Xylem Phenology of &lt;i&gt;Fagus sylvatica&lt;/i&gt; in Rarău Mountains (Eastern Carpathians, Romania)

Semeniuc, Anca; Popa, Ionel; Timofte, Adrian; Gurean, Dan Marian

doi:10.15835/nbha4219546

Cited by 11 publications

(8 citation statements)

References 25 publications

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“…The extension of xylogenesis could be caused by the Mediterranean mild temperatures, despite water restrictions. However, in F. sylvatica , the results showed the opposite response, the beginning was later than in colder locations in Europe, such as in France ( Michelot et al, 2012 ), Slovenia ( Čufar et al, 2008b ; Prislan et al, 2013 ), Romania ( Semeniuc et al, 2014 ), Czech Republic ( Vavrčík et al, 2013 ) and the Netherlands ( van der Werf et al, 2007 ). This indicates that warmer and drier conditions at Moncayo negatively affect the duration of xylogenesis in F. sylvatica .…”

Section: Discussionmentioning

confidence: 90%

“…Compared to P. sylvestris , there is less information available on F. sylvatica . Cambial productivity of this species has been monitored at different sites and during several growth seasons in Slovenia by Čufar et al (2008b) and Prislan et al (2013) and also in Romania ( Semeniuc et al, 2014 ). In addition, other studies have been performed for one growing season in the Netherlands ( van der Werf et al, 2007 ), France ( Michelot et al, 2012 ), Czech Republic ( Vavrčík et al, 2013 ), and in north Germany ( Schmitt et al, 2000 ).…”

Section: Introductionmentioning

confidence: 99%

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Living on the Edge: Contrasted Wood-Formation Dynamics in Fagus sylvatica and Pinus sylvestris under Mediterranean Conditions

et al. 2016

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Wood formation in European beech (Fagus sylvatica L.) and Scots pine (Pinus sylvestris L.) was intra-annually monitored to examine plastic responses of the xylem phenology according to altitude in one of the southernmost areas of their distribution range, i.e., in the Moncayo Natural Park, Spain. The monitoring was done from 2011 to 2013 at 1180 and 1580 m a.s.l., corresponding to the lower and upper limits of European beech forest in this region. Microcores containing phloem, cambium and xylem were collected biweekly from twenty-four trees from the beginning of March to the end of November to assess the different phases of wood formation. The samples were prepared for light microscopy to observe the following phenological phases: onset and end of cell production, onset and end of secondary wall formation in xylem cells and onset of cell maturation. The temporal dynamics of wood formation widely differed among years, altitudes and tree species. For Fagus sylvatica, the onset of cambial activity varied between the first week of May and the third week of June. Cambial activity then slowed down and stopped in summer, resulting in a length of growing season of 48–75 days. In contrast, the growing season for P. sylvestris started earlier and cambium remained active in autumn, leading to a period of activity varying from 139-170 days. The intra-annual wood-formation pattern is site and species-specific. Comparison with other studies shows a clear latitudinal trend in the duration of wood formation, positive for Fagus sylvatica and negative for P. sylvestris.

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Section: Discussionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Living on the Edge: Contrasted Wood-Formation Dynamics in Fagus sylvatica and Pinus sylvestris under Mediterranean Conditions

et al. 2016

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“…Others prefer to rely on some more classical geopolitical concepts such as the one of rimland to describe the countries included in the Eastern Partnership. As a result, they call for the need to strenghten the political and security alliances between some of the Eastern neighbors and the "West" through NATO membership and more economic and political closeness with the European Union (Velenciuc, 2014).…”

Section: The Eastern Partnership and Geopolitical Approachesmentioning

confidence: 99%

Which Geopolitics for the European Union? The EU’s Eastern Partnership

Crombois¹

2015

IRD

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This article discusses whether the European Union (EU) has engaged in a geopolitical approach when it comes to its Eastern neighbors, now included in the EU's Eastern Partnership. The paper concludes that the EU has not engaged in a geopolitical approach when it comes to its policies towards its Eastern neighbors. Instead, it has approached them through the prisms of inter-connectedness and interdependency. The main reason for that rejection of geopolitical approach lies in the role that the EU has assigned to itself as an international actor, i.e. as a civilian and normative power. Finally, the use of civilian instruments would avoid the EU falling into a geopolitical trap that would lead to a zero sum game situation for its Eastern neighours in their relationships with Russia.

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“…Common beech forests can be found in the entire Carpathian chain, starting from low hills up to the mountain region, between 300 -1400 m altitudes. In Romania, common beech is the most widespread species covering approximately 1.915.600 ha, namely 31% of the national forest fund (Biriș, 2004;Semeniuc et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Considerations Concerning the Oldest Stands from Banatului Mountains, Romania

Gansac

Dincă

Chiriac

2020

sdr

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The present study was realized in Banatului Mountains (Romanian Carpathians) within Nera, Caransebeș and Băile Herculane Forest Districts, based on forest management plans from 1991-2008 and has led to the identification of 394 stand elements older than 200 years. The purpose of this paper was to analyze the trees’ main qualitative characteristics (age), the stands’ structural characteristics (consistency, composition, average diameter and average height) as well as the stational characteristics (altitude, slope, soil type). The main focus was to identify the oldest stands from Banatului Mountains. The present paper presents the oldest 18 stands as well as their most representative characteristics: diameter, height, consistency, slope, altitude, soil, site and structure. The oldest stand identified in this area is a 260-year-old common beech stand from Nera with heights between 36-38 meters and a diameter of 98 meters. Furthermore, it has been observed that common beech stands have a normal consistency, while their structure is relatively uneven-age. The research has shown that the surface occupied by old common beech stands that have reached their exploitability age is of 60.978 ha, namely 13% of the total surface of these forests. The site conditions where they are spread are characterised by preponderantly Northeast and South-West expositions, fields with slopes of 21-30 degrees, average altitudes of 900-1000 m, eutric cambisol and luvisol soils and medium and superior reliability sites.

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Xylem Phenology of <i>Fagus sylvatica</i> in Rarău Mountains (Eastern Carpathians, Romania)

Abstract: The cambium activity and the tree ring

Cited by 11 publications

References 25 publications

Living on the Edge: Contrasted Wood-Formation Dynamics in Fagus sylvatica and Pinus sylvestris under Mediterranean Conditions

Living on the Edge: Contrasted Wood-Formation Dynamics in Fagus sylvatica and Pinus sylvestris under Mediterranean Conditions

Which Geopolitics for the European Union? The EU’s Eastern Partnership

Considerations Concerning the Oldest Stands from Banatului Mountains, Romania

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