Environmental history in Central Croatia for the last two millennia - vegetation, fire and hydrological changes under climate and human impact

Dario Hrusevar, Koraljka Bakrac, Slobodan Miko, Nikolina Ilijanic, Ozren Hasan, Mirna Mamic, Tatjana Puljak, Anita Vucic, Katarina Husnjak Malovec, Martina Weber, Bozena Mitic

This paper presents the paleoenvironmental reconstruction of a mire sequence near the village Blatuša, with a focus on changes in vegetation
composition, hydrological regime and fire history of the Banovina/Kordun area during the last two millennia. For this purpose, pollen,
non-pollen and charcoal analysis were done. By the application of CONISS statistical analysis three different pollen assemblage (sub)zones
could have been distinguished: a dominance of alder-beech/oaks from the 2nd to the middle of the 7th century, followed by a prevalence of
grasses-beech/oaks till the end of the 13th century. Finally, an assemblage of grasses-hornbeam/oaks populated the area from the 14th to the
beginning of the 20th century. The high abundance of peat mosses (Sphagnum) from the 11th to the end of the 14th century must indicate
increased precipitation and higher frequencies of rainfall during the Medieval Climate Anomaly. Transition from an ombrotrophic to minerotrophic
phase of mire evolution during the Little Ice Age is caused by changing in moisture level, with somewhat wetter period prevailing till the
middle of the 17th century followed by drier conditions till the beginning of the 20th century. Although cereal pollen grains first appear from the
layers dated to the late 14th century and the proportion of secondary anthropogenic indicators were low during the entire Middle Ages, a large
number of charcoal particles suggests stronger anthropogenic activity than indicated by observed changes in vegetation composition. Still,
a sharp rise of non-arboreal pollen during the Migration period most likely reflect a general natural succession process on mire surface than
persuable proof of Avaric-Slavic impact on vegetation. Direct anthropogenic pressure indicated by weeds and cereal pollen can be tracked
from the Late Middle Ages onwards.

Department für Botanik und Biodiversitätsforschung
Externe Organisation(en)
Nastavni Zavod Javno Zdravstvo, Zavod Javno Zdravstvo Zadar, Park prirode Žumberak Samoborsko gorje, University of Zagreb, Hrvatski Geoloski Institut
Prilozi instituta za arheologiju u zagrebu
Anzahl der Seiten
ÖFOS 2012
106008 Botanik, 106049 Ultrastrukturforschung
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