Wyniki wyszukiwania - Biblioteka Nauki

1

Eemian and Vistulian pollen records from the Łomża region (NE Poland)

100%

Bińka K. , Ber A. , Bałuk A.

Geological Quarterly

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2006

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tom Vol. 50, No. 4

437-446

EN

In the Łomża region, northeastern Poland, many new lacustrine and peat deposits have been found. Pollen analysis of borehole material shows that they accumulated mostly during the Eemian Interglacial. Parts of these sites were active in the Vistulian, probably in its early phases. The sites analysed usually represent small lakes or peat-bogs sediment with accumulating in different time intervals of the Eemian. Only exceptionally they are represented by deep-water facies with a decrease in water level not before the hornbeam zone, as seen at many Eemian sites in Poland. Especially interesting is the occurrence in the pollen spectra of a number of exotic taxa such as Viburnum lantana, Bruckenthalia spiculifolia, Falcaria vulgaris, Lycopodium lucidulum t. noted previously in the Eemian Interglacial mainly in the south and in the southeastern Poland, where milder climatic conditions prevailed. The analysed interglacial spectra also show signs of plant—animal interaction. Such signs have been observed in Holocene and Vistulian strata, although in other pollen taxa. Pollen affected by these processes may come to resemble other species and so be misidentified.

2

Effect of restricted pollen supply to colonies on the quality of reared queen bees

100%

Chuda-Mickiewicz B. , Samborski J.

Acta Scientiarum Polonorum. Zootechnica

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2019

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tom 18

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nr 3

3

A 90 m-thick coal seam in the Lubstów lignite deposit (Central Poland): palynological analysis and sedimentary environment

100%

Durska E.

Geological Quarterly

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2008

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tom Vol. 52, No 3

281-281

EN

A 90 m-thick brown coal seam, the result of organic matter deposition in a fault-trough, is exploited in an open cast mine at Lubstów (Central Poland). Palynological analysis was conducted in order to determine which plants were the source of or ganic matter forming such a thick coal bed. The pollen spectrum is dominated by the gymnosperm pollen Inaperturopollenites, produced by trees closely related to the extant genera Taxodium and Glyptostrobus, the dominant constituents of swamp forests in SE North America and SE Asia today. However, the lack of xylites and preserved tissues in the coal does not support the conception of a swamp forest as the peat-producing community. There is also a significant percent age of angiosperm pollen in the coal, mainly from the groups: Castaneoideapollis, Tricolporopollenites exactus and T. pseudocingulum. The plants producing these pollen were probably the main constituent of the peat-producing community. The community shows signs of a shrub swamp with local tree islands and a low water table. Evidence for this also includes the de trital type of coal, the lack of preserved plant tissues and the presence of fungal remains. These character is tics show the existence of aerobic zones at the time of peat production. The peat was probably derived from angiosperms. Dome-shaped forms in the up per part of the de posit are the re mains of tree is lands. As de tri tus ac cu mu la tion is very rapid on the sur faces of pres ent-day tree is lands, a sim i lar rate of de po si tion may have taken place dur ing peat pro duc tion at Lubstów. This, com bined with sub si dence in the fault-trough, ex plains the great thick ness of the coal bed.

4

Pollen-dominated European palynological assemblages from the Permian of NW Turkey (Asia Minor) palaeogeographical context and microfloral affinities

88%

Stolle E.

Geological Quarterly

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2011

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tom Vol. 55, No. 2

181-186

EN

Palynological assemblages from the Camdag area of NW Turkey are analysed quantitatively and qualitatively. All preparations logged from different palynomorph sampling sections show high ratios of pollen. Within the pollen fraction percentages of up to 71% for the bisaccate pollen Lueckisporites Potonie and Klaus 1954 are remarkable. This pattern is reminiscent of palynofloras described from the Upper Permian of Europe. This enables the study area to be shown in its palaeogeographic context, and constrains interpretation of microfloral affinities, palynostratigraphy, and depositional environment. The palaeoenvironmental model clearly indicates deposition within the hinterland, corroborating previous interpretations.

