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  • 1
    Online Resource
    Online Resource
    Universitatea Stefan cel Mare din Suceava ; 2018
    In:  Bucovina Forestiera Vol. 18, No. 2 ( 2018-12-30), p. 230-
    In: Bucovina Forestiera, Universitatea Stefan cel Mare din Suceava, Vol. 18, No. 2 ( 2018-12-30), p. 230-
    Type of Medium: Online Resource
    ISSN: 1582-3725 , 1582-0769
    Language: Unknown
    Publisher: Universitatea Stefan cel Mare din Suceava
    Publication Date: 2018
    detail.hit.zdb_id: 2712018-1
    SSG: 23
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  • 2
    Online Resource
    Online Resource
    MDPI AG ; 2022
    In:  Forests Vol. 13, No. 7 ( 2022-07-11), p. 1089-
    In: Forests, MDPI AG, Vol. 13, No. 7 ( 2022-07-11), p. 1089-
    Abstract: In Romania, the productivity of the new clones of hybrid poplar has not been tested in recent years. This case study aims to fill a gap on the productivity map of the new poplar clones, estimating, by biomass measurements, the productivity of two clones (AF2 and AF8) with different planting densities (from 1333 trees·ha−1 to 2667 trees·ha−1). The short-rotation woody crops (SRWCs) were established in homogeneous conditions, in North-East (NE) Romania and the northern part of Suceava County. Using a specifically developed method, biomass production was estimated using destructive methods, with 190 poplar trees being harvested, measured, and weighed to compute the accumulated biomass for each growing season The biomass production of the crops with 1667 trees·ha−1 planting density highlighted significant differences in productivity in favour of the AF2 clone after five growing seasons. The crops shared similar annual growth patterns, and the stem biomass represents approximately 73–80% of the total biomass of the trees. The second research question concerning planting density influence on productivity showed fluctuations of biomass accumulations at different planting densities (1333 trees ha−1, 1667 trees ha−1 and 2667 trees ha−1) for a 5-year rotation. The outcomes emphasized the influence of the annual weather conditions—primarily the rainfall in May–June—on poplar growth, showing that productivity also depends on the genotype, density and biotic disturbances.
    Type of Medium: Online Resource
    ISSN: 1999-4907
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2527081-3
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  • 3
    In: Global Change Biology, Wiley, Vol. 28, No. 9 ( 2022-05), p. 3066-3082
    Abstract: Aún existen importantes vacíos en la comprensión de la respuesta reproductiva de las plantas al cambio medioambiental, en parte, porque su monitoreo en especies de plantas longevas requiere una observación directa durante muchos años, y estos conjuntos de datos rara vez han estado disponibles. Aquí presentamos a MASTREE +, una base de datos que recopila series de tiempo de la reproducción de las plantas de todo el planeta, poniendo a disposición estos datos de libre acceso para la comunidad científica. MASTREE + incluye 73.828 puntos de observación de la reproducción anual georreferenciados (ej. conteos de semillas y frutos) en poblaciones de plantas perennes en todo el mundo. Estas observaciones consisten en 5971 series temporales a nivel de población provenientes de 974 especies en 66 países. La mediana de la duración de las series de tiempo es de 10 años (media = 12.4 años) y el conjunto de datos incluye 1.122 series de al menos dos décadas (≥20 años de observaciones). Para un subconjunto de especies bien estudiadas, MASTREE +incluye un amplio conjunto de series temporales replicadas en gradientes geográficos y climáticos. Describimos el conjunto de datos de acceso abierto disponible como un archivo.csv y presentamos una aplicación web asociada para la exploración de datos. MASTREE+ proporcionará la base para mejorar la comprensión sobre la respuesta reproductiva de plantas longevas al cambio medioambiental. Además, MASTREE+ facilitará los avances en la investigación de la ecología y la evolución de las estrategias reproductivas en plantas perennes y el papel de la reproducción vegetal como determinante de la dinámica de ecosistemas.
