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Wyświetlanie 1-13 z 13
Tytuł:
Changes in runoff as an indicative measure of water retention status in the Bialowieza Primeval Forest
Autorzy:
Tyszka, J.
Stolarek, A.
Powiązania:
https://bibliotekanauki.pl/articles/38663.pdf
Data publikacji:
2013
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
run-off change
measurement
water retention
natural forest
Bialowieza Forest
Opis:
The study concerned changing status of water retention within an unique nature complex of the Białowieża Primeval Forest. The retention was evaluated based on an analysis of research results on water outflow from the lowland catchment of the river Łutownia – representative for physiographic conditions as well as those of habitats and tree stands in Poland’s part of the Forest. The catchment in the lowland hydrometric dissection at the Pogorzelce village – Old Białowieża Wilderness, covers the area of 120.1 km2 with natural flow conditions preserved. A unified sequence of measurements carried out since 1966 using unchanged methodology with respect to precipitation, air temperature and forest management status allowed to separate different phases of changes occurring in water resources of this protected forest complex. There were appraised periodical runoff changes and cycles including a decrease in water resources which occurred at the turn of the century. The retention capacity of the catchment was determined based on periodical changes in rainfall-runoff relations and the ongoing process of deteriorating water conditions of forest ecosystem was interpreted.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2013, 55, 2
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czy cała Puszcza Białowieska powinna być parkiem narodowym?
Should the whole Bialowieza Forest be a national park?
Autorzy:
Zientarski, J.
Szmyt, J.
Powiązania:
https://bibliotekanauki.pl/articles/1293519.pdf
Data publikacji:
2017
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
Puszcza Bialowieska
lasy gospodarcze
Bialowieski Park Narodowy
ochrona przyrody
uwarunkowania ekonomiczne
uwarunkowania spoleczne
uwarunkowania przyrodnicze
Białowieża Forest
Białowieża National Park
nature conservation
forest ecosystem conservation
sustainable forest
management
Opis:
In Poland, the stormy discussion on the future of the Białowieża Forest has been ongoing already for a long time. The disputes are mostly focused on seeking answers to two questions: how to protect these unique forest ecosystems and whether forest management threatens their naturalness. The discussion has grown stronger after the recent, enormous outbreak of Ips typographus in the Forest. The Białowieża Forest has been managed for years with no negative effect. However, antagonists of foresters blame forest management for degradation of the Forest’s ecosystems, which is caused by favoring the economic value of timber expected to be harvested in keeping with the management plans of 3 forest districts located in the Białowieża Forest. At any rate, such assumption, has nothing to do with reality. During this discussion the idea to extend the national park for all the Białowieża Forest revived. In this paper, we reviewed the economic, social and ecological dimensions which should be taken into consideration before making a decision on extending the Białowieża National Park. It should be underlined that the Park’s area is already under the strict protection; furthermore, 2/3 of the area of neighboring managed forests are under legal protection (the nature reserves, NATURA 2000, the so-called reference forests, etc.). All things considered, we cannot find any reasonable purpose (ecological, financial or social) for expanding the Park’s area from 10 500 ha (present status) to 62 500 ha (after extension). Also, we are convinced that sustainable forest management conducted in managed parts of the Białowieża Forest, which comprises the fulfillment of all forest functions and services, should not be perceived as a threat to naturalness of the Forest’s ecosystems.
Źródło:
Leśne Prace Badawcze; 2017, 78, 1
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring stanowisk granicznika plucnika [Lobaria pulmonaria L.] w lasach Nadlesnictwa Bialowieza i zalecenia praktyczne dla jego ochrony
Monitoring of stands of lung lichen [Lobaria pulmonaria L.] in Bialowieza Forest District forests and practical recommendations for its protection
Autorzy:
Paluch, R.
Powiązania:
https://bibliotekanauki.pl/articles/46091.pdf
Data publikacji:
2009
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
wystepowanie
ochrona porostow
stanowiska
porosty
lasy
monitoring
Nadlesnictwo Bialowieza
lesnictwo
granicznik plucnik
Lobaria pulmonaria
Źródło:
Leśne Prace Badawcze; 2009, 70, 2; 175-181
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in the structure of tree stands on bog habitats in the Bialowieza forest
Autorzy:
Czerepko, J.
