Autor: D.P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Wlasciwosci fizykochemiczne oraz cechy budowy mikroskopowej drewna brzozy porazonej przez Piptoporus betulinus [Bull.Ex Fr.] P.Karst.
Autorzy:: Krutul, D.
Kozakiewicz, P.
Powiązania:: https://bibliotekanauki.pl/articles/814792.pdf
Data publikacji:: 1998
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: grzyby
czynniki chorobotworcze
porek brzozowy
drewno brzozowe
brzoza
budowa mikroskopowa
wlasciwosci fizykochemiczne
Piptoporus betulinus
biodegradacja
lesnictwo
drzewa lesne
Źródło:: Sylwan; 1998, 142, 04; 49-60
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Synzoochoryczne rozsiewanie żołędzi przez sójki Garrulus glandarius na powierzchniach zrębowych oraz pod drzewostanem
Acorns dispersal by jays Garrulus glandarius onto clear-cuts and under the forest canopy
Autorzy:: Kurek, P.
Dobrowolska, D.
Powiązania:: https://bibliotekanauki.pl/articles/989292.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
drzewa lesne
dab
Quercus
zoochoria
sojka
Garrulus glandarius
synzoochoria
zreby
drzewostany
odnowienia lasu
quercus sp
. acorn dispersal
jay
site preferences
clear−cuttings
Opis:: The aim of this study was to analyse the preferences of jays in terms of oak acorn deposition in accordance to availability of some types of habitat. Investigations were carried out in forested areas of the Olsztyn Lakeland (NE Poland) with Scots pine forests domination. In autumn of 2014 and 2015 122 acorns of Quercus robur with concealed Telenax transmitters were served in four locations and then dispersed by jays Garrulus glandarius. Acorns with transmitters were radio tracked and localized after dispersion in different types of habitats. We distinguished three types of habitat: forest stands >40 years old, young forests <25 years old as well as clear−cuts and other open areas. The availability of habitats were estimated by 144 random points (36 per each location). Obtained availability/utilisation data were analyzed with chi square test ( =0.05). Results showed that majority (76.4%) of dispersed acorns were deposited under canopy of Scots pine stands, while only 8.2% were deposited on clear−cuts and other open areas. It seems that jays avoid to scatter its caches among clear−cuts and other open areas when availability of these types of environment is compared. Jays preferred to scatter the acorns under canopy of older (>40 years old) stands. It proves that the regeneration of oaks in clear−cuts is with low probability of success. The results suggest that density and high quality of regeneration that occurred on some of the clear−cuts seem to be a synchronization relic of oaks' mast crop and Scots pine fellings. In these circumstances the best solution to obtain oak regeneration is to synchronize the harvest with mast crops and carry it out immediately after acorn production to make an oak regeneration success guaranteed.
Źródło:: Sylwan; 2016, 160, 06; 512-518
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Liczebność odnowienia naturalnego w lukach w drzewostanach jodłowo-bukowych w Świętokrzyskim Parku Narodowym
Number of natural regeneration of gaps in fir-beech stands in the Swietokrzyski National Park
Autorzy:: Wrzesiński, P.
Dobrowolska, D.
Krajewski, S.
Zajączkowski, P.
