Eleni Eleftheriadou - Academia.edu (original) (raw)
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Papers by Eleni Eleftheriadou
Plants, 2021
A study of the trichomes types and distribution and pollen morphology was carried out in nine Mic... more A study of the trichomes types and distribution and pollen morphology was carried out in nine Micromeria taxa (M. cristata ssp. cristata, M. cristata ssp. kosaninii, M. croatica, M. graeca ssp. graeca, M. graeca ssp. fruticulosa, M. juliana, M. kerneri, M. longipedunculata and M. microphylla) and five closely related Clinopodium species (C. dalmaticum, C. frivaldszkyanum, C. pulegium, C. serpyllifolium and C. thymifolium) from the Lamiaceae family of the Balkan Peninsula. By scanning electron microscope, non-glandular trichomes, peltate and capitate trichomes were observed on the calyx, leaves and stem of the studied species. Two subtypes of capitate trichomes were observed in Micromeria species: subtype 1 (consisting of a basal epidermal cell and an elliptically shaped head cell) and subtype 2 (consisting of a basal epidermal cell, two to three stalk cells and a round head cell). In Clinopodium species, three types of capitate trichomes were observed: subtype 1, subtype 3 (consisti...
Phytologia Balcanica: International Journal of Balkan Flora and Vegetation, 2011
In the current study the authors report for the first time the occurrence of Salix ×velchevii, a ... more In the current study the authors report for the first time the occurrence of Salix ×velchevii, a recently described willow hybrid, in Greece. The specimens were collected from three localities in the northeastern part of the Drama Prefecture, at low altitudes, where both parent species were present. Detailed information concerning the taxon's ecology is provided too. Finally, a contribution to its description is made with the measurement and description of the leaf morphological characters and with the first- time description of the female catkins and fruits.
Progress in Botanical Research, 1998
A modern pollen deposition monitoring program has been initiated in Greece for the first time. Fo... more A modern pollen deposition monitoring program has been initiated in Greece for the first time. For this purpose six modified Tauber traps (Hicks and Hyvarinen, 1986), were placed on a transect from black pine (Pinus nigra) forest to the tree-line of Scots pine (Pinus sylvestris) in the Pieria mountains.
Phytochemistry, 2014
The chemical composition of the essential oil (analysed by GC and GC-MS), the types and distribut... more The chemical composition of the essential oil (analysed by GC and GC-MS), the types and distribution of trichomes and pollen morphology (analysed by scanning electron microscopy) were investigated in two closely related species, Micromeria kerneri Murb. and Micromeria juliana (L.) Benth. (Lamiaceae) from Southeast Europe as a contribution to their taxonomy. The essential oil of M. kerneri was characterized by a high concentration of oxygenated sesquiterpenes, with caryophyllene-oxide as the major compound. Caryophyllene-oxide was also the major component of the essential oil of M. juliana from all localities, except from Mt Krivošije (Montenegro), where piperitone oxide was the major constituent. Non-glandular trichomes, peltate trichomes, and two types of capitate trichomes (type 1 composed of one basal epidermal cell, and one head cell with subcuticular space; type 2 composed of one basal epidermal cell, two stalk cells, and one head cell with subcuticular space) were observed on leaves, the calyx and on the stem. Pollen of both species had six apertures (hexacolpate) set in the equatorial pollen belt (zonocolpate) and showed medium reticulate ornamentation. Multivariate analysis (PCA and UPGMA) of essential oil components clearly separated the investigated M. kerneri and M. juliana populations, and confirmed the opinion that they are different taxa. On the other hand, micromorphological traits between these species were the same. Nevertheless, definitive conclusions about the taxonomic relationships among these species will require genetic analysis.
![Research paper thumbnail of Alnus incana (L.) Moench. subsp. incana. – Near threatened (NT) [in greek]](https://attachments.academia-assets.com/46982949/thumbnails/1.jpg)
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Journal of Irrigation and Drainage Engineering, 2011
Owing to the difficulties in measuring daily reference potential evapotranspiration, its estimati... more Owing to the difficulties in measuring daily reference potential evapotranspiration, its estimation by means of the ASCE Penman-Monteith approach and various other empirical equations that are less demanding in terms of input data is favoured for various applications in vegetation science and climatology. This study presents the development of a Visual Basic software that can be used for the estimation of the daily PET ref by means of the standardized ASCE Penman-Monteith equation for both short (clipped grass) and tall (full-cover alfalfa) crops and thirteen additional empirical equations. Statistical measures of goodness of fit are also calculated to make it easier for users to compare and detect the empirical equations that have the minimum bias of estimation against the ASCE Penman-Monteith equation.
Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2011
In the current study the authors report for the first time the occurrence of Salix ×velchevii, a ... more In the current study the authors report for the first time the occurrence of Salix ×velchevii, a recently described willow hybrid, in Greece. The specimens were collected from three localities in the northeastern part of the Drama Prefecture, at low altitudes, where both parent species were present. Detailed information concerning the taxon's ecology is provided too. Finally, a contribution to its description is made with the measurement and description of the leaf morphological characters and with the first-time description of the female catkins and fruits.
Willdenowia
Eleftheriadou, E. & Raus, Th.: The vascular flora of the nature reserve Frak:to Virgin Forest of ... more Eleftheriadou, E. & Raus, Th.: The vascular flora of the nature reserve Frak:to Virgin Forest of Nomos Dramas (E Mak:edonia, Greece). -Willdenowia 25: 455-485. 1996. -ISSN 0511-9618. The nature reserve "Frak:to Virgin Forest of Nomos Dramas" (Central Rodopi massif, E Mak:edonia, Greece), established in 1980 to protect a unique area of upper montane forest untouched for c. 400 years, harbours the southemmost natural population of Picea abies in Europe and, within Greece, is of outstanding biogeographical interest owing to the boreal11nd Central European element, well represented in its vascular flora. A first floristic inventory of the area is presented, based on extensive recent field work and on scattered published information. Concise notes on the ecology and frequency of most taxa are provided. Ajuga pyramidalis, Anthemis orbelica, Cardamine amara, Centaurea stenolepis subsp. razgradensis, Chamaecytisus absinthoides subsp. rhodopaeus, Geum rhodopeum, Petasites kablikiamts, Primula e/atior subsp. elatior, Silene roemeri subsp. roemeri, Sorbus austriaca subsp. austriaca, and Thlaspi kovatsii are new to or reconfmned for the flora of Greece. Willdenowia 25 ~ 1996 459 woodpecker (Picoides tridactylus), and woodcock (Scolopax msticola). Examples of Central
![Research paper thumbnail of The plant communities of Greek fir forests (Abies cephalonica J.W. Loudon) of Mt. Goulinas (C. Greece) [in Greek with English abstract]](https://attachments.academia-assets.com/46982934/thumbnails/1.jpg)
](On the north and northeast slopes of Mt. Goulinás (C. Greece) the forests of Abies cephalonica, w... more On the north and northeast slopes of Mt. Goulinás (C. Greece) the forests of Abies cephalonica, which have been reduced greatly in the past because of the human impact, now days are naturally regenerated and expanded. The vegetation of this forest type was studied with the use of 21 plots according to the Braun-Blanquet method. One community was distinguished (Abies cephalonica-community) with two variations and one face. All these were assigned to the order and class Quercetalia(-ea) pubescentis. Moreover, the structure, the floristic composition, the syndynamic and the synecology of the above community was studied. Floristic composition revealed the presence of many character species of the alliance Quercion confertae. This fact, together with soil degradation in the past, shows that firs have penetrated into the oak forests of the area and this tendency still exist. Abies cephalonica-community appears on flysch and limestone colluvial deposits, at altitudes of 800-1200 m, on slop...
The area "Elikodromio", at an altitude of 2000 m a.s.l. (near-by the "Spilios Agapitos" refuge) w... more The area "Elikodromio", at an altitude of 2000 m a.s.l. (near-by the "Spilios Agapitos" refuge) within the National Park of Mt Olympus, consists of a mosaic of vegetation with unusual physiognomy. The vegetation was studied phytosociologically using twenty relevés. The data analysis revealed three vegetation units: 1) Campanula rotundifolia s.l.-Pinus heldreichii unit (P. heldreichii of typical growth form); 2) Buxus sempervirens-Pinus heldreichii unit (P. heldreichii with creeping-shrub growth form that resembles the "Krummholz" form of Pinus mugo); and 3) Genista radiata-Buxus sempervirens unit. The area's vegetation is described and commented phytosociologically and ecologically on.