Powiązania:
https://bibliotekanauki.pl/articles/38483.pdf
Data publikacji:
2010
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
structural change
tree stand
bog habitat
Bialowieza Forest
bog forest
permanent plot
plant succession
stand structure
Opis:
The analyses of 4 permanent study plots located in the Białowieża forest (NE Poland, at 52º43´ N, 23º50´ E) were carried out 4 times, first time in 1973 or 1974 and next in 1985, 1998, 2008. The paper presents the results of a long–term study on natural forest dynamics in two forest communities: raised-bog pine forest of the association Ledo-Sphagnetum magellanici Sukopp 1959 em. Neuhäusl 1969 and transitional bogs represented by the boreal spruce forest Sphagno girgensohnii-Piceetum Polak. 1962. On each measurement date the DBH of all trees were recognized. At the same time, stems of shrub species as well as tree species with the height lower than 1.3 m were counted within the experimental areas. During the study period the structure of stands changed significantly. The major change observed on raised bog sites was an increase in numbers of Betula spp., Picea abies (L.) H. Karst. and Quercus robur L. After 34th-year of observations the boreal spruce forest stand partly passed the terminal phase and regenerated. New species occurred in the stands, especially in their lower layer, are typical for oak-lime-hornbeam forest, such as e.g. Carpinus betulus L., Q. robur, Acer platanoides L. Rapid development of Corylus avellana L. was also observed. During last decades, the decrease in the number of Pinus sylvestris L. trees has been observed. The results of analyses of stand data in four research periods show that the wetland habitat of the Białowieża forest has been a subject to the processes of succession conditioned by environmental changes such as desiccation through lowering of the water table as well as climatic changes entailing inter alia an increase of the air temperature and a decrease of precipitation.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2010, 52, 1
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Xylocopa valga Gerst. (Hymenoptera: Apidae) w Polsce
Xylocopa valga Gerst. (Hymenoptera: Apidae) in Poland
Autorzy:
Huflejt, T.
Gutowski, J.M.
Powiązania:
https://bibliotekanauki.pl/articles/1294443.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
entomologia
pszczolowate
Apidae
zadrzechnia czarnoroga
Xylocopa valga
wystepowanie
Puszcza Bialowieska
Polska
Białowieża Forest
Polska
geographical distribution
biology
Opis:
In this article we review the distribution and new data on the occurrence of Xylocopa valga Gerst. (Hymenoptera: Apidae) in Poland. This is also the first report of X. valga occurring in the Białowieża Forest, where it was captured visiting flowers of Lychnis flos-cuculi L. in a sandy grassland adjacent to the forest in the vicinity of Grudki, a small village near Białowieża. All 15 known records of this species in Poland are compiled into a detailed list and the location of each sighting is presented on the map. In two cases, the known distributional data have been corrected and were brought up to date. The first case is a forgotten record of the species (Popov 1947) that was reconstructed based on museum specimens collected in the 1870s at Karolath, Silesia (formerly Germany, currently Poland: locality now named Siedlisko) and this record was added to the list. However, the second case concerns a record from Tuchla near Jarosław (Banaszak 1989), which was excluded from the list, because it had been published as a result of misinterpretation of the label on the old museum specimens. Information on the species’ biology, especially on preferred habitats and nesting in dead wood, are also presented. X. valga is regarded as a saproxylic species occurring in forests, but its ability to inhabit the steppe zone is also discussed in this article. Furthermore, a list of flowering plants (95 species representing 30 families) visited by this bee species has been prepared based on data from the literature as well as our own observations. The new record of X. valga in the Białowieża Forest in combination with recent data from Western Europe suggests that this subpontic-mediterranean species is expanding its natural range probably due to climate change. We are thus also discussing its potential to spread further nort h.
