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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Sea-buckthorn: a species with a variety of uses, especially in land reclamation

100%
Enescu C. M.
Dendrobiology
|
2014
|
tom 72
Sea-buckthorn is an important species especially in terms of land reclamation, but it has also an appreciable commercial value. The aim of this review paper was to highlight the multiple uses of this shrub species across world. Data regarding taxonomy, chorology, ecological requirements and biological characteristics were also presented. Special attention has been given to the role of sea-buckthorn in land reclamation. The importance of this species is expected to increase in the future due to its high ecological amplitude and biological characteristics that make it suitable for many types of land, including arid terrains.
2

Biological characteristics of the codling moth, Cydia pomonella (L.), wild population from Southern Syria

75%
Mansour M.
Polish Journal of Entomology
|
2007
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tom 76
|
nr 4
Sex ratio, weight, fecundity, fertility and longevity of codling moth, Cydia pomonella (L.) wild adults from wild populations of Southern part of Syria were examined. In addition, percentage of larvae entering diapause from each generation was investigated and the relationship between female weight and fecundity was examined. The results showed that sex ratio was about 1: 1 (males to females), adult weight ranged, on average, from 14.4 to 25.7 mg for spring generation males and females respectively and from 19.5 to 32.6 mg for summer generation males and females in the same order. Fecundity of the spring generation moths was close to 85 eggs/female; this number increased by about 30% for summer generation females and a strong relationship was found between female weight and fecundity. Adult fertility, for both generations (spring and summer), exceeded 90%, longevity ranged from about 10 days for spring generation adults to about 9 days for summer generation moths and males lived little longer than females. These results may serve as a reference in quality control measures for codling moth mass rearing in Syria.
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Evaluation of biological characteristics and productivity of asparagus (Asparagus officinalis L.)

63%
Kmitiene L.
Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura
|
2004
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tom 59
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nr 3
4

Variations of leaf economic spectrum of eight dominant plant species in two successional stages under contrasting nutrient supply

63%
Mao W., Li Y.-L., Zhao X.-Y., Zhang T.-H., Liu X.-P.
Polish Journal of Ecology
|
2016
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tom 64
|
nr 1
Leaf functional traits are indicators of both plant community and ecosystem responses to environmental factors and can thus increase our capacity to understand ecosystem processes and community assembly due to climate change. The variation in leaf functional traits between succession stages in Horqin Sandy Land is caused by soil nutrient content and by intrinsic biological characteristic of species, but the effects are different. Leaf economic spectra were assessed for seven leaf traits of eight species from early and advanced stages of succession. Species from early succession stages are Agriophyllum squarrosum (L.) Moq., Corispermum macrocarpum Bge., Setaria viridis (L.) Beauv. and Pennisetum centrasiaticum Tzvel., and species from advanced successional stages are Chenopodium acuminatum Willd., Chloris virgate Swartz, Digitaria sanguinalis (L.) Scop. and Leymus secalinus (Georgi) Tzvel. All these species were grown in a greenhouse experiment under two contrasting nutrient supplies including high nutrient level (N , with 20 g of nutrient addition) and low nutrient level (N-, with no added nutrients). As expected, the resource uptake strategies of the species were affected by soil fertilization addition. Leaf nitrogen content (LNC), leaf phosphorus content (LPC), and photosynthetic capacity per unit leaf area (Aarea) significantly increased at high nutrient level but LPC is more dramatically changed than others leaf traits. Leaf life span (LLS) and specific leaf area (SLA) did not show similar tendency with succession stage. At the same nutrient level, LES still shows different pattern between the early and the advanced succession stages. Species from early succession stages have higher LPC and Aarea, compared to species from advanced stages. Species from early succession stage also tend to have higher SLA and higher LNC than at the advanced succession stage. The LLS did not show any clear changes with succession process. These results provide evidence that LES shift along the succession process is mainly caused by intrinsic biological characteristic of species.
5