![Research paper thumbnail of Types of ecotopes in the area “Rodopi (Simida)” of the NATURA2000 network [in Greek]](https://attachments.academia-assets.com/46982936/thumbnails/1.jpg)
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Plants, 2021
A study of the trichomes types and distribution and pollen morphology was carried out in nine Mic... more A study of the trichomes types and distribution and pollen morphology was carried out in nine Micromeria taxa (M. cristata ssp. cristata, M. cristata ssp. kosaninii, M. croatica, M. graeca ssp. graeca, M. graeca ssp. fruticulosa, M. juliana, M. kerneri, M. longipedunculata and M. microphylla) and five closely related Clinopodium species (C. dalmaticum, C. frivaldszkyanum, C. pulegium, C. serpyllifolium and C. thymifolium) from the Lamiaceae family of the Balkan Peninsula. By scanning electron microscope, non-glandular trichomes, peltate and capitate trichomes were observed on the calyx, leaves and stem of the studied species. Two subtypes of capitate trichomes were observed in Micromeria species: subtype 1 (consisting of a basal epidermal cell and an elliptically shaped head cell) and subtype 2 (consisting of a basal epidermal cell, two to three stalk cells and a round head cell). In Clinopodium species, three types of capitate trichomes were observed: subtype 1, subtype 3 (consisti...
Phytologia Balcanica: International Journal of Balkan Flora and Vegetation, 2011
In the current study the authors report for the first time the occurrence of Salix ×velchevii, a ... more In the current study the authors report for the first time the occurrence of Salix ×velchevii, a recently described willow hybrid, in Greece. The specimens were collected from three localities in the northeastern part of the Drama Prefecture, at low altitudes, where both parent species were present. Detailed information concerning the taxon's ecology is provided too. Finally, a contribution to its description is made with the measurement and description of the leaf morphological characters and with the first- time description of the female catkins and fruits.
Progress in Botanical Research, 1998
A modern pollen deposition monitoring program has been initiated in Greece for the first time. Fo... more A modern pollen deposition monitoring program has been initiated in Greece for the first time. For this purpose six modified Tauber traps (Hicks and Hyvarinen, 1986), were placed on a transect from black pine (Pinus nigra) forest to the tree-line of Scots pine (Pinus sylvestris) in the Pieria mountains.
Phytochemistry, 2014
The chemical composition of the essential oil (analysed by GC and GC-MS), the types and distribut... more The chemical composition of the essential oil (analysed by GC and GC-MS), the types and distribution of trichomes and pollen morphology (analysed by scanning electron microscopy) were investigated in two closely related species, Micromeria kerneri Murb. and Micromeria juliana (L.) Benth. (Lamiaceae) from Southeast Europe as a contribution to their taxonomy. The essential oil of M. kerneri was characterized by a high concentration of oxygenated sesquiterpenes, with caryophyllene-oxide as the major compound. Caryophyllene-oxide was also the major component of the essential oil of M. juliana from all localities, except from Mt Krivošije (Montenegro), where piperitone oxide was the major constituent. Non-glandular trichomes, peltate trichomes, and two types of capitate trichomes (type 1 composed of one basal epidermal cell, and one head cell with subcuticular space; type 2 composed of one basal epidermal cell, two stalk cells, and one head cell with subcuticular space) were observed on leaves, the calyx and on the stem. Pollen of both species had six apertures (hexacolpate) set in the equatorial pollen belt (zonocolpate) and showed medium reticulate ornamentation. Multivariate analysis (PCA and UPGMA) of essential oil components clearly separated the investigated M. kerneri and M. juliana populations, and confirmed the opinion that they are different taxa. On the other hand, micromorphological traits between these species were the same. Nevertheless, definitive conclusions about the taxonomic relationships among these species will require genetic analysis.