Źródło:
Leśne Prace Badawcze; 2016, 77, 4
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nietoperz karlik malutki Pipistrellus pipistrellus (Schreber 1774) w faunie Puszczy Białowieskiej
Common pipistrelle (Pipistrellus pipistrellus Schreber, 1774) in the bat fauna of the Bialowieza Primeval Forest
Autorzy:
Rachwald, A.
Ruczyński, I.
Powiązania:
https://bibliotekanauki.pl/articles/1311188.pdf
Data publikacji:
2015
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
Puszcza Bialowieska
lasy
fauna
nietoperze
Chiroptera
karlik malutki
Pipistrellus pipistrellus
wystepowanie
bat
Common pipistrelle
Białowieża Primeval Forest
Opis:
The occurrence of the Common pipistrelle in the bat fauna of the Białowieża Primeval Forest was expected, because the taxon P. pipistrellus was previously comprised of two separate species. Earlier observations of P. pipistrellus in the Białowieża area can mostly be counted for by the new species Soprano pipistrelle, which is considered equally widely distributed in the area. In this study, we were able to record and distinguish several passes of the Common pipistrelle by means of bat detecting techniques. Bats were found in two locations, the first one being the Białowieża village, whereas the second one is the woodland in close proximity of the Czerlonka village. It is very likely, that this species is more widely distributed in the Białowieża area, especially in the vicinity of human settlements.
Źródło:
Leśne Prace Badawcze; 2015, 76, 2; 180-183
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany jakości wód w rzekach Łutownia i Perebel w Puszczy Białowieskiej
Changes of water quality in the Lutownia and Perebel rivers in the Bialowieza Primeval Forest
Autorzy:
Janek, M.
Powiązania:
https://bibliotekanauki.pl/articles/1294313.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
Puszcza Bialowieska
hydrologia
rzeki
rzeka Lutownia
rzeka Perebel
jakosc wody
wody plynace
wlasciwosci fizykochemiczne
klasy jakosci
water quality
water chemistry
river
the Białowieża Primeval Forest
Opis:
The aim of the study was to determine changes in water quality, including chemistry of outflow from two rivers: Łutownia and Perebel located in the Białowieża Primeval Forest. Water chemistry was investigated once in every three months in the years 2011-2014. Catchments differed in forest cover and habitat types. The results of the analysis of river waters were compared with the limit values for each class of water quality as settled by the legal standards. It was found that the quality of the water in rivers declined due to high concentrations of carbon and nitrogen organic forms. In general, there was observed a decrease of the concentration of organic nitrogen and an increase of the concentration of mineral nitrogen, especially in the Perebel catchment area.
Źródło:
Leśne Prace Badawcze; 2016, 77, 4
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ekologia i biologia ptaków Puszczy Białowieskiej z perspektywy czterdziestoletnich badań
Ecology and biology of birds in the Bialowieza Forest: a 40-year perspective
Autorzy:
Czeszczewik, D.
Walankiewicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/1294404.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
Puszcza Bialowieska
Bialowieski Park Narodowy
fauna
ptaki
bogactwo gatunkowe
ekologia zwierzat
ptaki legowe
zagrozenia zwierzat
czynniki antropogeniczne
Białowieża National Park
temperate forests
predation
forest birds assembly
forest management
Opis:
The aim of this study was to review the most important results from the last 40 years of intense ornithological research conducted in the Białowieża Forest. Furthermore, we discuss the threats that may destroy the unique ecology and characteristics of this forest. Studying the avifauna of the Białowieża Forest provides us with a good general knowledge about natural ecological conditions and relationships, which prevailed in temperate European forests in the past. The avifauna of the Białowieża Forest is characterized by features associated with primeval habitats such as the stability of communities over time, high species richness, relatively low densities, high proportion of hole-nesting birds, very high predation pressure and weak, insignificant competition interactions. This emphasizes the importance of predation, excess of nesting sites for cavity nesting birds, high abundance of food, especially for insectivorous species and fluctuation of bird population size due to rodent outbreaks (pulsed resources). The most severe threats for the avifauna of the Białowieża Forest are: rejuvenation of tree stands, removal of dead wood, fragmentation of old-growth stands, change of tree stand composition (reducing the proportion of some tree species). In order to expand our ecological knowledge about birds, we should keep the Białowieża Forest fully protected for years to come. The main priority should be the maintenance of natural processes changing the forest’s species composition.
