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Selection: with tag quercus-spp [92 articles] 


Post-fire spread of alien plant species in a mixed broad-leaved forest of the Insubric region

Flora - Morphology, Distribution, Functional Ecology of Plants, Vol. 207, No. 1. (January 2012), pp. 19-29,


How do tree species regenerate and which ecological conditions are required after forest fire in the Insubric region of the Alps? Are indigenous stand-forming tree species resistant over the invasion of alien plant species after such a disturbance? We addressed these questions in a case study in the Swiss canton of Ticino. In April 2006, a surface fire with severe intensity burnt a forest area of 55 ha on a south-facing slope (400–800 m.a.s.l.). The dominant trees in the investigated area ...


Genetic divergence in forest trees: understanding the consequences of climate change

Functional Ecology, Vol. 28, No. 1. (February 2014), pp. 22-36,


[::] Predicted climate change is heading in many respects into untested environmental conditions for trees and to the reshuffling of species distributions. We explore the consequences that these changes are likely to have on population differentiation of adaptive traits. Superimposed on the spatial redistribution of the species, will there be a redistribution of their genetic variation? [::] We base our predictions on a conceptual framework, whose elements are the extant differentiation, and the predicted divergent evolution of populations along purposely chosen altitudinal/latitudinal ...


The effects of air pollutants on vegetation and the role of vegetation in reducing atmospheric pollution

In The Impact of Air Pollution on Health, Economy, Environment and Agricultural Sources (26 September 2011), pp. 241-280,
edited by Mohamed Khallaf


[Excerpt: Introduction] The main air pollutants are represented by gases forms, particles in suspension, different ionizing radiation and noise. [\n] gases forms are: oxidized and reduced forms of carbon (CO2, CO, CH4), of nitrogen (NO2, NO, N2O4, NH3, NH4+), SO2, O3, C6H6 vapours, Hg, volatile phenols, Cl2, etc. [\n] The particulate forms are: PM10 and PM2.5 particulate matter, heavy metals with toxic effect (Pb, Ni, Cd, As), polycyclic aromatic hydrocarbons PAHs, etc. [\n] Atmospheric pollutants have a negative effect on the plants; they can ...


Generalized allometric volume and biomass equations for some tree species in Europe

In European Journal of Forest Research, Vol. 126, No. 2. (2007), pp. 157-166,


Since biomass is one of the key variables in ecosystem studies, widespread effort has aimed to facilitating its estimation. Numerous stand-specific volume and biomass equations are available, but these cannot be used for scaling up biomass to the regional level where several age-classes and structural types of stands coexist. Therefore simplified generalized volume and biomass equations are needed. In the present study, generalized biomass and volume regression equations were developed for the main tree species in Europe. These equations were based ...


Combining forest structure data and fuel modelling to classify fire hazard in Portugal

Annals of Forest Science, Vol. 66, No. 4. (2009), pp. 415-415,


Fire management activities can greatly benefit from the description of wildland fuel to assess fire hazard. [\n] A forest typology developed from the Portuguese National Forest Inventory that combines cover type (the dominant overstorey species) and forest structure defined as a combination of generic stand density (closed or open) and height (low or tall) is translated into fuel models. Fire behaviour simulations that accounted for the fire environment modification induced by stand structure resulted in an objective and quantitative assessment of fire ...


