Wszystkie pola: Nadlesnictwo Wolow - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Ocena zdrowotności dębu na podstawie stopnia ubytku aparatu asymilacyjnego wybranych drzewostanów dębowych Nadleśnictwa Wołów
Assessment of the health condition of oak on the basis of the degree of assimilation apparatus losses in oak stands of the Wolow Forest District
Autorzy:: Szewczyk, W.
Czeryba, Z.
Powiązania:: https://bibliotekanauki.pl/articles/1009254.pdf
Data publikacji:: 2010
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
Nadlesnictwo Wolow
drzewostany debowe
drzewa lesne
dab
Quercus
stan zdrowotny drzew
aparat asymilacyjny
defoliacja
stopien defoliacji
oak
decline
defoliation
wołów forest district
Opis:: Distinct symptoms of oak decline, which occurred in the year 2004 on the area of the Wołów Forest District, prompted to determine the health condition of this species stands according to the European criteria i.e. on the basis of the defoliation degree. Oak stands in that area are exposed to the activity the Legnicko−Głogowski Copper Industry Region. Besides, the lowering of Odra riverbed, which in that area reaches 3 m, also exerts a significant effect on the functioning of the ecosystems. An estimation of the assimilation apparatus losses was carried out at the turn of July and August in 2005 and 2007 on the basis of an atlas elaborated by Borecki and Kęczyński [1992]. Data obtained in this way permitted to classify each tree into four defoliation classes from 0 to 3. In case of a dead tree, it was classified into the fifth class encoded as 4. In the first year of observation, the highest frequency (35.0%) was observed in defoliation class #2 i.e. in stands with medium damages. Class #1 included 33.6% of trees. The assessment was repeated two years later. The number of trees without defoliation symptoms decreased four times, while the number of trees with a strong defoliation and of dead trees increased.
Źródło:: Sylwan; 2010, 154, 02; 100-106
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Gatunki Phytophthora i Pythium w glebie i w korzeniach dębu szypułkowego na terenach popowodziowych w Nadleśnictwie Wołów
Phytophthora and Pythium species in soils and in roots of the pedunculate oaks in periodically flooded areas in Wolow Forest District
Autorzy:: Kwaśna, H.
Szewczyk, W.
Behnke-Borowczyk, J.
Powiązania:: https://bibliotekanauki.pl/articles/989782.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
tereny pokleskowe
tereny popowodziowe
drzewostany debowe
drzewa lesne
dab szypulkowy
Quercus robur
korzenie
gleby lesne
grzyby
Phytophthora
Phytium
wystepowanie
Nadlesnictwo Wolow
pedunculate oak
fungi
globisporangium
oomycota
flood
phytophthora
pythium
Opis:: Phytophthora and Pythium species (Oomycota) are known to be serious pathogens of forest trees. Little is known, however, about their presence in Polish oak forests and their role in the oak decline, especially in the flooded areas. The aim of this study was (1) to detect and compare populations of microorganisms from Oomycota and fungi in roots and soil of healthy and declining pedunculate 30−126 years old oak stands, which had been flooded by the Odra River for three months in 1997 and one month in 2010, (2) to demonstrate the relationship between different chemical factors of soil and the occurrence of microorganisms, and (3) to assess the contribution of Oomycota to oak decline. Study was carried out in Wołów Forest District (south−western Poland). Microorganisms were isolated from fine (1−5 mm in diameter) roots and non−rhizosphere soil collected from 0−50 cm horizon. Isolation procedure from roots included surface sterilization and plating the root segments on the nutrient agar. An oak leaf baiting method was used for isolation of Oomycota from soil. Identification of microorganisms was based on morphology and sequencing of the ITS1/2 rDNA. Oomycota was represented by: Globisporangium, Phytophthora and Pythium and fungi mostly by: Aspergillus, Chaetosphaeria, Cylindrocarpon, Mortierella, Mucor, Penicillium, Trichoderma and Umbelopsis. Globisporangium attrantheridium (syn. Pythium attrantheridium) occurred locally and was found in roots of only one flooded oak. This is the first record of this species on oak and in Poland. G. intermedium, P. gibbosa/P. gregata, P. plurivora and Pythium sp. were found in soil of flooded and non−flooded (control) oak stands. The organisms occurred in podzolized brown soils, brown alluvial soils and gley soils that had most nitrogen (21−60 mg/kg), various amounts of calcium (61.1−347.6 mg/100g) and moderate acidity (pH=3.85−4.2). There was often a significant association between exposure to flood and the health status of oak trees assessed by the scale of defoliation. Oomycota seemed to be only moderately associated with increased tree defoliation as a symptom of oak decline.
