Wyniki wyszukiwania - AGRO

1

Fish egg size variability biological significance

100%

Bonislawska M., Formicki K., Korzelecka-Orkisz A., Winnicki A.

Electronic Journal of Polish Agricultural Universities. Series Fisheries

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2001

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tom 04

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nr 2

The results showed the eggs of various species to differ both in terms of their dimensions and volume, the differences being 5 and more than 70fold, respectively.

2

Variability of the air temperature in Central Europe in the years 1792-1995

100%

Trepinska J., Ustrnul Z., Kowanetz L.

Geographia Polonica

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1997

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tom 70

3

Variability of water resources flowing away from small agricultural catchment

88%

Kanownik W., Kowalik T.

Polish Journal of Environmental Studies

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2010

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tom 19

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nr 1

65-71

Monthly, seasonal and annual values for outflow and outflow coefficient measured over ten years for a small agricultural catchment are presented. The catchment is situated at 723-822 m a.s.l and covers 40.57 ha. Mean annual precipitation total during the investigated period was 850 mm and mean annual air temperature was 5.9oC. Average annual overall outflow from the catchment was 446 mm, i.e. 52% of total precipitation. The outflow varied considerably in relation to rainfall/snowfall/snowmelt conditions. The highest monthly outflow was in March and the lowest in November (20.6% and 3.8% of the annual outflow, respectively). Considerable variability of the outflow from the catchment is caused mainly by frequent torrential rains in summer and infiltration of water into groundwater reserves during spring snowmelt.

4

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Indian Ocean wind speed variability and global teleconnection patterns

88%

Sinha M., Jha S., Chakraborty P.

Oceanologia

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2020

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tom 62

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nr 2

5

Variability of arterial vascularization of the human lacrimal gland

88%

Fiedor P., Ptasinska-Urbanska M., Makomaska-Szaroszyk E.

Folia Morphologica

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1989

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tom 48

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nr 1-4

6

Variability of precipitation in selected regions of the Carpathians in the years 1951-1995

88%

Cebulak E.

Geographia Polonica

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1997

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tom 70

7

Genetic analysis of variability and combining ability of rye hybrid cultivars

88%

Grochowski L., Kaczmarek J., Kadlubiec W., Bujak H.

Plant Breeding and Seed Science

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1996

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tom 40

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nr 3-4

8

Morphological, biological and biochemical characterization of 31 strains of Microdochium nivale [Fusarium nivale]

88%

Maurin N., Lamkadmi Z., Some A.

Hodowla Roślin, Aklimatyzacja i Nasiennictwo

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1993

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tom 37

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nr 1-2

9

20th-century variability to daily maxima and minima of air temperature in the Sudetic Mountains

88%

Glowicki B.

Geographia Polonica

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2000

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tom 73

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nr 2

10

Variability of the South Shetland Islands geoecosystem

88%

Rakusa-Suszczewski S., Kidawa A.

Geographia Polonica

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1997

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tom 70

11

Variability of the reproductive system of Piscicola fasciata [Kollar, 1842 [Hirudinea, Piscicolidae]

88%

Bielecki A., Daczewska M., Saczko J., Pietrykiewicz Z.

Wiadomości Parazytologiczne

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2000

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tom 46

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nr 3

The studies on the reproductive system of P. fasciata were based on 43 specimens. Two main types of the reproductive system can be distinguished in the studied population. Two types of reproductive system were the most frequent (20.93% each): with symmetrical ejaculatory ducts without a loop and symmetrical seminal vesicles reaching the end of the first pair of testes, situated next to the testes (adult individuals) (fig. 23) and with symmetrical ejaculatory ducts without a loop (fig. 21) and symmetrical poorly developed seminal vesicles situated asymmetrically anterior to the first pair of testes (juvenile individuals). The structure of the reproductive system corresponding with the description of the type specimen (BRUMPT, 1900) was not observed in the studied population.

12

Digitali purpureae-Epilobietum in the Czech Republic

88%

Neuhauslova Z., Hartel H.

Polish Botanical Journal

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2001

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tom 46

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nr 2

13

Variability of seeds of the invasive species Impatiens glandulifera Royle (Balsaminaceae) and their micromorphology

75%

Maciejewska-Rutkowska I., Janczak B.

Steciana

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2016

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tom 20

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nr 4

The aim of the work was to estimate the range of morphological variability of seeds of the Himalayan balsam (Impatiens glandulifera), from different sites within Poland. It was also verified whether there was a correlation between morphological variability of seeds and type of vegetation from which they originated. Additionally, the seed coat ultrastructure of this species was studied. Biometrical analysis showed remarkable variability of seed morphology. A significant relationship between seed size and type of vegetation was also revealed. However, there was no clear relationship between seed mass and type of vegetation. Based on the structure and ornamentation of epidermal cells, the rugosely ruminate seed coat type was proposed.