5

Formation of Generative Organs of Switch-Grass (Panicum virgatum L.) Depending on Cultivation Conditions

88%

Dryha V. , Doronin V. , Sinchenko V. , Karpuk L. , Mykolaiko V. , Topchiy O.

Ecological Engineering & Environmental Technology

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2023

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tom Vol. 24, iss. 4

210--215

EN

The paper covers the issues of the formation of the generative organs of switch-grass plants (Panicum Virgatum L.) in the correlation with the varietal features and the weather conditions in an inter-phase period of "flowering-seed formation". Switch-grass is one of the most promising perennial cereal plants to produce bio-fuel. Widespread introduction into production is held back by low seed emergence, which is due to its large dormancy state. Therefore, to study the causes of this phenomenon and the ways to reduce it is of a real relevance. In the vegetation years, the size of pollen grains ranged from 22.9 to 23.6 mkm depending on the varietal features and the weather conditions in a phase of flowering and pollen formation. A significant difference in a pollen size in a correlation with the varietal features was not recorded; the tendency towards the increase or decrease of its size was seen though. In the years under study, the sizes of pollen grains changed under the effect of weather conditions, it occurred even within one cultivar. The pollen of all the cultivar samples had the smallest size in 2018 and 2019; and in the vegetation years of 2020-2021 the average pollen sizes were much larger for all cultivars than in 2018 and 2019. Over the years under study, on the average, no significant difference in the sizes of embryo and seed, depending on the varietal features, was recorded. The growing weather conditions had a significant effect on the sizes of embryo and seeds, their length and width, and it amounted to 98-100%. The most favorable weather conditions for the processes of flowering and seed formation were created in 2019, as compared with those in 2020 and 2021, which ensured the formation of larger sizes of both embryos and seed in all the cultivars. The correlation-regression analysis of the data showed a strong linear correlation between the length and the width of embryo and the weather conditions in a phase "flowering-formation" of seed with a determination coefficient R2 = 0.9163 and a correlation coefficient R = 0.96 for the length of embryo and R2 = 0.9613 and a correlation coefficient R = 0.98 for the width of embryo.

6

Vegetation and climate changes during merkine interglacial (Eemian) in Lithuania

88%

Seiriene V. , Kondratiene O.

Polish Geological Institute Special Papers

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2005

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tom Vol. 16

103--108

EN

The main features of vegetation and climate changes during Merkine Interglacial (Eemian) are discussed in the paper. Pollen data of about 34 sections were used in this study. Calculated climatic parameters indicate warmer and damper climate during the climatic optimum than at present in Lithuania. The mean year temperature fluctuated from +11 to +13 stopni C, mean January temperature from +1 to -1stopni C and mean July temperature - from +22 to +23 stopni C. Number of precipitation’s ranged from 1080 to 1100 mm. The natural vegetational changes took place during the climatic optimum, climatic changes played an insignificant role.

7

Late Pleistocene vegetational and soil evolution at the Kiev loess plain as recorded in the Stari Bezradychysection, Ukraine

88%

Gerasimenko N.

Studia Quaternaria

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2000

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tom Vol. 17

19-28

EN

Pollen and paleopedological studies have been carried out in parallel for the Stari Bezradychy sequence of the Upper Pleistocene age. The paleoenvironmental information derived from both sets of data is in general well correlated. The section presents a rather complete sequence of the last interglacial-glacial cycle. It includes eight units of the Ukrainian Stratigraphical Framework of the Pleistocene. Interglacial climatic optimum is registered by pollen succession of the Mikulino (Eemian) type in the climax forest paleosols of Pryluky-Kaydaky pedocomplex at the base of the sequence, above the Dnieper Glacial deposits. The coldest and most continental environment is recorded in the youngest loess. The soils of Upper Pryluky, Vytachiv and Dofinivka units are correlated with the Early Glacial and four Pleniglacial interstadials. Multiple environmental variations during the Upper Pleistocene recorded in the Stari Bezradychy sequence are important for study of global climatic changes and interregional correlation. Tentative correlation with marine isotopic stages is proposed.