Źródło:
Leśne Prace Badawcze; 2016, 77, 4
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rodowa uprawa zachowawcza jodły pospolitej z rezerwatu "Tisovik" w Puszczy Białowieskiej
The ancestral conservative tillage of silver fir in the "Tisovik" reserve of the Bialowieza Primeval Forest
Autorzy:
Korczyk, A.F.
Powiązania:
https://bibliotekanauki.pl/articles/1311134.pdf
Data publikacji:
2015
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
Bialorus
rezerwat Tisovik
drzewa lesne
jodla pospolita
Abies alba
uprawa zachowawcza
Puszcza Bialowieska
Polska
uprawy rodowe
wartosc hodowlana
Abies alba Mill.
progeny test
Białowieża Primeval Forest
Polska
Opis:
The ‘Tisovik’reserve, located in the Belarusian part of the Białowieża Forest, holds an isolated relic stand of silver fir, situated 120 km to the north-east of the main forest. In order to preserve this relic fir stand, a ancestral conservative tillage consisting of the Jd 92 trial (plot I) and the Jd 94 trial (plots II and III) was established between 1992 and 1994 in the Polish part of the Białowieża Forest on the territory of the Hajnówka Forest District. The growth and development of the progeny of 20 firs were characterized by means of long-term observations made in these trials. In 2000 (at the age of 18), the firs in the Jd 92 trial (plot I) reached an average height of 394.86 cm with a mean diameter at breast height of 42.42 mm and the average rate of survival amounted to 75%. In the Jd 94 trial, the rate of fir survival on plot II was 70% (at the age of 15) with an average height of 277.08 cm and a diameter at breast height of 36.62 mm, while on plot III only 50 trees with an average height of 198.6 cm and a diameter at breast height of 24.49 mm survived. The results of this study show that the fir progeny in the ‘Tisovik’ reserve is of high breeding value. Therefore, the silver fir seed stock of the ‘Tisovik’ reserve is suitable for the establishment of new plantations in the Polish part of the Białowieża Forest and the Mazury-Podlasie Region.
Źródło:
Leśne Prace Badawcze; 2015, 76, 2; 153-167
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gradacyjne występowanie kornika drukarza Ips typographus (L.) (Col.: Curculionidae, Scolytinae) w aspekcie kontrowersji wokół Puszczy Białowieskiej
Mass outbreaks of the spruce bark beetle Ips typographus in the context of the controversies around the Bialowieza Primeval Forest
Autorzy:
Grodzki, W.
Powiązania:
https://bibliotekanauki.pl/articles/1294545.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
Puszcza Bialowieska
drzewostany swierkowe
swierk pospolity
Picea abies
szkodniki roslin
kornik drukarz
Ips typographus
wystepowanie
gradacja
zwalczanie szkodnikow
ochrona przyrody
ochrona lasu
bark beetle
Norway spruce
nature protection
Bialowieża Forest
Opis:
Spruce bark beetle Ips typographus (L.) (Col.: Curculionidae, Scolytinae) outbreaks occur in managed and protected forests alike, but although known of for a long time, management and control of this insect is a controversial subject due to the forests’ diverse nature and protection status. In this paper, an overview of the bark beetle, conditions leading to outbreaks, natural enemies and the efficiency of control measures is presented and put into perspective with regards to the current controversies concerning outbreak management. The Białowieża Primeval Forest is central to this discussion, because the area remains divided into parts with different nature protection statuses. Ideas concerning the current but also future outbreak progress and possible issues with the management of natural resources in this area are presented.