Temperate and boreal rainforest relicts of Europe

In Temperate and Boreal Rainforests of the World: Ecology and Conservation (2011), pp. 154-180,
Keywords: abies-alba   acer-pseudoplatanus   aconitum-spp   alces-alces   alnus-glutinosa   alnus-incana   anemone-trifolia   aquila-chrysaetos   arthonia-leucopellaea   asplenium-scolopendrium   athyrium-filix-femina   balkan-peninsula   betula-pendula   betula-pubescens   biodiversity   bison-bonasus   boreal-forests   buteo-buteo   calluna-vulgaris   canis-lupus   capreolus-capreolus   carduus-personata   central-europe   cervus-elaphus   cervus-nippon   cicerbita-alpine   conservation   cortusa-matthioli   corylus-avellana   dryocopus-martius   dryopteris-carthusiana   dryopteris-dilatata   dryopteris-spp   endangered-species   epimedium-alpinum   euphorbia-austriaca   europe   fagus-sylvatica   felis-silvestris   forest-resources   fragmentation   fraxinus-excelsior   grazing   gymnocarpium-dryopteris   habitat-conservation   hacquetia-epipactis   hotspot   ilex-aquifolium   lagopus-muta   lamium-orvala   larix-eurolepis   lichens   lobaria-amplissima   lobaria-scrobiculata   lunaria-rediviva   lynx-lynx   lyrurus-tetrix   meles-meles   milvus-milvus   norway   omphalodes-verna   picea-abies   picea-sitchensis   pinus-contorta   pleurospermum-austriacum   populus-tremula   prunus-avium   pseudotsuga-menziesii   pyrenula-laevigata   quercus-petraea   quercus-robur   quercus-spp   rainforest   rhododendron-ponticum   rupicapra-rupicapra   salix-caprea   salix-spp   sanicula-europaea   saxifraga-rotundifolia   sorbus-aucuparia   strix-uralensis   sus-scrofa   taxus-baccata   temperate-forests   tetrao-urogallus   thalictrum-aquilegifolium   thelotrema-lepadinum   tilia-cordata   tilia-platyphyllos   ulmus-glabra   vaccinium-myrtillus  


European temperate rainforests are disjunctly distributed from ~45° to 69°N latitude, where they are influenced by maritime climates (see figure 6-1). Storms originating in the North Atlantic and the Mediterranean (Balkans) provide for mild winters, cool summers, and adequate precipitation to sustain rainforests throughout the year. Due to extensive deforestation, however, today’s European rainforests are mere fragments of primeval rainforests. A reminder of a bygone era when rainforests flourished, they are barely hanging on as contemporary rainforest relicts (see box 6-1). ...


(INRMM-MiD internal record) List of keywords of the INRMM meta-information database - part 33

(February 2014)
Keywords: inrmm-list-of-tags   pyrus-tamamschianae   pyrus-theodorovii   pyrus-vallis-demonis   pyrus-voronovii   python   q-learning   qualitative-research   quantile-95   quantitive-variation   quantity-calculus   quantum-computing   quantum-gis   quarantine   quaternary   quercus-agrifolia   quercus-alnifolia   quercus-borealis   quercus-calliprinos   quercus-canariensis   quercus-castaneifolia   quercus-cerrioides   quercus-cerris   quercus-chrysolepis   quercus-coccifera   quercus-coccinea   quercus-crenata   quercus-dalechampii   quercus-douglasii   quercus-emoryi   quercus-engelmannii   quercus-faginea   quercus-falcata   quercus-frainetto   quercus-gambelii   quercus-garryana   quercus-hartwissiana   quercus-ilex   quercus-imbricaria   quercus-imeretina   quercus-kelloggii   quercus-lanuginosa   quercus-liaotungensis   quercus-lobata   quercus-macranthera   quercus-macrolepis   quercus-mirbeckii   quercus-mongolica   quercus-palustris   quercus-parvula   quercus-pedunculata   quercus-pedunculiflora   quercus-petraea   quercus-polycarpa   quercus-pontica   quercus-prinus   quercus-pubescens   quercus-pyrenaica   quercus-robur   quercus-rotundifolia   quercus-rubra   quercus-sessiflora   quercus-sessiliflora   quercus-sicula   quercus-spp   quercus-suber   quercus-trojana   quercus-variabilis   quercus-virgiliana   quercus-virginiana   quercus-wislizeni   quercus-x-morisii   radar   radial-growth   radiocarbon-chronology   rain-shadow   rainfall   rainfall-deciles   rainforest   rainy-days_daily-rainfall   random-forest   random-forests   random-walk   range-altitude   range-modelling   range-shift   rank-based-analysis   rapid-assessment   rare-events   rarely-observed-plant-species   rasterisation   ravine-forest   rcp26   rcp45   rcp60   rcp85   realised-vs-potential-range   realized-niche   reassuring-learning   receptivity  


List of indexed keywords within the transdisciplinary set of domains which relate to the Integrated Natural Resources Modelling and Management (INRMM). In particular, the list of keywords maps the semantic tags in the INRMM Meta-information Database (INRMM-MiD). [\n] The INRMM-MiD records providing this list are accessible by the special tag: inrmm-list-of-tags ( ). ...


