Holocene vegetation history in the upper forest belt of the Eastern Romanian Carpathians

Tanţău, Ioan; Feurdean, Angelica; Beaulieu, Jacques‐Louis de; Reille, Maurice; Fărcaş, Sorina

doi:10.1016/j.palaeo.2011.06.011

Cited by 60 publications

(56 citation statements)

References 39 publications

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“…yr BP (Figure 4), (Fărcaş et al, 1999;Tanţău et al, 2003Tanţău et al, , 2006Tanţău et al, , 2011aTanţău et al, , 2011b, although particularly rare in the upland sites (Figure 4). These records suggest small-scale human impact (e.g.…”

Section: The Relationship Between Pollen Richness and Anthropogenic Imentioning

confidence: 97%

Biodiversity variability across elevations in the Carpathians: Parallel change with landscape openness and land use

et al. 2013

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An understanding of contemporary and likely future biodiversity requires knowledge of how past human societies have shaped diversity patterns. Here, we use long-term pollen data sets extending from lowlands to subalpine environment in the Carpathian region (Romania) with the aim of exploring the relationship between landscape openness, anthropogenic disturbance, elevation and vegetation richness over the Holocene. We found that landscape openness represents a significant driver of pollen richness: The more open sites from mid (440-750 m) and high elevations (1550-1850 m) showed on average greater diversity than more forested upland sites (1050-1360 m). For the first time, our results show pollen richness patterns along elevation gradients that remain constant over the Holocene. Although significant only over the last 3000 cal. yr BP, these elevational patterns become accentuated with stronger evidence of anthropogenic impact. We also found a strong link between diversity change and major land use strategies of prehistoric societies, demonstrating the potential of pollen richness to be used as a tool to depict the ecological impact of human disturbance on diversity. Most distinct episodes of enhanced floristic richness are evident during the Roman Period (2000 cal. yr BP), and over the last 500 cal. yr BP. Recent anthropogenic activity negatively impacted diversity in mountainous areas mainly through plantations; the lack of sites in agriculture landscapes however limits our inference for this type of setting. The maintenance of habitat diversity is key to maintaining high levels of diversity. While there is temporal consistency in the diversity pattern in records from similar climate and vegetation settings, comparison of diversity from different vegetation assemblages and levels landscapes openness should be interpreted cautiously.

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Section: The Relationship Between Pollen Richness and Anthropogenic Imentioning

confidence: 97%

Biodiversity variability across elevations in the Carpathians: Parallel change with landscape openness and land use

et al. 2013

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“…To date, in Romania, despite numerous peat bogs that can be excellent archives for testate amoebae (TA) based reconstruction data on fossil TA is limited to only two records (Schnitchen et al, 2006;Feurdean et al, 2015) although palaeoecological studies are abundant (e.g., Fărcaş et al, 2005;Feurdean et al, , 2013Tanţău et al, 2011Tanţău et al, , 2014 This study is focused on a Sphagnum dominated peat bog from Romania and the main objectives will be: i) analysis of testate amoebae fossil assemblages for qualitative reconstruction of the moisture conditions on the peat surface; ii) loss on ignition analysis (LOI) for the calculation of organic matter and minerogenic material content in sediments; iii) to assess the possible correlation between the qualitative reconstruction of the major wet-dry shifts, the content of organic matter and the minerogenic material input.…”

Section: Introductionmentioning

confidence: 99%

Late Holocene palaeohydrological changes in a Sphagnum peat bog from NW Romania based on testate amoebae

Diaconu¹,

Grindean²,

Panait³

et al. 2016

Studia UBB Geologia

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Abstract. This paper investigates the possibility of reconstructing the palaeohydrological changes in an active Sphagnum peat bog from north-western Romania using testate amoebae fauna and organic matter content determined by loss on ignition (LOI). In total 28 taxa of testate amoebae were identified of which 11 were frequent enough to present a remarkable ecological significance. Based on the relative abundance of these taxa nine zones were identified, crossing from very wet to dry climate conditions. The wet periods identified are characterized by taxa like Centropyxis cassis, Amphitrema flavum and Hyalosphenia papilio, while in the dry periods Difflugia pulex and Nebela militaris thrive. We showed that combining qualitative information regarding hydrological preferences with the quantitative percentage data from the fossil record it is possible to obtain information regarding major surface moisture changes from the peat bog surface. Furthermore we identified a link between distribution of testate amoebae assemblages, organic matter variation and minerogenic material.

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“…Moreover, dense moss and herb vegetation cover might favor the establishment of this species, and also growth, especially for seedlings <50 cm. Oak tolerates much shading within the first two to three years of growth [37,[40][41][42][43]. In Sweden, which is the northern boundary of oak distribution [44], it has been shown that 10% of full light is necessary for survival and 18% for development [45].…”

Section: Discussionmentioning

confidence: 99%

Tree Species Establishment in Urban Forest in Relation to Vegetation Composition, Tree Canopy Gap Area and Soil Factors

Jankovska

Brūmelis

Nikodemus

et al. 2015

Forests

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Abstract:The study of density and growth of pine, birch and oak seedlings and saplings in canopy gaps in the urban boreal forest in Riga, Latvia, indicates that natural regeneration can increase diversity in small gaps caused by tree mortality, and can ensure conversion from even-aged pine forest. Abundant regeneration in small gaps showed that light (gap area) was only one of the factors affecting tree regeneration in the gaps. The depth of the O layer and pH were suggested to be important factors for the establishment and growth of pine and birch. For oak, the main factors for establishment and growth were favorable moisture, higher pH and N concentration. Knowledge of ecological factors affecting the establishment of seedlings and growth of saplings of the most common trees species in the urban boreal forest is needed to predict successional trajectories and to aid management.

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Holocene vegetation history in the upper forest belt of the Eastern Romanian Carpathians

Cited by 60 publications

References 39 publications

Biodiversity variability across elevations in the Carpathians: Parallel change with landscape openness and land use

Biodiversity variability across elevations in the Carpathians: Parallel change with landscape openness and land use

Late Holocene palaeohydrological changes in a Sphagnum peat bog from NW Romania based on testate amoebae

Tree Species Establishment in Urban Forest in Relation to Vegetation Composition, Tree Canopy Gap Area and Soil Factors

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