... From the Omalos meteorological station, only fragmentary data exist on temperature and precip... more ... From the Omalos meteorological station, only fragmentary data exist on temperature and precipitation, covering a three-year period (meteorological station of Omalos of Forest Research Institute and Kyriakakis, S., unpublished work). ...
Summary To ensure the long-term future of NATURA 2000 sites across Europe, effective techniques a... more Summary To ensure the long-term future of NATURA 2000 sites across Europe, effective techniques are required for evaluating and monitoring their conservation significance. This paper describes a GIS-based method that uses multi-criteria evaluation (MCE) to determine the conservation significance of vegetation communities and habitats for a case study of a proposed NATURA 2000 site on the northwest coast of Crete, Greece. The method uses the most frequently used criteria for the selection of priority areas for nature conservation—species and habitat diversity, rarity of species and habitats, naturalness, threat of human disturbance and replaceability. For each community and corresponding habitat type, each criterion was scored according to field data and expert knowledge using a numerical scale. The final conservation score for each community was derived using MCE within a GIS and mapped. The results demonstrated that the method is an effective tool for evaluating and comparing conservation significance and could be applied to other sites across Europe and to monitor change.
... After removing the overlapping releves of the Daphno-Page 137. PHYTOSOCIOLOGY OF THE GRASSLAN... more ... After removing the overlapping releves of the Daphno-Page 137. PHYTOSOCIOLOGY OF THE GRASSLANDS OF Mt RANGEON 119 Festucetalia included in theAstragalo-Seslerion, the remaining 11 clusters were reanalysed. ...
... Thanks also are due to Prof. D. Lakušic for providing information on the range of Sesleria au... more ... Thanks also are due to Prof. D. Lakušic for providing information on the range of Sesleria autumnalis in Serbia and Montenegro. ... 62: 59-70. Addresses of the authors: Romeo Di Pietro, Dipartimento di Biologia vegetale, Università "La Sapienza", P.le A. Moro, 5, 00185, Roma. ...
... Acknowledgements This research was supported in part by Austrian Science Foundation (FWF) gra... more ... Acknowledgements This research was supported in part by Austrian Science Foundation (FWF) grant no. P10466-BIO to Walter GUTERMANN and Ladislav MUCINA. References BARKMAN, JJ 1958. ... Vergelijking met andere bossen. Meded. Biol. Stat. Wijster 146: 1-12. ...
In this study, we present an overall phylogenetic framework for Dianthus using four plastid regio... more In this study, we present an overall phylogenetic framework for Dianthus using four plastid regions (matK-trnK-psbA, rpl32-trnL, trnQ-rps16) and nuclear ITS and a species-level checklist for the genus developed by using all available databases and the literature. The trees from the plastid dataset depict a clade of Dianthus that also includes Velezia and a few taxa of Petrorhagia. New combinations in Dianthus are provided for these species. The checklist of Dianthus in this new delimitation covers 1781 names, with 384 accepted species, 150 subspecies, 12 heterotypic varieties and two forms (not counting autonyms), 1050 synonyms, 22 hybrid names and 172 unresolved names, 3 names were excluded. Implications for the evolution of flower characters, life forms, biogeography, as well as sectional classification are discussed based on the phylogenetic framework.
Biological invasions are one of the main threats to biodiversity, but they also offer insights on... more Biological invasions are one of the main threats to biodiversity, but they also offer insights on different ecological processes, as highlighted by the hypotheses posited to explain the phenomenon. We explore the relative importance of different hypotheses using biotic (native diversity) and abiotic factors (climate and landscape configuration) as proxies driving the spatial pattern of alien plant biodiversity in Greece. The strongest predictor of alien species richness is native species richness. Landscape heterogeneity boosts this relationship, but native and alien species prefer different conditions. Landscape composition and configuration explain more of the variance of alien diversity than of native diversity, with native diversity increasing at more naturally vegetated areas and alien diversity at agricultural lands. Climate is associated more strongly with native diversity than with alien diversity, with native diversity increasing in colder regions and alien diversity in war...
The heterotypic synonyms Verbascum limnense and Celsia tomentosa are neotypified and lectotypifie... more The heterotypic synonyms Verbascum limnense and Celsia tomentosa are neotypified and lectotypified, respectively, and their nomenclature is clarified. The former binomial represents the correct name at species rank for a range-restricted, paleoendemic plant confined to Central Greece. Furthermore, the new nothospecies Verbascum × sipiadense, representing the hybrid formula V. limnense × V. sinuatum, is described from the island of Evvia (Euboea).
During our floristic studies in southern Peloponnesus (Greece), specimens of a chasmophytic Campa... more During our floristic studies in southern Peloponnesus (Greece), specimens of a chasmophytic Campanula with an uncommon pinnatifid foliage were observed on the walls of the Kelefa fortress on the Mani Peninsula. After detailed morphological comparisons with comprehensive material of C. sect. Quinqueloculares from southern Greece, we identified the species as C. kamariana, a recently described endemic of Peloponnesus. Our morphological analysis of specimens collected from the Kelefa fortress revealed some deviations from the original description of the taxon. Therefore, here we provide an amended description of C. kamariana based on newly collected specimens and information on two additional localities where this local endemic occurs.
