Temat: forest dynamics - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Struktura i dynamika lasu: teoria, metody, badania, kontrowersje
Struktura i dynamika lasu
Forest structure and dynamics: theory, research methods, controversies
Autorzy:: Szwagrzyk, Jerzy
Współwytwórcy:: Polska Akademia Nauk. Komitet Ekologii
Wydawca:: Państwowe Wydawnictwo Naukowe
Powiązania:: Wiadomości Ekologiczne
Opis:: Pages 355-373 ; 24 cm
Streszczenie w języku angielskim
Bibliografia na stronach 369-372
Abstract in English
Bibliographical references (pages 369-372)
Strony 355-373 ; 24 cm
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

na półce

Skocz do pozycji: 2.

Tytuł:: Kronika Naukowa
32. sympozjum IAVS na temat "Lasy świata: różnorodność i dynamika" (Uppsala, 20-26 VIII 1989 r.)
Autorzy:: Symonides, Ewa
Współwytwórcy:: Polska Akademia Nauk. Komitet Ekologii
Wydawca:: Państwowe Wydawnictwo Naukowe
Powiązania:: Wiadomości Ekologiczne
Opis:: Strony 149-152 ; 24 cm
Pages 149-152 ; 24 cm
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

Książka

na półce

Skocz do pozycji: 3.

