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Tytuł:
Hybridization results using the hybrid Abies cilicica × Abies cephalonica
Wyniki hybrydyzacji przy użyciu hybrydy Abies cilicica Abies × cephalonica
Autorzy:
Kobliha, J.
Škorpik, P.
Stejskal, J.
Češka, P.
Powiązania:
https://bibliotekanauki.pl/articles/11542972.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
hybridization
hybrid
Abies cilicica x Abies cephalonica
needle
morphology
plant morphology
interspecific hybridization
Opis:
Abies fraseri (FF) is a North American conifer which is crucial for growers of Christmas trees. This species suffers 100% mortality after infection of root rot caused by Phytophthora cinnamomi. The hybrid material A. cilicica × A. cephalonica (CZ) and A. koreana × (A. cilicica × A. cephalonica) was utilized as mother trees for applications of Abies fraseri pollen. In addition to resistance to fungal disease, a long-term monitoring of growth of young seedlings along with the impact of artificial crossing on morphology of the progeny is covered. Except for increased resistance, some offspring has also exhibited a remarkable heterosis effect at younger age and different growth habit and different shape of their needles. All this may offer in the future a wide range of applications, both for crops under strong anthropogenic pressure with changing climatic conditions and for crops grown for production of Christmas trees and outstanding ornamental cultivars. Annual crossing success was determined in present study using X-ray imaging. The most successful combinations in 2012 were those of CZ1 × FF25 and CZ1 × FF76 with 7% of full seeds, followed by CZ2 × FF25 with 6% and CZ2 × FF31 with 4% of the full seeds. The evaluation of young seedlings from control crossing in 2007 highlighted significant accented height growth of complicated hybrid (A. koreana × (A. cilicica × A. cephalonica)) × FF PC. Morphology of needles showed variability in their length as compared with the needle width which was found to be less appropriate characteristic for distinguishing between different combinations.
Abies fraseri (FF) jest północno-amerykańskim iglakiem ważnym z punktu widzenia hodowców choinek świątecznych. Gatunek ten wykazuje 100% śmiertelność po porażeniu zgorzelą korzenia spowodowaną przez Phytophthora cinnamomi. Materiał hybrydowy A. cilicica × A. cephalonica (CZ) oraz A. koreana × (A. cilicica × A. cephalonica) został wykorzystany jako drzewa matczyne do aplikacji pyłku Abies fraseri. Poza odpornością na chorobę od grzybową, badania dotyczyły długoterminowego monitorowania wzrostu młodych siewek oraz wpływu sztucznego krzyżowania na morfologię potomstwa. Oprócz zwiększonej odporności, niektóre młode rośliny wykazały znaczny efekt heterozy, różny wzrost i różny kształt igieł. Wszystko to może w przyszłości dać wiele różnorodnych zastosowań, zarówno w przypadku roślin pod silną presją antropogeniczną przy zmiennych warunkach klimatycznych jak i dla roślin hodowanych do produkcji choinek świątecznych oraz na wybitne odmiany ozdobne. Powodzenie corocznego krzyżowania określono w niniejszym badaniu pryz użyciu promieniowania rentgenowskiego. Najbardziej udanymi kombinacjami w 2012 r. były CZ1 × FF25 i CZ1 × FF76 z 7% pełnych nasion, a następnie CZ2 × FF25 z 6% i CZ2 × FF31 z 4% pełnych nasion. Ocena młodych sadzonek pochodzących z kontrolnego krzyżowania w 2007 r. wskazała na istotnie zaznaczony wzrost złożonej hybrydy (A. koreana × (A. cilicica × A. cephalonica)) × FF PC. Morfologia igieł wykazała różnorodność ich długości w porównaniu z szerokością igieł, która była mniej istotną cechą do odróżnienia kombinacji.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2014, 13, 4; 23-31
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Height-diameter models for mixed-species forests consisting of spruce, fir, and beech
Autorzy:
Petras, R.
Bosela, M.
Mecko, J.
Oszlanyi, J.
Popa, I.