Źródło:
Leśne Prace Badawcze; 2016, 77, 4
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spór o Puszczę Białowieską w świetle sporu o ochronę przyrody na świecie
The Bialowieża Forest controversy in the light of the world dispute in conservation biology
Autorzy:
Witkowski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1293784.pdf
Data publikacji:
2017
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
Puszcza Bialowieska
lasy
gospodarka lesna
ochrona przyrody
ochrona bioroznorodnosci
koncepcja Soule
koncepcja Kareiva i Marvier
konflikt przyrodnicy-lesnicy
Białowieża Forest
naturalists vs. foresters
conservation dispute
Soulé and Kareiva
management of bark beetle
outbreak
mess in conservation forms
Opis:
The controversy between naturalists and foresters on the management of the Białowieża Forest is one of numerous disputes in conservation biology. Cause of the dispute is a difference in stand-point on the purpose of nature conservation. Biocentrists (Soulé 1985) argue that the only goal should be to preserve natural processes as well as endangered ecosystems and species. Anthropocentrists on the other hand (Kareiva, Marvier 2012) support conservation as a need of mankind, i.e. the sustainable support of ecosystem services with the protection of species and ecosystems simply being a side effect. Another important factor in the dispute is the management of bark beetle mass outbreaks. Foresters try to control by removing the infested trees, but naturalists protest against this practice. However, in 2013 the European Commission clearly presented its statement in this regard (EU Guidelines on Wilderness in Natura 2000) and thus the dispute has only shown that none of the debating parties are familiar with the EU guidelines. According to the author, the more serious problem of messy organization of the Białowieża Forest conservation is rarely raised in the dispute. Multiple protected areas were established in the forest based on six different law forms for nature conservation and two forms of international origin. Such surplus of forms and areas leads to chaos and hinders the management of this valuable area.
Źródło:
Leśne Prace Badawcze; 2017, 78, 4
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowe dane o występowaniu bogatkowatych (Coleoptera: Buprestidae) na terenie Puszczy Białowieskiej
New data on the occurrence of buprestid beetles (Coleoptera: Buprestidae) in the Bialowieza Primeval Forest
Autorzy:
Gutowski, J.M.
Królik, R.
Lugowoj, J.
Sućko, K.
Sweeney, J.
Powiązania:
https://bibliotekanauki.pl/articles/1291816.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
Polska Polnocno-Wschodnia
Puszcza Bialowieska
owady
chrzaszcze
bogatkowate
Buprestidae
wystepowanie
nowe stanowiska
chrząszcze
rozmieszczenie geograficzne
grupa Agrilus betuleti
Puszcza
Białowieska
płn.-wsch. Polska
Coleoptera
geographical distribution
new records
Agrilus betuleti species group
Białowieża Forest
North-Eastern Poland
Opis:
The aim of this work was to expand current knowledge on the species composition and distribution of the jewel beetles (Coleoptera: Buprestidae) in the Białowieża Primeval Forest (BPF) based on research conducted in the years 2000–2018 and a literature review. The BPF is considered the best-preserved forest of the European lowland and is a reference point for all forest research. Thus, knowledge of its fauna is vital. This research was conducted and incorporated the whole Polish part of the BPF, including Białowieża National Park (BNP), using standard methods for faunistic studies of terrestrial beetles. We also investigated potential microhabitats of saproxylic buprestid beetles and reared larvae from inhabited host material. Collected larvae and/or pupae were identified in the laboratory or grown to the adult stage. However, most specimens were collected using various traps (Lindgren, Moericke, barrier type Netocia and IBL-2), especially traps placed in the upper tree canopy. Two species previously unrecorded in the BPF (Agrilus graminis, A. mendax) and new information on several of the rarest Central European Buprestidae species (Buprestis splendens, Eurythyrea quercus, Anthaxia chevrieri, Chrysobothris chrysostigma, Agrilus antiquus croaticus, A. ater, A auricollis, A. convexicollis, A. pseudocyaneus) are presented here. Currently, 54 species of Buprestidae are known to occur the BPF area, of which 49 were collected from the Polish part and 26 were collected from the Belarusian part, whilst two species (Dicerca berolinensis and Eurythyrea austriaca ) have no specific location data. In the BNP, which covers about 17% of the Polish part of the BPF, up to 39 species of buprestid beetles have been found. We also provide an original key for differentiating Agrilus nicolanus – a species recently discovered in Poland (BPF and Biebrza Valley), that was previously known to occur only in Asia and the Lipetsk region in the European part of Russia – from Agrilus betuleti species group. In conclusion, the BPF is an important refugium of buprestid beetle richness including known forest relics.
