12,000-Years of fire regime drivers in the lowlands of Transylvania (Central-Eastern Europe): a data-model approach

Feurdean, Angelica; Liakka, Johan; Vannière, Boris; Marinova, Elena; Hutchinson, Simon M.; Mosburgger, Volker; Hickler, Thomas

doi:10.1016/j.quascirev.2013.09.014

Cited by 116 publications

(129 citation statements)

References 67 publications

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“…This pollen record can be correlated with the available data from other investigations in the northwest of Romania (Bodnariuc et al, 2002;Björkman et al, 2003;Jalut et al, 2003;Fărcaş et al, 2005;Feurdean et al, 2005Feurdean et al, , 2007Feurdean et al, , 2013Feurdean and Willis, 2008) to give a general picture of the Holocene forest development in this submountainous region of South-Eastern Europe.…”

Section: Vegetation Historysupporting

confidence: 77%

“…yr BP. Additional estimated ages for the expansion and maximum of Carpinus betulus and the establishment and expansion of Fagus sylvatica, were obtained by comparison with other sequences from the region (Björkman et al, 2003;Bodnariuc et al, 2002;Jalut et al, 2003;Feurdean, 2005;Feurdean et al, 2007Feurdean et al, , 2013Feurdean and Willis, 2008). The accumulation rate of sediments was calculated based on the age-depth model (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…2). Nowadays, the peat bog covers one third of the reservation and the swamp within hosts a protected phytocoenosis with (Feurdean, 2005;, Steregoiu (Björkman et al, 2003;; 2) Turbuţa ; 3) Molhașu Mare (Feurdean and Willis, 2008); 4) Ic Ponor (Bodnariuc et al, 2002, Jalut et al, 2003; 5) Căpăţâna (Fărcaş et al, 2005); 6 -Lake Ştiucii (Feurdean et al, 2013). …”

Section: Study Areamentioning

confidence: 99%

“…Our main goals were: i) to determine the vegetation dynamics and composition within the peat bog, in accordance with the changes in climate and ecological conditions; ii) to assess the impact of anthropogenic activity on the local and regional vegetation in this understudied region, during the Middle to Late Holocene. For a better overview of these vegetation shifts, we have compared our results with pollen and microcharcoal records from other sites in NW Romania: Preluca Ţiganului (Feurdean, 2005;, Steregoiu (Björkman et al, 2003;, Turbuţa , Molhașu Mare (Feurdean and Willis, 2008), Ic Ponor (Bodnariuc et al, 2002;Jalut et al, 2003), Căpăţâna (Fărcaş et al, 2005) and Lake Ştiucii (Feurdean et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Middle to Late Holocene vegetation shifts in the NW Transylvanian lowlands (Romania)

Grindean

Tanţău²,

Fărcaş³

et al. 2014

Studia UBB Geologia

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Abstract. The Iaz peat bog, located in northwestern Transylvania at 300 m a.s.l., was cored to study the Middle to Late Holocene vegetation shifts in the area. The pollen record is supported by seven 14 C datings. The base of the sequence starts in the Middle Holocene, when the outer woodlands were dominated by Corylus avellana together with other components of the Quercetum mixtum. The local establishment of Carpinus betulus occurred at 5700 cal. yr BP with maximum values at around 4900 cal. yr BP. At 4800 cal. yr BP, Fagus sylvatica became locally established and expanded, possibly as a result of moist climatic conditions and dominated the mesothermophilous woodlands from 4300 cal. yr BP onwards. During the periods of greater moisture, the deciduous forest was overgrown by the hygrophilous Alnus glutinosa belt. Indications of human activities in the area were recorded since 6300 cal. yr BP, when Cerealia and Secale pollen and other ruderal taxa start to appear regularly throughout the sequence. Although intense at times, the anthropogenic factor only played a major role in the vegetation changes during the last 635 years.

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Section: Vegetation Historysupporting

confidence: 77%

Section: Methodsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Middle to Late Holocene vegetation shifts in the NW Transylvanian lowlands (Romania)

Grindean

Tanţău²,

Fărcaş³

et al. 2014

Studia UBB Geologia

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“…4 is completed in its basal part with important events that have marked the sediment circuit on landforms surface. The large scale vegetation change at 10700 YBP (replacing the steppe with silvosteppe and forests [11], introduction of agriculture during early Neolithic, 8000-7500 YBP, the Stiucii Lake sequence revealed a continuous and consistent effect of human impact), [12] both with the already mentioned hydrological events, have determined optimum conditions for river channels (at least those on Siret and Somes sizes together with their important tributaries) changes of morphological style from braided to meandering.…”

