The vegetation of Greek fir (Abies cephalonica Loudon) forests on the Oxia – North Vardousia mountain system, central Greece, in relation to drought

Samaras, Dimitrios; Σαμαράς, Δημήτριος

doi:10.12681/eadd/28665

Cited by 4 publications

(9 citation statements)

References 86 publications

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“…1). The most abundant forest type in the region is the montane Greek fir coniferous forest, which covers 44.6% of the study area (Samaras 2012). Although the fir forest attains its optimum distribution in the supra-mediterranean zone (900-1400 m a.s.l.…”

Section: Study Areamentioning

confidence: 99%

“…), it also occurs in the middle and upper part of the meso-mediterranean zone (600-900 m a.s.l. Samaras 2012). In the montane-mediterranean zone (1400-1900 m a.s.l.…”

Section: Study Areamentioning

confidence: 99%

“…1 for the definitions); • the second approach using an index obtained through the combination of two or more climatic factors related to drought: we used a modified version of the Transeau's humidity index (HI -Tuhkanen 1980), which combines the two main factors related to drought; the humidity index (HI) was calculated as the ratio of P to PETref (HI = P/PETref); • the third approach (called "site water balance approach") considers also the soil components of drought, along with the above climatic factors: in this study both reference actual evapotranspiration (AETref) and water deficit (D) were included in the water balance; water deficit is defined as the difference between PETref and AETref (Stephenson 1990); for the calculation of the above variables, a monthly version of Thornthwaite's water balance model was applied (Willmott et al 1985, Mintz & Serafini 1992, Samaras 2012.…”

Section: Quantification Of Droughtmentioning

confidence: 99%

“…For the spatial estimation of T and P, ordinary kriging, linear regression and regression-kriging models were used, taking into account the elevation and the spatial correlation of climatic data from 19 weather stations (Samaras 2012). The computational steps followed the general framework for geostatistical mapping of environmental variables (Hengl 2007).…”

Section: Quantification Of Droughtmentioning

confidence: 99%

“…Since then, many researchers have studied the floristic composition and structure of Greek fir forests and several plant communities have been described from different mountains of southern and central Greece (Barbéro & Quézel 1976, Dimopoulos et al 1996, Bergmeier 2002, Karetsos 2002, Maroulis 2003, Dimitrellos 2005, Vlachos 2006, Kokmotos 2008, Samaras et al 2008. For a detailed phytosociological review see Samaras (2012). However, the ecological causes underlying the floristic differentiation of the Greek fir forests have not yet been studied.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Drought effects on the floristic differentiation of Greek fir forests in the mountains of central Greece

Samaras¹,

Gaertner²,

Reif³

et al. 2015

iForest

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Section: Study Areamentioning

confidence: 99%

“…), it also occurs in the middle and upper part of the meso-mediterranean zone (600-900 m a.s.l. Samaras 2012). In the montane-mediterranean zone (1400-1900 m a.s.l.…”

Section: Study Areamentioning

confidence: 99%

Section: Quantification Of Droughtmentioning

confidence: 99%

Section: Quantification Of Droughtmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Drought effects on the floristic differentiation of Greek fir forests in the mountains of central Greece

Samaras¹,

Gaertner²,

Reif³

et al. 2015

iForest

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Impact of Climate on Vegetation Change in a Mountain Grassland – Succession and Fluctuation

Păcurar

Rotar

Reif

et al. 2014

Not Bot Hort Agrobot Cluj

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Traditionally managed Central European mountain grasslands have high nature conservation value because of their high species diversity. Whether these grasslands and their diversity can be preserved will depend on many factors, including how plant species composition responds to changes in climate conditions. To differentiate between fluctuations and directional succession in the herbaceous layer composition of a Romanian Festuca rubra L. and Agrostis capillaris L. grassland in Apuseni and whether any compositional changes can be related to climate. The vegetation of permanent plots was recorded annually between 2004 and 2012. Temperature and precipitation were measured by an automatic weather station at the study site. Cluster analysis, Indicator Species Analysis and the co-dominance ratio between F. rubra L. -A. capillaris were analysed. The compositional data was related to the climate variables. Thresholds of relevant climate variables differentiating between clusters of plots with similar vegetation composition were determined using classification tree methods. The vegetation composition in our plots within the years 2004, 2005 and 2008 were different from each other. From 2004 to 2006 directional succession could be identified; however the major patterns to emerge were fluctuations which occurred over the whole study period. Compositional shifts included A. capillaris L. and F. rubra L exchanging co-dominance with each other. The most important variables differentiating clusters were temperature during the dormant and vegetation periods and water balance during the vegetation period. It can be concluded that compositional shifts among years were largely a consequence of year to year climatic fluctuations; however, there is some evidence for a directional shift during the early years of the study.

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Impact of Climate on Vegetation Change in a Mountain Grassland â€“ Succession and Fluctuation

Păcurar

Rotar

Reif

et al. 2014

Not Bot Horti Agrobo

View full text Add to dashboard Cite

Traditionally managed Central European mountain grasslands have high nature conservation value because of their high species diversity. Whether these grasslands and their diversity can be preserved will depend on many factors, including how plant species composition responds to changes in climate conditions. To differentiate between fluctuations and directional succession in the herbaceous layer composition of a Romanian Festuca rubra L. and Agrostis capillaris L. grassland in Apuseni and whether any compositional changes can be related to climate. The vegetation of permanent plots was recorded annually between 2004 and 2012. Temperature and precipitation were measured by an automatic weather station at the study site. Cluster analysis, Indicator Species Analysis and the co-dominance ratio between F. rubra L.- A. capillaris were analysed. The compositional data was related to the climate variables. Thresholds of relevant climate variables differentiating between clusters of plots with similar vegetation composition were determined using classification tree methods. The vegetation composition in our plots within the years 2004, 2005 and 2008 were different from each other. From 2004 to 2006 directional succession could be identified; however the major patterns to emerge were fluctuations which occurred over the whole study period. Compositional shifts included A. capillaris L. and F. rubra L exchanging co-dominance with each other. The most important variables differentiating clusters were temperature during the dormant and vegetation periods and water balance during the vegetation period. It can be concluded that compositional shifts among years were largely a consequence of year to year climatic fluctuations; however, there is some evidence for a directional shift during the early years of the study./span>

show abstract

The vegetation of Greek fir (Abies cephalonica Loudon) forests on the Oxia – North Vardousia mountain system, central Greece, in relation to drought

Cited by 4 publications

References 86 publications

Drought effects on the floristic differentiation of Greek fir forests in the mountains of central Greece

Drought effects on the floristic differentiation of Greek fir forests in the mountains of central Greece

Impact of Climate on Vegetation Change in a Mountain Grassland – Succession and Fluctuation

Impact of Climate on Vegetation Change in a Mountain Grassland â€“ Succession and Fluctuation

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