8

Late Pleistocene loess-paleosol and vegetation successions at tarnawce (san river valley, carpathian foothills, Poland)

88%

Komar M. , Łanczont M.

Studia Quaternaria

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2002

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tom Vol. 19

27--36

EN

The Tarnawce 1 profile, which occurs in the marginal eastern part of the Polish Western Carpathians, contains loesses representing three last glacial cycles. In this paper we report the results of pollen analysis of the Eemian -Early Glacial pedocomplex and of the Lower pleni-Vistulian loesses with an interstadial paleosol. The pollen spectra of 22 samples were determined. The pollen diagram was divided into 7 local pollen assemblage zones (L PAZ). Interglacial climatic optimum was recorded with the Eemian type of vegetation in the T-4 zone. The coldest conditions occurred during the accumulation of loess, which separates the interglacial and interstadial soils.

9

Early vistulian deposits at Swinna Poręba, western outer carpathians (s. Poland)

88%

Bińka K. , Grzybowski K.

Studia Quaternaria

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2001

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tom Vol. 18

11-16

EN

Alluvial and oxbow deposits preserved 18 m above the Skawa River valley floor are related to the Early Vistulian. Pollen analysis of the two mainly terrestrial profiles revealed a boreal forest succession. The age of the deposits is discussed.

10

Apiaceae - contribution to the flora history in light of Pollen analysis with a special reference to the Holocene site at Błędowo (Central Poland)

88%

Bińka K.

Studia Quaternaria

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2003

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tom Vol. 20

35-60

EN

Pollen grains of Apiaceae from the profile at Błędowo, Mazovia region, Central Poland were identified. Pollen of this family occurs in higher frequencies in the Late Glacial, the beginning of the Holocene and in the periods under strong human influence. Transfer of pollen of Apiaceae from plants to lake deposits is different for particular species and depends rather on insect activity during the season as well as on the activity of their predators and/or the oscillation of animal populations than the selectivity in insect feeding. Different environmental conditions around the sites, which result in various patterns of transfer agents can cause some difficulties in interpretation of vegetational changes inferred from pollen data.

11

Micromorphological study (ultrastructure of lamina surface, seeds, ultrasculpture of pollen grains) ofGladiolusL. species (IridaceaeJuss.) of Ukrainian flora

88%

Zhygalova S. L. , Futorna O. A. , Levanets A.

Environmental & Socio-economic Studies

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2014

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tom 2

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nr 4

21-27

EN

Micro-morphological characteristics of the four Gladiolus L. species of the Ukrainian flora (G. imbricatus L., G. italicus Mill., G. palustris Gaudin and G. tenuis M. Bieb.) as regards leaves, seeds and pollens are presented with this investigation in a detailed way. An examination of the surface structure of the leaves, seeds and pollen grains of the Gladiolus species indicates that the characteristics of the ultrastructure of leaves and of pollen grains are not diagnostic for distinguishing species, but they could be important at genus level (leaves: features such as being amphistomatic, having the same quantity of immersed stomata on both surfaces and having a high stomata index, the presence and localisation of papillae, the shape of epidermal cells; pollen grains: monosulcate type with two operculums). However, the type of surface ultrastructure of the seed coat is a diagnostic feature as at genus level so for species. It can be mentioned that propose the use of features such as the shape and position of the cicatricle, the type of cuticle, the shape and boundaries of cells of testa, and the anticlinal cell walls as diagnostic features at genera level. The shape of seeds, the presence and disposition of wing, the level of the periclinal cell walls of the seed coat and types of relief are additional diagnostic features for distinguishing of Gladiolus species.

12

Vegetation and climate of the Butënai Interglacial (Holsteinian) in Lithuania

88%

Kondratiené O. , Šeiriené V.