Section: Resultsmentioning

confidence: 98%

History of Holocene fluvial activity in Romania: evidences based on absolute dating

Rãdoane¹,

Perşoiu²,

Chiriloaei³

et al. 2017

Proceedings of the 33rd Romanian Geomorphology Symposium

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Abstract-The main objective of this paper is to illustrate how was carried the reconstitution of geomorphological activity of rivers in Romania at different times of the Holocene based on the interpretation sedimentation contexts with dated samples, the sediment quality, their deposition styles, relict morphologies and others. The database compiled was processed using bivariate and multivariate statistical techniques or the probability distribution functions. The secondary objectives relate to: (i) Establishing a chronology of fluvial activity in Romania? (ii) How were felt Holocene climatic thresholds (identified in various proxies) in fluvial activity? (iii) How river chronology correlates with other environmental and geoarchaeological in our geographic area? (iv) In this research stage, we can explore some links with Central Europe fluvial chronologies?Keywords-fluvial chronologies; absolute dating; probability density functions; Holocene I. APPROACHING PREMISESRegarding the knowledge evolution on fluvial landforms and processes, the year 2010 stands out as a reference year in grouping the study objectives: (i) before 2010, the fluvial geomorphology research has focused mainly on present-day and modern channel dynamics, on fluvial processes related to human impact and other driving factors; (ii) after 2010, many notable attempts have occurred, with studies focused on the better understanding of the style and of the magnitude of channels changes for different timescales (secular, millennial, Late Holocene, Holocene, Late Glacial and transition to Holocene). Over the last 6 years several scientific studies based on absolute dating were published, with results correlated with multidisciplinary investigations. Due to the increased number of references on past climate and hydrological events, geomorphologists wanted to correlate them with the magnitude of fluvial activity, responsible for the morphologic and sedimentologic adjustment styles of river channels. The required information are stored in sedimentary archives (litho-stratigraphic units whose morphological, granulometric, geochemical, biological characteristics indicate the mechanisms and physical processes which contributed to their deposition) and are dated by one of the known techniques. Because these structures are rich in biogenic material, the most used method to evaluate their age was radiocarbon dating. [7,8], several hundreds of absolute dating of sedimentary archives were statistically approached and conclusions regarding the periods with high fluvial activity registered in the considered regions were obtained. In light of these results we want to report our own results throughout the objectives of the present study.In Romania, significant progress was achieved as regards the chronology of the Holocene.[9] summed the palaeoclimatic data sources and climate reconstructions for the last 15000 years in Romania. The fluvial sedimentary archives (from floodplain and floodplain terraces) and sedimentary archives from small sedimentary basins (small la...

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Global fire history of grassland biomes

Leys

Marlon

Umbanhowar

et al. 2018

Ecology and Evolution

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Grasslands are globally extensive; they exist in many different climates, at high and low elevations, on nutrient‐rich and nutrient‐poor soils. Grassland distributions today are closely linked to human activities, herbivores, and fire, but many have been converted to urban areas, forests, or agriculture fields. Roughly 80% of fires globally occur in grasslands each year, making fire a critical process in grassland dynamics. Yet, little is known about the long‐term history of fire in grasslands. Here, we analyze sedimentary archives to reconstruct grassland fire histories during the Holocene. Given that grassland locations change over time, we compare several charcoal‐based fire reconstructions based on alternative classification schemes: (a) sites from modern grassland locations; (b) sites that were likely grasslands during the mid‐Holocene; and (c) sites based on author‐derived classifications. We also compare fire histories from grassland sites, forested sites, and all sites globally over the past 12,000 years. Forested versus grassland sites show different trends: grassland burning increased from the early to mid‐Holocene, reaching a maximum about 8000–6000 years ago, and subsequently declined, reaching a minimum around 4000 years ago. In contrast, biomass burning in forests increased during the Holocene until about 2000 years ago. Continental grassland fire history reconstructions show opposing Holocene trends in North versus South America, whereas grassland burning in Australia was highly variable in the early Holocene and much more stable after the mid‐Holocene. The sharp differences in continental as well as forest versus grassland Holocene fire history trajectories have important implications for our understanding of global biomass burning and its emissions, the global carbon cycle, biodiversity, conservation, and land management.

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12,000-Years of fire regime drivers in the lowlands of Transylvania (Central-Eastern Europe): a data-model approach

Cited by 116 publications

References 67 publications

Middle to Late Holocene vegetation shifts in the NW Transylvanian lowlands (Romania)

Middle to Late Holocene vegetation shifts in the NW Transylvanian lowlands (Romania)

History of Holocene fluvial activity in Romania: evidences based on absolute dating

Global fire history of grassland biomes

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