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Tytuł:
Tempo wzrostu jarzębiny (Sorbus aucuparia L.) a rozpad górnoreglowego drzewostanu świerkowego
The growth rate of rowan [Sorbus aucuparia L.] versus subalpine spruce stand break down
Autorzy:
Żywiec, M.
Powiązania:
https://bibliotekanauki.pl/articles/1012925.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
wzrost roslin
odnowienia lasu
Babia Gora
tempo wzrostu
drzewostany swierkowe
lasy gorskie
Sorbus aucuparia
zamieranie lasow
regiel gorny
lesnictwo
jarzab pospolity
luki drzewostanowe
babia góra national park
sorbus aucuparia l.
subalpine spruce forest
growth rate
stand breakdown
Opis:
The paper presents temporal relationships between the breakdown of tree stand in the subalpine spruce forest and the regeneration of rowan (Sorbus aucuparia L) as well as the rate of height growth of rowan stems. Rowans growing in a large gap recruited mostly from the seedling and sapling bank established under the living spruce stand before its breakdown. The rate of stem height growth was five times higher after the gap formation than under spruce stand. In spite of considerable age differences of rowans the variability in their final height after over 20 years of rapid growth was small.
Źródło:
Sylwan; 2008, 152, 04; 38-45
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TYROSINASE INHIBITORY AND ANTIOXIDANT ACTIVITY OF WILD ROSA CANINA L. AND SORBUS AUCUPARIA L. FRUIT EXTRACTS
Autorzy:
Stanković, Milica I.
Savić, Vesna L.
Živković, Jelena V.
Stanojević, Ljiljana P.
Tadić, Vanja M.
Arsić, Ivana A.
Powiązania:
https://bibliotekanauki.pl/articles/895312.pdf
Data publikacji:
2019-06-28
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
antioxidants
polyphenols
Rosa canina L
Sorbus aucuparia L
anti-tyrosinase
Opis:
In the present work, fruits from two plant species, Rosa canina L. and Sorbus aucuparia L., popular in traditional folk medicine in Serbia, were studied. The aim was to examine and compare the efficiency of the ultrasonic extraction with different solvents regarding physicochemical properties, polyphenolic profile of extracts, as well as their tyrosinase inhibitory and antioxidant activity. The polyphenols evaluation indicated that water was the best solvent for a thorough extraction of bioactive compounds from the R. canina fruits, while propylene glycol-water (45:55, v/v) was the most efficient regarding S. aucuparia fruits, followed by ethanol-water (7:3, v/v). Only flavonoids were more abundant in S. aucuparia fruit extracts. R. canina water extracts showed a higher antioxidant activity, using several in vitro tests with different working principles. However, S. aucuparia ultrasonic extracts with propylene glycol-water (45:55, v/v) demonstrated a higher potential concerning tyrosinase inhibitory and chelating activity. Therefore, these ultrasonic extracts, being great sources of natural anti-tyrosinase inhibitors and antioxidants, can be considered as promising candidates suitable for pharmaceutical application, as great sources of natural anti-tyrosinase inhibitors and antioxidants.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 3; 523-533
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Występowanie Phytophthora cactorum na jarząbie zwyczajnym (Sorbus aucuparia) w szkółkach leśnych
The occurrence of Phytophthora cactorum on rowan (Sorbus aucuparia) in forest nurseries
Autorzy:
Orlikowski, L.B.
Duda, B.
Oszako, T.
Powiązania:
https://bibliotekanauki.pl/articles/1023374.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
wystepowanie
grzyby
czynniki chorobotworcze
Phytophthora cactorum
szkolki lesne
Sorbus aucuparia
lesnictwo
jarzab pospolity
drzewa lesne
fitopatologia lesna
phytophthora spp.
inoculation
rowan
disease
stem necrosis
isolation
Opis:
Phytophthora cactorum was isolated from about half of the rowan seedlings taken from 2 nurseries. Additionally, Botrytis cinerea and Fusarium solani were found in diseased tissues. In laboratory trials, the pathogen colonized plants of the family Rosaceae, and most especially Prunus avium, Pyrus communis and Rosa canina, as well as Alnus glutinosa, Betula verrucosa and coniferous plants. In a greenhouse trial, isolates from rowan and rhododendron were found to cause necrosis of the stem base, with a rate of disease spread of about 1.3 mm/24 h.
