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Ajouter le résultat dans votre panierOribatid mites (Acari, Oribatida) - bioindicators of forest soils pollution with heavy metals and fluorine / Otilia Ivan in Annals of forest research, vol 52 n° 1 (January 2009)
Titre : Oribatid mites (Acari, Oribatida) - bioindicators of forest soils pollution with heavy metals and fluorine Type de document : Article/Communication Auteurs : Otilia Ivan, Auteur ; Niculai Alexandru Vasiliu, Auteur Année de publication : 2009 Article en page(s) : p. 11-18 Note générale : Bibliogr. Langues : Anglais (eng) Descripteur : [Termes IGN] Arthropoda
[Termes IGN] indicateur biologique
[Termes IGN] pollution des sols
[Termes IGN] sol forestierRésumé : (Auteur) "The present study analyzes the effects of pollution with heavy metals and fluorine on the oribatid mite communities populating the forest soils, on the basis of the researches carried on in three oak-type forests, situated at different distances from the Phosphoric Fertilizers Plant of Valea Cãlugãreascã (the Prahova county, Romania). In the forest strongly affected by pollution, the heavy metals concentrations were 2-9 times higher than the maximum allowable limits (MAL). In the perimeter with medium level of pollution, the content of Pb, Cr and Ni were over the MAL, while Co and Cd concentrations are closed to these limits. Two years after closing of this industrial unit, a decrease of soil loading with heavy metals was to be found, mostly in the surface sub-horizon. In the control perimeter, the oribatids constitute a complex community with a large specific diversity. The characteristic species for this zone (South-Eastern of Romania) are frequent and/or abundant, having a high ecological significance. In the affected forests, the oribatid mites' densities are 6-476 times lower than in the control perimeter. Their communities are constituted of a small number of tolerant species (euryplastic, unspecific fauna), being characterized by a low specific diversity and a marked structural instability. The analysis of the oribatid species distribution in the control and polluted ecosystems has evidenced that certain elements can be considered bioindicators for this type of pollution. Our researches carried out two years after the production stopping, have not evidenced a favourable evolution of the oribatid mites communities. It is probably that the recovery of the decomposers' trophic chains requires a longer time." Numéro de notice : IFN_5758 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/02_Ivan.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73485
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 11-18[article]
Titre : Soil and saproxylic species (Coleoptera, Collembola, Araneae) in primeval forests from the Northern part of South-Easthern Carpathians Type de document : Article/Communication Auteurs : Eugen Nitu, Auteur ; Nicolai Olenici, Auteur ; Ionut Popa, Auteur ; Augustin Nae, Auteur ; Iovu-Adrian Biris, Auteur Année de publication : 2009 Article en page(s) : p. 27-53 Note générale : Bibliogr. Annexes. Langues : Anglais (eng) Descripteur : [Termes IGN] Araneae
[Termes IGN] Coleoptera (ordre)
[Termes IGN] Collembola
[Termes IGN] faune
[Termes IGN] forêt tropicale
[Termes IGN] microbiologie du sol
[Termes IGN] RoumanieRésumé : (Auteur) "In 2006-2007 we carried out faunal investigations in the vernal, estival and autumnal seasons in the scientific reserve "Codrul Secular Giumalău" using quantitative sampling methods. We identified 189 species of Coleoptera, 70 of Collembola and 20 of Araneae. Of these, 11 phytophagous, 18 myceto/xylo-mycetophagous, 9 mixophagous, 18 xylo- and cambio-xylemophagous, 38 saproxylophagous, 125 (55 Coleoptera, 70 Collembola) detritivorous (sapro-, copro- and necrophagous), 60 (40 Coleoptera, 20 Aranea) predators/parasitoids. Hymenaphorura polonica Pomorski, 1990 (Collembola), and Leiodes rhaeticus Erichson, 1845 (Coleoptera, Leiodidae), are recorded for the first time in the Romanian fauna. The rare species and characteristic species for the old primeval spruce forests are analysed for each studied taxonomic group. The species richness and faunal diversity from the Giumalău primeval spruce forest are compared with those of other very well preserved forests from the Carpathians scientific reserves (Codrul Secular Slătioara, Pietrosul Rodnei). The species abundances were used to compute the similarity indexes between the sampled sectors of forest and to perform Cluster Analysis. We observed that the dead wood in the 2nd-6th phases of decomposition has a great influence not only on the saproxylic species but also on the soil fauna like ground beetles (Carabidae) that use the logs as ecologic microrefuges (winter refugees or diurnal refugees). The structure of the soil fauna is influenced by wood extraction from the forest ecosystem or by natural perturbations, this consisting in the appearance of opportunistic species as Orchesella pontica (Collembola) and in decreasing of species richness of Carabidae (Coleoptera)." Numéro de notice : IFN_5760 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/04_Nitu.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73487
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 27-53[article]Documents numériques
en open access
Soil and saproxylic species...Adobe Acrobat PDF
Titre : Diversity and primary productivity of hill beech forests from Doftana Valley (Romanian Subcarpathians) Type de document : Article/Communication Auteurs : Mihaela Pauca-Comanescu, Auteur ; Mihaela Pauca-Comanescu, Auteur ; Marinela Onete, Auteur ; Vasile Sanda, Auteur ; Ioana Vicol, Auteur ; Ioana Onut, Auteur ; Daniela Mogaldea, Auteur ; Sorin Stefanut, Auteur Année de publication : 2009 Article en page(s) : p. 63-76 Note générale : Bibliogr. Langues : Anglais (eng) Descripteur : [Termes IGN] biodiversité
[Termes IGN] biomasse aérienne
[Termes IGN] Fagus sylvatica
[Termes IGN] productivité
[Termes IGN] Roumanie
[Vedettes matières IGN] Economie forestièreRésumé : (Auteur) "The hill beech forests cover most of the woody area in the Doftana Valley. The present study refers, for the first time, to two beech forests typical to this belt, which belong to the phytocoenological associations Epipactieto-Fagetum (Resmeriţă, 1972), in the Lunca Mare area, and Hieracio rotundati-Fagetum (Vida 1983, Täuber 1987) in the Sotrile area, from floristic, structural, biomass and necromass accumulation point of view, within the framework of the vertical structure of biocoenosis. The limestone substratum, occasionally with small outcrops in the first beech forest, differs chiefly through the pH levels (6.34-5.67) from the siliceous substratum (pH 5.11-4.36) in the second beech forest. The layer of trees is dominated by Fagus sylvatica in both forests; this species is associated with Cerasus avium (4.5%), Acer pseudoplatanus (2%) and Sorbus torminalis (2%) in the first beech forest, and is monodominant in the second. Although the forest underwent selective cuts, more intense in the Lunca Mare area, the aboveground ligneous biomass reaches nowadays 222 t/ha in the Lunca Mare area compared to only 163 t/ha in the Sotrile area; the average height is 28.8ą2.49 m and 23.7ą1.12 m, respectively, and the diameter is 33.30ą7.9 cm and 31.60ą6.28 cm, respectively. The species of macrofungi, not very numerous during the study because of scarce precipitations (6 and 7 species, respectively), are predominant on the rhytidoma trees in the beech forest rooted on the limestone ground; in the Sotrile beech forest they are joined by mycorrhizal and parasite species. The layer of shrub is underdeveloped. The herbaceous layer is discontinuous, and includes, along herbs, small plants and saplings belonging to the ligneous species and to liana Hedera helix. The maximal value of the aboveground biomass of the layer is 317 kg/ha DM in the Lunca Mare area and 235 kg /ha DM in the Sotrile area. Bryophyta is present in large quantities, especially in the Sotrile area, where by May it represents up to 20% of the inferior layer's biomass; on the limestone ground they do not exceed 0.5%. The most frequent are on the soil surface: Polytrichum formosum, Pogonatum nanum, Hypnum cupressiforme, Tortella tortuosa at Sotrile and, respectively Metzgeria furcata var. ulvula, Leskea nervosa , Ctenidium molluscum at Lunca Mare. In the Lunca Mare area, the most relevant herbaceous species in the structure of the biomass are Viola reichenbachiana, Festuca drymeja, Sanicula europaea and Campanula trachelium; in spring there are also Erytronium dens-canis and Lathyrus vernus. In the Sotrile area these are: Luzula luzuloides, Carex digitata, Calamagrostis arundinacea and Hieracium transsylvanicum, in both spring and autumn. Hedera helix, present especially at the surface, is the most frequent and best represented in terms of biomass in both beech forests, and in particular in the Lunca Mare site. The species characteristic to the phytocoenological association and to the alliances where these beech forests are included are representative through their biomass for the