Powiązania:: https://bibliotekanauki.pl/articles/989083.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
Swietokrzyski Park Narodowy
drzewostany jodlowo-bukowe
luki drzewostanowe
wielkosc luki
odnowienia naturalne
podrost
sklad gatunkowy
jodla pospolita
Abies alba
buk zwyczajny
Fagus sylvatica
wzrost roslin
gap dynamics
canopy gaps
disturbance
shade tolerance
competition
Opis:: Forest gaps, openings in the canopy caused by death of one or more trees, are the dominant form of natural disturbance in the temperate forests. Gaps play a critical role in driving stand dynamics and influencing forest growth cycle. They increase habitat diversity, structural complexity, fauna and flora species diversity. The size of a gap may strongly influence tree species regeneration composition, vegetation growth, nutrient cycling, microclimate and may have considerable effect on a number of biological processes. The main aim of this study was to understand the effects of gap size diversity on species composition and number of natural regeneration. The study was carried out in near−natural mixed stands dominated by beech (Fagus sylvatica L.) and silver fir (Abies alba Mill.) representing different development stages and phases in the Świętokrzyski National Park, (central Poland). All gaps over than 20 m 2 intersected by a transects line were sampled. All saplings and seedlings were counted in circular plots (10 m²) evenly spaced along the long axis in the N−S and E−W gradients of each gap. Natural regeneration was analyzed for 62 canopy gaps of various sizes. The gaps were classified into three size classes: small ≤100 m², medium 101−250 m² and large >250 m². The gap size ranged from 21 to 397 m², with a median of 104 m². The dominant tree species regenerated in gaps were fir (69%) and beech (24%). The number of regeneration significantly depended on the gap size (p=0.027). The highest frequency of saplings was found in gaps of ≤100 m². The number of natural regeneration was significantly negatively correlated with gap size (r=–0.261, p=0.040). The density of silver fir regeneration was significantly higher in gaps of ≤100 m² and 101−250 m² (p<0.05). The share of fir in stand species composition effected on the number of silver fir and European beech regeneration. The results of this study demonstrated the utility of gap−based approach for better understanding ecosystem responses to tree cutting for modern forest management.
Źródło:: Sylwan; 2017, 161, 06; 485-495
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Reakcje biologiczne grubogałęzistych sosen (Pinus sylvestris L.) na podkrzesywanie w zależności od zastosowanych środków do zabezpieczeń ran
Biological reactions of thick-branched Scots pines [Pinus sylvestris L.] to pruning in relation to the substance used to save wounds
Autorzy:: Giefing, D.F.
Złota, M.
Wykpisz, P.
Stypik, P.
Powiązania:: https://bibliotekanauki.pl/articles/1016129.pdf
Data publikacji:: 2007
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: galezie
podkrzesywanie drzew
lesnictwo
Lacbalsam
rany po cieciu
zabezpieczenia ran
Pinus sylvestris
Funaben
farby emulsyjne
sosna zwyczajna
grubosc
zarastanie
drzewa lesne
thick−branched pine trees
pruning
pine plantation cultivation
wound protection
knots
Opis:: The aim of the research was to study the risk of infection through wounds made during pruning of thick−branched pine trees growing in plantation cultivation the seedling seed orchard and to evaluate the impact of pruning on the healing process of wounds protected by three chemical preparations. After branch removal, the wounds were protected with emulsion paint, Funaben and lac−balsam. Some trees with unprotected wounds were left as control. A total of 354 knots reaching the size of 70 mm in diameter (without bark) were examined. Eight years after the treatment, all the knots were found to be healthy. However, differences were observed in the time of wound closure depending on the preparation applied.
Źródło:: Sylwan; 2007, 151, 11; 60-66
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Analiza wybranych aspektów rynku owocników pieprznika jadalnego (Cantharellus cibarius Fr.)
Analysis of some aspects of the market in fruit bodies of chanterelle (Cantharellus cibarius Fr.)
Autorzy:: Pietka, J.
Staniszewski, P.
Kowalczuk, D.
Powiązania:: https://bibliotekanauki.pl/articles/45465.pdf
Data publikacji:: 2012
Wydawca:: Instytut Badawczy Leśnictwa
Tematy:: lesnictwo
uboczne uzytkowanie lasu
grzyby jadalne
wystepowanie
czynniki klimatyczne
rynek grzybow
pieprznik jadalny
Cantharellus cibarius
skup
ceny
Źródło:: Leśne Prace Badawcze; 2012, 73, 3
1732-9442
2082-8926
Pojawia się w:: Leśne Prace Badawcze
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Zdrowotność oraz czas zarastania sęków po podkrzesaniu dębu
Knot soundness and occlusion time after artificial pruning of oak
Autorzy:: Mederski, P.S.