Geological Quarterly

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2003

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tom Vol. 47, No 2

139-148

EN

Palaeobotanical (mainly palynological) data from 38 sections of Lithuania and adjacent areas were used in order to resolve some palaeogeographical problems. The Butënai Interglacial (Holsteinian) had one distinct climatic optimum, represented by the B2–B4 pollen zones. This was a period of warm and wet climate with notable mild winters. The average annual temperature might have been 2–4ºC warmer and the annual precipitation some 300 mm greater than at present in Lithuania. There was probably no permanent snow cover during winters. Isopollen maps for the main forest constituents allow deduction of the directions of migration of individual tree taxa.

13

Differences in the structure of pollen in the ‘Senga Sengana’ and ‘Selva’ cultivars of Fragaria × ananasa

88%

Borkowska I. , Domaciuk M. , Bernat M.

Agronomy Science

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2020

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tom 75

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nr 4

14

Non-pollen palynomorphs from mid-Holocene peat of the raised bog Borsteler Moor(Lower Saxony, Germany)

88%

Shumilovskikh L. S. , Schlütz F. , Achterberg I. , Bauerochse A. , Leuschner H. H.

Studia Quaternaria

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2015

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tom Vol. 32, Nr 1

5--18

EN

In order to reconstruct regional vegetation changes and local conditions during the fen-bog transition in the Borsteler Moor (northwestern Germany), a sediment core covering the period between 7.1 and 4.5 cal kyrs BP was palynologically investigated. The pollen diagram demonstrates the dominance of oak forests and a gradual replacement of trees by raised bog vegetation with the wetter conditions in the Late Atlantic. At ~ 6 cal kyrs BP, the non-pollen palynomorphs (NPP) demonstrate the succession from mesotrophic conditions, clearly indicated by a number of fungal spore types, to oligotrophic conditions, indicated by Sphagnum spores, Bryophytomyces sphagni, and testate amoebae Amphitrema, Assulina and Arcella, etc. Four relatively dry phases during the transition from fen to bog are clearly indicated by the dominance of Calluna and associated fungi as well as by the increase of microcharcoal. Several new NPP types are described and known NPP types are identified. All NPP are discussed in the context of their palaeoecological indicator values.

15

Reinvestigation of the interglacial pollen flora at Zbójno, Central Poland

88%

Binka K.

Studia Quaternaria

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2010

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tom Vol. 27

35-41

EN

The interglacial deposits at Zbójno near Radoszyce (central Poland) was drilled again and reinvestigated by means of pollen analysis. The pollen succession, partly recorded in subaerial sediments with many stratigraphic gaps, treated hitherto as the stratotype of Zbójnian interglacial, does not seem to differ from the Eemian sequence, and may actually be of the Eemian age. This strongly suggests that the term "Zbójno" should be removed from the Polish Pleistocene stratigraphy.

16

Lectins in plant reproductive organs

88%

Kovaleva L. , Komarova E.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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1999

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tom 41

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nr 1

17

Storage of strawberry pollen

88%

Aslantas R. , Pirlak L.

Acta Agrobotanica

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2001

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tom 54

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nr 2

EN

This study was carried out to determine storage ability of strawberry pollen at different temperatures for three different strawberry cultivars 'Aliso', 'Brio', and 'Cruz' . Strawberry pollen was stored at room temperature (22 ± 2 oC), +4 0C, -4 0C and -18 0C in stabile humidity conditions. Strawberry pollen was germinated using the hanging drop method in a 20% sucrose solution. Pollen germination rate increased because of low temperature storage. Pollen stored at room temperature and +4 0C, -4 0C, and -18 0C was kept for 8 months, about one year, and 20 months, respectively. Pollen germination rates decreased as the length of storage period increased. The reaction of all cultivars tested on the duration and temperature of storage was similar.