Powiązania:
https://bibliotekanauki.pl/articles/38691.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
height-diameter model
mixed-species forest
tree
spruce
fir
beech
Abies alba
Picea abies
Fagus sylvatica
Opis:
Height-diameter models define the general relationship between the tree height and diameter at each growth stage of the forest stand. This paper presents generalized height-diameter models for mixed-species forest stands consisting of Norway spruce (Picea abies Karst.), Silver fir (Abies alba L.), and European beech (Fagus sylvatica L.) from Slovakia. The models were derived using two growth functions from the exponential family: the two-parameter Michailoff and three-parameter Korf functions. Generalized height-diameter functions must normally be constrained to pass through the mean stand diameter and height, and then the final growth model has only one or two parameters to be estimated. These “free” parameters are then expressed over the quadratic mean diameter, height and stand age and the final mathematical form of the model is obtained. The study material included 50 long-term experimental plots located in the Western Carpathians. The plots were established 40–50 years ago and have been repeatedly measured at 5 to 10-year intervals. The dataset includes 7,950 height measurements of spruce, 21,661 of fir and 5,794 of beech. As many as 9 regression models were derived for each species. Although the “goodness of fit” of all models showed that they were generally well suited for the data, the best results were obtained for silver fir. The coefficient of determination ranged from 0.946 to 0.948, RMSE (m) was in the interval 1.94–1.97 and the bias (m) was –0.031 to 0.063. Although slightly imprecise parameter estimation was established for spruce, the estimations of the regression parameters obtained for beech were quite less precise. The coefficient of determination for beech was 0.854–0.860, RMSE (m) 2.67–2.72, and the bias (m) ranged from –0.144 to –0.056. The majority of models using Korf’s formula produced slightly better estimations than Michailoff’s, and it proved immaterial which estimated parameter was fixed and which parameters were free.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2014, 56, 2
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tree ring growth as a response of silver fir (Abies alba Mill.) from Rudnik Forest District to climatic factors
Autorzy:
Tomczyk-Kida, Monika
Durło, Grzegorz B.
Wilczyński, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/2044111.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
Abies alba
climate
dendrochronology
dendroclimatology
dendrochronological analysis
Opis:
The aim of the study was to evaluate the sensitivity of silver fir (Abies alba Mill.) from the Rudnik Forest District on the selected meteorological elements and to develop a chronology of local tree-ring width and the annual sensitivity. Based on the analysis, the site chronology of silver fir was developed and the strength of the relationship between the climate components and the width of annual rings was calculated. In addition, we examined the degree of homogeneity of short-term incremental response, rated the representativeness of the chronology and climate signal strength. Having analysed the indicator years, namely 1932–2013, we concluded that the growth of firs was positively influenced mainly by air temperature in winter, and to a lesser extent, by precipitation in spring and summer. The main factors that limit its growth are cold winters, cool and low rainfall summers, and rainy springs.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 2; 135-145
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The European spruce bark beetle Ips typographus (L.) in wind-damaged stands of the eastern part of the Tatra National Park - the population dynamics pattern remains constant
Autorzy:
Grodzki, Wojciech
Gąsienica Fronek, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/2042492.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
Picea abies
mountain forests
insect outbreak
nature conservation
Opis:
In March 2017, in the eastern part of the Tatra National Park in Poland, large windthrowns affected the passively and actively protected Norway spruce Picea abies stands. In early 2018, a set of 12 small research plots (20 trees on each plot) was established in the Norway spruce stands next to the windblown area – 6 in the stands under active nature protection (broken and fallen trees processed in 2017), and 6 in the stands under passive nature protection (trees left on the ground). Living trees on the plots were regularly checked during the growing season in order to identify and register the spruces infested by Ips typographus, which were dissected in 2 or 4 halfmeter sections. 155 spruces (64%) infested by I. typographus were recorded on all 12 plots: 118 out of 120 (98%) in passive and 37 out of 120 trees (31%) in active protection. Mean infestation density calculated on 128 samples from 47 trees was higher under passive than under active protection (1.23 and 0.92 mating chamber per 1 dm2, respectively). Among 1709 gallery systems, those with 2 maternal galleries prevailed (63.0%); the mean share of females was higher in passive than in active protection zone (63.1 and 59.6% respectively). The mean number of progeny per one female was higher in active than in passive protection zone (20.23 and 19.12 respectively). I. typographus attack on standing trees had lower intensity in the stands previously subjected to the processing and removal of fallen and broken trees, which indicates positive effect of implemented active protection procedures. The parameters describing I. typographus population on attacked trees, as well as low activity of natural enemies, demonstrate its reproduction potential and resulting high risk of a new outbreak, according to the pattern known earlier from the other areas in Poland and Europe.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 3; 174-181
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A tree - ring reconstruction of geomorphologic disturbances in cliff forests in the Tatra Mts.
