from old maps and papers, such as those showing how much timber or stone a wealthy Knight used to build his castle. Brown and Pluskowski, however, turned to a different kind of historical record: the pollen grains that become trapped in the layers of mud that line waterbodies. By analyzing shifts in the pollen, researchers can reconstruct everything from past climates to landscape changes. In this case, the researchers looked at pollen taken from what was once Malbork Castle’s outer protective moat, an old fish pond north of the castle, and peat deposits to the south. Starting in the mid-11th century, they noticed that tree pollen began to decline markedly, and was gradually replaced by pollen from herbaceous plants and then cereal crops. “The 12th/13th to 15th centuries witnessed a fundamental change in the nature of the vegetation landscape and land-use of Malbork,” they write, “from one dominated by deciduous woodland, with only limited evidence for human impact, to an increasingly open landscape with evidence for intensive cultivation of cereals, particularly rye, with pastureland and heathland.” Other research, however, suggests the Teutonic Knights also were careful to preserve at least some nearby forest, which provided game animals and was “managed as an important resource.” – David Malakoff | April 27, 2011 Source: Brown, A., & Pluskowski, A. (2011). Detecting the environmental impact of the Baltic Crusades on a late-medieval (13th–15th century) frontier landscape: Palynological analysis from Malbork Castle and hinterland, Northern Poland. Journal of Archaeological Science DOI: 10.1016/j.jas.2011.04.010
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