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Phenols in leaves and bark of Fagus sylvatica as determinants of insect occurrences.

Petrakis PV, Spanos K, Feest A, Daskalakou E - Int J Mol Sci (2011)

Bottom Line: We found 298 insect species associated with beech trees and dead beech wood.While F. sylvatica and Quercus (oak) are confamilial, there are great differences in richness of the associated entomofauna.Bark and leaf biophenols from beech indicate that differences in plant secondary metabolites may be responsible for the differences in the richness of entomofauna in communities dominated by beech and other deciduous trees.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Entomology, National Agricultural Research Foundation, Institute for Mediterranean Forest Ecosystem Research, Terma Alkmanos, Athens 11528, Greece; E-Mail: edaskalakou@fria.gr.

ABSTRACT
Beech forests play an important role in temperate and north Mediterranean ecosystems in Greece since they occupy infertile montane soils. In the last glacial maximum, Fagus sylvatica (beech) was confined to Southern Europe where it was dominant and in the last thousand years has expanded its range to dominate central Europe. We sampled four different beech forest types. We found 298 insect species associated with beech trees and dead beech wood. While F. sylvatica and Quercus (oak) are confamilial, there are great differences in richness of the associated entomofauna. Insect species that inhabit beech forests are less than one fifth of those species living in oak dominated forests despite the fact that beech is the most abundant central and north European tree. There is a distinct paucity of monophagous species on beech trees and most insect species are shared between co-occurring deciduous tree species and beech. This lack of species is attributed to the vegetation history and secondary plant chemistry. Bark and leaf biophenols from beech indicate that differences in plant secondary metabolites may be responsible for the differences in the richness of entomofauna in communities dominated by beech and other deciduous trees.

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Map showing the sampled sites in Greece. The southern limit of F. sylvatica is also shown.
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f1-ijms-12-02769: Map showing the sampled sites in Greece. The southern limit of F. sylvatica is also shown.

Mentions: Four sites were intensively studied (insects collected, bark and leaf phenolics determined and plant coverage measured) in northern Greece (Figure 1). The sites were on a variety of geological substrates and deep soils. Two sites were selected at (i) Aghioneri, Prespa, Mt Triklarion, 40°44′N, 21°7′E, northern exposure, 1650 m a.s.l., is a monospecific 120 year old forest; (ii) Aghioneri, Mt Triclarion, 40°43′N, 21°8′E, north-western exposure, 1600 m a.s.l., is a mixed deciduous 60 year old forest with several other species (Table 1); (iii) in the virgin forest at Fracto, Drama Mt Western Rodopi, 41′33′N, 24°31′E, northern exposure, 1600 m a.s.l., where beech co-dominates with Quercus frainetto and Q. petraea; (iv) Bellavoda, Prespa Mt Peristeri, 40°50′N, 21°13′E, northern exposure, 1700 m a.s.l., where beech co-dominates with Abies borisii-regis [8].


Phenols in leaves and bark of Fagus sylvatica as determinants of insect occurrences.

Petrakis PV, Spanos K, Feest A, Daskalakou E - Int J Mol Sci (2011)

Map showing the sampled sites in Greece. The southern limit of F. sylvatica is also shown.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC3116155&req=5

f1-ijms-12-02769: Map showing the sampled sites in Greece. The southern limit of F. sylvatica is also shown.
Mentions: Four sites were intensively studied (insects collected, bark and leaf phenolics determined and plant coverage measured) in northern Greece (Figure 1). The sites were on a variety of geological substrates and deep soils. Two sites were selected at (i) Aghioneri, Prespa, Mt Triklarion, 40°44′N, 21°7′E, northern exposure, 1650 m a.s.l., is a monospecific 120 year old forest; (ii) Aghioneri, Mt Triclarion, 40°43′N, 21°8′E, north-western exposure, 1600 m a.s.l., is a mixed deciduous 60 year old forest with several other species (Table 1); (iii) in the virgin forest at Fracto, Drama Mt Western Rodopi, 41′33′N, 24°31′E, northern exposure, 1600 m a.s.l., where beech co-dominates with Quercus frainetto and Q. petraea; (iv) Bellavoda, Prespa Mt Peristeri, 40°50′N, 21°13′E, northern exposure, 1700 m a.s.l., where beech co-dominates with Abies borisii-regis [8].

Bottom Line: We found 298 insect species associated with beech trees and dead beech wood.While F. sylvatica and Quercus (oak) are confamilial, there are great differences in richness of the associated entomofauna.Bark and leaf biophenols from beech indicate that differences in plant secondary metabolites may be responsible for the differences in the richness of entomofauna in communities dominated by beech and other deciduous trees.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Entomology, National Agricultural Research Foundation, Institute for Mediterranean Forest Ecosystem Research, Terma Alkmanos, Athens 11528, Greece; E-Mail: edaskalakou@fria.gr.

ABSTRACT
Beech forests play an important role in temperate and north Mediterranean ecosystems in Greece since they occupy infertile montane soils. In the last glacial maximum, Fagus sylvatica (beech) was confined to Southern Europe where it was dominant and in the last thousand years has expanded its range to dominate central Europe. We sampled four different beech forest types. We found 298 insect species associated with beech trees and dead beech wood. While F. sylvatica and Quercus (oak) are confamilial, there are great differences in richness of the associated entomofauna. Insect species that inhabit beech forests are less than one fifth of those species living in oak dominated forests despite the fact that beech is the most abundant central and north European tree. There is a distinct paucity of monophagous species on beech trees and most insect species are shared between co-occurring deciduous tree species and beech. This lack of species is attributed to the vegetation history and secondary plant chemistry. Bark and leaf biophenols from beech indicate that differences in plant secondary metabolites may be responsible for the differences in the richness of entomofauna in communities dominated by beech and other deciduous trees.

Show MeSH
Related in: MedlinePlus