Autorzy:
Zielonka, T.
Dubaj, N.
Powiązania:
https://bibliotekanauki.pl/articles/294903.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
cliff forest
dednrochronology
landslide
Norway spruce (Picea abies)
rockfall
Opis:
Geomorphological events are very important disturbance factors for cliff forests and forests located on steep mountain slopes. In this study we present dendrochronological reconstruction of two types of disturbances which affect subalpine forest growing in such extreme habitats in Roztoka Valley in the Tatra Mountains: landslide and rockfalls. We determine the years of death of trees found in landslide area on Czuba Roztocka which indicate the year of 1997 as the time of this event, probably related to heavy midsummer rainfall in this year. Scars on trees growing at the base of Orle Ściany cliff allowed determining the rockfall events. We found that scars, even in neighbour trees were formed in different years between 1940 and 2004. It means that they were formed rather by separate stones which fell from the cliff sporadically then a large scale fall of debris at the same time. This may suggest that rockfalls in cliffs of Orle Ściany were limited to single rocks which fell successively when erosion process separated them from the bedrock. Dendrochronology seems to be an effective method which enables long term reconstruction of gemorphological processes in the High Tatras.
Źródło:
Landform Analysis; 2009, 11; 71-76
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of location of Norway spruce (Picea abies) stumps on their colonisation by insects in the mountains
Autorzy:
Skrzecz, Iwona
Bulka, Maria
Ukalska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/2044136.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
mountains
altitude
exposure
insect assemblages
Coleoptera
Picea abies stump
Opis:
Tree stumps provide habitat for insect assemblages, which are influenced by various factors. Among these factors, physical and chemical changes of the stumps, fungi developing in the dead wood and stump size are most often reported. However there is limited information about the abundance of insects in stumps that are located on mountains where there are different microclimatic conditions. The studies pointed at the determination whether the location of Picea abies stumps in mountains at different altitudes above sea level and on mountainsides with different sun exposure has an impact on the frequency of insects colonising them. The study was carried out in the Eastern Sudety Mountains situated in south-western Poland. The stumps were in clearcuts located at the altitudes 600–700 m and 900–1000 m above sea level and on southern and northern mountainsides. The insects were collected from 0.05 m2 of bark from each stump and identified to the family, order or species level. The numbers of insects in the stumps were modelled with the use of the Poisson distribution or the negative binomial distribution and the generalised linear models. Picea abies stumps were colonised by insects from 16 families in 3 orders (Coleoptera, Diptera, Hymenoptera) in which the Coleoptera was most frequently represented by the families Cerambycidae, Curculionidae (with the sub-family Scolytinae). In the stumps located at the elevation of 900–1000 m there were 28% more insects than in the stumps at 600–700 m. The stumps located on mountainsides with northern exposure were colonised more abundantly by Cerambycidae. Numbers of Curculionidae in the stumps were affected by altitude. Most Curculionidae were found in the stumps located at the elevation 900–1000 m above sea level. The interaction of altitude and mountainside exposure showed more insects in the stumps at higher altitude, regardless of the mountainside exposure. The results showed that the total number of insects in the stumps was influenced by their location in mountains.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 1; 64-77
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of temperature of heat treatment on energetic intensity of flat milling of picea abies
Autorzy:
Koleda, P.
Korčok, M.
Barcík, S.
Iľaš, S.
Powiązania:
https://bibliotekanauki.pl/articles/409602.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
ThermoWood
face milling
cutting power
energetic efficiency
picea abies
Opis:
The paper deals with the research of the influence of thermal modification temperature of spruce wood on the electric energy consumption of its face milling. Samples of spruce wood heat treated at temperatures of 160, 180, 200 and 220°C were milled at the cutting speed of 20, 40 and 60 m.s-1, the feed rate of 6, 10 and 15 m.min-1, the rake angle of 15° with the depth of the cut of 1 mm. The energy consumption was evaluated from the cutting power, which was based on the difference during milling and idle cycle. The analysis of variance showed a decrease in cutting power with an increasing temperature of thermal modification. The average cutting power value is 137.7 W at the native sample and 80.8 W at the sample treated at 220°C. The Duncan’s test of statistical significance has shown that the thermal modification has a statistically significant effect on the cutting power values.
Źródło:
Management Systems in Production Engineering; 2018, 3 (26); 151-156
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring of xylem formation in Picea abies under drought stress influence
Autorzy:
Gryc, V.