Relationship between treefall direction, slope-aspect, and wind in eight old-growth oak stands in the Central Hardwood Forest, USA

Journal of the Torrey Botanical Society, Vol. 137, No. 4. (2010), pp. 391-400,
Keywords: quercus-spp   tipovers   tree-fall   windstorm  


This study examined the relationship between direction of treefall, slope-aspect and prevailing wind in five old-growth stands where single-tree canopy gaps characterize the dominant disturbance regime. All live and downed trees were inventoried in 0.45-ha sample plots, and crown sizes of live trees were measured along two perpendicular axes. Directions of fall and slope-aspect of downed trees also were recorded. Regional prevailing winds and wind gusts were obtained from four nearby airports. I used circular statistics to determine if directions of ...


Accelerated succession following an intense wind storm in an oak-dominated forest

Forest Ecology and Management, Vol. 279 (2012), pp. 141-146,


Catastrophic wind events often contribute to stand dynamics of central hardwood forests, yet opportunities to study them are limited. As luck would have it, we sampled 54 long-term monitoring plots (0.04 ha) on the Shawnee National Forest in southern Illinois prior to an intense 2009 windstorm that swept across the central United States. The sampled plots, which were resampled immediately after the storm, were situated across a gradient of topographic positions. Overstory trees (⩾6.6 cm dbh), saplings (⩾1 m tall and ...


Climate change increases the drought risk in Central European forests: what are the options for adaptation?

Forestry Journal, Vol. 60, No. 1. (1 January 2014),


The paper presents information on the projected drought exposure of Central Europe, describes the anticipated dynamics of the regional forests, and identifies measures facilitating the adaptation of forests to climate change-induced drought risk. On the basis of an ensemble of climate change scenarios we expect substantial drying in southern Slovakia and Hungary, while such trends were found to be less pronounced for the Czech Republic and Austria. In response to these climate trajectories, a change in species composition towards a higher ...


Runoff production and erosion processes on a dehesa in Western Spain

Geographical Review, Vol. 92, No. 3. (2002), pp. 333-353,


Runoff generation and soil erosion were investigated at the Guadalperalon experimental watershed (western Spain), within the land-use system known as dehesa, or open, managed evergreen forests. Season and type of surface were found to control runoff and soil-loss rates. Five soil units were selected as representative of surface types found in the study area: hillslope grass, bottom grass, tree cover, sheep trails, and shrub cover. Measurements were made in various conditions with simulated rainfall to gain an idea of the annual ...


Occurrence of Phytophthora multivora and Phytophthora plurivora in the Czech Republic

Plant Protection Science, Vol. 49 (2013), pp. 155-164


Beginning in 2006, a survey of two related Phytophthora species, P. multivora and P. plurivora, was performed in the Czech Republic. Both pathogens were distributed throughout a broad range of environments including forest and riparian stands and probably became naturalised in the country. The two species differed in their frequency and elevational distribution. P. multivora was less frequent, but commonly occurred in the lowest regions such as Central Bohemia and South Moravia, i.e. areas which generally exhibit a high level of ...


Growth of coppice sessile oak and mixed sessile oak hungarian oak stands in eastern bulgaria and object of management.

Gorskostopanska Nauka (1984), pp. 41-55


Studies were carried out in eastern Bulgaria in the regions of the Strandja Mountains, the eastern Balkan Mountains and the Sakar Mountain, where the basic complexes of oak coppice forests of Bulgaria occur. Data from temporary and stationary sample plots and from model stems by analysis stand development were examined, using the basic survey indices height, diameter, basal area, growing stock and increment of the coppice sessile oak and the mixed sessile oak-Hungarian oak stands. The stems of the separate tree ...


Enumeración de los Quercus de la Península Ibérica

Rivasgodaya, Vol. 6 (1991), pp. 101-110

Multiple factors associated with oak decline in southern Italy

Phytopathologia Mediterranea, Vol. 37, No. 1. (1998), pp. 1-8


Severe decline of oak trees has been observed in Italy in the last fifteen years and attributed to several biotic and abiotic causes. In order to assess the spread and the etiology of oak decline in southern Italy, investigations have been carried out in eight declining oak woods. Oak species affected, site and climatic conditions, plant water potential, anthropic factors (pasturing, silvicultural management, air pollution) and fungi associated to declining plants were evaluated. Quercus cerris L. and Q. frainetto Ten. were ...


Quercus L.

