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Wyświetlanie 1-12 z 12
Tytuł:
Forest site conditions and the threat for insect outbreaks in the Scots pine stands of Polissya
Autorzy:
Andreieva, Olena
Goychuk, Anatoliy
Powiązania:
https://bibliotekanauki.pl/articles/2041502.pdf
Data publikacji:
2020
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
bark beetles
foliage browsing insects
hygrotop
trophotop
Opis:
Scots pine (Pinus sylvestris L.) is the most spread forest tree species in Polissya and the most damaged by foliage browsing and stem insects. The aim of this study was to reveal the changes in the distribution of different forest site conditions for 2010–2019 in Scots pine forests of the selected forestry enterprises of Polissya and possible consequences for the spread of foliage browsing insects. Database of Production Association ‘Ukrderzhlisproekt’ (by 2010 and 2019) was analysed for five State Forest Enterprises (FE) that are located in the Central (Zhytomyr Region) and Western (Rivne and Volyn Regions) Polissya, where the large scale outbreaks of stem pests were registered last decade. The types of forest site conditions were designated in accordance with the Ukrainian typology. Distribution of the forest area by trophotops and hygrotops was evaluated for the forest-covered area, for Scots pine stands, and for pure Scots pine stands in 2010 and in 2019. For 2010–2019, the area of all Scots pine forests and its proportion in the forest-covered area has significantly decreased in the most of analysed forest enterprises. The change for 2010–2019 in the distribution both by the trophotops and by hygrotops of the entire forest-covered area, the area of all Scots pine forests and pure pine forests is not statistically significant. However, in assessment year 2019, the proportion of stands in the moist types of forest site conditions slightly increased. It may be the result of the stands’ mortality in the driest sites after an outbreak of bark beetles. A greater decrease in the proportion of Scots pine forest area in the dry poor, fresh poor, and dry relatively poor forest site conditions was found in the western direction. Therefore, the noted decrease in the foci areas of foliage browsing insects in Polissya in 2010–2012 compared to the 2000–2002 could be associated with a decrease in the most preferred stands, namely the poorest and driest types of forest site conditions.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 4; 270-278
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elektroniczne teksty: recykling kultury i zbiorowej tożsamości
Digital Texts: Culture and Collective Identity Recycling
Autorzy:
Ślósarz, Anna
Powiązania:
https://bibliotekanauki.pl/articles/521286.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
Collective identity
digital texts
context
browsing
resources
social media
conversational archetypes
Opis:
Maleje czytelnictwo książek, prasy, rola doświadczenia. Współczesną zbiorową tożsamość odzwierciedlają teksty elektroniczne. Przejawiają się w nich różne tożsamości: cywilizacyjna, kulturowa, religijna, narodowa, rodzinna, płciowa, zawodowa, artysty i sztuki. Teksty kultury są jednak wyrwane z macierzystych kontekstów. Ulegają recyklingowi. Pośpieszne przeglądanie cyfrowych zasobów ogranicza ich przeżywanie, a media sprowadzają interakcje użytkowników do konwersacyjnych archetypów. Ludzie nie potrafią twórczo uczestniczyć w słabo rozumianych interakcjach. Zbiorowe tożsamości w Sieci strukturalizuje technologia.
The role of readership and experience is declining. Collective identity is reflected by electronic texts. They show different identities: civilizational, cultural, religious, national, family, gender, professional, artistic. Cultural texts, however, are removed from their native contexts and recycled. Fast browsing of digital resources limits emotional experience. Social media limit the interactions of users to only six conversational archetypes. People are unable to function creatively in the poorly understood interactions. The collective identity on the Internet is molded by digital texts.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis. Studia de Cultura; 2015, 7, 1 "Re: Reprezentacja – Rekonstrukcja – Reinterpretacja"; 53-69
2083-7275
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis. Studia de Cultura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sezonowa dynamika zgryzania i jego wpływ na wzrost sadzonek gatunków liściastych w pierwszym roku po założeniu uprawy
Seasonal dynamics of deer browsing and its impact on deciduous saplings during first year after planting
Autorzy:
Nasiadka, P.
Lipski, S.
