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Wyszukujesz frazę "coniferous" wg kryterium: Temat


Tytuł:
Changes in antioxidant enzyme activities in Pinus sylvestris and Larix decidua seedlings after Melolontha melolontha attack
Autorzy:
Skwarek, M.
Patykowski, J.
Witczak, A.
Tematy:
coniferous species
defense
cockchafer
superoxide dismutase
peroxidases
Pokaż więcej
Wydawca:
Instytut Badawczy Leśnictwa
Powiązania:
https://bibliotekanauki.pl/articles/1292552.pdf  Link otwiera się w nowym oknie
Opis:
Plants are constantly exposed to the influence of biotic and abiotic stress factors that significantly affect the induction of resistance responses. Biotic factors include bacteria, fungi and insects such as the common cockchafer (Melolontha melolontha) that harm many tree species, including pine and larch. The adult beetles damage needles, while the larvae (grubs) feed on roots. The aim of the experiment was to determine how plants cope with the damage caused by these insects. The activity of antioxidant enzymes such as peroxidase (POD) and superoxide dismutase (SOD) were determined three and six weeks after the insect-induced damage and the results show that the peroxidase activity, as measured with guaiacol (GPOD), was higher in the damaged roots of larch. The POD activity measured with syringaldazine (SPOD) was slightly higher in damaged pine needles as well as pine roots. SOD activity was higher in the damaged roots of both species as compared to the needles. It is believed that changes in the activity of POD and SOD as well as the presence of another form of SOD in the roots of larch, indicate direct involvement of these enzymes in the plants’ response to damage caused by M. melolontha.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dokumentacja Geograficzna 1987 z. 3
Lasy iglaste na obszarze Polski = Coniferous forests in Poland
Współwytwórcy:
Breymeyer, Alicja (1932– ). Red.
Wydawca:
Zakład Narodowy im. Ossolińskich - Wydaw. Polskiej Akademii Nauk
IGiPZ PAN
Powiązania:
Dokumentacja Geograficzna
Opis:
Bibliogr.
Sum. eng, rus
111 s., [1] k. tabl. : mapy, wykr. ; 24 cm
111 pp., [1] k. tabl. : maps ; 24 cm
Bibliogr. przy rozdz
Streszcz. ang. i ros.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Changes in antioxidant enzyme activities in Pinus sylvestris and Larix decidua seedlings after Melolontha melolontha attack
Autorzy:
Witczak, Adrian
Skwarek, Monika
Patykowski, Jacek
Wydawca:
Instytut Badawczy Leśnictwa (Forest Research Institute), Sękocin Stary, Poland
Opis:
Plants are constantly exposed to the influence of biotic and abiotic stress factors that significantly affect the induction of resistance responses. Biotic factors include bacteria, fungi and insects such as the common cockchafer (Melolontha melolontha) that harm many tree species, including pine and larch. The adult beetles damage needles, while the larvae (grubs) feed on roots. The aim of the experiment was to determine how plants cope with the damage caused by these insects. The activity of antioxidant enzymes such as peroxidase (POD) and superoxide dismutase (SOD) were determined three and six weeks after the insect-induced damage and the results show that the peroxidase activity, as measured with guaiacol (GPOD), was higher in the damaged roots of larch. The POD activity measured with syringaldazine (SPOD) was slightly higher in damaged pine needles as well as pine roots. SOD activity was higher in the damaged roots of both species as compared to the needles. It is believed that changes in the activity of POD and SOD as well as the presence of another form of SOD in the roots of larch, indicate direct involvement of these enzymes in the plants’ response to damage caused by M. melolontha.
Dostawca treści:
Repozytorium Centrum Otwartej Nauki
Artykuł
Tytuł:
Określenie intensywności przemian biochemicznych gleb w zależności od składu gatunkowego drzewostanu
Denoting the intensity of soil biochemical transition according to stand species composition
Autorzy:
Olszowska, Grażyna
Wydawca:
Forest Research Institute (Instytut Badawczy Leśnictwa), Sękocin Stary, Poland
Cytata wydawnicza:
Olszowska, G. (2018). Denoting the intensity of soil biochemical transition according to stand species composition, Forest Research Papers, 79(4), 327-334. doi: https://doi.org/10.2478/frp-2018-0033
Opis:
The aim of this study was to denote biochemical soil activity in pure Scots pine, Norway spruce, silver fir, European larch, European beech and oak stands as well as in mixed fir-pine, beech-pine and fir-beech forests growing on a fertile fresh mixed deciduous site. The field work was carried out in the following Forest Districts: Nowe Ramuki (Mazursko-Podlaska forest region), Płońsk, Jabłonna, Brzeziny Siedlce, Grójec (Mazowiecko-Podlaska forest region) and Skarżysko, Ostrowiec and Marcule (Małopolska forest region). In 2015–2017, sample plots were assigned and chemical as well as soil enzyme activity measurements were made in each forest stand. Samples were taken from the organic (O) and humus (A) layers and for both the acidity (in 1M KCl), content of nitrogen, carbon, sum of exchangeable alkaline cations and hydrolytic acidity were determined. The investigation of soil enzymes included the measurements of urease, asparginase, acid phosphatase and dehydrogenase activity. Coniferous trees, especially fir, spruce or larch, and mixed fir-beech and pine-beech stands were observed to have a very positive influence on the biochemical soil properties. The highest activity of dehydrogenase was observed in soils of spruce and mixed fir-beech stands, whereas it was lower in soils of beech and pine stands, and the lowest in oak stands. Oak stands were furthermore characterized by the lowest soil acidity, lowest concentration of alkaline cations, the lowest nitrogen and carbon content as well as the smallest C/N ratio. In overall, soil enzyme activity showed a significant correlation with chemical soil parameters.