Źródło:
Sylwan; 2004, 148, 10; 67-72
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gatunki Phytophthora jako czynniki zagrażające Sorbus aucuparia w Polsce
Phytophthora species as the causal threats of Sorbus aucuparia in Poland
Autorzy:
Orlikowski, L.
Ptaszek, M.
Powiązania:
https://bibliotekanauki.pl/articles/973850.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewa
jarzab pospolity
Sorbus aucuparia
zagrozenia roslin
zgnilizna korzeni i pedow
czynniki chorobotworcze
Phytophthora cactorum
izolaty grzybowe
patogenicznosc
kolonizacja
wystepowanie
phytophthora cactorum
p. citrophthora
occurrence
isolates
colonization
Opis:
Phytophthora cactorum and P. citrophthora were isolated from diseased plants of Sorbus aucuparia. P. cactorum was the dominant species on seedlings and 3−15 years old trees, while P. citrophthora was isolated only from 3−6 years old trees. Isolates of both species obtained from 10 host plants colonized stem fragments and leaf blades of S. aucuparia and S. intermedia. In greenhouse trials only isolates from Pinus sylvestris and Viola wittockiana did not cause root and stem base rot symptoms of rowan seedlings.
Źródło:
Sylwan; 2011, 155, 06; 421-428
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zakłócenia wzrostu drzew w borze górnoreglowym spowodowane przez lawiny śnieżne - studium przypadku z Doliny Rybiego Potoku, Tatry Wysokie
Growth disturbances in subalpine forest caused by the snow avalanche - ase study form the Rybi Potok Valley, High Tatras
Autorzy:
Lempa, M.
Kaczka, R.J.
Spyt, B.
Guzik, P.
Guzowski, M.
Raczkowska, Z.
Powiązania:
https://bibliotekanauki.pl/articles/881783.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
bor gornoreglowy
drzewa
swierk pozpolity
Picea abies
sosna limba
Pinus cembra
jarzab pospolity
Sorbus aucuparia
przyrost drzew
przyrosty roczne
lawiny sniezne
Urwany Zleb
Tatry Wysokie
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2016, 18, 3[48]
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wymagania troficzne wybranych gatunków krzewiastych występujących w lasach
The trophic requirements of selected underwood species occurring in forests
Autorzy:
Lasota, J.
Błońska, E.
Wanic, T.
Zwydak, M.
Powiązania:
https://bibliotekanauki.pl/articles/1317349.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
krzewy lesne
jarzab pospolity
Sorbus aucuparia
kruszyna pospolita
Frangula alnus
leszczyna pospolita
Corylus avellana
jalowiec pospolity
Juniperus communis
czeremcha zwyczajna
Padus avium
trzmielina zwyczajna
Euonymus europaeus
bez czarny
Sambucus nigra
wymagania glebowe
preferencje siedliskowe
forest shrubs
soil requirements
forest sites
plant communities
Opis:
The subject of this study were soil requirements of common woody shrubs, which may be part of the forest understory (Sorbus aucuparia L., Frangula alnus Mill., Corylus avellana L., Juniperus communis L., Padus avium Mill., Euonymus europaea L., Sambucus nigra L.). We focused on phytocenoses in the vicinity of natural forests in reserves and national parks of Polish lowlands and defined optimal types and subtypes of soil with trophic variations for each underwood species. The range of trophism for each species of shrub was determined using specific physicochemical properties of the soils, while soil quality was assessed using the Soil Site Index (SIG) (Bro¿ek et al. 2011). The ecological requirements of the before-mentioned underwood species were linked with forest typology as well as natural vegetation and they showed different soil requirements. Here we report significant differences in particle size and dynamics of organic matter decomposition in soils associated with these underwood species.
Źródło:
Leśne Prace Badawcze; 2014, 75, 2; 181-191
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of the surface of the epidermis in floral nectaries and the receptacle of mountain ash [Sorbus aucuparia L.]
Charakterystyka powierzchni epidermy nektarnikow kwiatowych oraz dna kwiatowego jarzebu pospolitego [Sorbus aucuparia L.]
Autorzy:
Konarska, A
Powiązania:
https://bibliotekanauki.pl/articles/26989.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
epidermis surface
floral nectary
stoma
nectary
cuticular epithelium
botany
Sorbus aucuparia
mountain ash
cuticle
Opis:
The structure of receptacular surfaces of floral nectaries at two flowering stages and the structure of the outer surface of the receptacle of Sorbus aucuparia were investigated using scanning electron microscopy. Changes in the development of the cuticular epithelium of the nectary epidermis and differences in the degree of aperture of stomata were observed. Increased undulation of the gland surface was found during flower development. Numerous stomata were situated slightly below the level of epidermal cells of the nectary. At the pollination stage, open pores or pores surrounded by the cuticular epithelium were observed, as well as covered by dried secretion. Dried nectar in the form of patches was also visible on the surface of the gland. Stomata of the outer surface of the receptacle were located on protrusions and surrounded by the cuticular epithelium.
Strukturę powierzchni receptakularnych nektarników kwiatowych w dwu fazach kwitnienia oraz strukturę zewnętrznej powierzchni dna kwiatowego Sorbus aucuparia badano w skaningowym mikroskopie elektronowym. Zaobserwowano zmiany w rozwoju nabłonka kutykularnego epidermy nektarnika oraz różnice w stopniu rozwarcia aparatów szparkowych. W czasie rozwoju kwiatów stwierdzono wzrost pofałdowania powierzchni gruczołu. Liczne aparaty szaprkowe usytuowane były nieznacznie poniżej poziomu komórek skórki nektarnika. W stadium pylenia obserwowano otwarte szparki lub otoczone nabłonkiem kutykularnym, a także osłonięte zaschnięta wydzieliną. Zaschnięty nektar w postaci płatów był widoczny także na powierzchni gruczołu. Aparaty szparkowe zewnętrznej powierzchni dna kwiatowego zlokalizowane były na wzniesieniach i otoczone nabłonkiem kutykularnym.
Źródło:
Acta Agrobotanica; 2007, 60, 2
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jarząb, jarzębina i jarzębiak
Autorzy:
Karczmarczuk, R.
Powiązania:
https://bibliotekanauki.pl/articles/845948.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Tematy:
dendrologia
drzewa
jarzab pospolity
Sorbus aucuparia
jarzab maczny
Sorbus aria
jarzab nieszpulkowy
Sorbus chamaemespilus
jarzab brekinia
Sorbus torminalis
jarzab szwedzki
Sorbus intermedia
jarzab domowy
Sorbus domestica
owoce
jarzebiny
wykorzystanie
wartosc odzywcza
Źródło:
Wszechświat; 2011, 112, 07-09
0043-9592
Pojawia się w:
Wszechświat
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stan wielogatunkowego lasu naturalnego (Abies, Fagus, Picea) regla dolnego w rezerwacie Oszast na tle monokultur świerkowych w Beskidzie Żywieckim i Beskidzie Śląskim
A comparison of lower montane natural forest (Abies, Fagus, Picea) in Oszast Reserve and spruce monocultures in the Zywiecki Beskid and Slaski Beskid
Autorzy:
Jaworski, A.
Pach, M.
Powiązania:
https://bibliotekanauki.pl/articles/1316186.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
lasy gorskie
regiel dolny
rezerwaty przyrody
rezerwat Oszast
las naturalny
drzewostany wielogatunkowe
sklad gatunkowy
swierk pospolity
Picea abies
buk zwyczajny
Fagus sylvatica
jodla pospolita
Abies alba
klon jawor
Acer pseudoplatanus
jarzab pospolity
Sorbus aucuparia
zmiany skladu gatunkowego
zasobnosc drzewostanu
struktura drzewostanu
rozklad piersnic
smiertelnosc
odnowienia lasu
stand volume
dbh distribution
mortality
regeneration
Opis:
The aim of this research was to find out what changes occurred between 1999-2009 in Oszast reserve in the volume, species composition and diameter at breast height (dbh) distribution of the forest stand, and the number and height of regeneration. The objective was to determine what would be condition of these managed lower montane multispecies forest stands (Swiss irregular shelterwood method or selection cuttings) and what role spruce would play in them if they have not been replaced by spruce monocultures. The research was conducted on three permanent circular sample plots (s.p.), each had size of 1/3 ha. Over 10 years, standing volume of the forest stand increased on s.p. 1 (from around 562 m3 ha-1 to 649 m3 ha-1) and s.p. 3. (from 653 m3 ha-1 to 660 m3 ha-1), while decreased on s.p. 2. (from 421 m3 ha-1 to 378 m3 ha-1). The species composition, defined on the basis of volume share (averaged for the three s.p. jointly), did not undergo consistent changes. However, the relative dominance of beech over spruce was determined based on tree numbers. The average spruce mortality (averaged from three s.p.) did not exceed 10% and was slightly higher than that of beech (6%), and lower than fir mortality (15%). Nevertheless, spruce did not show any symptoms of dieback. The reasons behind its mortality were fallen trees and windbreaks. In regeneration, on the whole, beech or sycamore predominated, and the proportion of spruce and fir was small. In the future spruce and fir may even decrease further by competitive ability of dynamically regenerating beech. Abandonment of forest management to promote greater diversity of species, may favour the formation of beech monocultures, or forest stands dominated by beech, everywhere that beech is already present or will be introduced. The maintenance of stable, multispecies forest stands, with co-dominant fir, beech and spruce of native origin, requires natural or artificial regeneration of spruce and fir, manipulated to restore fir up to about 30%, and reduce spruce down to about 40%. This would be possible through the use of the Swiss irregular shelterwood method and selection system, and by continuous tending of regeneration.
Źródło:
Leśne Prace Badawcze; 2014, 75, 1; 13-23
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zawartość węgla w biomasie pospolitych gatunków krzewów podszycia leśnego
Carbon concentration in the biomass of common species of understory shrubs
Autorzy:
Jagodziński, A.M.
Jarosiewicz, G.
Karolewski, P.
Oleksyn, J.
Powiązania:
https://bibliotekanauki.pl/articles/1008422.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
pietro lesne
podszyt
krzewy lesne
leszczyna pospolita
Corylus avellana
czeremcha zwyczajna
Prunus padus
czeremcha amerykanska
Prunus serotina
kruszyna pospolita
Frangula alnus
bez czarny
Sambucus nigra
deren swidwa
Cornus sanguinea
jarzab pospolity
Sorbus aucuparia
biomasa
zawartosc wegla
carbon concentration
shrubs
biomass components
Opis:
Experimental data on carbon concentration in woody plant species biomass are very scarce and value of 50% of dry biomass is widely accepted in carbon storage modeling. On the other hand, some studies have proved that the carbon concentration in woody species biomass is variable and depends on the component. Thus, the main goal of the study was to determine carbon concentration in biomass of 7 understory shrub species (basing on 282 individuals): Corylus avellana, Prunus padus, P. serotina, Frangula alnus, Sambucus nigra, Cornus sanguinea and Sorbus aucuparia as well as to analyze variability of carbon concentration among shrub species and biomass components. Carbon concentration was analyzed for leaves, fruits, branches, stemwood, stembark, coarse and fine roots. Our study revealed that the mean carbon concentration in biomass of all species studied was 47.7%. We found statistically significant differences in carbon concentration among the shrub species studied in all biomass components. The mean value for particular species was as follows: Prunus serotina – 47.5%, P. padus – 47.6%, Frangula alnus – 47.7%, Sambucus nigra – 47.7%, Corylus avellana – 47.8%, Cornus sanguinea – 47.8% and Sorbus aucuparia – 47.8%. Additionally, we found statistically significant differences in carbon concentration among biomass components within the species studied. The mean carbon concentration in fruit biomass was 46.2%, in fine roots – 47.0%, in leaves – 47.2%, in coarse roots – 47.7%, in branches – 47.9%, in stemwood – 48.5% and in stembark – 48.6%. The variability of carbon concentration in fruit, branches and leaves biomass was higher than in the remaining biomass components. The variability of carbon concentration in biomass of woody species should be considered in carbon storage modeling in forest ecosystems.