Powiązania:
https://bibliotekanauki.pl/articles/1018509.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zgryzanie
lowiectwo
wzrost roslin
drzewa lisciaste
sadzonki
dynamika zgryzania
lesnictwo
szkody lowieckie
uprawy lesne
browsing
damage by game animals
seasonal dynamics of browsing
broadleaved species
damage survey
Opis:
The lack of knowledge about seasonal dynamics and impact of deer browsing on deciduous saplings in plantations in managed forests in Poland raises difficulties in assessing the impact of cervids on forests and in selecting effective methods for protecting plantations against damage caused by deer. The studies covered 1129 saplings of sycamore, oak, beech, linden and birch species that were planted on the unfenced sites accessible for animals and fenced sites left for comparison.
Źródło:
Sylwan; 2006, 150, 05; 3-15
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of initial light intensity and deer browsing on Taxus baccata saplings: a six years field study
Autorzy:
Iszkulo, G.
Nowak-Dyjeta, K.
Sekiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/957073.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
light intensity
deer
browsing
Taxus baccata
sapling
yew
European yew
rare species
endangered plant
Opis:
European yew (Taxus baccata L.) is a rare species, but is the focus of great interest because of the species recovery attempts and its use in medicine. The aim of this study was to determine the optimum conditions for the development of the young generation of this species. Four-year old yew seedlings were grown under artificial light reduction: 2, 8, and 30%, as well as in full light. The seedlings were then planted in natural conditions in fenced and unfenced areas. The results of six years field studies indicated that the greatest impact on survival was shown by the light conditions from the period before planting under the canopy of trees. Seedlings from the 2 and 8% of light showed the greatest mortality. The reason was the sudden change in light conditions, because at the time of planting (early spring), there was no reduction of light under deciduous trees. Almost all of the unfenced yew seedlings were grazed by deer, but yew survival in the unfenced group was surprisingly high despite the permanent grazing. This was explained by the high resistance of yew to cutting and the protection of seedlings by a dense layer of Rubus. The results indicated that yew trees require protection against animals for normal development, even if animals have not previously had contact with Taxus and that yew seedlings are very sensitive to sudden changes in light. Both conclusions can be applied in the development of natural and artificial regeneration of European yew and other endangered plants.
Źródło:
Dendrobiology; 2014, 71; 93-99
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A preliminary study of estimating a mental workload with web-browsing using stress biomarkers
Autorzy:
Nomura, S.
Fujita, M.
Sakamoto, T.
Powiązania:
https://bibliotekanauki.pl/articles/332981.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
stress
web browsing
immunoglobulin A
cortisol
psychophysiology
stres
przeglądanie stron WWW
immunoglobuliny A
kortyzol
psychofizjologia
Opis:
The Recent rapid growth of the information technology aid people to improve the performance in processing their job activities. These changes, in turn, force them to carry out their job activities using computers in the workplace; that results in the increase of somatic and/or mental stresses. In this study, we conducted a preliminary experiment to estimate an impact of web-browsing on human mind and body. Two types of web-browsing tasks, which are a 18-minuetes of continuous web-browsing and an intermittent web-browsing (first 45 second of each 1-minutes interval), were given to the subjects (10 healthy male aged from 20-23) with within-subjects experimental design. With regard to physiological measures, two prominent stress biomarkers, salivary immunoglobulin A (IgA) and cortisol, were employed. Comparing among the task conditions, relatively larger and long-lasting increase of IgA and smaller decrease of cortisol was observed with an intermittent web-browsing despite there was no difference in the psychological state. These results illustrate the difficulty of estimating the mental workload caused by web-browsing and the importance of employing physiological indices.
Źródło:
Journal of Medical Informatics & Technologies; 2015, 24; 53-58
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The spatial pattern and microsites requirements of Abies alba natural regeneration in the Karkonosze Mountains
Autorzy:
Szymura, T H
Dunajski, A.
Aman, I.
Makowski, M.
Szymura, M.