In Flora Europaea, Volume 1 - Psilotaceae to Platanaceae (1993), pp. 72-76


Published in five volumes, Flora Europaea is the definitive account of the flowering plants, ferns and fern-allies of Europe, covering all plants growing in the wild, including many naturalized species and all widely cultivated crop species. It provides full keys and concise descriptions of families, genera, species and subspecies, together with bibliographic details for accepted species, summaries of geographical distribution, chromosome numbers and habitat information. This new edition of Volume 1 brings the treatment of the first 79 families up to ...


Syntaxonomy of the oak forests in the Pleven district (Danube plane in Bulgaria)

Fitosociologia, Vol. 40, No. 1. (2003), pp. 23-31


In the papers are analyzed the releves of phytocoenoses of Quercus robur and Quercus cerris from the Middle Danubian plane. Two new associations are differentiated: mesophitic, Scutellario altissimae-Quercetum roboris, on lowland platforms with aluvial soils and xerotermic, Cotyno coggygriae-Quercetum cerris, on dry hills over chernozem soils. Hereby are considered their relationships with high syntaxa and their analogy with similar associations described in Serbia and in Romania. ...


Vegetation types of dry-mesic oak forests in Slovakia

Preslia, Vol. 77 (2005), pp. 241-261


Typology of dry-mesic oak forest vegetation of Slovakia is presented. Seven vegetation types were distinguished based on a Braun-Blanquetian relevé data analysis using a TWINSPAN classification algorithm. The identified vegetation types are related to seven syntaxa traditionally used by Central European phytosociologists: dry-mesic oak forest on sandy soils – Carici fritschii-Quercetum roboris, dry-mesic oak forest on heavy soils – Potentillo albae-Quercetum, dry-mesic oak forest on basic rocky substrates – Corno-Quercetum, dry-mesic oak forest on acidic substrates – Sorbo torminalis-Quercetum, dry oak ...


Chloroplast DNA variation in European white oaks

Forest Ecology and Management, Vol. 156, No. 1-3. (February 2002), pp. 5-26,


A consortium of 16 laboratories have studied chloroplast DNA (cpDNA) variation in European white oaks. A common strategy for molecular screening, based on restriction analysis of four PCR-amplified cpDNA fragments, was used to allow comparison among the different laboratories. A total of 2613 oak populations (12,214 individual trees from eight species) were sampled from 37 countries, and analysed with the four fragments. They belong to eight related oak species: Quercus robur, Q. petraea, Q. pubescens, Q. frainetto, Q. faginea, Q. pyrenaica, ...


White oaks phylogeography in the Iberian Peninsula

Forest Ecology and Management, Vol. 156, No. 1-3. (February 2002), pp. 89-102,


The geographic distribution of maternally inherited chloroplast DNA polymorphisms was studied to determine the phylogeographic structure of white oaks in the Iberian Peninsula. Almost 1000 mature trees from nearly 200 populations were sampled in the distribution areas of the six white oak species that are recognised in Iberia. The analysed trees roughly represent the species distribution and their respective abundance. The PCR–RFLP procedure used by all project partners revealed up to 14 cpDNA haplotypes. Seven of them had not been previously ...


Oak-hornbeam forests of the Czech Republic: geographical and ecological approaches to vegetation classification

Preslia, Vol. 76, No. 4. (2004), pp. 291-311


Vegetation classification should reflect the major environmental and phytogeographical gradients that influence species composition. However, the importance of different gradients depends on the geographical scale of particular studies. Locally defined vegetation units usually reflect local gradients, such as disturbance and soil properties, while regionally defined units reflect macroclimatic patterns and different evolutionary and migration histories of large regions. The classification of Central European oak-hornbeam forests (Carpinion alliance) is an example of a widely accepted, broad- scale classification with geographically delimited associations. ...


Comparative leaf surface morphology and molecular data of five oaks of the subgenus Quercus Oerst (Fagaceae)

Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, Vol. 143, No. 3. (1 November 2009), pp. 543-554,


Abstract Comparisons between different data sets are important in taxonomic studies, particularly for complex taxa such as the genus Quercus. However, there is scarce literature on comparative morphological and molecular analyses in oaks. Here we describe an experimental approach based on the correlation between micromorphological features and molecular data in order to characterize and discriminate among five closely related species: Q. robur, Q. petraea, Q. frainetto, Q. pubescens and Q. virgiliana. ...