Źródło:
Sylwan; 2012, 156, 09; 650-662
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial structure of a natural mixed topodeme of subalpine Sorbus taxa
Autorzy:
Gomory, D
Krajmerova, D.
Powiązania:
https://bibliotekanauki.pl/articles/59154.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
spatial structure
genetic variation
Sorbus
subalpine plant
apomixis
microsatellite
dispersal
hybrid
Sorbus chamaemespilus
Sorbus aria
Sorbus aucuparia
reproductive system
Opis:
Spatial distribution and genetic variation of a population of Sorbus chamaemespilus (L.) Crantz and putative hybrids between S. chamaemespilus, S. aria and S. aucuparia growing in the nature reserve Skalnä Alpa (central Slovakia) were studied. The analysis of spatial patterns using Ripley's K-function revealed a significant clustering of the adults of both S. chamaemespilus and hybrid taxa at distances up to ~15 m and a strong affinity between both taxonomical groups, indicating similar ecological requirements. Bivariate point-pattern analysis considering cardinal direction showed that juvenile individuals of S. chamaemespilus are clustered around the adults up to the distance of ~2 m, whereas in hybrid taxa with larger and more dense crowns, juveniles are clustered at distances more than ~3 m from the adults. The analysis of genetic variation in a subset of adult shrubs using 4 nuclear microsatellite loci revealed that unlike expected, there was no variation in S. chamaemespilus but several genotypes were found in the group of hybrid taxa. Implications for the reproduction system and conservation of the investigated taxa are discussed.
Źródło:
Acta Societatis Botanicorum Poloniae; 2008, 77, 4; 305-311
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obce gatunki drzewiaste w południowym kompleksie Puszczy Niepołomickiej
Alien woody species in the southern complex of the Niepolomice Forest
Autorzy:
Gazda, A.
Fijała, M.
Powiązania:
https://bibliotekanauki.pl/articles/1009449.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Niepolomicka
drzewa lesne
gatunki obce
czeremcha amerykanska
Prunus serotina
dab czerwony
Quercus rubra
gatunki lasotworcze
jarzab pospolity
Sorbus aucuparia
dab szypulkowy
Quercus robur
brzoza brodawkowata
Betula pendula
sosna zwyczajna
Pinus sylvestris
czeremcha zwyczajna
Prunus padus
topola osika
Populus tremula
odnowienia naturalne
alien species
invasive species
niepołomice forest
poland
Opis:
Managed forests are likely to be exposed to uncontrolled, spontaneous spread of alien/invasive species as a result of a frequently conscious introduction of alien species to forests in order to achieve economic gains. Unfortunately, we still lack data on the intensity of such invasions to forests on a larger scale. The aim of the paper is to provide a detailed qualitative and quantitative description of the existing regeneration of tree species, particularly the alien ones, and to determine the impact of selected factors on the regeneration of introduced species. The research was carried out in a mixed coniferous forest habitat in the "Uroczysko Główne". Particular focus was on the regeneration of alien species. Eight tree species were found to be regenerating naturally on the examined plots of which two were alien species. The scale of occurrence of alien species in comparison with native ones, particularly the black cherry, may now become a problem. Alien species accounted for nearly 25% of all tree species regeneration in the examined area and were noted in over half of the plots. It can therefore be said that the conditions occurring in the southern complex of the Niepołomice Forest have a great impact on tree regeneration and may favour spontaneous spread of alien species. The research helped to quantified and qualified the intensity of forest colonisation by the two most frequently occurring alien species.
Źródło:
Sylwan; 2010, 154, 05; 333-340
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rozprzestrzenianie się zarośli drzewiastych w piętrze połonin Bieszczad Zachodnich
Expansion of brushwood in the subalpine zone of the Western Bieszczady Mts.