14

Variability of measurements' features of the neurocranium in human fetuses

75%

Ziolkowski M., Kurlej W.

Folia Morphologica

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1986

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tom 45

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nr 2

15

State-space estimation of soil organic carbon stock

75%

Timm L. C., Ogunwole J. O., Obidike-Ugwu E. O., Gabriels D. M.

International Agrophysics

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2014

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tom 28

|

nr 2

Understanding soil spatial variability and identifying soil parameters most determinant to soil organic carbon stock is pivotal to precision in ecological modelling, prediction, estimation and management of soil within a landscape. This study investigates and describes field soil variability and its structural pattern for agricultural management decisions. The main aim was to relate variation in soil organic carbon stock to soil properties and to estimate soil organic carbon stock from the soil properties. A transect sampling of 100 points at 3 m intervals was carried out. Soils were sampled and analyzed for soil organic carbon and other selected soil properties along with determination of dry aggregate and water-stable aggregate fractions. Principal component analysis, geostatistics, and state-space analysis were conducted on the analyzed soil properties. The first three principal components explained 53.2% of the total variation; Principal Component 1 was dominated by soil exchange complex and dry sieved macroaggregates clusters. Exponential semivariogram model described the structure of soil organic carbon stock with a strong dependence indicating that soil organic carbon values were correlated up to 10.8m.Neighbouring values of soil organic carbon stock, all waterstable aggregate fractions, and dithionite and pyrophosphate iron gave reliable estimate of soil organic carbon stock by state-space.

16

The variability of natural populations of Brachypodium pinnatum and B. sylvaticum based on morphological features

75%

Paszko B.

Acta Societatis Botanicorum Poloniae

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2008

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tom 77

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nr 3

255-262

The morphological diversity in 25 populations of two native species of Brachypodium occurring in Poland, was studied. Principal component analysis and cluster analysis of morphometric data segregate specimens or populations of Brachypodium into two groups, corresponding to the two species. In most of morphological characters, B. pinnatum and B. sylvaticum are similar to each other. However, in terms of characteristics, such as the hairiness of culms and leaf-sheaths both can also vary much within a single population. In comparison with B. pinnatum, B. sylvaticum always has pubescent abaxial palea surfaces. Apparent differences were not detected between the two ecotypes of B. pinnatum named "Grassland" and "Woodland".

17

Variability of macro- and trace elements content in winter savory

75%

Muller I. D., Kremer D., Vujic L., Cepo D. V.

Polish Journal of Food and Nutrition Sciences

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2011

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tom 61

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nr Suppl.1

18

The variability of macrophyte metrics used in river monitoring

75%

Szoszkiewicz K., Zbierska J., Staniszewski R., Jusik S.

Oceanological and Hydrobiological Studies

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2009

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tom 38

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nr 4

117-126

19

Variability of morphological characteristics of middle-European bees of the ‘Northern M’ line

75%

Madras-Majewska B., Skonieczna L.

Medycyna Weterynaryjna

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2018

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tom 74

|

nr 11

The aim of the study was to evaluate the variability of morphological characteristics of native middleEuropean bees (Apis m. mellifera) of the ‘Northern M’ line. The research covered characteristics of breed (the length of proboscis, the cubital index), body size (the width of tergite 4 and the sum of widths of tergites 3 and 4) and wing size (length and width). The study compared bees harvested from a leading apiary and from collaborating apiaries participating in a program for the protection of genetic resources of bees of this line. The material for the study was harvested in 10 consecutive years. The samples were collected by the “cluster drawing” method (the multi-stage method of clustering described by Zee et al. in 2013). Each sample consisted of 25 to 30 bees. The frames were loaded in an instrument for the morphological measurement of bees (Apimeter). Seven measurements were taken on prepared body parts of each bee. The length and width of the wing and the length of the cubital vein were measured on the right front wing (hereinafter referred to as the “wing”). In addition, the width of abdominal tergites 3 and 4 and the length of proboscis were measured in each instance. In total, 4291 bees were harvested and 30 037 measurements were taken. The conclusion is that the program for the protection of genetic resources of bees of the ‘Northern M’ line can be implemented in Poland based on the leading apiary and on the collaborating apiaries, and bees of this line display characteristics of middleEuropean bees. Moreover, the study demonstrated a consistency of values of the studied characteristics of the ‘Northern M’ line with the applicable references of morphological characteristics for Apis m. mellifera. In addition, based on a review of results of the author’s research and based on collected literature originating from the 1960s, the study proves that a dwarfing trend has emerged among middle-European bees.

20

Linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: A case of the Seine Bay, France

75%

Turki I., Massei N., Laignel B.

Oceanologia

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2019

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tom 61

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nr 3

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