Phylogeographic structure of white oaks throughout the European continent

Genetics, Vol. 146, No. 4. (1997), pp. 1475-1487


Patterns of chloroplast DNA (cpDNA) variation were studied in eight white oak species by sampling 345 populations throughout Europe. The detection of polymorphisms by restriction analysis of PCR-amplified cpDNA fragments allowed the identification of 23 haplotypes that were phylogenetically ordered. A systematic hybridization and introgression between the eight species studied is evident. The levels of subdivision for unordered (GST) and ordered (NST) alleles are very high and close (0.83 and 0.85). A new statistical approach to the quantitative study of phylogeography ...


Taxonomical revision about the deciduous oaks of Sicily

Webbia, Vol. 54, No. 1. (1 January 1999), pp. 1-72,


On the basis of literature, herbarium and field investigations, a survey of deciduous oaks occurring in Sicily is presented. A morphological description with drawings and some chorological and ecological observations is reported for each species. It is emphasized that the phenotypical variability observed within the Q. humilis group in Sicily, even if the S. Thyrrhenian area is considered as probable center of speciation for the group, related to deforestation, which had previously favoured the genetic mixing among the population. This study ...


La classe Quercetea ilicis in Sicilia

Bollettino dell’Accademia Gioenia di Scienze Naturali, Vol. 41 (2009), pp. 1-124


On the basis of literature data and numerous unpublished relevès, a syntaxonomic revision of Quercetea ilicis class in Sicily is given. The surveyed associations are represented by evergreen, deciduous o mixed plant communities forming shrubland, maquis, bushland and woodland. They are communities dominated by sclerophylls or deciduous trees, widespread from the shoreline up to 1400 (1600) m of altitude, within the bioclimatic belts between the inframediterranean dry lower one and the supramediterranean subhumid-humid one. The study, regarding all the Sicilian ...


Chloroplast DNA variation of white oaks in northern Balkans and in the Carpathian Basin

Forest Ecology and Management, Vol. 156, No. 1-3. (February 2002), pp. 197-209,


A total of 1113 oak trees from 222 populations originating from eight countries (Austria, Bosnia-Herzegovina, Croatia, Hungary, Romania, Slovakia, Slovenia, Yugoslavia) were sampled in natural populations or in provenance tests. The sampled trees belong to four different species (Quercus robur, Quercus petraea, Quercus pubescens, Quercus frainetto) and to several putative subspecies. Variation at four chloroplast DNA (cpDNA) fragments was studied using restriction enzymes, resulting in the detection of 12 haplotypes. One haplotype was present in 36% of the trees, and six ...


Syntaxonomical revision of Quercetalia pubescenti-petraeae in the Italian Peninsula

Fitosociologia, Vol. 41, No. 1. (2004), pp. 87-164


This paper presents a new sintaxonomical scheme for Quercetalia pubescenti-petraeaeQuercetalia pubescenti-petraeae order occurs in the study area in the form of five alliances: Quercion pubescenti-petraeae (suball.: Buxo-Quercenion pubescentis), Carpinion orientalisCampanulo-Ostryenion, Laburno-Ostryenion stat. nov.; Lauro-Quercenion pubescentis and Cytiso-Quercenion pubescentis), Teucrio siculi-Quercion cerridis nom. conserv. propos. (suball.: Teucrio-Quercenion cerridis suball. nov., Ptilostemo-Quercenion cerridis); Pino-Quercion congestae (suball.: Pino-Quercenion congestaeQuercenion virgilianae suball. nov.) and Erythronio-Quercion petraeae. The Quercion pubescenti-petraeae is a sintaxon with a sub-continental character and within the Italian Peninsula it is restricted to ...


A phytosociological study of the deciduous oak woods of Sardinia (Italy)

Fitosociologia, Vol. 41, No. 1. (2004), pp. 53-65


We present here the results from a phytosociological and synchorological study of the deciduous oak woods of Sardinia. This vegetation analysis has allowed the individuation of three new associations: Lonicero implexae-Quercetum virgilianae, Ornithogalo pyrenaici-Quercetum ichnusae and Glechomo sardoae-Quercetum congestae. The Lonicero implexae-Quercetum virgilianae association includes the woods on calcareous substrata spread throughout Northern Sardinia, which can occasionally be found in southern areas; the first of these are rich in mesophilous species and are attributed to the subassociation cyclaminetosum repandi, while the ...


