Wyniki wyszukiwania - AGRO

1

Forests of the protected landscape area Annowka in the Lublin Province

100%

Luczycka-Popiel A.

Annales Universitatis Mariae Curie-Sklodowska. Sectio C, Biologia

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2000

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tom 55

2

Habitat segregation by moose in a boreal forest ecotone

88%

Miller B. K., Litvaitis J. A.

Acta Theriologica

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1992

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tom 37

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nr 1-2

We examined seasonal borne range size and habitat use by sexes of moose Alces dices (Linnaeus, 1758) near the southern edge of this species' geographic range. Home range size did not differ between males and females during any season. The distribution of forage partly explained seasonal habitat use by both sexes. However, sites occupied by males in summer (1 Juno - 15 September) and autumn (16 September - 31 December) were at higher elevations, had steeper slopes, and were farther from potential aquatic feeding sites than sites used by females. We suggest that habitat segregation during these seasons was a consequence of differential resource requirements, not active avoidance by either sex. During summer, females occupied lowland sites near forest cuts, presumably because these sites had abundant forage and dense understory cover that concealed their young from predators. Additionally, females utilized roadside salt licks more often than males during summer and autumn. Males occupied upland hardwood stands during summer in an apparent effort to avoid heat stress and maximize forage intake. Habitat characteristics of both sexes were similar during winter when resource needs were probably equivalent, and the quality and distribution of forage were more homogenous.

3

Trace metals in auto- and semihydrogenic soils found in three forest site types of Bialowieza National Park

88%

Gworek B., Degorski M., Brogowski Z.

Polish Journal of Environmental Studies

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1999

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tom 08

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nr 5

The aim of this work was to determine the content of Mn, Zn, Cu, Pb, Cr, Ni and Cd in auto- and semihydrogenic soils of Bialowieza National Park and to find relationships between their occurrence and litho- and pedogenic features of these soils. Basing on geometric mean contents of the elements studied a quantitative series of their occurrence was established as follows: Mn (297) >Zn (29) >Cr (16) >Pb (12) >Ni (10) >Cu (8.0) >Cd (0.29) mg kg-1 d.w The distribution of the above trace elements in soil profiles is linked to the direction of progress of the soil forming processes and, to some extent, to the variability of soil texture (especially in not completely developed soils). In general, the mineral-organic (A) horizons were least abundant in Cr, Ni, Cu, Zn and Cd, followed by the illuvial (Eet) and bedrock (C) horizons of the soils studied. Statistical analysis shown a significant correlation between contents of Cr, Ni and Zn and clay and colloidal particle amounts as well as between the content of Pb and the amount of organic carbon

4

Aesthetic and landscape values of forests

88%

Zarska B.

Annals of Warsaw Agricultural University. Horticulture

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2000

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tom 21

5

Orchidaceous beech forests in the Gory Krowiarki Range [Eastern Sudety Mountains]

88%

Matuszkiewicz J. M., Kozlowska A.

Fragmenta Floristica et Geobotanica

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2000

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tom 45

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nr 1-2

6

Problems of management of non state forests

88%

Zihlavnik A., Marusak R.

Roczniki Akademii Rolniczej w Poznaniu. Leśnictwo

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2001

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tom 39

7

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Diversity of ancient woody species in urban forests

75%

Fornal-Pieniak B., Ollik M., Zaras-Januszkiewicz E., Zarska B.

Folia Forestalia Polonica. Series A . Forestry

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2014

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tom 56

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nr 2

Mostly parks and forest are the most important ‘green islands’ in urban ecological network. Urban forests are belong to green areas and collected many plant species. The main aim of the article was characteristic of ancient plant species in urban forests in Tarnów. The field studies were carried out in years 2011–2012. It covered 80 phytosociological records on the area 500 m2 in herb layer of urban forests and in forest nature on oak-hornbeam. The results showed that many ancient plant species were growing in urban forest but less than in nature reserves.

8

Valdivelater, a new genus of Protelaterini (Elateridae: Lissominae) from the forests of central and southern Chile

75%

Lawrence J. F., Arias E. T.