Hacura, J.
Vavrcik, H.
Urban, J.
Gebauer, R.
Powiązania:
https://bibliotekanauki.pl/articles/41506.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
monitoring
xylem formation
Norway spruce
Picea abies
drought stress
Opis:
The effect of drought stress on regular cambium activity and wood formation in stems of two different clones of Norway spruce (Picea abies (L.) Karst.) was investigated. Tissue samples were taken during the growing season from May to September 2010. Artificial drought stress, induced by long-term sheltering of the soil, was significantly manifested in clone 15. In the stressed individual, the period of cambium activity was shorter, the total number of formed cells was lower and the resulting tree ring was narrower. The number of cells in the phases of postcambial growth and secondary cell wall formation was significantly lower in comparison to the control tree. The tracheid lignification process was slower in the tree stressed by water deficit and the first mature tracheids were observed later. On the other hand, in clone 18 probably genetic dispositions played an important role as no considerable deviations in the cambium activity and new wood cells production were observed. Fitting xylem increments to the Gompertz function showed that the period of the most intensive cell formation was at the turn of June and July and the maximum daily production of new cells was higher in non-stressed individuals than in the stressed ones. The results of the experiment lead us to the conclusion that drought stress can significantly affect the cambium activity of some clones, the differentiation process of anatomical elements, and thus also the resulting tree ring width.
Źródło:
Dendrobiology; 2012, 67
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The radial growth-competition relationship in Picea abies stands affected by windfall
Autorzy:
Badea, O.
Dumitru, I.
Cojocia, C.
Popa, I.
Powiązania:
https://bibliotekanauki.pl/articles/41406.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Norway spruce
stand
Picea abies
windfall
risk factor
Opis:
Actual status of mountain forests especialy, of Norway spruce (Picea abies Karst. (L)) stands is a result of combined action between forest management measures and biotic and abiotic risk factors. In this context, tree growth dynamics is a result of multifactor interaction (competition, disturbance, management practice, climate etc.). Wind damage affect the stand structure and normal ecosystem functions including the relationship between individual tree growth and competition processes. Though, it is recorded a diminishing of productive capacity for affected stands as well as a significant diameter increment for remaining standing trees. The correlation between tree growth (cumulate basal area increment in the last 10 years) and competition (Hegyi and Schutz competition indices) was analysed in stands with different windfall intensity. No relationship between tree growth and competition was observed in highly affected stands. Schutz competition index explains better individual tree growth comparing with Hegyi index in low or no-affected stand by windthrow. The variability of the basal area increment (lnΔɡ10), explained by competition indices, is rather low (<2%) in the stand that had been highly affected by windfall, regardless of the selected competition index. Thus, significant reduction of the stand density related to number of trees (low density), as a consequence of high intensity windfalls, crown competition has a very small influence on the basal area increment comparing with situations met in low (high density) and moderate (medium density) affected stands.
Źródło:
Dendrobiology; 2015, 73
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy metals accumulation in silver fir needles in Swietokrzyski National Park
Autorzy:
Kozłowski, Rafał
Strzyż, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2175211.pdf
Data publikacji:
2021
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
bioindication
air pollution
Abies alba
bioindykacja
zanieczyszczenie powietrza
jodła pospolita
Opis:
The article demonstrates the results of the research studies related to the air polluted with heavy metals in the area of Swietokrzyski National Park. The two-year-old needles of Abies alba (Mill) were used as the bioindicator with the intention of carrying out the research. The studies were conducted in the autumn of 2012. The results showed the spatial variability of concentrations in the range of the analysed metal deposition patterns in the needles of Abies alba (Mill). The average content of the analysed elements seemed to be the highest in the case of zinc (26.6 mg·kg–1 d.m.), strontium (6.5 mg·kg–1 d.m.) and nickel (1.6 mg·kg–1 d.m.). The research studies revealed that the significant role in determining the content of heavy metals in the two-year-old needles was played by the communication. The highest values were recorded at the research sites situated in the immediate neighbourhood of the voivodeship roads. It was also confirmed that the content of metals was influenced by the so-called low emission from the household and welfare sector together with the remote imission.