Tytuł:: Can macrofungal biodiversity predict forest status and dynamics? A view from South European Mediterranean forests (Italy)
Autorzy:: Ambrosio, Elia
Feest, Alan
Tematy:: microfungi
biodiversity
forest stand
forest dynamics
terrestrial ecosystem
environmental impact
Mediterranean forest
Italy; Pokaż więcej
Wydawca:: Polskie Towarzystwo Botaniczne
Powiązania:: https://bibliotekanauki.pl/articles/11543409.pdf Link otwiera się w nowym oknie
Opis:: Fungi are among the most important organisms on earth, and they are essential components of terrestrial ecosystems. Their reproductive structures are strictly dependent and affected by environmental conditions, and community dynamics over time and space may be indirect indicators of the health status of forests. We combined macrofungal biodiversity indices in eight Mediterranean forests in Italy and surveyed 160 plots by standardized surveys, to evaluate the role of macrofungi as early predictors of change in the forest structure. The results show that indices of fungal diversity are influenced by geographic and floristic conditions, and inter- and intra-annual temperature and rainfall fluctuations affect the formation of fungal fruiting bodies. These findings suggest that environmental changes could be reflected by macrofungi, and conservation initiatives should consider the pivotal role that fungi play in biodiversity monitoring.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Zmiany składu gatunkowego i struktury drzewostanów w Roztoczańskim Parku Narodowym w okresie 2007-2017
Changes in the species composition and structure of forest stands in the Roztocze National Park in the years 2007-2017
Autorzy:: Łukaszewicz, J.
Zajączkowski, G.
Gil, W.
Tittenbrun, A.
Radliński, B.
Tematy:: forest dynamics
species composition
dbh distribution
permanent plot
strict protection; Pokaż więcej
Wydawca:: Polskie Towarzystwo Leśne
Powiązania:: https://bibliotekanauki.pl/articles/979113.pdf Link otwiera się w nowym oknie
Opis:: The aim of the study is to analyze changes in the species composition and in the diameter structure of the main forest−building species in the Roztocze National Park (central−eastern Poland). The research was carried out on 315 permanent monitoring plots. The range of collected data included: type of protection (strict and active protection), forest site type, tree species and their dbh (>7 cm over bark). Measurements and observations were made in 2007 and repeated in 2017. There was a significant reduction in the number of all tree species, except of beech Fagus sylvatica, regardless the protection status. Despite this, the basal area for the strict and active protection zone was similar both in 2007 (37.77 and 36.39 m2/ha, respectively) and 2017 (37.17 and 37.85 m2/ha, respectively). In the whole park, the number of large trees (mainly beeches) with high individual basal area increased, while the number of young generations of all species decreased. In the strict protection zone, the admixture species (decrease by 27.3%), as well as hornbeam Carpinus betulus (decrease by 22.8%), are not particularly competitive with beech. A similar tendency, although mitigated by active silvicultural treatments, was also observed in the active protection zone, in which admixture species have lost 24.8% while hornbeam 16.2%. In the strict protection area, there was a significant reduction in the number of fir Abies alba (by 14%). In the active protection zone fir increased its range and basal area, and maintains its population practically unchanged. There was also a decrease in the number of young generations, as evidenced by changes in the frequency in the 7−16 cm dbh class. The highest level of reduction in this class was found for pine Pinus sylvestris (by 64.8%), rare species (40.4%), hornbeam (31.2%), oak Quercus robur (26.6%), and spruce Picea abies (20.5%). Only beech increased the abundance in this class (by 1.4%) as well as in the next 17−26 cm class (even by 14.2%). The presented significant changes in the species composition and structure of basal area of the stands in the Roztocze National Park that occurred in the 10−year period, indicate a significant role of tending cuts in maintaining proper species composition, appropriate diameter structure of stands, their stability of natural richness and high level of diversity of forest ecosystems.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Do mixed oak-pine (Pino-Quercetum) forests in southern part of the Niepołomice Forest still exist?
Czy zbiorowisko dębowo-sosnowego boru mieszanego (Pino-Quercetum) dalej istnieje w południowej części Puszczy Niepołomickiej?
Autorzy:: Rakowska, Rita
Różański, Wojciech
Mazurkiewicz, Aleksandra
Mitka, Józef
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Stand dynamics in natural Scots pine forests as a model for adaptation management?
Autorzy:: Vacek, S.
Vacek, Z.
Bilek, L.
Remeš, J.
Hůnová, I.
Bulušek, D.
Král, J.
Brichta, J.
Tematy:: Pinus sylvestris
forest dynamics
stands structure
air pollution
climatic factors
Central Europe; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/2077666.pdf Link otwiera się w nowym oknie
Opis:: The paper deals with the dynamics of structure, diversity and growth of natural pine stands without direct human impact during the ten-year period in Nature Reserve (NR) Kostelecké bory, Czech Republic. The objective was to determine the main characteristics of the spontaneous development of Scots pine (Pinus sylvestris L.) forest stands in relation to their naturalness, ecological stability and adaptation to climate change and air pollution stress. Horizontal and vertical structure and species diversity of the tree layer, dead wood and natural regeneration of each permanent research plot (PRP) were evaluated (n = 6, 50 × 50 m /0.25 ha/, Northern Bohemia, 410–425 m above sea level). The average ring series of PRPs were correlated with the climatic data (precip- itation, temperature) according to individual years from the Doksy climatic station, and the air pollution data (SO2 in 1988–2015, NOX and AOT40F – ozone exposure in 1992–2015) from Radimovice station. In 2016, the stand volume increased by 26.0% to 136 m3 ha−1 (108 m3 ha−1 in 2006) and the volume of dead wood increase by 127.2% to 27 m3 ha−1 (12 m3 ha−1 in 2006). The horizontal structure of tree layer and natural regeneration was predominantly aggregated to random. More distinct changes in biodiversity and structural characteristics occurred in the natural regeneration (21.5%) compared to tree layer (2.8%). The precipitation had a significantly higher effect on radial growth compared to temperature. The lack of pre- cipitation in growing season and high temperature in previous autumn and winter were limiting factors for growth. Climatic factors had significant effect on diameter increment in July of the current year (P < 0.01) and June of the current and previous year (P < 0.05). Radial growth was negatively correlated with SO2 con- centrations (P < 0.01) and ozone exposure (P < 0.05). NOX concentrations had low effect on radial growth. The natural stand dynamics had positive effect on biodiversity and functional integrity of natural pine eco- systems.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Struktura i dynamika wielogeneracyjnych starodrzewów sosnowych występujących w obszarach ochrony ścisłej Kaliszki i Sieraków w Kampinoskim Parku Narodowym. Część 1. Zróżnicowanie gatunkowe, zagęszczenie i pierśnicowe pole przekroju
Structure and dynamics of uneven−aged Scots pine−dominated old−growth stands in Kaliszki and Sieraków strict protection areas in the Kampinos National Park. Part 1. Species composition, tree density and basal area
Autorzy:: Brzeziecki, B.
Zajączkowski, J.
Olszewski, A.
Bolibok, L.
Andrzejczyk, T.
Bielak, K.
Buraczyk, W.
Drozdowski, S.
Gawron, L.
Jastrzębowski, S.
Szeligowski, H.
Żybura, H.
Tematy:: forest dynamics
long−term research
old−growth forest
permanent study plot
strict protection
tree
species composition; Pokaż więcej
Wydawca:: Polskie Towarzystwo Leśne
Powiązania:: https://bibliotekanauki.pl/articles/978936.pdf Link otwiera się w nowym oknie
Opis:: The paper describes changes, which took place over the last 30 years in old−growth forest stands occupying two permanent research plots, established in the Kaliszki and Sieraków strict protection areas in the Kampinos National Park (central Poland). Both plots have a form of ecological transects. The Kaliszki plot is 20 m wide and 700 m long (1.40 ha), while the Sieraków plot (total area of 2.56 ha) consists of two parts: main (40×460 m) and side (40×180 m) transect. In the Kaliszki plot, the stand measurements were conducted in 1993, 2007, and 2017, while in the Sieraków plot – in 1989, 1994, 2006, and 2017. For every tree with breast height diameter (DBH) 5 cm, species identity, DBH and spatial coordinates were determined. Starting from the second census, all trees which had died (‘losses’), as well as trees which exceeded the DBH threshold (‘gains’) since the previous record were noted, as well. The major tree species occurring on sample plots are Scots pine (Pinus sylvestris), pedunculate oak (Quercus robur), silver and downy birch (Betula sp.), and black alder (Alnus glutinosa). During the study period, the overall tree density declined by ca. 50%. The diminishing trends occurred for all dominant tree species. In contrast to major, dominant tree species, the demographic status of a group of minor tree species (lime, hornbeam and maple) was much more stable. One may even speak about some expansion in this case. Particularly, hornbeam density increased rapidly in the period 2006−2017 in some areas of the main transect located in the Sieraków plot. The future studies will show if this tendency will be maintained and will include other regions of sample plots. Assuming a lack of significant disturbances, one may expect that the stands growing on research plots will rather slowly change in the nearest future. Most dynamics will have a quantitative and not qualitative character. One may anticipate, for example, a growing role of pedunculate oak at the expense of Scots pine, however, considering that the two species are rather long−living, they will probably for a long time keep their dominant roles in the stand canopies.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: Changes in horizontal structure of natural beech forests on an altitudinal gradient in the Sudetes
Autorzy:: Vacek, Z.
Vacek, S.
Bilek, L.
Remes, J.
Stefancik, I.
Tematy:: structural change
horizontal structure
natural forest
beech forest
European beech
Fagus sylvatica
forest dynamics
altitudinal gradient
Sudetes Mountains; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/41453.pdf Link otwiera się w nowym oknie
Opis:: The article describes horizontal structure of the tree layer, natural regeneration, snags and crown projections of natural beech stands on three permanent research plots in the wide altitudinal range in the Krkonoše Mts (Czech Republic). The spatial structure was classified from 1980 to 2010 and subsequently the prediction of spontaneous development with an outlook for 30 years (to 2040) was done by growth simulator. Hopkins-Skellam index, Pielou-Mountford index, Clark-Evans index and Ripley’s K-function were calculated. Further, the vertical structure and total diversity index was evaluated. The horizontal structure of individuals in the tree layer had not changed significantly during the monitored years. Tree spatial pattern of the lowest altitude lying herb-rich beech forest was mostly regular to random, in acidophilous mountain beech forest predominantly random and in fragments of beech groups around the timberline aggregated. Juvenile growth on all investigated plots was distributed aggregated and snags randomly. The horizontal structure of crown projection centroids had always higher values toward the regularity than tree layer and was random to regular. The result of principal component analysis also confirmed that spatial pattern was dependent on the altitude, but also on the number of trees.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Long-term dynamics of frequency in herb layer species of oak-pine Pino-Quercetum forests in southern part of Niepołomice Forest (southern Poland)
Długoterminowa dynamika zmian frekwencji gatunków runa boru mieszanego Pino-Quercetum w południowej części Puszczy Niepołomickiej (południowa Polska)
Autorzy:: Rakowska, Rita
Mazurkiewicz, Aleksandra
Mitka, Józef
Opis:: In a time-span of c. forty years (1980-2016) changes in herb layer of the mixed oak-pine Pino-Quercetum forest in southern part of Niepołomice Forest were evaluated by the quantitative measure of species frequency. In 1980-1995 the site eutrophication was noted, as mesotrophic species increased. In 2016 the investigation on 20 plots at the same forest site was repeated, using the same method of plant species frequency evaluation. The site eutrophication was stopped, since probably climatic factor (snowy winters damaging tree crowns) was ceased. Instead, a new species structure was established, with lesser percentage of locally characteristic species: Luzula pilosa, Pteridium aquilinum and Trientalis europaea, almost totally withdrawing of Stellaria longifolia, and flourishing Oxalis acetosella and Rubus plicatus. Newly appearing, invasive species Quercus rubra, and especially Padus serotina, pose a serious risk for the future integrity of the forest plant community.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 10.