Annales Zoologici

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2009

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tom 59

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nr 3

Valdivelater gen. nov., with two included species, V. krahmeri sp. nov. and V. oneolensis sp. nov. are described from the Valdivian region of Chile. The relationships of this genus to other Protelaterini and the position of the tribe within the family Elateridae are discussed, and a key to protelaterine genera and related tribes is provided. Resumen.— Se describe Valdivelater gen. nov., el cual incluye dos especies V. krahmeri sp. nov. y V. oncolensis sp. nov. del Centro Sur de Chile. Se discuten las relaciones de este y otros géneros de Protelaterini, y su posición sistemática en la familia Elateridae, se proporciona además una clave de los géneros de Protelaterini y de las tribus relacionadas con este.

9

Is natural regeneration of forest stands a continuous process? A case study of an old-growth forest of the Western Carpathians

75%

Szwagrzyk J., Szewczyk J.

Polish Journal of Ecology

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2008

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tom 56

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nr 4

623-633

Natural regeneration in temperate forests is known to be distributed unevenly, forming dense clumps or patches of young trees confined often to canopy gaps. However, in some studies no significant relationship between the presence of gaps and advanced regeneration was found. The analysis of the relationship between tree stand density and young trees density and growth rates was conducted to check if oldgrowth temperate forests with numerous canopy openings permit development of young trees throughout the forest floor, not only directly under canopy gaps. The study was conducted in an old-growth stand of Fagus sylvatica L., Abies alba Mill. and Picea abies (L.) Karst. in the Babia Góra National Park (Western Carpathians, Poland). The elevation is 940–1010 m a.s.l., slope inclination varies from 2 to 40%, mean annual temperature for that area is 4°C and annual precipitation amounts to 1300–1400 mm. Stand basal area in the study plot has increased from 38 m² ha⁻¹ in 1991 to 40.7 m² ha⁻¹ in 2004, and canopy openness has decreased from 15.6% in 1996 to 9.3% in 2003. Saplings were totally dominated by European beech; during 13 years of study sapling density has increased by 50%, along with the sum of sapling heights (from 0.79 mm⁻² to 1.59 mm⁻²) and the mean height (from 1.42 m to 2.46 m). The increase in sapling sizes strongly varied among individuals within plot and was only weakly related to the relative light intensities measured at the individual plot level (for sums of diameters t = 0.293, P > 0.05). The development of young generation of trees in the study area seems to support the “medium disturbance” hypothesis, with a non-continuous regeneration triggered by external disturbance, and several tree recruitment episodes during the lifespan of canopy trees.

10

The preservation status of the lichen biota in the designed Special Area of Conservation NATURA 2000 "Middle Lyna River Valley - Smolajny"

75%

Kubiak D., Czarnota P., Zdunczyk A., Dynowska M., Lesnianski G., Cyganska A., Olszewska S., Sadowska-Des A., Wojdal P.

Acta Mycologica

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2014

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tom 49

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nr 1

The paper presents the list of 159 taxa, including 151 lichens and 8 saprotrophic or parasitic (lichenicolous) fungi, recorded in the designed Special Area of Conservation NATURA 2000 „Middle Łyna River Valley – Smolajny” (the Forest Division of Wichrowo). The analysed area (2953 ha) covers mostly forest communities, with natural character, associated with the valley of the Łyna river (hillside lime-oak-hornbeam forests, streamside alder-ash forest, riparian black alder forest).

11

Podatek lesny

75%

Ralowska Z.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

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1999

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nr 12

19

12

Turkey oak (Quercus cerris L.) in Polish forests

75%

Danielewicz W., Kicinski P., Antosz L.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2014

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tom 13

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nr 2

The Turkey oak (Quercus cerris L.) is one of the least known species of trees of alien origin introduced to forests in Poland. Its natural geographical range embraces southern Europe and Asia Minor. It started to be grown on the Polish lands in 1813, planted primarily in parks and gardens, mostly in the western part of the country. On the basis of the present authors’ own field search, the literature, and unpublished data, it was possible to collect information about 22 places of occurrence of the Turkey oak in the woodland areas of Poland. A map of the distribution of this species is presented and the characteristics of its most extensive localities in forests are given. The oldest and most robust tree stands comprising Quercus cerris, planted in the fertile riverside habitats of the Oder river valley, have reached the age of 130-150 years. In those conditions the Turkey oak attains a height of 37 m and a breast-height diameter of up to 120 cm. Because of frequent frost damage and a low quality of trunks, it is of no productive significance in forestry. Even so, it is an interesting example of an alien oak species which, like the well-known Q. rubra, shows the ability to expand in a woodland environment.

13

Ehffectivnost' tekhnicheskojj ehkspluatacii lesnykh MES

75%

Titova L., Rogovskijj I.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2014

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tom 16

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nr 3

14

Small scale conservation status in forests - source of bark beetle problems?