Genetic structure of a natural oak community in central Italy: Evidence of gene flow between three sympatric white oak species (Quercus, Fagaceae)

Annals of Forest Research, Vol. 57, No. 2. (20 July 2015), pp. 1-12,


Incomplete reproductive barriers between species, especially in sympatric areas where several species coexist, may result in hybridization and an increase in genetic diversity. Here we assessed the amount of genetic diversity in a community of three interfertile and sympatric European oaks (Quercus frainetto Ten., Q. petraea Liebl. Matt. and Q. pubescens Willd.) situated in central Italy. We used 11 microsatellite markers derived from Expressed Sequence Tag (EST-SSRs) and we implemented a Bayesian clustering analysis to assign individuals to species or hybrids. ...


Predicting soil erosion with RUSLE in Mediterranean agricultural systems at catchment scale

Soil Science, Vol. 174, No. 5. (May 2009), pp. 272-282,


Accurate assessment of soil loss is essential for sustainable agricultural production, management, and conservation planning, especially in productive rain-fed agroecosystems and protected areas. The European Union considers soil as a nonrenewable resource and identifies that soil degradation has strong impacts on soil and water resources. In this work, the Revised Universal Soil Loss Equation model was applied within a geographic information system in the Estaña catchment (Spanish pre-Pyrenees) as representative of a Mediterranean agroecosystem to elaborate a map of soil erosion ...


Host preferences of the gypsy moth in eastern North American versus European forests

Revue d'Entomologie du Quebec, Vol. 31, No. 1-2. (1986), pp. 43-51


The host preferences reported for gypsy month, Lymantria dispar (L.) (Lepidoptera: Lymantriidae), are compiled and compared for temperate zone forests in Europe versus eastern North America. Species of Larix, Salix, Populus, Betula, Alnus, Ostrya, Fagus, Quercus, Castanea, Amelanchier, Crataegus, Prunus, Sorbus, Malus, and Tilia are clearly preferred by gypsy moth larvae in both Europe and North America. North American species of Carya, Sassafras, Hamamelis, Rhus, and Nyssa are acceptable but species of Maclura, Morus, Liriodendron, Platanus, Gleditsia, Robinia, Gymmocladus, Ilex, Diospyros, ...


Forest continuity and conservation value in Western Europe

The Holocene, Vol. 25, No. 1. (01 January 2015), pp. 194-202,


Long forest continuity has often been linked with high conservation value in western European Quercus and Fagus woodlands, but this assumption of long continuity has rarely been tested. Birks discussed the antiquity of bryophyte-rich Quercus woodland in western United Kingdom, presenting evidence that the modern plant communities developed during the late Holocene influenced by human activities. We use pollen data from forest hollows to show that the modern communities within ancient woodlands are all significantly influenced by recent human disturbance. A ...



In Enzyklopädie der Holzgewächse: Handbuch und Atlas der Dendrologie


Unter den Buchengewächsen (Fagaceae) ist die Gattung Quercus die artenreichste Gattung. Die Angaben zur Artenzahl schwanken beträchtlich (350 bis 600); heute sind etwa 500-530 Eichenarten anerkannt. Quercus ist die wirtschaftlich bedeutsamste und am weitesten verbreitete Gattung der Familie der Fagaceae. ...



In Flora of North America North of Mexico, Vol. 3 (1997)


Flora of North America builds upon the cumulative wealth of information acquired since botanical studies began in the United States and Canada more than two centuries ago. Recent research has been integrated with historical studies, so that the Flora of North America is a single-source synthesis of North American floristics. FNA has the full support of scientific botanical societies and is the botanical community's vehicle for synthesizing and presenting this information. The Flora of North America Project will treat more than 20,000 ...


The ecology and silviculture of oaks

In The ecology and silviculture of oaks (2002),


This book contains 10 chapters divided into 3 sections. The first section consists 3 chapters on the ecological characteristics and distribution of oak species and the various kinds of oak forests in the USA. The next 2 chapters on regeneration ecology provide the critical interference between oak ecology and silviculture. The second section comprises 3 chapters covering site productivity and stand development. The third section comprises 4 chapters on silvicultural methods and the growth and yield of oak forests. ...


Evidence for hybridization and introgression within a species-rich oak (Quercus spp.) community

BMC Evolutionary Biology, Vol. 7, No. 1. (10 November 2007), 218,


Analysis of interspecific gene flow is crucial for the understanding of speciation processes and maintenance of species integrity. Oaks (genus Quercus, Fagaceae) are among the model species for the study of hybridization. Natural co-occurrence of four closely related oak species is a very rare case in the temperate forests of Europe. We used both morphological characters and genetic markers to characterize hybridization in a natural community situated in west-central Romania and which consists of Quercus robur, Q. petraea, Q. pubescens, and ...