Tytuł:: Tekstura karpackiego dolnoreglowego drzewostanu mieszanego o charakterze pierwotnym
Texture of a primeval lower montane mixed forest in the Carpathians
Autorzy:: Kołodziej, Z.
Paluch, J.
Bartkowicz, L.
Pach, M.
Tematy:: lesnictwo
Babiogorski Park Narodowy
regiel dolny
drzewostany mieszane
drzewostany swierkowo-bukowo-jodlowe
las pierwotny
tekstura drzewostanu
sklad gatunkowy
drzewa lesne
liczba drzew
piersnicowe pole przekroju
primeval forest
mixed stands
spatial pattern
structural heterogeneity
diversity index
forest dynamics theory; Pokaż więcej
Wydawca:: Polskie Towarzystwo Leśne
Powiązania:: https://bibliotekanauki.pl/articles/989790.pdf Link otwiera się w nowym oknie
Opis:: The aim of this study was to characterize the texture of a primeval forest composed of Fagus sylvatica (L.), Abies alba (Mill.) and Picea abies ((L.) H. Karst). Empirical data were collected in the Babia Góra National Park (southern Poland) in the stand being under strict protection since 1934. 259 circular plots with a radius of 7.0 m and an area of 154 m² each were established in nodes of 20×20 m grid. For individual plots and blocks of the combined plots representing gradient of spatial scales between 0.015 and 0.640 ha, the number of trees, diameter at breast height (dbh) distributions, basal areas and the values of structural diversity indices of Gini (GI), Shannon (SH) and Staudhammer−LeMay (STVI) were determined. The indices were also calculated for several types of theoretical distributions. Based on the values obtained for the theoretical distributions, the individual plots and the blocks of the combined plots were classified as representing simple (GI≤0.30;STVI≤0.10), moderately diversified (0.300.45; STVI>0.30) dbh structure. For all the spatial scales analyzed the average values of GI and STVI indices reached the level typical for populations of a high structural diversity (i.e. exceeded the values of 0.45 and 0.30 respectively). According to the GI and STVI values, the portion of stand patches with complex dbh structure ranged from 70.9% and 68.2% at the individual plots scale, respectively, up to 100% in the blocks of 16 plots (4×4). In general, in all the spatial scales analyzed the spatial diversification of the dbh distributions and basal area levels was higher than in managed selection forests and much higher than in managed single−storied stands. The dominant frequency of highly diversified dbh distributions found in the analysed stand was not concordant with the predictions of the forest dynamics theory based on developmental stages, according to which in primeval forests with a significant partition of Abies alba and Picea abies should prevail stand patches of rather simple dbh structure, characteristic for the long−lasting optimum stage.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Informacja

Wyszukujesz frazę "forest dynamics" wg kryterium: Temat