Journal of Irrigation and Drainage Engineering, 2011
Owing to the difficulties in measuring daily reference potential evapotranspiration, its estimati... more Owing to the difficulties in measuring daily reference potential evapotranspiration, its estimation by means of the ASCE Penman-Monteith approach and various other empirical equations that are less demanding in terms of input data is favoured for various applications in vegetation science and climatology. This study presents the development of a Visual Basic software that can be used for the estimation of the daily PET ref by means of the standardized ASCE Penman-Monteith equation for both short (clipped grass) and tall (full-cover alfalfa) crops and thirteen additional empirical equations. Statistical measures of goodness of fit are also calculated to make it easier for users to compare and detect the empirical equations that have the minimum bias of estimation against the ASCE Penman-Monteith equation.
Phytologia Balcanica International Journal of Balkan Flora and Vegetation, 2011
In the current study the authors report for the first time the occurrence of Salix ×velchevii, a ... more In the current study the authors report for the first time the occurrence of Salix ×velchevii, a recently described willow hybrid, in Greece. The specimens were collected from three localities in the northeastern part of the Drama Prefecture, at low altitudes, where both parent species were present. Detailed information concerning the taxon's ecology is provided too. Finally, a contribution to its description is made with the measurement and description of the leaf morphological characters and with the first-time description of the female catkins and fruits.
Willdenowia
Eleftheriadou, E. & Raus, Th.: The vascular flora of the nature reserve Frak:to Virgin Forest of ... more Eleftheriadou, E. & Raus, Th.: The vascular flora of the nature reserve Frak:to Virgin Forest of Nomos Dramas (E Mak:edonia, Greece). -Willdenowia 25: 455-485. 1996. -ISSN 0511-9618. The nature reserve "Frak:to Virgin Forest of Nomos Dramas" (Central Rodopi massif, E Mak:edonia, Greece), established in 1980 to protect a unique area of upper montane forest untouched for c. 400 years, harbours the southemmost natural population of Picea abies in Europe and, within Greece, is of outstanding biogeographical interest owing to the boreal11nd Central European element, well represented in its vascular flora. A first floristic inventory of the area is presented, based on extensive recent field work and on scattered published information. Concise notes on the ecology and frequency of most taxa are provided. Ajuga pyramidalis, Anthemis orbelica, Cardamine amara, Centaurea stenolepis subsp. razgradensis, Chamaecytisus absinthoides subsp. rhodopaeus, Geum rhodopeum, Petasites kablikiamts, Primula e/atior subsp. elatior, Silene roemeri subsp. roemeri, Sorbus austriaca subsp. austriaca, and Thlaspi kovatsii are new to or reconfmned for the flora of Greece. Willdenowia 25 ~ 1996 459 woodpecker (Picoides tridactylus), and woodcock (Scolopax msticola). Examples of Central
On the north and northeast slopes of Mt. Goulinás (C. Greece) the forests of Abies cephalonica, w... more On the north and northeast slopes of Mt. Goulinás (C. Greece) the forests of Abies cephalonica, which have been reduced greatly in the past because of the human impact, now days are naturally regenerated and expanded. The vegetation of this forest type was studied with the use of 21 plots according to the Braun-Blanquet method. One community was distinguished (Abies cephalonica-community) with two variations and one face. All these were assigned to the order and class Quercetalia(-ea) pubescentis. Moreover, the structure, the floristic composition, the syndynamic and the synecology of the above community was studied. Floristic composition revealed the presence of many character species of the alliance Quercion confertae. This fact, together with soil degradation in the past, shows that firs have penetrated into the oak forests of the area and this tendency still exist. Abies cephalonica-community appears on flysch and limestone colluvial deposits, at altitudes of 800-1200 m, on slop...
The area "Elikodromio", at an altitude of 2000 m a.s.l. (near-by the "Spilios Agapitos" refuge) w... more The area "Elikodromio", at an altitude of 2000 m a.s.l. (near-by the "Spilios Agapitos" refuge) within the National Park of Mt Olympus, consists of a mosaic of vegetation with unusual physiognomy. The vegetation was studied phytosociologically using twenty relevés. The data analysis revealed three vegetation units: 1) Campanula rotundifolia s.l.-Pinus heldreichii unit (P. heldreichii of typical growth form); 2) Buxus sempervirens-Pinus heldreichii unit (P. heldreichii with creeping-shrub growth form that resembles the "Krummholz" form of Pinus mugo); and 3) Genista radiata-Buxus sempervirens unit. The area's vegetation is described and commented phytosociologically and ecologically on.