Szczawinski, D.
Giefing, D.F.
Naparty, K.
Brunka, M.
Powiązania:: https://bibliotekanauki.pl/articles/45721.pdf
Data publikacji:: 2019
Wydawca:: Instytut Badawczy Leśnictwa
Tematy:: lesnictwo
drzewa lesne
drzewa lisciaste
podkrzesywanie drzew
dab
Quercus
seki zdrowe
seki zepsute
zarastanie
Źródło:: Leśne Prace Badawcze; 2019, 80, 1
1732-9442
2082-8926
Pojawia się w:: Leśne Prace Badawcze
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Tempo dekompozycji opadu organicznego podczas przemian siedlisk łęgowych
Decomposition rate of the litter fall in the course of riparian habitat changes
Autorzy:: Kawałko, D.
Halarewicz, A.
Kaszubkiewicz, J.
Jezierski, P.
Powiązania:: https://bibliotekanauki.pl/articles/987145.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
Park Krajobrazowy Dolina Jezierzycy
siedliska legowe
leg wiazowo-jesionowy
zespol Ficario-Ulmetum minoris
grad srodkowoeuropejski
zespol Galio sylvatici-Carpinetum betuli
opad organiczny
dekompozycja
dynamika rozkladu
wlasciwosci chemiczne
zmiany wlasciwosci
ficario ulmetum−minoris
galio sylvatici−carpinetum betuli
litter fall
chemical composition
jezierzyca valley
Opis:: Disturbances occurring in the riverside forest ecosystems also translate into the ability of litter decomposition. Determination of the litter decomposition rate and the changes in its chemical composition in the course of riparian habitat changes was the aim of the study. The study was conducted in 2011 in Jezierzyca River Valley Landscape Park located partly on a floodplain of Oder river (SW Poland). Two riparian forest habitats (Ficario Ulmetum−minoris) were selected for the study: site L (riparian forest), immediately adjacent to the old river bed and site LZ (drying riparian forest), bordering site L on the edge of the floodplain and adjacent to oak−hornbeam forest (Galio sylvatici−Carpinetum betuli) that constituted site G. The study used the method of litter bags. The research material was collected every quarter except for winter, during 2 years. The decomposition rate of organic matter defined by the loss of organic matter, understood as the difference between the previous and the current state. We analyzed content of total organic carbon, total nitrogen and available phosphorus, potassium and magnesium in the litter fall. As the result, decomposition occurred the most rapidly in the oak−hornbeam forest community and the slowest in the drying riparian forest. Regardless of the type of forest community rate of decomposition of the fresh organic matter is the highest in winter and spring. The highest content of organic carbon and total nitrogen was observed in the oak−hornbeam forest, slightly lower in the riparian forest, while the lowest in the drying riparian forest. Similarly the content of available phosphorus, potassium and magnesium was presented. Along with the progressive decomposition, examined material had increased Corg and N content, but reduced C/N ratio. In all analyzed forest com− munities were found the release of P, K and Mg in the environment, which was the most intense in spring and summer.
Źródło:: Sylwan; 2017, 161, 07; 565-572
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Przystosowanie drzew, lasów i leśnictwa do zmian klimatycznych
Adaptation of trees, forests and forestry to climate change
Autorzy:: Chmura, D.J.
Howe, G.T.
Anderson, P.D.
St.Clair, J.B.