Źródło:
Chemistry-Didactics-Ecology-Metrology; 2021, 26, 1-2; 65--72
2084-4506
Pojawia się w:
Chemistry-Didactics-Ecology-Metrology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy Metal (Cd, Cr, Cu, Ni, Pb, Zn) concentrations in spruce Picea abies L. along the roads of various traffic density in the Podhale region, Southern Poland
Koncentracje metali ciężkich (Cd, Cr, Cu, Ni, Pb, Zn) w świerku pospolitym Picea abies L. wzdłuż dróg o różnym natężeniu ruchu samochodowego na obszarze Podhala
Autorzy:
Korzeniowska, J.
Panek, E.
Powiązania:
https://bibliotekanauki.pl/articles/385388.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
metale ciężkie
świerk pospolity
Picea abies L.
biomonitoring
natężenie ruchu
heavy metals
spruce (Picea abies L.)
traffic density
Podhale Region
southern Poland
Opis:
The aim of the paper was to determine influence of traffic density on heavy metal concentrations (Cd, Cr, Cu, Ni, Pb, Zn) in two years needles of spruce Picea abies L. along the roads of various traffic density located in the Podhale region, Southern Poland. The samples of Picea abies L. were collected along two roads: heavily frequented main road no. 95 Kraków - Zakopane between Chabówka and Nowy Targ and a district road of low traffic density no. 1644 Łopuszna - Dursztyn, between villages Łopuszna and Nowa Biała. The samples were collected along five transects: three at the road no. 95 and two at the road no. 1644 at the following distances from the road: 5 m, 10 m, 50 m and 100 m. Generally, metal concentrations descended according to the increasing distances from the road. The highest concentrations were stated in case of Cu, Ni and Pb at the distance 5 meters from the road Chabówka - Nowy Targ (10,1 ± 1,3 µg Cu/g; 2,9 ± 0,2 µg Ni/g and 2,4 ± 0,6 µg Pb/g), and the lowest concentrations with exception of Cd were stated for both mentioned roads at the distance 100 meters. Traffic density influenced heavy metal concentrations in spruce Picea abies L. The differences in metal concentrations along two roads were presented by concentration coefficients, calculated as quotient of metal concentrations at the roads of various traffic density. The highest concentration coefficients at the distance of 5 m were stated for: Ni (2.6); Pb (2.4) and Cu (1.7) and the lowest for Cd (0.5), Cr (0.9) and Zn (0.8).
W artykule przedstawiono wpływ natężenia ruchu samochodowego na zawartość metali ciężkich (Cd, Cr, Cu, Ni, Pb, Zn) w świerku pospolitym Picea abies L. Próbki świerka pospolitego (dwuletnie igły) zostały pobrane wzdłuż dwóch dróg: o wysokim natężeniu ruchu (Kraków – Zakopane na odcinku Chabówka – Nowy Targ) oraz o niskim natężeniu ruchu (Łopuszna – Dursztyn na odcinku Łopuszna – Nowa Biała). Transekty, w których pobrano próbki, usytuowane były prostopadle do osi jezdni, w czterech odległościach od drogi (5 m, 10 m, 50 m i 100 m). Zauważono prawidłowość, że w miarę oddalania się od drogi koncentracje metali ciężkich, z wyjątkiem Cd, zmniejszały się. Stwierdzono również, że natężenie ruchu samochodowego miało wpływ na zawartość metali w igłach świerka. Różnice w zawartości metali wyrażone za pomocą współczynników koncentracji, w odległości 5 m od drogi, osiągały najwyższe wartości w przypadku niklu (2,6) oraz ołowiu (2,4) i miedzi (1,7).
Źródło:
Geomatics and Environmental Engineering; 2010, 4, 4; 89-96
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spruce tree-ring proxy signals during cold and warm periods
Autorzy:
Esper, Jan
Carnelli, Adriana L.