Powiązania:
https://bibliotekanauki.pl/articles/41501.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Karkonosze Mountains
Norway spruce
Picea abies
silver fir
Abies alba
microsite requirement
natural regeneration
age structure
browsing
safe site
seedling dispersal
spatial distribution
Opis:
Progeny of four adult silver firs, which were an admixture in Norway spruce (Picea abies) stand was, analyzed. The study was done in lower mountain zone of the Karkonosze (Giant Mts.) National Park (SW Poland). The seedlings occurred in two clumps related to the position of adult trees, whereas spatial pattern of the seedlings inside each clump was random. The seedlings were spaced mainly in distances 5–25 from the nearest adult tree. The maximal distance was up to 50 m. Most seedlings were established in accordance with main wind directions. Also, in these directions seedlings were more distant from adult trees than in other directions. The seedlings grew in better light environment (12% of PPFD) than average (9,6% PPFD). This effect was statistically significant. The height increment of the seedlings was low and was not correlated with light conditions. Similarly, there was not any correlation between the apical dominance ratio and light. The lack of this correspondence we attributed to browsing. The silver fir seedlings were significantly underrepresented in patches of Vaccinium myrtillus, on raw needles, under crown of adult trees and in concave micro-relief form. The underrepresentation in the places covered by canopy and in patches of bilberry we related to the indirect effect of continuous browsing, which leads to higher seedlings mortality in more shaded places and sites of stronger competition between forest floor vegetation and silver fir seedlings.
Źródło:
Dendrobiology; 2007, 58; 51-57
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena aktywności żerowej Cervus elaphus na zrewitalizowanych łąkach śródleśnych na podstawie analizy intensywności zgryzania runi
Evaluation of Cervus elaphus foraging activity on revitalised mid-forest meadows based on analysis of sward browsing intensity
Autorzy:
Daszkiewicz, J.
Goliński, P.
Powiązania:
https://bibliotekanauki.pl/articles/372373.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
jeleń europejski
łąki śródleśne
renowacja runi
aktywność żerowa
intensywność zgryzania runi
red deer
mid-forest meadows
sward renovation
foraging activity
sward browsing intensity
Opis:
Celem niniejszej pracy jest ocena aktywności żerowej jelenia europejskiego na łąkach śródleśnych poddanych renowacji z wykorzystaniem różnych metod. Badania przeprowadzone na obiektach doświadczalnych wykazały, że zdecydowana większość aktywności żerowej zwierząt miała miejsce na powierzchniach odnowionych przy pomocy metody pełnej uprawy połączonej z wysiewem specjalistycznych mieszanek nasiennych. Stosunkowo niewielki efekt dało zastosowanie metody podsiewu. Żerowa-nie na obiektach kontrolnych miało charakter incydentalny, co pozwala wnioskować, że ruń tych powierzchni łąk nie spełniała wymagań pokarmowych jelenia europejskiego.
Aim of this study is evaluation of red deer foraging activity on renovated mid-forest meadows using different methods. Research, carried out on experimental sites, showed, that most of grazing activity of animals falls on areas renovated by full tillage method combined with sowing of specialised seed mixtures. Relative low effect occurs by using of oversowing method. Foraging activity on control areas was very low, this allow to conclude that sward of this mid-forest meadows didn’t fulfil nutritional needs of red deer.
Źródło:
Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski; 2015, 158 (38); 66-75
1895-7323
Pojawia się w:
Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wzrost i przeżywalność jodły pospolitej (Abies alba Mill.) w zależności od gatunku osłaniającego na terenie Karkonoskiego Parku Narodowego
Influence of stand canopy on growth and survival of silver fir (Abies alba Mill.) in the Karkonoski National Park
Autorzy:
Dobrowolska, D.
Powiązania:
https://bibliotekanauki.pl/articles/991860.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
odnowienia podokapowe
drzewostany przebudowywane
sklad gatunkowy
Karkonoski Park Narodowy
drzewa lesne
jodla pospolita
Abies alba
wzrost roslin
przezywalnosc
conversion
artificial regeneration
browsing
height increment
survival
Opis:
Article presents the assessment of growth and survival of silver fir seedlings planted under stand canopies constituted by common beech, European larch, Norway spruce, Scots pine and silver birch. Measurements were carried out in Karkonoski National Park (SW Poland) in 2001 and 2011. The tallest trees were growing under the canopy of larch both in 2001 and 2011.
Źródło:
Sylwan; 2013, 157, 03; 197-203
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring uszkodzeń spowodowanych przez jeleniowate w młodych drzewostanach i odnowieniach Gorczańskiego Parku Narodowego
Monitoring of the deer-related damage to the young stands and regeneration in the Gorczanski National Park
Autorzy:
Miścicki, S.
Żurek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/989815.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy
Gorczanski Park Narodowy
drzewostany mlode
odnowienia lasu
odnowienia podokapowe
szkody w lesie
uszkodzenia drzew
szkody lowieckie
jeleniowate
monitoring
bark−stripping
browsing
district
impact
protection
stem
terminal shoot
Opis:
Assessment of the impact of large herbivores on young generation of trees in the protected forests can support decisions about whether to intervene in natural ecosystems (e.g. individual tree protection, animal culling) or not. A study on the condition of forest regeneration, including the assessment of the damage caused by deer, was performed in the Gorczański National Park (GNP; southern Poland) in 1993 for the first time. The inventory was repeated in 1996 and 2011 on the same 415 concentric permanent sample plots located in the centers of 400×400 m grid. Trees with diameter <16 cm or height 1.3 m were counted. The impact of deer was assessed using: (i) the share of browsed terminal shoots in h=0.3−1.3 m class trees and the tolerable (based on a reference) share of browsed trees of such height with the most damaged tree species taken into account and (ii) the proportion between the density of recently (the previous year) debarked, frayed or broken trees and the tolerable (based on a reference) density of such trees. The main interpretation unit was composed of all stands in the GNP, while stands in particular protection districts formed lower level. Over the time, the density of trees in the regeneration layer increased (fig. 1). The density of recently debarked (frayed or broken) trees decreased considerably (fig. 2), even if a large number of trees (especially silver fir) with old wounds existed (fig. 4). The density of the browsed trees remained more or less unchanged. This type of damage most frequently affected silver fir, sycamore maple and rowan (fig. 3). Differences between the level of forest regeneration damage in different protection districts of the GNP remained similar (fig. 5). The deer impact assessed on the basis of the density of debarked trees significantly decreased to be classified as tolerable in 2011. However, the impact assessed with the share of trees with the browsed terminal shoot did not reach the tolerable level in one protection district. Results show that measures undertaken to protect forest regeneration produce a partially positive effect. The browsing level was still too high. Differences in the deer impact on the forest regeneration between protection districts can be considered as permanent ones.
Źródło:
Sylwan; 2015, 159, 06; 505-515
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preferencje żerowe saren w odniesieniu do różnych odmian jabłoni z punktu widzenia wykorzystania tego gatunku w urządzaniu łowisk leśnych
Preferences of roe deer to different varieties of apple from the point of view of managing the forest hunting grounds
Autorzy:
Nasiadka, P.
Bors, K.
Wajdzik, M.
Skubis, J.
Powiązania:
https://bibliotekanauki.pl/articles/989505.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lowiectwo
zwierzeta lowne
sarny
preferencje pokarmowe
preferencje zerowe
szkody lowieckie
lowiska lesne
baza pokarmowa
jablonie
odmiany roslin
dobor odmian
urzadzanie lowisk
capreolus capreolus
malus domestica
damage
orchard
browsing
Opis:
The results of the inventory of damage caused by roe deer in a 2−year−old apple orchard in central Poland permitted to evaluate the browsing intensity as well as the relationship between biometric characteristics of trees and browsing intensity. The research showed that damage caused by the roe deer was mainly caused by shoot browsing, then rubbing the velvet antlers against trees and bark stripping. In one winter, roe deer damaged 35% of the orchard by browsing even up to 100% shoots on an individual tree. Significant differences were found between the intensity of browsing the different varieties of apple trees. The largest damage was noted in the case of the Ligol variety (35% of shoots on average), while the smallest – for the Idared and Golden Delicious varieties (approximately 5% of shoots on average). Branching and tree height were not found to affect the level of damage. When establishing forest hunting grounds, the Ligol variety, eagerly browsed by roe deer, should be planted on browsing plots, while Idared and Golden Delicious varieties – in orchards designed for fruiting.
Źródło:
Sylwan; 2016, 160, 10; 837-845
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przydatność Emolu Plus BTX LA do ochrony sosny zwyczajnej przed zimowym zgryzaniem przez jeleniowate
The usefulness of repellent Emol Plus BTX LA in Scots pine saplings protection against winter browsing by deer
Autorzy:
Nasiadka, P.
Pudełko, M.
Umiński, M.