Powiązania:: https://bibliotekanauki.pl/articles/1009278.pdf
Data publikacji:: 2010
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
zmiany klimatyczne
skutki ekologiczne
lasy
drzewa lesne
strategie adaptacyjne
gospodarka lesna
zarzadzanie
rozwoj zrownowazony
adaptation strategy
management
resistance
resilience
sustainable forestry
Opis:: Ongoing climate change will likely expose trees and forests to new stresses and disturbances during this century. Trees naturally adapt to changes in climate, but their natural adaptive ability may be compromised by the rapid changes projected for this century. In the broad sense, adaptation to climate change also includes the purposeful adaptation of human systems, which includes forestry. In this article, we briefly review the expected impacts of projected climate change on trees and forest ecosystems in Poland. We further provide a framework for designing adaptive strategies to sustain or enhance forest growth, health, and ecosystem services in new climates. Within this framework, we distinguish two related objectives: (1) adaptation of decision−making process in forest management and (2) adaptation of forest ecosystems. Each of these objectives may be achieved through strategies and options whose applicability is discussed in relation to major forest functions – ecological and societal, commercial, and multiple−use. Knowledge gaps and research needs are also identified. We conclude that the recent emphasis on sustainable multifunctional forestry and the current ownership structure in Poland will facilitate adaptation of Polish forests to future climates. However, much remains to be learned about the impacts of climate change, especially at the ecosystem level. Cooperation between researchers and forest managers is critical for developing better management strategies for adapting forests to climate change.
Źródło:: Sylwan; 2010, 154, 09; 587-602
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Dokładność określania struktury dnia roboczego metodą obserwacji migawkowych przy zrywce drewna
Accurancy of working day structure determining of the timber skidding by snapshot observations
Autorzy:: Pszenny, D.
Giedrowicz, A.
Staniszewski, P.
Moskalik, T.
Powiązania:: https://bibliotekanauki.pl/articles/985704.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
prace lesne
dzien roboczy
zrywka drewna
struktura dnia roboczego
obserwacje migawkowe
two−stage skidding
structure of the working day
timing
snapshot observations
Opis:: One of the most difficult technological operations in forest utilization is wood transport, especially its first stage i.e. extraction. This is related to the fact that the forest operations must be economically effective, but also safe for the forest environment. Difficult terrain conditions require determining and choosing the optimal variant of skidding. The most popular method for optimizing work is the use of working day photography. However, it is time−consuming and labor−intensive, that is why it is possible to use an alternative way of measuring working time, i.e. snapshot observations. It is therefore important to determine which measurement method is appropriate for the complicated and variable production processes in forestry. The aim of the research was to assess the accuracy of snapshots at intervals of 1 and 5 minute in relation to the stopwatch time study (which was a reference measurement), carried out for a two−stage wood logging in quasi−mountain terrain conditions of the Elbląg Upland (N Poland). It’s mountain like characteristics causes some difficulties in the forest works. Data for the study were collected in two periods – summer and winter. We did not prove statistically significant differences between the methods studied.
Źródło:: Sylwan; 2019, 163, 04; 292-299
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Badanie pracy przy podkrzesywaniu drzew - czasochlonnosc i wydajnosc
Autorzy:: Giefing, D.F.
Holota, R.
Stefanski, P.
Srednicki, J.
Powiązania:: https://bibliotekanauki.pl/articles/812975.pdf
Data publikacji:: 1996
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: czasochlonnosc
podkrzesywanie drzew
wydajnosc pracy
lesnictwo
zabiegi pielegnacyjne
Źródło:: Sylwan; 1996, 140, 01; 37-44
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Dokładność określania struktury dnia roboczego pracy harwestera metodą obserwacji migawkowych
Accuracy of determining the working day structure of machine timber harvesting with work sampling method
Autorzy:: Pszenny, D.
Fit, P.
Kwiatkowska, K.
Potoczny, B.
Koperek, M.
Staniszewski, P.
Moskalik, T.
Powiązania:: https://bibliotekanauki.pl/articles/882738.pdf
Data publikacji:: 2018
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:: lesnictwo
pozyskiwanie drewna
maszyny lesne
harwestery
struktura dnia roboczego
obserwacje migawkowe
Źródło:: Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2018, 20, 2[56]
1509-1414
Pojawia się w:: Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Charakterystyka masy tuszy i poroży byków jeleni (Cervus elaphus L.) bytujących w Lasach Spalskich i Lasach Gostynińsko-Włocławskich w Polsce centralnej
Characteristics of body and antlers mass of red deer stags (Cervus elaphus L.) inhabiting Spalskie Forest and Gostyninsko-Wloclawskie Forest in Central Poland
Autorzy:: Nasiadka, P.