Hieracio rotundati-Fagetum association, while the orchids species characteristic to associations present on the limestone ground, although very diverse and with a great number of individuals for this taxonomic group, are not representative, neither as frequency nor as biomass or density, compared to other herbal species with a larger coenotic value, which are included in the Epipactieto-Fagetum association. The necromass accumulated in the area analyzed decays slowly, varying greatly with surface and time. It averages 4492 kg/ha in the Lunca Mare area and 4134 kg/ha in the Sotrile area. The necromass is made mostly of fallen leaves, and, at least in the Lunca Mare area, the July values are amplified by vernal herb flora." Numéro de notice : IFN_5773 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/06_Pauca.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73496
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 63-76[article]Documents numériques
en open access
Diversity and primary productivity of hill beech forests...Adobe Acrobat PDF
Titre : Biochemical peculiarity of in vitro morphogenesis under conservation strategy of Ruscus aculeatus L. Type de document : Article/Communication Auteurs : Cristian Banciu, Auteur ; Monica Elena Mitoi, Auteur ; Aurelia Brezeanu, Auteur Année de publication : 2009 Article en page(s) : p. 109-115 Note générale : Bibliogr. Langues : Anglais (eng) Descripteur : [Termes IGN] conservation de la flore
[Termes IGN] microbouturage
[Termes IGN] morphogenèse
[Termes IGN] Ruscus aculeatusRésumé : (Auteur) "The present study is part of the actual concerns in biodiversity conservation of endangered angyosperm species from the Comana Natural Park. Ruscus aculeatus L. species is protected both at national and European level (trough Habitats Directive of EU and Bern Convention). The aspects of in vitro morphogenesis through all the stages from inoculation, multiplication to rooting and acclimatization have been studied. In order to long term conservation and multiplication or to exploit somaclonal variation induced by in vitro technique is required the identification of some biochemical or molecular markers for fast evaluation of regenerants. In this respect, genetic stability or variability of Ruscus aculeatus plants collected from three populations and regenerants obtained in vitro culture was estimated by electrophoretical methods. Therefore, zymograms of different enzymes as esterase, acid and alkaline phosphatase, glutamate-oxaloacetate transferase, malate dehydrogenase and peroxidase were analyzed. The expression of esterases, phosphatases, malate dehydrogenases displayed changes in correlation with growth condition, while the peroxidases pattern was more stabile in natural population as well as in vitro regenerated plantlet." Numéro de notice : IFN_5799 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/10_Banciu.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73511
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 109-115[article]Documents numériques
en open access
Biochemical peculiarity of in vitro morphogenesis...Adobe Acrobat PDF
Titre : The establishment of an in vitro gene bank in Dianthus spiculifolius Schur and D. glacialis ssp. gelidus (Schott Nym. et Kotschy) Tutin: I. The initiation of a tissue collection and the characterization of the cultures in minimal growth conditions Type de document : Article/Communication Auteurs : Mihaela Holobiuc, Auteur ; Rodica Blindu, Auteur ; Monica Mitoi, Auteur ; Florenta Helepciuc, Auteur ; Victoria Cristea, Auteur Année de publication : 2009 Article en page(s) : pp 117 - 128 Note générale : Bibliogr. Langues : Anglais (eng) Descripteur : [Termes IGN] croissance végétale
[Termes IGN] Dianthus glacialis
[Termes IGN] Dianthus spiculifolius
[Termes IGN] diversité génétique
[Termes IGN] microbouturage
[Termes IGN] politique de conservation (biodiversité)