Autorzy:
Durak, T.
Żywiec, M.
Ortyl, B.
Powiązania:
https://bibliotekanauki.pl/articles/993087.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Bieszczady Zachodnie
rzeka Mala Rawka
Wielka Rawka
poloniny
zarosla
drzewa
jarzab pospolity
Sorbus aucuparia
olsza zielona
Alnus viridis
rozprzestrzenianie sie roslin
abandoned grasslands
land use
sorbus aucuparia
succession
eastern carpathians
Opis:
Complete discontinuation of agricultural use of subalpine meadows in the Western Bieszczady, which dates back to 1940s, started the process of their overgrowing with brushwood. Based on available cartographic material the following features were analysed: changes in the area occupied by brushwood on Mała Rawka and Wielka Rawka subalpine meadows, their growth rate and the relationship between the overgrowth process and the previous manner of agricultural use as well as topographic conditions throughout last 30 years. In that period the brushwood on Mała Rawka meadow (in the past the area had been reaped) was characterised by a small initial area (in the 1980s), a significant growth rate of the area and its relation to the slopes exposed to N, NE and E, the zone adjacent to the timber line and steeper slopes. In 1980 on Wielka Rawka meadow (previously used as a pasture) a high share of brushwood was found (about 25% of the meadow area), whose distribution was related only to the slopes of N, NE and E exposure. In subsequent years the growth rate was low. The results indicate a progressing process of overgrowing of subalpine meadows by brushwood. The brushwood expansion is related to discontinuation of agricultural use of the meadows and its course depends on the earlier regime of cultivation. The pattern of brushwood distribution also depends on altitude, exposure and the grade of slopes. Those relations result from the expansion of the rowan tree, dominating in the brushwood, also climatic conditions and accessibility of the ground.
Źródło:
Sylwan; 2013, 157, 02; 130-138
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of air pollutants in an urban agglomeration in Poland made by the biomonitoring of trees
Autorzy:
Chwil, S.
Kozlowska-Strawska, J.
Tkaczyk, P.
Chwil, P.
Matraszek, R.
Powiązania:
https://bibliotekanauki.pl/articles/961597.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
assessment
air pollutant
environment pollution
heavy metal
nitrogen
sulphur
urban agglomeration
Polska
tree
leaf
Populus tremula
Sorbus aucuparia
Tilia cordata
biomonitoring
Opis:
In 1970-2000, the state of the natural environment in many regions of Poland was unsatisfactory. This situation has been improving since the integration with the European Union, mainly owing to the reduction of emissions of sulphur and nitrogen oxides. The present study included three tree species: rowan (Sorbus aucuparia L. em. Hedl.), small-leaved lime (Tilia cordata Mill.), and aspen (Populus tremula L.). The trees grew in a pollution free environment (Huszlew) and in an urban agglomeration (Lublin). The aim of this research was to make comparative observations of the structure of leaves in relation to the content of lead, zinc, copper, nitrogen and sulphur determined in these organs. The N/S ratio in the leaves was accepted as an indicator of proper metabolic processes. Observations of leaves were made with using light microscopy and the scanning electron microscopy (SEM) technique. The content of heavy metals in leaves was determined by atomic absorption spectrometry (AAS) after dry mineralization. Total sulphur was determined by the turbidimetric method, while nitrogen by the Kjeldahl method after mineralization in sulphuric acid. When influenced by polluted air, the epidermis of the examined leaves was composed of smaller cells with higher stomatal density per unit area and had a lower number of open pores compared to the epidermis of the leaves developed in a clean environment. Among the species investigated, aspen was characterized by the highest ability to bioaccumulate heavy metals in its leaves. Among the elements determined only the Zn content exceeded the permissible limit, whereas Pb and Cu were found to occur in the range of values considered to be optimal. The dominant share of lead in suspended dust caused changes in the epidermis of leaves, which led to disorders in plant water relations.
Źródło:
Journal of Elementology; 2015, 20, 4
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 20

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