Effects of eutrophication on vendace, Coregonus albula (L.). II. Biological characteristics of vendace from selected lakes in Wielkopolska

63%
Fiszer M., Przybyl A., Andrzejewski W., Mazurkiewicz J., Golski J., Przybylska K., Runowski S.
Archives of Polish Fisheries
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2012
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tom 20
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nr 2
6

The ecological amplitude of Acorus calamus young shoots under water level gradient

63%
Cao Y., Guo Z., Yang Y., Wang G., Xie Z.
Polish Journal of Ecology
|
2015
|
tom 63
|
nr 4
This paper analysed the influence of the gradient of water levels (-54–120 cm) on Acorus calamus (A. calamus) young shoots in terms of their growth characteristics (germination rate, basal stem, height and biomass), leaf characteristics (number, area and moisture content), chlorophyll (chl) fluorescence parameters (Fv/ Fm, ETR, qP and qN) and other indicators. Based on a Gaussian model, we determined and quantified the response relationship between A. calamus young shoots and water level. The results showed that the ecological amplitude of water level for A. calamus young shoots was -52.3−141.8 cm, and the optimum range was -3.5−69.3 cm; a variety of indicators suggested that the optimum depth for A. calamus young shoots was from18.8 cm to 49.6 cm. The A. calamus seedling growth characteristics which were sensitive to changes in the water level were the germination rate and biomass. The germination rate was more sensitive to the submergence water depth, but the biomass was obviously influenced by the groundwater depth. Therefore, the A. calamus could be a suitable species for ecological restoration of land/inland water ecotones in lakes, rivers and reservoirs.
7

Physicochemical and biological characterization of soils from the vicinity of the Arctowski Polish Antarctic Station

63%
Bialkowska A. M., Grzelczyk A., Dlugolecka A., Cieslinski H., Kalinowska H., Kur J., Turkiewicz M.
Biotechnology and Food Science
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2012
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tom 76
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nr 1
8

Genotyping and virulence analysis of Toxoplasma gondii isolates from a dead human fetus and dead pigs in Jiangsu province, Eastern China

63%
Hou Z., Zhou Y., Liu D., Su S., Zhao Z., Xu J., Tao J.
Acta Parasitologica
|
2018
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tom 63
|
nr 2
9

Selected biological characteristics of the catch-available part of population of vendace, Coregonus albula [L.] from Lake Miedwie, Poland

63%
Czerniejewski P., Filipiak J., Poleszczuk G., Wawrzyniak W.
Acta Ichthyologica et Piscatoria
|
2004
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tom 34
|
nr 2
Background. Due to its economical importance the vendace has been considered one of the most important items of the ichthyofauna of Polish lakes. This is mainly because of favourable biological features of this species, namely: short (2-3 years) period of attaining market size, relatively fast growth rate, schooling behaviour facilitating catches, and most of all the high meat value, making it a desirable consumer item. Materials and Methods. Biological characters were determined in 451 vendace from Lake Miedwie, caught in spring, (124 individuals), summer (132), late summer (87), and autumn (108). The age and growth rates of the fish were determined based on scales using commonly accepted methods. Fulton- and Clark coefficients were used to determine the fish condition. Results. The fish caught were 180-294 mm-long (TL) and weighed 45.2-176.3 g. Mean values of the Fulton coefficient indicated a pronounced improvement in the fish condition from spring to later summer (0.70 and 0.80, respectively) and a slight reduction in autumn (0.75). The age composition of the fish was as follows: 1+, 213 individuals (47.2%); 2+, 229 ind. (50.8%); 3+, 9 ind. (2.0%). The von Bertalanffy equations that describe theoretical growth of the fish examined in length (Lt) and weight (Wt), were calculated. Conclusion. According to the generally accepted criteria of the vendace growth rate, the Lake Miedwie individuals showed a very good growth, higher than that recorded in populations inhabiting other whitefish lakes of Polish Western Pomerania, which indicates the availability of appropriate food resources for the vendace in the Miedwie.
10

