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

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

This paper presents the paleoenvironmental reconstruction of a mire sequence near the village Blatuga, 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 ke 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.

Organisation(s)
Department of Botany and Biodiversity Research
External organisation(s)
Nastavni Zavod Javno Zdravstvo Splitsko Dalmatins, Zavod Javno Zdravstvo Zadar, Javna ustanova „Park prirode Žumberak-Samoborsko gorje”, University of Zagreb, Croatian Geological Survey
Journal
Prilozi instituta za arheologiju u zagrebu
Volume
37
Pages
117-164
No. of pages
48
ISSN
1330-0644
DOI
https://doi.org/10.33254/piaz.37.5
Publication date
12-2020
Peer reviewed
Yes
Austrian Fields of Science 2012
106008 Botany, 106049 Ultrastructure research
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/environmental-history-in-central-croatia-for-the-last-two-millennia--vegetation-fire-and-hydrological-changes-under-climate-and-human-impact(534413f6-7201-409d-8570-0d528c135198).html