75%

Zolubas P., Dagilius R.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2012

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tom 11

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nr 1

Using GIS techniques, spruce bark beetle Ips typographus (L.) damage was analysed against distance from the edge of small spruce stands with strict protection regime; for reference damage nearby managed spruce stands was used. Mean volume of spruce timber, harvested with sanitary fellings was significantly higher near spruce stands with strict conservation status (14.7 ±2.1 to 17.0 ±3.8 m3/ha) than in the vicinity of managed control sites (9.9 ±0.4 to 11.5 ±0.8 m3/ha). Under endemic spruce bark beetle population levels strict conservation regime in small areas (forest woodland key habitats of average 3.7 ha size) was found to be Ips typographus hazard for adjacent spruce forests up to 450 m distance.

15

Epigeic entomofauna of beetles on the join of forest and field

75%

Wegorek W., Trojanowski H.

Prace Naukowe Instytutu Ochrony Roślin

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1989

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tom 31

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nr 2

16

Optimizing the age of final cutting in normal- and intentional- forest

75%

Klocek A.

Folia Forestalia Polonica. Series A . Forestry

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1990

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tom 32

17

Constitutive and induced chemical defenses against insect grazing on leaves of forest understory shrubs

75%

Zmuda M., Karolewski P., Giertych M. J., Oleksyn J.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

18

Spatial structure of managed beech-dominated forest: applicability of nearest neighbors indices

75%

Szmyt J.

Dendrobiology

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2012

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tom 68

High structural diversity is often attributed to old-growth forests, usually established naturally and unmanaged. Forest diversity should be considered not only in terms of species diversity and richness but also the variation in trees dimension and their spatial distribution have to be taken into consideration. The main goal of this paper was the answer if nearest neighbor indices are suitable for spatial forest structure description. To answer this question results obtained from 3 managed beech-dominated forests from natural regeneration are presented and discussed. The following indices were calculated: Clark-Evans aggregation index (R), DBH and height differentiation indices (TD and TH, respectively) and mingling index (DM) analyzing horizontal and vertical spatial structure of the forest. Results indicated that managed beech forests demonstrated rather homogenous spatial structure in both aspects. Living trees as well as future crop trees were mostly regularly distributed. Spatial variation in DBH and height between living nearest neighbors was rather low. The lowest variation in sizes was demonstrated by future crop trees. Mature beech forests revealed single species structure and other tree species – if present – were spatially segregated from beech. It can be supposed that high homogeneity structure of these forests results from biological characteristics of this species as well as thinning treatments conducted by foresters.

19

Comparison of four methods for estimating relative solar radiation in managed and old-growth silver fir-beech forest

75%

Rozenbergar D., Kolar U., Cater M., Diaci J.

Dendrobiology

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2011

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tom 65

Methods based on the principle of hemispherical canopy projection, including hemispherical photography (digital andfilm), sensors like LAI 2000 (zenith cutoff anle 74,1°) andstable horizontoscope, represent less accurate, yet significantly less expensive andtime-consuming techniques for radiation measurements comparedto long-term measurement with a network of photosynthetically active radiation (PAR) sensors. With measurements taken at a single point in time they can provide reliable estimates of relative diffuse andd irect solar radiation andcan also be usedto estimate the light climate in different times of the year. The four above mentioned methods for solar radiation estimation were applied at the same points in gaps and under adjacent canopies in unevenaged, mixed Dinaric fir-beech and pure beech montane forests. Locations covereda range of radiation andstandstructure conditions. Data analyses showedgoodreliability of all four methods over the whole range (2–80%) of radiation conditions. The most comparable results come from LAI 2000 andfilm hemispherical photography (all R > 0.90). Digital hemispherical photography is an accurate andreliable (R = 0.89) replacement for film hemispherical photography, but the higher values estimatedfor direct radiation should be taken into account. Compared to the other three methods, the stable horizontoscope gives less accurate results, especially under canopies with poorly defined gaps. Our study showed that all four methods tested are suitable for estimating the solar radiation climate in gaps and stands with heterogeneous vertical structures, andhave potential value as a tool in decision making when practicing silviculture.

20

Seed morphology of the native species of the genus Ribes L. Part 2. The characteristics of individual species

75%

Wronska-Pilarek D.

Acta Societatis Botanicorum Poloniae

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2002

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tom 71

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nr 1

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