Kowalski, M.
Sadowski, B.
Wojtan, R.
Merta, D.
Powiązania:: https://bibliotekanauki.pl/articles/989338.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
lowiectwo
Lasy Spalskie
Lasy Gostyninsko-Wloclawskie
zwierzeta lowne
jelen europejski
Cervus elaphus
byki
masa tuszy
masa poroza
cervus elaphus
body mass
antlers
mass
central poland
Opis:: The aim of the study was to demonstrate how the trophy quality of antlers of the red deer stags living in two large forest complexes in the Mazowsze region (central Poland) differs from those inhabiting other regions of the country. The study used the data describing the body and antlers weight of 272 stags shot in 2005−2014 in two large, separated from each other, forest complexes of Spała and Gostynin. The stags from both forest complexes do not differ from each other in body weight and antler forms. The average body weight of the stags at the age of 12 is approximately 120−140 kg. The characteristics of antler forms of the stags harvested by hunters may not reflect the actual state because of the use, in practice, of the selection criteria instead of random killing. The most frequently harvested antler forms of the selection stags in the age classes of 3−5 years and 6−8 years are regular eight−pointers and irregular twelve−pointers, respectively. However, the small sample size used and the specific rules of harvesting the older stags do not allow to characterize the antler forms of the stags older than 9 years. In the autumn−winter period, a decrease in the body weight of the rutting stags at the age of over 6 years, as well as of the young, 2−5−year−old, stags is observed. The loss in body weight in young stags is approximately 20%, while in older stags – 35%. The decrease in body weight in the autumn−winter period is not stable. The largest, representing nearly 50% of the total weight loss, was recorded after the rut. In the period between November and December even a slight increase in body weight was noted followed again by a decline by the end of the winter.
Źródło:: Sylwan; 2016, 160, 09; 777-788
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: "Fokusowe" gatunki w ochronie przyrody w lasach
"Focal" species in nature protection in forests
Autorzy:: Zawadzka, D.
Drozdowski, S.
Zawadzki, G.
Madej, W.
Pierchala, P.
Soltys, A.
Powiązania:: https://bibliotekanauki.pl/articles/881676.pdf
Data publikacji:: 2017
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:: lesnictwo
ochrona przyrody
lasy
gatunki chronione
bielik
bobr europejski
gluszec
wilk
zubr
cis
dab
dab Bartek
znaczenie kulturowe
znaczenie ekologiczne
znaczenie spoleczne
Źródło:: Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2017, 19, 1[50]
1509-1414
Pojawia się w:: Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Uszkodzenia drzew w następstwie trzebieży wczesnych w nizinnych drzewostanach świerkowych
Tree damage in lowland spruce stands caused by early thinnings
Autorzy:: Bembenek, M.
Giefing, D.F.
Karaszewski, Z.
Mederski, P.S.
Szczepańska-Alvarez, A.
Powiązania:: https://bibliotekanauki.pl/articles/991597.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
uzytkowanie lasu
drzewostany nizinne
trzebiez wczesna
drzewostany swierkowe
swierk
uszkodzenia drzew
spruce
tree damage
timber harvest methods
early thinning
Opis:: The paper presents analysis of tree damage after early thinning in lowland spruce stands. Percentage of tree with damage and weighted damage index (WDI) were considered. Three different thinning operations were analysed, in which different cutting method was applied. The smallest level of damage was observed when short wood system (SWS) was used. There were no significant differences between frequency of damage when full tree (FTS) and long wood (LWS) systems were compared.
Źródło:: Sylwan; 2013, 157, 10; 747-753
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki