Wyniki wyszukiwania

1

Forest stands in Phyllitido-Aceretum community occurring on limestone rocks and shelves – comparison of their structure in strictly protected and managed forests

100%

Baran J., Bodziarczyk J.

Polish Journal of Ecology

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2019

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tom 67

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nr 2

2

Production rate and economic efficiency of mid-class harvesters in thinnings of mountainous terrains of Central Slovakia

100%

Tajbos J., Messingerova V.

Electronic Journal of Polish Agricultural Universities. Series: Forestry

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2014

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tom 17

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nr 2

3

Limiting growth model for pine

100%

Bruchwald A.

Bulletin of the Polish Academy of Sciences. Biological Sciences

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1991

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tom 39

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nr 2

4

Determination of forest soil traction parameters

84%

Walczykova M., Walczyk J., Kormanek M.

Electronic Journal of Polish Agricultural Universities. Series: Forestry

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2002

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tom 05

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nr 2

5

The impact of beaver ponds on tree stand in a river valley

84%

Boczon A., Wrobel M., Syniaiev V.

Journal of Water and Land Development

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2009

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nr 13a

6

The influence of forest stand and organic horizon development on soil surface measurement of magnetic susceptibility

84%

Zawadzki J., Fabijanczyk P., Magiera T.

Polish Journal of Soil Science

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2007

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tom 40

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nr 2

113-124

Topsoil magnetic susceptibility measurements (κ) are used for the fast and effective assessment of soil pollution by heavy metals, the result of industrial and urban dust deposition. Those areas with a high content of anthropogenic magnetic particles in the soil, which as a result exhibits enhanced topsoil magnetic susceptibility, are areas potentially contaminated with heavy metals. While taking the measurements and during further data interpretation it is important to include some additional sampling factors that can influence the measured value. The aim of this study wasto verify the hypothesis of the influence of a forest stand on the magnetic signal measured in forest topsoil, as well as the influence of the thickness of the organic layer on the surface κ measurement. The study was based on data from 830 regional measurements. Furthermore, 620 values measured at a local site were used to validate the results obtained using the regional data set. The results showed that soil surface magnetic susceptibility measured in deciduous forests and in deciduous with coniferous admixtures was statistically higher than those measured in coniferous forests. The data also revealed that thick organic horizon slightly decrease the κ valuemeasured on the soil surface. However, there is no direct relationship between the measured κ valuesand the occurrence of a tree stand, instead there is a more complex influx of natural (pedological,geological) and methodological (measurement preferences) features.

7

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Can macrofungal biodiversity predict forest status and dynamics? A view from South European Mediterranean forests (Italy)

84%

Ambrosio E., Feest A.

Acta Mycologica

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2021

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tom 56

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nr 1

8

Importance of old forest stands for diversity of birds in managed pine forests – a case study from Augustow Forest (NE Poland)

84%

Zawadzka D., Drozdowski S., Zawadzki G., Zawadzki J., Mikitiuk A.

Polish Journal of Ecology

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2018

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tom 66

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nr 2

We assessed the assemblages of birds inhabiting pine-dominated managed forest, aged between 1–5 years and above 140 years. Birds were counted on study plots representing eight different phases to the forest's development, with nesting, foraging and migratory guild categories recognised. Numbers of bird species and population densities, both increased markedly with stand age (respectively r = 0.988 and r = 0.936, P < 0.001). While numbers of ground-nesting bird species failed to correlate with stand age, successively older stands did support ever-greater proportions of species in the assemblage that nested in tree crowns (r = 0.976, P < 0.005) or tree holes (r = 0.833, P < 0.005). Raptors were most abundant in forest at the oldest stages of growth, and there was an age-gradient-related increase in the shares of both plant-eating species (r = 0.952, P < 0.005) and raptors (r = 0.764, P < 0.005). Resident birds were most numerous in the oldest forest. PCA for ten selected variables (relating to guild type) showed that the two principal components explained almost 98% of the variation among groups of bird guilds in relation to forest age. On the basis of their suitability for birds it was possible to distinguish three categories of stand by age group, of which the first encompasses the initial stage, the second a broad interval involving middle-aged stands of between 16 and 140 years, and the third forest more than 140 years old. The presence of the oldest stands of all can thus be seen to play a very important role in maintaining high-diversity populations of birds in managed forest.

9

Diversity of spruce ectomycorrhizal morphotypes in four mature forest stands in Poland

84%

Karlinski L., Kieliszewska-Rokicka B.

Dendrobiology

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2004

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tom 51

25-35

Ectomycorrhizal communities structure of Norway spruce (Picea abies L. (Karst.) was studied in four mature forest stands: Brenna, Salmopol, Zwierzyniec and Mirachowo. Morphological classification was used to distinguish the major mycorrhizal types associated with spruce in different forest types. Three of the foreststands were located within the natural geographical range of Norway spruce (Brenna, Salmopol, Zwierzyniec) and one (Mirachowo) was located in so-called “spruce-less zone”. The sites differed in terms of environmental pollution. The mountain sites (Brenna, Salmopol) were characterized by relatively high levels of air pollution. The upland forest stand (Zwierzyniec), located in the southeastern part of Poland, was affected by a moderate pollution. The lowland stand in northern Poland (Mirachowo) was free from direct impact of anthropogenic pollution. The level of mycorrhizal colonization was 100% at all the study sites. Thirty-seven mycorrhizal morphotypes were distinguished in total. The number of ectomycorrhizal morphotypes varied between sites from 12 in Salmopol to 28 in Zwierzyniec. From one to three dominant morphotypes were found at the study site. Site-specific morhotypes were also observed. The frequency of mycorrhizal morphotypes differed between the forest stands.

10

Valuable tree species in forest stands of the Czech Republic - black cherry

84%

Zeidler A.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

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2005

|

tom 91

471-478

11

Analysis of forest stands damages caused by the usage of harvester technologies in mountain areas

84%

Dvorak J.

Electronic Journal of Polish Agricultural Universities. Series: Forestry

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2005

|

tom 08

|

nr 2

12

Estimation of net carbon and water exchange at a scots pine forest stand in Poland

84%

Urbaniak M., Chojnicki B. H., Danielewska A., Baran M., Olejnik J.

Acta Agrophysica. Rozprawy i Monografie

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2010

|

nr 2[179]

13

Local variability of soil properties of forest stands along the North-South climatic transect in Europe

84%

Degorski M.

Polish Journal of Ecology

|

2003

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tom 51

|

nr 4

The differentiation of the properties of soils at the level of pedons constitutes one of the most essential elements of the functional-structural analysis of the ecosystems. The purpose of the studies presented in this paper was to assess the spatial variability of the soil cover as conditioned by the micro-habitat differentiation and expressed through the variability of thickness of the genetic horizons for individual pedons, as well as spatial differences in acidity, moisture, conductivity, and organic carbon content. The studies were conducted on podzolic soils covered with forest vegetation. The results of studies carried out and described here indicate an influence of the local topo-habitat conditions on the spatial variability of soil properties. The following results can be drawn on the basis of the results obtained: 1) within the organic horizon the highest spatial differentiation of the properties considered was observed in the soils of Finland and Norway, while within the humus and enrichment horizons it was greater in the soils of the Polish part of the study area; 2) an exception to the above regularity is constituted by moisture; the highest spatial differentiation at this factor within all the genetic horizons was always observed in the soils characterised by its highest values; 3) spatial differentiation of the properties analysed is greater within the organic and humus horizons than in the enrichment horizon; 4) the biggest differences between the particular variants of the experiment, implemented during the four years of study, were displayed by: a) within the organic layer - the pedons of the northern and central parts of the study area, from Norway to Latvia, b) within the humus layer - the marginal pedons of FN1 and PL3, as well as the pedons of the central part of the study area - from Lithuania and Latvia, c) within the enrichment layer - the pedons of the Polish part of the study area; 5) interdependence was observed between the length of the micro-transects and the variability of the soil properties analysed; and 6) the strongest interrelation between the analysed properties were registered for the moisture - organic carbon content and moisture - conductivity.

14

Suitability of test tree method in assessment of threat to pine stands posed by Armillaria spp.

84%

Szewczyk W.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2006

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tom 05

|

nr 2

15

Water absorption of organic matter taken from horizons of ectohumus of forest soils under Norway spruce stands

67%

Kucza J., Urbas J.

Electronic Journal of Polish Agricultural Universities. Series: Forestry

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2005

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tom 08

|

nr 4

16

Cavity roost site availability and habitat use by bats in different aged riparian cottonwood stands

67%

Swystun M. B., Lane J. E., Brigham R. M.

Acta Chiropterologica

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2007

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tom 09

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nr 1

Riparian forests provide important roosting habitat, abundant prey and access to drinking water for many bat species but to date there has been little research on the differential quality of habitats within riparian areas. We quantified the density of potential roost cavities in three age classes (i.e., young: ca. 20 years, mature: ca. 60 years, and old: ca. 100 years) of riparian cottonwood (Populus deltoides) forest stands. Bat activity was also sampled using acoustic detectors in one representative stand of each age class. Stands were situated along an 80 km stretch of the Missouri River in southeastern South Dakota and northwestern Iowa, USA. We predicted the highest density of potential roosts and the highest activity of bats to occur in the oldest age class. Contrary to our predictions, and previous work in aspen dominated upland sites, we found that the density of potential roosts was not significantly different between mature and old stands. However, there were no potential roosts in young stands. Data from guano traps verified the use of a number of cavities in both mature and old stands. Both commuting and foraging activities were highest in the mature, relative to the old and young stand. In total, our data indicate that mature and old stands represent high quality roosting habitat, with the mature being used preferentially for commuting and foraging. Trees in the oldest stands, however, are nearing the end of their lifespan and falling. Younger cohorts must therefore be retained for future recruitment of natural cavities.

17

The influence of bedrock type on spruce timber quality in mountainous forest stands

67%

Barszcz A., Rutkowska L.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

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2005

|

tom 91

403-408

18

Forestry and water budget of the lowlands in northeast Germany – consequences for the choice of tree species and for forest management

67%

Muller J.

Journal of Water and Land Development

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2009

|

nr 13a

19

Chemical and microbial properties of sandy mine soils afforested with Scots pine and silver birch

67%

Chodak M., Niklinska M., Sliwinska E.

Polish Journal of Environmental Studies

|

2011

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tom 20

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nr 2

The objective of this study was to compare chemical and microbial properties of sandy mine soils under young Scots pine, silver birch, and mixed pine-birch forest stands. The measured properties included the contents of organic C (Corg) and total N (Nt), the Corg-to-Nt ratio, pH, microbial biomass, basal respiration, and activities of dehydrogenase, acid phosphomonoesterase, and urease. Community level physiological profiles (CLPPs) of soil bacteria were determined with BiologR test and genetic profiles with the DGGE method. Scots pine and silver birch did not affect the Corg and Nt contents in the studied mine soils. The soil under birch contained larger and more active microbial biomass than the soil under pine. Under the mixed stand, most of the microbial properties were intermediate between the pine and the birch stand. The DGGE profiling indicated different composition of soil bacteria under the birch stand compared to the other stands. Differences in CLPPs were less pronounced, probably due to functional redundancy of soil bacteria.

20

Determination of selected logging technologies impact, in thinned coniferous stands, on damage level of trees

67%

Sowa J. M., Stanczykiewicz A.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

|

2005

|

tom 91

275-281

Ograniczanie wyników

Forest stands in Phyllitido-Aceretum community occurring on limestone rocks and shelves – comparison of their structure in strictly protected and managed forests

Production rate and economic efficiency of mid-class harvesters in thinnings of mountainous terrains of Central Slovakia

Limiting growth model for pine

Determination of forest soil traction parameters

The impact of beaver ponds on tree stand in a river valley

The influence of forest stand and organic horizon development on soil surface measurement of magnetic susceptibility

Can macrofungal biodiversity predict forest status and dynamics? A view from South European Mediterranean forests (Italy)

Importance of old forest stands for diversity of birds in managed pine forests – a case study from Augustow Forest (NE Poland)

Diversity of spruce ectomycorrhizal morphotypes in four mature forest stands in Poland

Valuable tree species in forest stands of the Czech Republic - black cherry

Analysis of forest stands damages caused by the usage of harvester technologies in mountain areas

Estimation of net carbon and water exchange at a scots pine forest stand in Poland

Local variability of soil properties of forest stands along the North-South climatic transect in Europe

Suitability of test tree method in assessment of threat to pine stands posed by Armillaria spp.

Water absorption of organic matter taken from horizons of ectohumus of forest soils under Norway spruce stands

Cavity roost site availability and habitat use by bats in different aged riparian cottonwood stands

The influence of bedrock type on spruce timber quality in mountainous forest stands

Forestry and water budget of the lowlands in northeast Germany – consequences for the choice of tree species and for forest management

Chemical and microbial properties of sandy mine soils afforested with Scots pine and silver birch

Determination of selected logging technologies impact, in thinned coniferous stands, on damage level of trees