    Type of Medium: Online Resource
    ISSN: 1354-1013 , 1365-2486
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2020313-5
    SSG: 12
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  • 4
    In: Ecological Modelling, Elsevier BV, Vol. 376 ( 2018-05), p. 40-53
    Type of Medium: Online Resource
    ISSN: 0304-3800
    RVK:
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2018
    detail.hit.zdb_id: 191971-4
    detail.hit.zdb_id: 2000879-X
    SSG: 12
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  • 5
    Online Resource
    Online Resource
    Marin Dracea National Research-Development Institute in Forestry ; 2015
    In:  Annals of Forest Research Vol. 58, No. 1 ( 2015-04-22), p. 1-
    In: Annals of Forest Research, Marin Dracea National Research-Development Institute in Forestry, Vol. 58, No. 1 ( 2015-04-22), p. 1-
    Type of Medium: Online Resource
    ISSN: 2065-2445 , 1844-8135
    Language: Unknown
    Publisher: Marin Dracea National Research-Development Institute in Forestry
    Publication Date: 2015
    detail.hit.zdb_id: 2498725-6
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  • 6
    In: Plants, MDPI AG, Vol. 11, No. 23 ( 2022-11-30), p. 3310-
    Abstract: In the context of forecasted climate change scenarios, the growth of forest tree species at their distribution margin is crucial to adapt current forest management strategies. Analyses of beech (Fagus sylvatica L.) growth have shown high plasticity, but easternmost beech populations have been rarely studied. To describe the response of the marginal beech population to the climate in the far east sites of its distribution, we first compiled new tree ring width chronologies. Then we analyzed climate–growth relationships for three marginal beech populations in the Republic of Moldova. We observed a relatively high growth rate in the marginal populations compared to core distribution sites. Our analyses further revealed a distinct and significant response of beech growth to all climatic variables, assessing for the first time the relationship between growth and vapor pressure deficit (VPD) which described how plant growth responds to drought. These results highlight that accumulated water deficit is an essential limiting factor of beech growth in this region. In conclusion, beech growth in the easternmost marginal population is drought-limited, and the sensitivity to VPD will need to be considered in future studies to update the forest management of other economic and ecologically important species.
    Type of Medium: Online Resource
    ISSN: 2223-7747
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2704341-1
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  • 7
    Online Resource
    Online Resource
    Universitatea Stefan cel Mare din Suceava ; 2016
    In:  Bucovina Forestiera Vol. 16, No. 2 ( 2016-12-31), p. 175-
    In: Bucovina Forestiera, Universitatea Stefan cel Mare din Suceava, Vol. 16, No. 2 ( 2016-12-31), p. 175-
    Type of Medium: Online Resource
    ISSN: 1582-3725 , 1582-0769
    Language: Unknown
    Publisher: Universitatea Stefan cel Mare din Suceava
    Publication Date: 2016
    detail.hit.zdb_id: 2712018-1
    SSG: 23
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  • 8
    Online Resource
    Online Resource
    Universitatea Stefan cel Mare din Suceava ; 2021
    In:  Bucovina Forestiera Vol. 21, No. 2 ( 2021-12-31), p. 235-236
    In: Bucovina Forestiera, Universitatea Stefan cel Mare din Suceava, Vol. 21, No. 2 ( 2021-12-31), p. 235-236
    Abstract: În 25 iunie 2021, Facultatea de Silvicultură a sărbătorit un astfel de profesor extraordinar. Universitatea „Ștefan cel Mare” din Suceava i-a acordat titlul de PROFESOR EMERITUS domnului Profesor universitar doctor inginer Radu Leontie Cenușă.Motivarea acestei distincții este fondată pe mai multe fapte:(i) rolul de creator de școală forestieră pe care Profesorul l-a avut. Și aici mă refer nu doar la rolul pe care l-a avut alături de domnul Radu Ichim, Nicolae Geambașu sau Ion Barbu în susținerea ideii de reînființare a Facultății de Silvicultură în Bucovina ci și la rolul în consolidarea colectivului și instruirea promoțiilor de silvicultori în spiritul respectului față de pădure;(ii) generoasa carieră didactică și științifică a domniei sale, activitatea sa de cercetare cuprinzând un număr impresionant de proiecte, cărți, articole sau comunicări recunoscute și apreciate de comunitatea științifică forestieră.