... From the Omalos meteorological station, only fragmentary data exist on temperature and precip... more ... From the Omalos meteorological station, only fragmentary data exist on temperature and precipitation, covering a three-year period (meteorological station of Omalos of Forest Research Institute and Kyriakakis, S., unpublished work). ...
Summary To ensure the long-term future of NATURA 2000 sites across Europe, effective techniques a... more Summary To ensure the long-term future of NATURA 2000 sites across Europe, effective techniques are required for evaluating and monitoring their conservation significance. This paper describes a GIS-based method that uses multi-criteria evaluation (MCE) to determine the conservation significance of vegetation communities and habitats for a case study of a proposed NATURA 2000 site on the northwest coast of Crete, Greece. The method uses the most frequently used criteria for the selection of priority areas for nature conservation—species and habitat diversity, rarity of species and habitats, naturalness, threat of human disturbance and replaceability. For each community and corresponding habitat type, each criterion was scored according to field data and expert knowledge using a numerical scale. The final conservation score for each community was derived using MCE within a GIS and mapped. The results demonstrated that the method is an effective tool for evaluating and comparing conservation significance and could be applied to other sites across Europe and to monitor change.
... After removing the overlapping releves of the Daphno-Page 137. PHYTOSOCIOLOGY OF THE GRASSLAN... more ... After removing the overlapping releves of the Daphno-Page 137. PHYTOSOCIOLOGY OF THE GRASSLANDS OF Mt RANGEON 119 Festucetalia included in theAstragalo-Seslerion, the remaining 11 clusters were reanalysed. ...
... Thanks also are due to Prof. D. Lakušic for providing information on the range of Sesleria au... more ... Thanks also are due to Prof. D. Lakušic for providing information on the range of Sesleria autumnalis in Serbia and Montenegro. ... 62: 59-70. Addresses of the authors: Romeo Di Pietro, Dipartimento di Biologia vegetale, Università "La Sapienza", P.le A. Moro, 5, 00185, Roma. ...
... Acknowledgements This research was supported in part by Austrian Science Foundation (FWF) gra... more ... Acknowledgements This research was supported in part by Austrian Science Foundation (FWF) grant no. P10466-BIO to Walter GUTERMANN and Ladislav MUCINA. References BARKMAN, JJ 1958. ... Vergelijking met andere bossen. Meded. Biol. Stat. Wijster 146: 1-12. ...
In this study, we present an overall phylogenetic framework for Dianthus using four plastid regio... more In this study, we present an overall phylogenetic framework for Dianthus using four plastid regions (matK-trnK-psbA, rpl32-trnL, trnQ-rps16) and nuclear ITS and a species-level checklist for the genus developed by using all available databases and the literature. The trees from the plastid dataset depict a clade of Dianthus that also includes Velezia and a few taxa of Petrorhagia. New combinations in Dianthus are provided for these species. The checklist of Dianthus in this new delimitation covers 1781 names, with 384 accepted species, 150 subspecies, 12 heterotypic varieties and two forms (not counting autonyms), 1050 synonyms, 22 hybrid names and 172 unresolved names, 3 names were excluded. Implications for the evolution of flower characters, life forms, biogeography, as well as sectional classification are discussed based on the phylogenetic framework.
Biological invasions are one of the main threats to biodiversity, but they also offer insights on... more Biological invasions are one of the main threats to biodiversity, but they also offer insights on different ecological processes, as highlighted by the hypotheses posited to explain the phenomenon. We explore the relative importance of different hypotheses using biotic (native diversity) and abiotic factors (climate and landscape configuration) as proxies driving the spatial pattern of alien plant biodiversity in Greece. The strongest predictor of alien species richness is native species richness. Landscape heterogeneity boosts this relationship, but native and alien species prefer different conditions. Landscape composition and configuration explain more of the variance of alien diversity than of native diversity, with native diversity increasing at more naturally vegetated areas and alien diversity at agricultural lands. Climate is associated more strongly with native diversity than with alien diversity, with native diversity increasing in colder regions and alien diversity in war...
The heterotypic synonyms Verbascum limnense and Celsia tomentosa are neotypified and lectotypifie... more The heterotypic synonyms Verbascum limnense and Celsia tomentosa are neotypified and lectotypified, respectively, and their nomenclature is clarified. The former binomial represents the correct name at species rank for a range-restricted, paleoendemic plant confined to Central Greece. Furthermore, the new nothospecies Verbascum × sipiadense, representing the hybrid formula V. limnense × V. sinuatum, is described from the island of Evvia (Euboea).
During our floristic studies in southern Peloponnesus (Greece), specimens of a chasmophytic Campa... more During our floristic studies in southern Peloponnesus (Greece), specimens of a chasmophytic Campanula with an uncommon pinnatifid foliage were observed on the walls of the Kelefa fortress on the Mani Peninsula. After detailed morphological comparisons with comprehensive material of C. sect. Quinqueloculares from southern Greece, we identified the species as C. kamariana, a recently described endemic of Peloponnesus. Our morphological analysis of specimens collected from the Kelefa fortress revealed some deviations from the original description of the taxon. Therefore, here we provide an amended description of C. kamariana based on newly collected specimens and information on two additional localities where this local endemic occurs.
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