Biogenic volatile organic compounds in the Earth system

New Phytologist, Vol. 183, No. 1. (July 2009), pp. 27-51,


Biogenic volatile organic compounds produced by plants are involved in plant growth, development, reproduction and defence. They also function as communication media within plant communities, between plants and between plants and insects. Because of the high chemical reactivity of many of these compounds, coupled with their large mass emission rates from vegetation into the atmosphere, they have significant effects on the chemical composition and physical characteristics of the atmosphere. Hence, biogenic volatile organic compounds mediate the relationship between the biosphere and ...


Diversity and ecological differentiation of oak forests in NW Thrace (Turkey)

Archives of Biological Sciences, Vol. 62, No. 3. (2010), pp. 705-718,


Quercus robur, Q. frainetto, Q. cerris and Q. petraea that predominate in forests in the Thrace region, a bridge between the Balkans and Anatolia, were sampled, elaborated and classified. The ecological conditions were estimated by bio-indicator values. Oak forests can be divided into four groups: Q. robur-Fraxinus angustifolia forests thriving in floodplains, Q. petraea forests found at higher altitudes, Q. frainetto-Carpinus orientalis forests appearing in the warmest and driest sites and Q. frainetto forests on more humid sites. It was established ...


That Sinking Feeling: Wetland Investigations of the Origins of Venice

Journal of Wetland Archaeology, Vol. 4, No. 1. (2004), pp. 139-153,


Abstract It is well known that Venice has always had an intimate association with the sea. Despite the historical interest the origins of the city have, until relatively recently, remained cloaked in obscurity. Until the mid-1980s Venice remained one of the few major historical cities in Europe where urban archaeology had yet to uncover significant information. Over the last two decades the situation has changed as shown by fifteen sites with early levels. Despite the difficulties of working in a tidal ...


Broadleaved tree species in conifer-dominated forestry: Regeneration and limitation of saplings in southern Sweden

Forest Ecology and Management, Vol. 214, No. 1–3. (2005), pp. 142-157,


Forests and forestry in Sweden are dominated by conifers. Silviculture using mixed or broadleaved stands is often recommended, but the degree to which broadleaves regenerate naturally needs to be clarified. The Swedish National Forest Inventory is here used for a region-wide study of broadleaved saplings (1.3 m tall to 4.9 cm dbh) regenerated naturally. For 12 species (taxa) in young forests (<7 m tall) and high forests (≥7 m), sapling densities were related to seven forest types and three productivity classes. Birch had highest densities in ...


Phytophthora ramorum and Sudden Oak Death in California: I. Host Relationships

In Gen. Tech. Rep. PSW-GTR-184 (2002), pp. 733-740


A new canker disease of Lithocarpus densiflorus, Quercus agrifolia, Q. kellogii, and Q. parvula var. shrevei in California is shown to be caused by Phytophthora ramorum. The pathogen is a recently described species that was previously known only from Germany and The Netherlands on Rhododendron and Viburnum. This disease has reached epidemic proportions in mixed evergreen and redwood forests over an area approximately 300 km long along the central coast of California. The most consistent and diagnostic symptoms on larger trees ...


Species-specific climate response of oaks (Quercus spp.) under identical environmental conditions

iForest - Biogeosciences and Forestry, Vol. 7, No. 2. (02 April 2014), pp. 61-69,


Oak forests play a major role in Britain due to their economic, social and historic value. Sudden oak death and general decline symptoms have therefore caused major concerns in the forestry sector over the past decade. Several strategies have been proposed to preserve the economic and social value of oak forests, including the planting of native species with more southerly origins, or non-native species of oak that may be better suited to the projected climate of the future. The Ovington research ...


Quercus cerris extracts limit Staphylococcus aureus biofilm formation

Journal of Ethnopharmacology, Vol. 144, No. 3. (December 2012), pp. 812-815,


Quercus cerris L., Fagaceae has been used in traditional Mediterranean medicine for numerous purposes, including anti-infective therapies for diarrhea and wound care. To evaluate the anti-staphylococcal activity of fractions of ethanolic extracts of Q. cerris leaf and stem/fruit samples in models for biofilm and growth inhibition. Ethanolic extracts of Q. cerris leaves and stems/fruits were prepared, resuspended in water and fractioned by successively partitioning with hexane, ethyl acetate and butanol. The ability of the fractions to inhibit Staphylococcus aureus biofilm formation ...


Improvement and silviculture of oaks in Hungary

Annales des Sciences Forestières, Vol. 50, No. 6. (1993), pp. 607-614


The most important tree species in Hungary are the indigenous oak species (Quercus sessiliflora, Q robur, Q cerris). They form mixed stands, most frequently with hornbeam (Carpinus betulus) and beech (Fagus sylvatica). They occupy nearly 35% of the Hungarian forests. For oak timber, the allowable cut exceeds demand; it is therefore possible to export the more valuable mixtures. Producing valuable oak timber is of great importance for Hungarian forestry. Veneer logs of good quality can be harvested from mixed 2-storied oak ...


Early Parasitoid Recruitment in Invading Cynipid Galls

In Galling Arthropods and Their Associates (2006), pp. 91-101,


Biological invasions are widely seen as the biggest threat to biodiversity next to the loss of habitats. One aspect of considerable interest is the recruitment of natural enemies after the establishment of the invad-ing species and how such enemies link invaders to native communities. However, not all invaders are invasive. Eight cynipid species originating in south-eastern Europe invaded Britain over the last 200 years. Presently they cause no economic concern or have any detectable detrimental effect on the native cynipid fauna. ...


Oak woodland vegetation of Turkey - a first overview based on multivariate statistics

Applied Vegetation Science, Vol. 15, No. 4. (October 2012), pp. 590-608,


[Questions] Turkey is home to more Quercus species than any other country in the western Palaearctic. To what extent is the taxonomic diversity reflected in compositional diversity of oak woodland vegetation? What are the main compositional gradients, their environmental correlates and associated gradients in species traits? How are the oak woodland types in Turkey distributed? What is their stand structure, ecological range, conservation value and how are they used? Which phytosociological syntaxa are represented? What gaps remain in knowledge of Turkey's oak ...


An overview of ecology and silviculture of indigenous oaks in France

Annales des Sciences Forestières, Vol. 53, No. 2-3. (1996), pp. 649-661,


There are nine species of oaks in French forests: Quercus petraea, Q robur, Q pubescens, Q pyrenaica, Q ilex, Q rubra, Q suber, Q coccifera and Q cerris. Among them, five are of major economic and ecological importance, either because of the quality and value of their wood or because of their geographic extension, or both. Two of these species are widespread in the hills and plains of the Atlantic and of the mid-European domains: Q petraea (sessile oak), and Q ...


Bark and wood boring insects involved in oak declines in Europe: Current knowledge and future prospects in a context of climate change

Forest Ecology and Management, Vol. 328, No. 0. (2014), pp. 79-93,


Abstract Oak declines are multifactorial processes in which bark and wood boring (BWB) beetles can act as major inciting factors, killing the weakened trees. Nonetheless, the current knowledge on the biology, ecology of these species is scattered and no efficient management strategies are currently available. Based on the existing literature and field observations from the French forest health service, we firstly identified the prominent \{BWB\} species implicated in oak declines in Europe. Secondly we performed a state of the art on ...


Impact of drought and Hypoxylon mediterraneum on oak decline in the Mediterranean region

Annales des Sciences Forestières, Vol. 53, No. 2-3. (1996), pp. 753-760,


An association was evidenced in the last decade among changes in species composition, changes in rainfall distribution and incidence of stress-induced pathogens, such as Hypoxylon mediterraneum, in old oak coppices in central and southern Italy. Quercus cerris and Q frainetto were more affected by decline than Q pubescens following periods of summer drought. The role of H mediterraneum on drought-susceptible species was relevant by increasing their mortality. According to our results, changes in rainfall distribution and secondary biotic stress factors, such ...


Evolutionary ecology of mast-seeding in temperate and tropical oaks (Quercus spp.)

Plant Ecology, Vol. 107-108, No. 1. (1 June 1993), pp. 133-147,


Mast-seeding is the synchronous production of large seed crops within a population or community of species every two or more years. This paper addresses three non-mutually exclusive hypotheses explaining the evolution of mast-seeding in temperate tree species, especially the genus Quercus: (1) mast-seeding is a consequence of mast-flowering which evolves to increased pollination efficiency in mast-flowering years; (2) mast-seeding has evolved as an anti-predator adaptation by which large seed crops during mast years satiate the seed predators and allow survival of ...

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