    Type of Medium: Online Resource
    ISSN: 1582-3725 , 1582-0769
    Language: Unknown
    Publisher: Universitatea Stefan cel Mare din Suceava
    Publication Date: 2021
    detail.hit.zdb_id: 2712018-1
    SSG: 23
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  • 9
    Online Resource
    Online Resource
    MDPI AG ; 2023
    In:  Forests Vol. 14, No. 6 ( 2023-05-28), p. 1118-
    In: Forests, MDPI AG, Vol. 14, No. 6 ( 2023-05-28), p. 1118-
    Abstract: Ecological patterns of species distribution can reveal essential information on the spatial and functional relationship between species or species and their environment. Various approaches can be used to assess species associations, and our study aimed to compare three methods at different scales: the co-occurrence indices for binary presence–absence data, principal component analysis (PCA) on species abundance and point process analysis. Our goal was to gain a deeper understanding of the species’ co-occurrence patterns and notice if the three methods capture roughly the same spatial distribution trends. Our observational study of the analysed sapling community displayed several positive relationships between species (e.g., the association between ash and linden). However, many relationships were inconsistent across different scales. Furthermore, attraction between species was more prevalent than repulsion. Overall, there is a positive association trend, with more relationships being significantly positive across all scales. This trend is consistent with other recent studies of tree–species interaction. Nonetheless, the results suggest that the scale significantly influences spatial patterns of associations. Positive associations tend to be more prevalent on larger scales, while negative associations are more commonly found on smaller scales, regardless of the analysis method used. While the PCA results are less consistent, the point process analysis allowed us to detect more refined patterns of species associations based on the distance of their interaction. In addition, the binary presence–absence analysis provided solid results, with a coarser spatial perspective but with significantly less sampling effort.
    Type of Medium: Online Resource
    ISSN: 1999-4907
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2527081-3
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  • 10
    In: Ecology, Wiley, Vol. 98, No. 5 ( 2017-05), p. 1473-1473
    Abstract: Tree masting is one of the most intensively studied ecological processes. It affects nutrient fluxes of trees, regeneration dynamics in forests, animal population densities, and ultimately influences ecosystem services. Despite a large volume of research focused on masting, its evolutionary ecology, spatial and temporal variability, and environmental drivers are still matter of debate. Understanding the proximate and ultimate causes of masting at broad spatial and temporal scales will enable us to predict tree reproductive strategies and their response to changing environment. Here we provide broad spatial (distribution range‐wide) and temporal (century) masting data for the two main masting tree species in Europe, European beech ( Fagus sylvatica L.) and Norway spruce ( Picea abies (L.) H. Karst.). We collected masting data from a total of 359 sources through an extensive literature review and from unpublished surveys. The data set has a total of 1,747 series and 18,348 yearly observations from 28 countries and covering a time span of years 1677–2016 and 1791–2016 for beech and spruce, respectively. For each record, the following information is available: identification code; species; year of observation; proxy of masting (flower, pollen, fruit, seed, dendrochronological reconstructions); statistical data type (ordinal, continuous); data value; unit of measurement (only in case of continuous data); geographical location (country, Nomenclature of Units for Territorial Statistics NUTS ‐1 level, municipality, coordinates); first and last record year and related length; type of data source (field survey, peer reviewed scientific literature, gray literature, personal observation); source identification code; date when data were added to the database; comments. To provide a ready‐to‐use masting index we harmonized ordinal data into five classes. Furthermore, we computed an additional field where continuous series with length 〉 4 yr where converted into a five classes ordinal index. To our knowledge, this is the most comprehensive published database on species‐specific masting behavior. It is useful to study spatial and temporal patterns of masting and its proximate and ultimate causes, to refine studies based on tree‐ring chronologies, to understand dynamics of animal species and pests vectored by these animals affecting human health, and it may serve as calibration–validation data for dynamic forest models.
    Type of Medium: Online Resource
    ISSN: 0012-9658 , 1939-9170
    URL: Issue
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2017
    detail.hit.zdb_id: 1797-8
    detail.hit.zdb_id: 2010140-5
    SSG: 12
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