Źródło:
Leśne Prace Badawcze; 2019, 80, 2
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tempo i kierunki zmian składu gatunkowego drzewostanów naturalnych w wybranych zbiorowiskach leśnych Puszczy Białowieskiej
Rate and direction of changes in tree species composition of natural stands in selected forest associations in the Bialowieza Forest
Autorzy:
Paluch, R.
Powiązania:
https://bibliotekanauki.pl/articles/1313006.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
Puszcza Bialowieska
drzewostany naturalne
zbiorowiska lesne
sklad gatunkowy
bor swiezy brusznicowo-sosnowy
bor mieszany trzcinnikowo-swierkowy
grad miodownikowo-grabowy
grad typowy
grad trzcinnikowy
leg olszowo-jesionowy
zmiany skladu gatunkowego
podobienstwo skladu gatunkowego
stale powierzchnie obserwacyjne
hornbeam expansion
natural stands
permanent study plots
ash dieback
Białowieża forest
Opis:
The main aim of the study was to determine changes in the species composition and structure of natural tree stands in the Białowieża Forest (BF), which occurred in the years 1975-2012, as well as to evaluate their trends, directions and rate. The study was carried out on 121 permanent research plots (50×50m), which represented the most important forest phytocenoses in BF, i.e. fresh pine-whortleberry forest Vaccinio vitis-idaeae-Pinetum Sokoł. 1980, fresh mixed spruce-reed grass forest Calamagrostio-Piceetum Soko³. 1968, oligotrophic form of hornbeam - bastard balm forest Melitti-Carpinetum Soko³. 1976, different forms of linden- hornbeam forest: Tilio-Carpinetum Tracz. 1962, alder-ash forest Fraxino-Alnetum W. Mat. 1952 and sub-boreal spruce forest on bog moss Sphagno girgenshonii- Piceetum Polak. 1962. On the plots selected, there was measured the diameter at breast height (DBH) of all trees, as well as every tree and shrub up to 1.3 m high was counted and described with reference to species. The measurements and observations were regularly repeated every 10-15 years. The results showed that over the last period of nearly 40 years, there has increased a share of common hornbeam Carpinus betulus L. in the structure of forest stands in numerous BF associations. This tree species has expanded into different forest habitats including poor, medium fertile and wetland sites. The results obtained indicate a trend towards formation of linden-hornbeam forests in BF phytocenoses. The most evident changes were recorded in hornbeam - bastard balm forest. In natural conditions of the majority of forest associations analyzed, there prevailed hornbeam trees in forest regeneration, except for the stands in fresh mixed pine forest and spruce forest on bog moss. In the latter two cases, hornbeam showed signs of its presence in the last observation period. Norway spruce (Picea abies L.) retreated into oligotrophic forest associations. In the recent decades, spruce populations have been dramatically reduced in the stands in mixed coniferous and different kinds of broadleaved forests. There have also decreased a share of light-demanding tree species, such as Scots pine (Pinus silvestris L.), pedunculate oak (Quercus robur L.) and silver birch (Betula pendula L.) in BF tree stands, including their regeneration-layer. Especially, Scots pine regeneration has not been successful. In the short period of time (about 15 years) there has been observed rapid and outsized reduction of ash Fraxinus excelsior L. populations in natural conditions of alder-ash forests. All through the last 10-15 years, there has been also observed increased rate of change in stand species composition. The trend and rate of change in stand species composition point out to a possibility of human intervention towards stimulation of natural regeneration so as to preserve valuable populations of threatened tree species in the Białowieża Forest.
Źródło:
Leśne Prace Badawcze; 2014, 75, 4; 385-406
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-13 z 13

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