Biological and morphological characteristics of European cisco (Coregonus albula L. 1758) from the Kaliszanskie Lake in the autumn period

51%
Animal Science. Scientific Papers of Agricultural University of Poznan
|
2006
|
tom 08
11

Long-term changes in some chemical and biological charakteristics of the Grosnica Reservoir water, Serbia

51%
Ostojic A., Topuzovic M., Comic L., Curcic S.
Polish Journal of Environmental Studies
|
2009
|
tom 18
|
nr 4
681-691
The Grošnica Reservoir is the oldest water-supply reservoir in Serbia. Investigations carried out monthly during the two-year period of 1996-98 revealed certain changes of some chemical and biological characteristics in relation to investigations performed almost 50 years earlier. Changes were noticed in composition of the plankton community and in some physical and chemical parameters. Although it could be expected that eutrophication would occur in time, the results do not confirm it. Total P, Secchi disk, and chlorophyll α values indicate that the Grošnica Reservoir belongs to the category of mesotrophic waters. The noticed differences can be attributed to raising of the dam's height and increasing the lake’s volume, resulting in reduction of the influence of turbid currents, as well as to forestation of the reservoir's banks.
12
Content available remote

Effect of long-term culture on the biological and morphological characteristics of human adipose tissue-derived stem cells

51%
Danisovic L., Oravcova L., Krajciova L., Varchulova Novakova Z., Bohac M., Varga I., Vojtassak J.
Journal of Physiology and Pharmacology
|
2017
|
tom 68
|
nr 1
13

Biological characteristics of rock goby, Gobius paganellus [Actinopterygii: Perciformes: Gobiidae], in the south-eastern Black Sea

51%
Engin S., Seyhan K.
Acta Ichthyologica et Piscatoria
|
2009
|
tom 39
|
nr 2
111-118
Background. Gobius paganellus L. is one of the most common gobiid fish in the south-eastern Black Sea. The aim of present study is to provide information on age structure and growth, length at sexual maturity, annual cycle of gonad development, and diet of rock goby in the south-eastern Black Sea. Materials and Methods. One hundred seventy-five specimens of G. paganellus were sampled from two stations in the province of Rize, south-eastern Black Sea. Samplings were performed by free diving using spear gun and hand net at night time. Specimens were dissected and sagittal otoliths, stomachs, livers, and gonads were removed. Otoliths were cleaned, immersed in glycerol, and examined on black background using reflected light at low magnification to determine age. Mean size at sexual maturity (L50) (i.e., size at which 50% of fish are mature) was estimated for males and females by fitting the logistic Gompertz function to the proportion of mature fish per cm size-class. The gonadosomatic index, seminal vesicle somatic index, and hepatosomatic index were calculated on monthly basis. The quantitative importance of different prey in the diet was assessed by calculating the frequency of occurrence, the percentage number, and the percentage mass of prey. The main food index (IMF) was calculated to combine the three used methods (IMF = (0.5 (%F + %N) %W)0.5). Results. The maximum age was estimated to be 7 and 6 years for males and females, respectively. The von Bertalanffy growth parameters was estimated from the mean age-length data for males and females (males: L∞ = 13.1 cm, k = 0.34, to= –0.11; females: L∞ = 18.2 cm, k = 0.18, to= –0.07). The estimated length at sexual maturity was 5.20 and 5.50 cm for males and females, respectively. The spawning season was between March and May. Total fecundity ranged from 1550 to 5839 eggs/female, with an average of 4322 ± 1109 eggs per female. The rock goby feeds on a wide variety of prey items, particularly on gammarids, brachyurans, natantians, bivalves, isopods, and fish. Conclusion. Growth rate (K) and growth performance index (φ’), length at sexual maturity, fecundity and feeding habits of Black Sea rock goby differ from Atlantic populations.
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