[Vedettes matières IGN] Végétation et changement climatiqueRésumé : (Auteur) In the last decades, the plants have to cope with the warming of the climate. As a consequence of this process more than half of the plant species could become vulnerable or threatened until 2080. Romania has a high plant diversity, with endemic and endangered plant species, the measures of biodiversity conservation being necessary. The integrated approach of biodiversity conservation involves both in situ and ex situ strategies. Among ex situ methods of conservation, besides the traditional ones (including field and botanic collection and seed banks), in vitro tissues techniques offer a viable alternative. The germplasm collections can efficiently preserve the species (of economic, scientific and conservative importance), in the same time being a source of plant material for international exchanges and for reintroduction in the native habitats.The "in vitro gene banking" term refers to in vitro tissues cultures from many accessions of a target species and involves the collection of plant material from field or from native habitats, the elaboration of sterilization, micropropagation and maintaining protocols. These collections have to be maintained in optimal conditions, morphologically and genetically characterized. The aim of our work was to characterize the response of the plant material to the minimal in vitro growth protocol for medium-term cultures achievement as a prerequisite condition for an active gene bank establishment in two rare Caryophyllaceae taxa: Dianthus spiculifolius and D. glacialis ssp. gelidus. Among different factors previously tested for medium-term preservation in Dianthus genus, mannitol proved to be more efficient for minimal cultures achievement. In vitro, the cultures were evaluated concerning their growth, regenerability and enzyme activity (POX, SOD, CAT) as a response to the preservation conditions in the incipient phase of the initiation of the in vitro collection. The two species considered in this study showed a good in vitro behavior when using the mannitol as growth retardant. Numéro de notice : A2009-453 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/11_Holobiuc.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73512
in Annals of forest research > vol 52 n° 1 (January 2009) . - pp 117 - 128[article]
Titre : Biotechnology for in vitro growing of edible and medicinal mushrooms on wood wastes Type de document : Article/Communication Auteurs : Marian Petre, Auteur ; Alexandru Teodorescu, Auteur Année de publication : 2009 Article en page(s) : p. 129-135 Note générale : Bibliogr. Langues : Anglais (eng) Descripteur : [Termes IGN] biotechnologie
[Termes IGN] déchet organique
[Termes IGN] FungiRésumé : (Auteur) "The aim of this work was focused on finding out the best way to convert the wood wastes into useful food supplements, such as mushroom fruit bodies, by using them as growing sources for the edible and medicinal mushrooms. According to this purpose, three fungal species from Basidiomycetes, namely Ganoderma lucidum (Curt.:Fr.) P. Karst, Lentinus edodes (Berkeley) Pegler and Pleurotus ostreatus (Jacquin ex Fries) Kummer were tested to determine their biological potential to grow on substrates made of wood wastes (sawdusts as well as shavings) which could be used in this way as main ingredients for preparation of natural culture composts. The experiments were achieved by in vitro growing of all these fungal species in special rooms, where the main culture parameters were kept at optimal levels in order to get the highest production of mushroom fruit bodies. The effects of culture compost composition (carbon, nitrogen and mineral sources) as well as other physical and chemical factors (such as: temperature, inoculum amount, pH level and incubation time, etc.) on mycelial net formation and especially on fruit body induction, were investigated. From all these fungal species tested in our experiments, P. ostreatus was registered as the fastest mushroom culture, then L. edodes and finally, G. lucidum as the longest mushroom culture. During the experiments, different logs of the same species were used as control samples for each culture compost variants. Applying such biotechnology, the environmental problems generated by the plant wastes accumulation in wood industry could be solved only by using biological means for their valorising, simultaneously with food supplements producing having high nutritive values as well as healing effects by increasing the consumers` health." Numéro de notice : IFN_5801 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/12_Petre.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73513
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 129-135[article]Documents numériques
en open access
Biotechnology for in vitro growing...Adobe Acrobat PDF
Titre : Influence of microstructured carbon materials on Sequoia sempervirens (D. Don.) Endl. in vitro culture Type de document : Article/Communication Auteurs : Raluca Stoiculescu, Auteur ; Gina Cogalniceanu, Auteur ; Aurelia Brezeanu, Auteur ; Gabriela Hristea, Auteur Année de publication : 2009 Article en page(s) : p. 137-141 Note générale : Bibliogr. Langues : Anglais (eng) Descripteur : [Termes IGN] carbone