PL

Określano zdolność do przechowywania pyłku truskawki odmian 'Aliso', 'Brio' i 'Cruz' w zależności od temperatury. Badania prowadzono w temperaturze pokojowej (22 ± 2° C), + 4°C, - 4° C i -18° C w warunkach stabilnej wilgotności. Kiełkowanie pyłku badano w wiszącej kropli 20% roztworu sacharozy. Niska temperatura zachowywała zdolność pyłku do kiełkowania, ale jego tempo zmniejszało się przy przedłużeniu okresu przechowywania. Pyłek przechowywany w temperaturze pokojowej i + 4o C zachowywał zdolność kiełkowania przez okres około 8 miesięcy, w temperaturze -4° C - przez około roku, a w temperaturze -18° C - przez 20 miesięcy, niezależnie od odmiany.

18

Analysis of the free amino acid content in pollen of nine Asteraceae species of known allergenic activity

88%

Mondal A. K. , Parui S. , Mandal S.

Annals of Agricultural and Environmental Medicine

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1998

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tom 05

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nr 1

19

Post-glacial vegetation and environment of the Labanoras Region, East Lithuania: implications for regional history

75%

Gaidamavičius A. , Stančikaite M. , Kisieliene D. , Mažeika J. , Gryguc G.

Geological Quarterly

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2011

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tom Vol. 55, No. 3

269-284

EN

Multiproxy data (pollen, plant macrofossils, 14C dates and loss-on--ignition measurements) obtained from the Bevardis and Verpstinis lakes in the Labanoras area (East Lithuania) were used to reconstruct a vegetation history and to reveal major environmental features during post-glacial time. Biostratigraphical data indicates ongoing sedimentation in Verpstinis Lake since the final stages of the AllerÝd. The pollen data shows that Pinus-dominated forest flourished during the AllerÝd, while the Younger Dryas was characterized by open shrub/herb/grass vegetation with highly abundant Juniperus. These are evidences of severe climatic conditions in the area. The 14C data suggests that sedimentation started in Bevardis Lake with the onset of the Holocene. Picea immigrated into the Verpstinis Lake surroundings in the Late Glacial, just before 11 500 cal yr BP according to the palynological evidence. The expanding deciduous taxa, e.g., Corylus (ca. 10 200-10 000 cal yr BP), Alnus (8200-8000 cal yr BP), and broad-leaved species with Ulmus (ca. 10 000 cal yr BP), Tilia (7700-7400 cal yr BP) and Quercus (5200 cal yr BP), formed a dense mixed forest where Picea appeared at 7300-6800 cal yr BP. Both diagrams show only negligible human impact. It seems that natural factors were responsible for the formation of vegetation cover and environment in the study area throughout the post-glacial.

20

A multidisciplinary study on the palaeoenvironmental history of the Resko Przymorskie Lake spit during the Late Glacial and Holocene (the southern Baltic coast, NW Poland)

75%

Sydor P. , Krzymińska J. , Rzodkiewicz M. , Kotrys B.

Geological Quarterly

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2015

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tom Vol. 59, No. 3

531--550

EN

The paper presents the results of sedimentological and biostratigraphical analyses from the Resko Przymorskie Lake spit (NW Poland), supported by radiocarbon datings. The study has aimed to recognize the geological structure of the spit and its base and to recognize the palaeoenivronmental changes. Nine sedimentary series composing the Resko Przymorskie Lake spit have been distinguished (I–IX). The oldest sediments are the Vistulian Glaciation till (series I) and fluvioglacial sand and gravel (series II). In the Early Holocene, in the study area there was a river valley (series III) followed by a shallow water basin (series IV), which was replaced by a peat bog (series V). In the Atlantic (7.4 ka cal BP), the water level rose (Littorina transgression) and accumulation of lagoonal sediments started (series VI). Biostratigraphic analysis of deposits in series VI indicates a marine influence. In the Atlantic and Subboreal, the spit moved southwards and fine sand (series VII) was deposited on lagoonal gyttja and silt (series VI). In the western part of the study area, peat accumulated (series VIII), dated at 6.7 ka cal BP (Late Atlantic). The youngest series IX is composed of aeolian fine sand in white dunes that formed in the last 400 years.