Kamenik, Christian
Filot, Marc
Leuenberger, Markus
Treydte, Kerstin
Powiązania:
https://bibliotekanauki.pl/articles/956991.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
stable isotopes
maximum latewood density
reconstruction model
picea abies
engadin
alps
Opis:
The strength and temporal rigidity of climate signals are important characteristics of proxy data used to reconstruct climate variability over pre-instrumental periods. Here, we assess the performance of different tree-ring proxies, including ring width, maximum latewood density, δ13C, and δ18O, during exceptional cold (1800–1850) and warm periods (1946–2000). The analysis was conducted at a spruce (Picea abies) timberline site in the Swiss Alps in proximity to long homogenized instrumental records to support calibration tests against early temperature and precipitation data. In this cold environment, tree-ring width, maximum latewood density, and δ18O are mainly controlled by temperature variations. δ13C is influenced by various factors including temperature, precipitation, sunshine, and relative humidity. When comparing the response patterns during cold and warm periods, ring width and maximum latewood density revealed temporally stable temperature signals. In contrast, the association between the stable isotopes and climate changed considerably between the early 19th and late 20th centuries. The temperature signal in δ18O was stronger during the recent warm period, whereas the opposite is true for δ13C. In δ13C, the temperature signal weakened from the early 19th to the late 20th centuries, but an (inverse) precipitation signal evolved indicating that soil moisture conditions additionally limited recent carbon isotope ratios. An attempt to combine the tree-ring proxies in a multiple regression model did not substantially improve the strength of the dominating temperature signal retained in the latewood density data as this proxy already explained a significant fraction of summer temperature variability. Our findings underscore the importance of split calibration/verification approaches including cold and warm periods, and challenge transfer models based on only late 20th century observational data.
Źródło:
Dendrobiology; 2017, 77; 3-18
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flowering and cone bearing of Picea abies grafts in second-generation seed orchards
Autorzy:
Misiorny, A
Chalupka, W.
Powiązania:
https://bibliotekanauki.pl/articles/41542.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Norway spruce
Picea abies
cone yield
seed production
flowering
seed orchard
Opis:
In 2004, abundant flowering of Norway spruce (Picea abies (L.) Karst.) was observed in two second- generation seed orchards: (1) ‘Outbreeding’, promoting crossing between clones of five geographically distant populations; and (2) ‘Kolonowskie’, restoring a population whose offspring exists only in an international experiment (IUFRO 1964/1968). In bothseed orchards, female strobili were produced by 91.3% and 91.7% of clones, represented by 64.1% and 55.5% of grafts, respectively, and statistically significant differences between clones were found in the number of mature cones. In the case of the seed orchard ‘Outbreeding’, the number of mature cones in individual clones was significantly correlated with latitude of the origin of maternal populations (r = 0.8826, p = 0.0470). The majority (95%) of cones in seed orchards ‘Outbreeding’ and ‘Kolonowskie’ were produced by only 28.2% and 38.5% of all clones, and 21.4% and 25.7% of all grafts, respectively. These data attest to a disparity between the level of genetic diversity in seed orchard progeny resulting from the observed numbers of cone-bearing clones and grafts and the genetic diversity expected from the actual participation of clones and grafts in seed orchard composition. The estimated seed production per 1 ha of seed orchard area in 2004 reached 21.05 kg for ‘Outbreeding’ and 21.72 kg for ‘Kolonowskie’.
Źródło:
Dendrobiology; 2006, 56; 51-59
1641-1307
Pojawia się w:
Dendrobiology
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:
Do pheromone trapping always reflect Ips typographus (L.) population level? A study from the Tatra National Park in Poland
Autorzy:
Grodzki, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/2041268.pdf
Data publikacji:
2021
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
pheromone monitoring
bark beetles
protected areas
Picea abies
mountains
Tatra
Opis:
Pheromone traps are used for monitoring I. typographus populations in Norway spruce stands of the Tatra National Park (TPN) in Poland. The presented study is based on the set of pheromone traps of precisely known location (23) located in the whole area of the TPN and operated continuously in 2010–2019. The data on the captures of beetles were compared with two kinds of data concerning the mortality: the area covered by standing dead trees (airborne photographs) in the no-intervention zone, and the volume of trees infested by bark beetles processed in the active protection zone. No relationship was found between the mean numbers of beetles captured yearly in all pheromone traps in the whole TPN area and the volume of infested trees removed from the stands in the active protection zone. The captures in the two selected study areas were correlated with the area of spots with dead trees in the 500 m circle around the traps, however, this correlation is not statistically significant. There is no relation of captures to the volume of processed infested trees. The captures decreased in the growing seasons after the wind damage, and increased markedly after the drought started in 2015. The results of pheromone trapping are affected by several factors, as wind damage and defence potential of trees resulting from their physiological status. Pheromone traps represent valuable source of information about the bark beetle I. typographus population dynamics, although the collected data do not enable direct definition of its population level, especially in the protected areas with different and unstable (changed in 2017) approach to the protection of stands. As most of the information on beetles is captured in the first half of the growing season, the data collected till the end of July are sufficient for monitoring purposes; thus, the trapping should be reduced to the period May–July.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 1; 36-47
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 115

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