Dostawca treści:
Repozytorium Centrum Otwartej Nauki
Artykuł
Tytuł:
Wyniki inwentaryzacji włochatki Aegolius funereus w kompleksie leśnym w zachodniej części Nadleśnictwa Przasnysz
Results of the survey of the boreal owl aegolius funereus in the forest complex in the wes tern part of the Przasnysz forest district in 2013-2015
Autorzy:
Szczypiński, P.
Tematy:
birds of coniferous forests
forest owls
Mława Heights
owl survey
Pokaż więcej
Wydawca:
Mazowiecko-Świętokrzyskie Towarzystwo Ornitologiczne
Powiązania:
https://bibliotekanauki.pl/articles/2090120.pdf  Link otwiera się w nowym oknie
Opis:
In 2013-2015 the survey of the Boreal Owl Aegolius funereus was carried out in a large forest complex in the Przasnysz Forest District within the Mława Heights in the North Mazovian Lowland (N53.232891, E20.710468). Each year all tree stands older than 80 years were controlled within the entire forest complex covering 90 km2. In different seasons, from 4 to 6 territorial males were detected. All sites were in the northern part of the complex in the so-called Oak Mountains. The number of breeding pairs was not estimated.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epiphytic lichens of Quercus robur in Wigry National Park (NE Poland)
Autorzy:
Fałtynowicz, W.
Kowalewska, A.
Fałtynowicz, H.
Piegdoń, A.
Patejuk, K.
Górski, P.
Halama, M.
Staniaszek-Kik, M.
Tematy:
epiphytic lichens
Quercus robur
NE Poland
coniferous and deciduous forests
Pokaż więcej
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Powiązania:
https://bibliotekanauki.pl/articles/2130810.pdf  Link otwiera się w nowym oknie
Opis:
The study covered diversity of lichens on bark of Quercus robur in rich deciduous forest Tilio-Carpinetum and Scotch pine forest Serratulo-Pinetum in Wigry National Park (NE Poland). Ninety eight taxa of lichenized fungi have been recorded, which accounts for over 30% of lichens biota of the Park. Greater diversity of species has been noticed on oaks grown in Tilio-Carpinetum phytocenosis. Among the found lichens, 14 are protected by law and 18 are threatened in Poland. Moreover, 10 new species for Wigry National Park lichen biota have been found.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gemi – a Possible Tool for Identification of Disturbances in Coniferous Forests in Pernik Povince (Western Bulgaria)
Autorzy:
Grigorov, Borislav
Tematy:
remote sensing
forestry
deforestation
coniferous forests
teledetekcja
leśnictwo
wylesianie
las iglasty
Pokaż więcej
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:
https://bibliotekanauki.pl/articles/27314820.pdf  Link otwiera się w nowym oknie
Opis:
The Global Environmental Monitoring Index (GEMI) represents a vegetation index that allows for making analysis. The index is not that sensitive to atmospheric effects. GEMI has been applied for the investigation of disruptions in the coniferous forests in Pernik Province, which is situated in the western parts of Bulgaria. The basic data comes from Landsat 8 and Corine Land Cover. The results of the study show that the index performs well in the distinguishment of broad-leaved vegetation from the coniferous one. At the same time the index doesn’t always provide satisfying results when it comes to deforestation. In conclusion GEMI provides good results, yet it’s use should be controlled and supported by other vegetation indices.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wood density in European larch (Larix decidua Mill.) from selected provenances grown at the Siemianice Forest Experimental Station
Autorzy:
Szaban, Jarosław
Kowalkowski, Wojciech
Łacka, Agnieszka
Karaszewski, Zbigniew
Tematy:
physical properties of wood
genetic variability
coniferous wood
sapwood
hardwood
provenance
Pokaż więcej
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Powiązania:
https://bibliotekanauki.pl/articles/2010792.pdf  Link otwiera się w nowym oknie
Opis:
The purpose of this study was to determine variation in the density of wood from different provenances, growing under the same soil and climate conditions. Samples were obtained from an experimental site located at the Siemianice Forest Experimental Station. We analyzed larch wood samples from trees aged 48 years, collected from six different provenances in Poland. Diameter at breast height (DBH) and tree height were used to calculate the parameters for sample trees, from which a 70 cm segment was cut, from breast height upwards (up to 2 m of tree height). Samples with dimensions 20 × 20 × 30 mm were obtained from the material. Sample volume was determined by stereometry. Relative density was determined for 890 samples. The highest wood density was found in trees from Czerniejewo, and the lowest in trees from Rawa Mazowiecka. Analysis of variance, including the mean wood density values of trees, did not demonstrate significant differences between provenances in terms of this characteristic. Mean relative density was higher in larch wood samples from the heartwood zone. The density of samples cut closer to the bark was lower, as the value was affected by the large content of sapwood. A relation was found between the provenances from which the study material was sourced and the relative density of wood.
Dostawca treści:
Biblioteka Nauki
Artykuł

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