Powiązania:
https://bibliotekanauki.pl/articles/1023356.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
ochrona roslin
Emol Plus BTX LA
skutecznosc
ochrona lasu
sosna zwyczajna
lesnictwo
repelenty
Pinus sylvestris
drzewa lesne
emol
emol plus btx la
scots pine
pinus sylvestris
browsing
forest protection against wildlife
damage by widlife.
Opis:
The paper provides study results on the efficacy of Emol Plus BTX LA repellent used for the protection of Scots pine saplings against browsing by deer. Emol Plus BTX LA contains coarse−grained filler – calcium carbonate and denatonium benzoate (BTX) as active substance. The efficacy of both Emol Plus BTX LA and standard repellents were found to be high.
Źródło:
Sylwan; 2004, 148, 10; 59-66
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Odnowienie naturalne drzew w Puszczy Białowieskiej
Natural regeneration of trees in the Bialowieza Forest
Autorzy:
Brzeziecki, B.
Andrzejczyk, T.
Żybura, H.
Powiązania:
https://bibliotekanauki.pl/articles/985949.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Bialowieska
odnowienia naturalne
drzewa lesne
topola osika
Populus tremula
brzoza brodawkowata
Betula pendula
brzoza omszona
Betula pubescens
olsza czarna
Alnus glutinosa
sosna zwyczajna
Pinus sylvestris
dab szypulkowy
Quercus robur
jesion wyniosly
Fraxinus excelsior
klon pospolity
Acer platanoides
wiaz gorski
Ulmus glabra
swierk pospolity
Picea abies
lipa drobnolistna
Tilia cordata
grab pospolity
proces dorastania
ekosystemy lesne
dynamika lasu
active approach
deer browsing
long−term study
multifunctional forest management
natural recruitment
nature conservation
silvicultural treatment
strict protection
tree competition
tree diversity
Opis:
Since several years already, a massive infestation of bark beetle has taken place in the Białowieża Forest, decimating a local Norway spruce population. In consequence, many open areas appeared, practically deprived of trees and other forest vegetation. The existence of such areas has a very negative impact on multiple values of the Białowieża Forest: natural, social, economical and landscape−aesthetic values. The local forest administration prepared a strategy aimed at active restoration of diverse woodland communities typical for the Białowieża Forest in all places, where bark beetle infestation wiped up the spruce stands. Those plans were criticized by representatives of the environmental organizations who blamed the foresters for transforming the Białowieża Forest into ‘plantation’ and claiming that such measures are inconsistent with the existing forest management and protection plan. The postulate of environmentalists is that the recovery of woodland communities should proceed completely naturally. Taking into account the above mentioned controversies, in this paper we examine the issue of natural regeneration in the Białowieża Forest in detail. In particular, we try to determine to which extent this method of forest reproduction enables re−establishment of compositionally diverse woodland communities, distinguished by a high level of biological diversity and able to provide a wide range of commodities and benefits important for today’s society. Based on an extensive literature review we show that a combination of different (abiotic and biotic) factors, influencing establishment and subsequent growth of seedlings and saplings in the Białowieża Forest has long been strongly unfavorable for many tree species. In this regard, one should particularly emphasize the negative role of large herbivores, especially red deer, which is present in the Białowieża Forest since the end of 19th century, when it became a private hunting ground for Russian tzars. The devastating effect of deer browsing on natural regeneration is a well−documented phenomenon and widely recognized problem in the forestry practice. The fencing of young forest generation against game pressure is an indispensable measure, needed to secure the continuous existence of several tree species (first of all those palatable and vulnerable to browsing). Very strong arguments for an active approach to the described problem delivers also a long−term study on natural forest dynamics conducted since 1936. It shows that under conditions of strict protection the regeneration capacity of the Białowieża tree species is very variable. These differences lead to the compositional simplification and impoverishment of many tree stands, with numerous negative consequences for local biodiversity. We underline that an active management strategy is a basic prerequisite for maintaining a diverse character of the Białowieża stands and their ability to provide all important ecosystem services on a sustainable basis. Such a strategy should include, beside of the phase of establishment, also the subsequent developmental stages of new forest generations. The general goal of such a strategy should be to secure a possibly high diversity of tree composition and to enable the development of tree species representing a full range of life−history strategies and playing different successional roles: from typical pioneer species, through intermediate, to climax species.
Źródło:
Sylwan; 2018, 162, 11; 883-896
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-12 z 12

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