[Termes IGN] microbouturage
[Termes IGN] Sequoia sempervirensRésumé : (Auteur) "The present experimental research has been mainly focused on Sequoia sempervirens (D. Don.) Endl. as woody plant model system, for testing the influence of some microstructured carbon materials (CCM) comparing with the activated charcoal action, on the in vitro growth. The work hypothesis was that CCM can induce effects on the plant culture, similar to those induced by activated charcoal, due to their high absorption capacity. The influence of two types CCM and activated charcoal introduced in the medium culture was evaluated on the fresh weight and on the length of the in vitro regenerants, after 30 and 60 days of cultivation. Our data revealed that the CCM is not toxic and does not inhibit plant growth. We also remarked that S. sempervirens (D. Don.) Endl. was more reactive to the activated charcoal into the nutritive medium than the CCM compounds. The use of these new microstructured compounds is an important step both in the study of materials science and in the field of plant biotechnologies." Numéro de notice : IFN_5802 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/13_Stoiculescu.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73514
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 137-141[article]Documents numériques
en open access
Influence of microstructured carbon materials on Sequoia sempervirens...Adobe Acrobat PDF
Titre : Basic features of a group selection system modification aimed to sustain regular-uneven-aged stand structure Type de document : Article/Communication Auteurs : Roman Efremov, Auteur Année de publication : 2009 Article en page(s) : p. 143-150 Note générale : Bibliogr. Langues : Anglais (eng) Descripteur : [Termes IGN] Fagus sylvatica
[Termes IGN] forêt inéquienne
[Termes IGN] structure d'un peuplement forestier
[Vedettes matières IGN] BotaniqueRésumé : (Auteur) "Proposed modification of group selection system is aimed to successfully combine its elements with biological peculiarities (such as sympodial growth, distinct heliotropism and crown growth plasticity, heavy seeds and difficult dissemination, etc.) of shade-intolerant and mid-tolerant tree species, stands of which may be managed under the same system. Principles, on which the modification is based, are: (i) application of well founded extended rotations in order to increase the proportion of tree groups above 90-100 years age in the stand, where upon the height increment and crown side spread by most of the main tree species in Bulgary drop to considerably lower level, and (ii) optimum systematic spatial positioning of openings in the stand canopy (and tree groups respectively) over the stand area, so that new gaps created by consecutive selection cuttings adjoin to a minimum number of middle aged (40-80 y. age) tree groups. Such clumps of vigorous trees with high growth rates, heliotropism and plasticity carry certain risks of spoiling the target regular-unevenaged stand structure. Factors of significance are discussed by determining the rotation age, size of gaps opened in the stand canopy, selection cutting cycle, a regularuneven- aged stand structure design and the minimum area that enables realisation of full selection system cycle. Definitions and determination of selection system elements in their mutual connections are presented in consecutive steps when designing a particular application of group selection system for exemplary pure stand of common beech (Fagus sylvatica L.). By the proposed group selection system modification the amount of combinations of various factors having impact upon processes in the tree groups are diminished compared to that by random spatial arrangement of the gaps over the stand area. Silvicultural activities aimed to maintain a stable unevenaged stand structures are thus getting more predictable, easier to schedule and efficient." Numéro de notice : IFN_5803 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/14_Efremov.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73515
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 143-150[article]Documents numériques
en open access
Basic features of a group selection system modification...Adobe Acrobat PDF
Titre : Using pixel and object based IKONOS image analysis for studying decay in silver fir stands Type de document : Article/Communication Auteurs : Ionut Barnoaiea, Auteur ; Ionut Barnoaiea, Auteur ; Ovidiu Iacobescu, Auteur Année de publication : 2009 Article en page(s) : p. 151-162 Note générale : Bibliogr. Annexe Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Abies (genre)
[Termes IGN] analyse d'image orientée objet
[Termes IGN] image Ikonos
[Termes IGN] santé des forêtsRésumé : (Auteur) "The problem of old silver fir stands decay has appeared in the last decades of the last century with symptoms such as defoliation, wood decay and parasites attacks. The problems in monitoring this phenomenon is that the defoliation and mistletoe attack appear on the crown top, triggering the coronation process - tree develop branches on their lower stem part in order to resist to the defoliation. This reaction makes the attack difficult to notice on aerial or satellite images, due to the reflection of light on the lower branches. The objective of the article is to find a research methodology for identifying and even mapping the mistletoe attack phenomenon at a tree or stand level. For a tree-level analysis, a comparison between the data obtained in a 1 ha sample plot and the data extracted from an IKONOS satellite image has been used. The simple spectral response is less correlated at tree level with the defoliation and mistletoe attacks. We found a very significant correlation in the infrared channel but with low correlation coefficients. Better results have been obtained in a stand-level analysis. In order to improve the separability, the methodology for extracting the remote sensing data did not resume only to the mean spectral response, but we also performed a variability and texture analysis. The obtained correlation coefficients were around 0.7, very significant for the data used in the research. The results obtained with the texture analysis are also related to the biometric characteristics of the stands, mistletoe attacks occurring in stands with a low canopy closure index and is usually accompanied by distorted crowns. The model of forest health analysis should also be tested in similar conditions in order to validate and apply on a large scale inventory." Numéro de notice : IFN_5835 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : sans/sans En ligne : http://www.editurasilvica.ro/afr/52/1/15_Barnoaiea.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73536
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 151-162[article]Documents numériques
en open access
Using pixel and object based IKONOS image analysis...Adobe Acrobat PDF
Titre : Cluster analysis in primary roundwood production of 25 countries of European Union Type de document : Article/Communication Auteurs : Panagiotis P. Koulelis, Auteur Année de publication : 2009 Article en page(s) : p. 163-168 Note générale : Bibliogr Langues : Anglais (eng) Descripteur : [Termes IGN] développement durable
[Termes IGN] grume
[Termes IGN] industrie forestière
[Termes IGN] produit du bois
[Termes IGN] Union EuropéenneRésumé : (Auteur) "Main objective of this research is the effects of the political and economic enlargement of Europe in the market of wood products, especially for primary production of conifers and broadleaves round timber. The research consists in the application of the hierarchical cluster analysis to classify the 25 member countries, based on the roundwood coniferous and non-coniferous production during the period 1992-2002. Valuable conclusions came out regarding the market changes due to the participation of the new member states in E.U., which finally strengthen the wood and wood products European trade. Many of these new member states are covered by extended forested areas and they contribute significantly to both coniferous and non coniferous round wood European production. The entrance of the new ten member states, combined with the sustainable management of the forest resources, contributes to strengthen the EU timber production, exploiting internal productions but also to promote sustainable forest management and conservation for every country." Numéro de notice : IFN_5836 Affiliation des auteurs : non IGN Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/16_Koulelis.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73537
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 163-168[article]Documents numériques
en open access
Cluster analysis in primary roundwood production ...Adobe Acrobat PDF
Titre : Improving the ecologically sustainable forest management behaviour - qualitative frame analysis for argumentation Type de document : Article/Communication Auteurs : Kati Vierikko, Auteur ; Johanna Kohl, Auteur Année de publication : 2009 Article en page(s) : p. 169-182 Note générale : Bibliogr. Annexe Langues : Anglais (eng) Descripteur : [Termes IGN] Finlande Résumé : (Auteur) "Finnish forests are nowadays managed along principles of ecologically sustainable management. However, Finnish forests should be managed in both economic and ecologically sustainable ways. Policy tools are needed to guide the management behaviour of forest actors. Empirical studies on management behaviour have mostly concentrated on the objectives and values of private forest owners and forest workers separately. In this context, we were interested in studying forest actors' argumentation to identify which elements have a central impact on the interpretation of ecologically sustainable forest management. The study aimed at identifying the elements shared among different forest actor groups. Frame analyses were made to identify different argumentation groups. The primary data were semi-structured interviews with 20 forest actors. Four different argumentation frame types were constructed: information, work, experience and own position based. These were different in whether external experts or their own experiences were more trusted. Also, society and the individual role in maintaining the ecological sustainability of boreal forests were different among the groups. Based on the results, the most suitable policy instruments adapted to the frame types were suggested. The closer ecologically sustainable forest management is to the forest actor's daily life, the more profiled policy tools are needed to guide management behaviour to become more ecologically sound." Numéro de notice : IFN_5837 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/17_Vierikko.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73538
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 169-182[article]Documents numériques
en open access
Improving the ecologically sustainable forest management behaviour...Adobe Acrobat PDF
Titre : Stakeholder analysis for coppice forestry in Bulgaria Type de document : Article/Communication Auteurs : Ivaylo Velichkov, Auteur ; Tzvetan Zlatanov, Auteur ; Georgi Hinkov, Auteur Année de publication : 2009 Article en page(s) : p. 183-190 Note générale : Bibliogr Langues : Anglais (eng) Descripteur : [Termes IGN] Bulgarie
[Termes IGN] taillisRésumé : (Auteur) "The study analyzes the state of coppice forestry in Bulgaria during last 18 years. Stakeholders and their interests and preferences in coppice forests are explored and assessed. Forests restitution process in Bulgaria started in 1997 and has not been finished yet. Nevertheless, significant further changes of the current ownership distribution are not expected. By the end of 2007, the state was the biggest coppice forest owner/stakeholder in Bulgaria with 71.3% of all coppice forests being state property. The other two important stakeholders are the municipalities (14.0%) and private owners (12.0%). Currently, forest owners' number in Bulgaria exceeds 1 million, the average holding area being smaller than 1 ha. Only 150 individual plots are larger than 50 ha. The majority of private owners aim at taking maximum and immediate profit from their recently restituted forest properties. In most cases that reflects in clearcuts. Coppice forests management has been one of the problematic issues of Bulgarian forestry for decades. Despite of forest authorities significant efforts, the area of coppice forests in Bulgaria (1.78 million ha in 2007) remained unchanged for a period of 50 years. The official forest policy is still aimed at conversion of coppice forests into seed ones through different silvicultural methods. That policy is applied to almost all coppice forests regardless of their ownership." Numéro de notice : IFN_5838 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/18_Velichov.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73539
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 183-190[article]Documents numériques
en open access
Stakeholder analysis for coppice forestry in BulgariaAdobe Acrobat PDF
Titre : Bud burst and flowering phenology in a mixed oak forest from Eastern Romania Type de document : Article/Communication Auteurs : Ecaterina Nicoleta Chesnoiu, Auteur ; Nicolae Sofletea, Auteur ; Alexandru Lucian Curtu, Auteur ; Alin Toader, Auteur ; Raul Radu, Auteur ; Mihai Enescu, Auteur Année de publication : 2009 Article en page(s) : p. 199-206 Note générale : Bibliogr Langues : Anglais (eng) Descripteur : [Termes IGN] phénologie
[Termes IGN] Quercus (genre)
[Termes IGN] RoumanieRésumé : (Auteur) "Bud burst and flowering phenology have been observed in year 2008 in a natural white oak species complex situated in eastern Romania. A total of 300 mature individuals was mapped and identified based on leaf morphology. The community consists of four oak species: Quercus pedunculiflora, Q. robur, Q. pubescens and Q. petraea. A set of 28 individuals could not be unambiguously classified to one or another species. Data on bud burst showed a normal distribution and the differences among species were small. The "very late" flushing was recorded on 15th of April, three weeks later when compared to early flushing individuals. The time period between the bud burst and the complete development of leaves was nearly the same in all oak species, varying on average, between 18.4 and 20.6 days. The spatial distribution of phenological groups within the complex appears to be non-randomly, because in many parts of the study plot exist groups in which most of the trees belong to the same phenological category. Our results indicate an overlap in flowering time for all oak species which occur in the area. The data support the hypothesis that interspecific gene flow is possible between closely related oak species." Numéro de notice : IFN_5840 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/20_Chesnoiu.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73541
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 199-206[article]Documents numériques
en open access
Bud burst and flowering phenology in a mixed oak forest...Adobe Acrobat PDF
Titre : Dynamic of pollutants concentration in forest stands from Copsa Mica industrial area Type de document : Article/Communication Auteurs : Marian Ianculescu, Auteur ; Monica Ionescu, Auteur ; Dora Lucaci, Auteur ; Stefan Neagu, Auteur ; Mihaela Macarescu, Auteur Année de publication : 2009 Article en page(s) : p. 207-225 Langues : Anglais (eng) Descripteur : [Termes IGN] polluant
[Termes IGN] RoumanieRésumé : (Auteur) "The paper presents the dynamics of pollutants concentrations from nonferrous metallurgical plant in Copsa Mica, considered, between the years 1985 - 1989, as the most polluted area, even in the world, and detected as a large black spot on Landsat satellite imagery. Returning to investigations in this area, after 20-25 years, the pollution activity was changed after 1990, as a consequence of the reduction of industrial capacity, including the black smoke plant decommissioning, and the chimney built for exhaust pollutants over 350 m feet high, resulted some conclusions, necessary for decisions that have to be taken by environmental, forestry, health and agriculture authorities.The litter, soil and vegetation samples were colected from the same permanent sample plots between the years 2006-2009, as between the years 1985-1989, using the same methods, in order to be compared and analyzed. Therefore, returning to investigations in these permanent sample plots, were found the following conclusions: i) between the period 1985 - 1989, in all examined cases were revealed high pollutants concentrations, even exceeding the maximum allowable limit (MAL) consisting of suphur compounds in synergistic action with heavy metals (Cu, Pb, Cd, Zn, Mn, etc.), in vegetation and litter, which was directly correlated with noxious concentrations in the air, and concentrations below MAL in soil samples; ii) contrary, regarding the new pollution activity, it has been revealed low noxious concentration, in vegetation, litter and soil samples collected during the period between the years 2006-2008, which are directly related to their low concentration level in the air. Due to pollutants accumulation phenomenon over the years, high pollutants concentrations, ten times higher than MAL, were found in the superior soil layer. In such circumstances the best solution to protect the environment, population and livestock of the damaged area, for tens of thousands of hectares, is the closure of pollution sources, continuing ecological reconstruction works, already carried out on about 500 hectares of degraded land, unfortunately unsuitable for other uses-only for forestry fields, followed by vigorous action of soils decontamination, based on extensive interdisciplinary research." Numéro de notice : IFN_5841 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/21_Ianculescu.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73542
in Annals of forest research > vol 52 n° 1 (January 2009) . - p. 207-225[article]Documents numériques
en open access
Dynamic of pollutants concentration in forest stands...Adobe Acrobat PDF
