Impact of regional climatic conditions on tree growth on mainland Greece

Koulelis, Panagiotis P.; Daskalakou, Evangelia N.; Ioannidis, Kostas

doi:10.2478/foecol-2019-0015

Cited by 8 publications

(20 citation statements)

References 31 publications

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“…Even under the mentioned deficiencies, of production, the importance of the examined species as productive species of the national forest sector must be emphasized. Koulelis et al (2019) reported, taking into account official national sources, that oak occupies the largest range of Greek industrial forests and could contribute 5.56% of the country's total timber production and that beech is more common in the northwestern and eastern parts of the mainland and could contribute 20.05% of national production. Black pine is one of the most important timber species in Greece, forming forests in the mountains throughout most of the mainland and locally on large islands in the north (Strid and Tan, 1997) and could contribute 10.06% of national production.…”

Section: Resultsmentioning

confidence: 99%

Constructing single-entry stem volume models for four economically important tree species of Greece

Koulelis¹,

Ioannidis²

2021

Folia Oecologica

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Three different nonlinear regression models were tested for their ability to predict stem volume for economically important native tree species in Greece. Τhe models were evaluated using adjusted R square (Adj Rsqr) root mean square error (RMSE) and Akaike information criterion (AICc), where necessary. In general, the quadratic polynomial and cubic polynomial models and the two-parameter power models fit the data well. Although the two-parameter power function fit best for fir, oak, and beech trees, the cubic polynomial model produced the best fit statistics for black pine. Making forest inventory estimates often involves predicting tree volumes from only the diameter at breast height (DBH) and merchantable height. This study covers important gaps in fast and cost-effective methods for calculating the volume of tree species at national level. However, the increasing need for reliable estimates of inventory components and volume changes requires more accurate volume estimation techniques. Especially when those estimates concern the national inventory, those models must be validated using an entire range of age/diameter and site classes of each species before their extended use across the country to promote the sustainable use of forest resources.

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Section: Resultsmentioning

confidence: 99%

Constructing single-entry stem volume models for four economically important tree species of Greece

Koulelis¹,

Ioannidis²

2021

Folia Oecologica

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“…The fine-scale structured soil patterns demonstrate ability to effect on the herb layer stratum [10]. Soil variables are able to explain both broad-scale and fine-scale spatial patterns [11].…”

Section: International Letters Of Natural Sciencesmentioning

confidence: 96%

The Small-Scale Variation of Herb-Layer Community Structure in a Riparian Mixed Forest

Zhukova¹,

Demchuk

Yorkina

et al. 2021

ILNS

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The role of spatial variables, soil properties and overstorey structure in spatial variation of the herb-layer community in a riparian mixed forest was shown. The research were conducted in the "Dnipro-Orils’kiy" Nature Reserve (Ukraine). The research polygon was laid in a forest in the floodplain of the River Protich, which is a left inflow of the River Dnipro. Plant abundance was quantified by measuring cover within experimental polygon. The experimental polygon consisted of 7 transects and each transect was made up of 15 test points. The distance between rows in the site was 3 m. At the site we established a plot of 45×21 m, with 105 subplots of 3×3 m organized in a regular grid. Vascular plant species lists were recorded for each 3×3 m subplot along with visual estimates of species cover projection. The plant community was represented by 43 species, of which 18.6% were phanerophytes, 39.5% were hemikriptophytes, 9.3% were therophytes, 7.0% were geophytes. An overall test of random labelling revealed the total nonrandom distribution of the tree stems within the site. Constrained correspondence analysis (CCA) was applied as ordination approach. The forward selection procedure allowed us to select 6 soil variables, which explain 28.3% of the herb-layer community variability. The list of the important soil variables includes soil mechanical impedance (at the depth 0–5, 30–35, 75–80, and 95–10 cm), soil moisture, and soil bulk density. The variation explained by pure spatial variables is equal to 11.0 %. The majority of the tree-distance structured variation in plant community composition was broad-scaled. The significant relationship was found between the pure spatial component of the community variation and a lot of phytoindicator estimations of which the variability of damping and humidity were of the greatest importance. Trees stand was demonstrated to be a considerable factor structuring both the herb-layer community and spatial variation of the physical properties of soil.

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“…In Greece, water scarcity is likely the primary climatic factor limiting forest growth. Studies have shown a strong correlation between available water and tree ring width and tree growth in different Mediterranean forests and tree species [18][19][20][21][22]. Weakening or necrosis of Mediterranean fir forests in Greece, particularly in southern and central Greece, has been attributed primarily to drought-related extreme periods and high spring or low winter temperatures [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Brief Overview of Greek Fir Radial Growth in Response to Climate and European Fir Budworm: Three Case Studies from Giona Mountain, Central Greece

Koulelis¹,

Petrakis²

2023

Climate

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Tree rings provide an invaluable insight into how trees adapt to changes in climate. This study presents aggregated results, from our research on tree rings, climatic response and the insect Choristoneura murinana infestations from three studies on Greek fir, located in stands across Central Greece and Giona Mountain on three different altitudes. In our studies, was found that extreme droughts and wet events had a negative or positive effect on fir growth, respectively. April’s precipitation had a positive correlation with growth for all the stands, which supports other authors’ findings. Moreover, the average maximum temperature of the growing season and the maximum temperature of April, July and August were also linked to growth. Evapotranspiration during the growing season was seen to be inversely proportional to the growth of fir. An apparent decline in tree ring growth more severe in stand 3 (Average Tree Ring Width Index, ARWI < 0.6) has been observed, particularly in recent years. The data suggests that temperature is having a detrimental effect on fir growth in the area, with a significant decreasing tendency in growth from 1993 for the high altitude stands and from 1998 for the lower altitude stand. To ensure successful and sustainable forest management in the future, more research into tree rings and their relationship with climate must be carried out.

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Impact of regional climatic conditions on tree growth on mainland Greece

Cited by 8 publications

References 31 publications

Constructing single-entry stem volume models for four economically important tree species of Greece

Constructing single-entry stem volume models for four economically important tree species of Greece

The Small-Scale Variation of Herb-Layer Community Structure in a Riparian Mixed Forest

Brief Overview of Greek Fir Radial Growth in Response to Climate and European Fir Budworm: Three Case Studies from Giona Mountain, Central Greece

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