Źródło:: Sylwan; 2015, 159, 07; 531-539
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Ocena stopnia uszkodzenia liści drzewostanów dębowych Nadleśnictwa Wołów dotkniętych klęską powodzi
Assessment of leaf damage in oak stands in the flood-affected Wolow Forest Division
Autorzy:: Kuzmiński, R.
Szewczyk, W.
Korczyński, I.
Łakomy, P.
Powiązania:: https://bibliotekanauki.pl/articles/1311485.pdf
Data publikacji:: 2015
Wydawca:: Instytut Badawczy Leśnictwa
Tematy:: lesnictwo
tereny pokleskowe
tereny popowodziowe
drzewostany debowe
drzewa lesne
dab
Quercus
defoliacja
liscie
uszkodzenia lisci
szkodniki roslin
owady
Nadlesnictwo Wolow
flood
defoliation
Wołów Forest Division
oak die-back
pest insects
oak stands
Opis:: This study examines the effect of flood on oak stands in the Wołów Forest Division by assessing the loss of leaf area due to insect feeding as determined in laboratory analyses of samples collected from standing trees. We compared stands, in which water stagnated for at least one month and stands with no water stagnation. It was found that the mean damage to the carbon assimilating organs of stands with stagnating water was lowered by approximately 6% compared to stands that were not affected by flood. Thus, no definite effect of flood contributing to losses of carbon assimilating organs in oak trees could be shown.
Źródło:: Leśne Prace Badawcze; 2015, 76, 3; 297-303
1732-9442
2082-8926
Pojawia się w:: Leśne Prace Badawcze
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Występowanie Erysiphe alphitoides w drzewostanach dębowych dotkniętych klęską powodzi
Occurence of Erysiphe alphitoides in oak stands affected by flood disaster
Autorzy:: Szewczyk, W.
Kumiński, R.
Mańka, M.
Kwaśna, H.
Łakomy, P.
Baranowska-Wasilewska, M.
Behnke-Borowczyk, J.
Powiązania:: https://bibliotekanauki.pl/articles/1312378.pdf
Data publikacji:: 2015
Wydawca:: Instytut Badawczy Leśnictwa
Tematy:: lesnictwo
drzewostany debowe
drzewostany pokleskowe
drzewostany popowodziowe
dab szypulkowy
Quercus robur
choroby aparatu asymilacyjnego
maczniak prawdziwy debu
Erysiphe alphitoides
wystepowanie
defoliacja
zamieranie drzew
Nadlesnictwo Wolow
defoliation
branch tip withering
oak decline
Forest District Wołów
Opis:: Pedunculate oak (Quercus robur L.) is the most valuable deciduous tree species in Poland. For almost 30 years, an oak decline resulting from stress factors leading to a decrease of tree vitality in the long-term has been observed. The aim of the present study was to determine the proportion of leaves infected by the fungus Erysiphe alphitoides, the cause of powdery mildew, in post-flood oak stands situated in the Forest District Wołów (51°32’N, 16°62’E) as well as to evaluate effects of powdery mildew with respect to the oak decline. In order to record the powdery mildew incidence, we selected three trees in each of the ten investigated oak stands, and 200 leaves were collected from the upper part of the crowns. The percentage of infected leaves as well as the reduction of carbon assimilation capacity was assessed. Furthermore, we evaluated the average reduction of carbon assimilation capacity and the percentage of withering branch tips in 25 adjacent trees. Incidences of powdery mildew were observed in seven out of the ten stands. The maximum tree damage did not exceed 22% leaf infection and mean defoliation within the study areas ranged from 18% to 61.4%. Non-withering branch tips were observed in one post-flood area as well as in one area situated outside the flooded region. Within the remaining areas studied, the average proportion of withering branch tips ranged from 0.4% to 13.8%. Statistical analyses showed that differences between the investigated stands with regard to the rate of powdery mildew occurrence were not significant. Correlating the means, however, revealed a relationship between powdery mildew incidence and branch tip withering. This relationship is a possible indication of the ongoing oak dieback. No statistically significant relationship between tree defoliation and powdery mildew incidence was found. The lack of statistical significance, as observed here, implies that water stagnation within the investigated stands had no effect on Erysiphe alphitoides infection.
Źródło:: Leśne Prace Badawcze; 2015, 76, 1; 73-77
1732-9442
2082-8926
Pojawia się w:: Leśne Prace Badawcze
Dostawca treści:: Biblioteka Nauki