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

Influence of soil humidity level onto readings of cone penetrometers in compaction measurements

100%
Klonowski J., Bulinski J.
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
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2016
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nr 67
2

Spider assemblages of hummocks and hollows in a primeval alder carr in the Białowieza National Park – effect of vegetation structure and soil humidity

72%
Stanska M., Stanski T., Gladzka A., Bartos M.
Polish Journal of Ecology
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2016
|
tom 64
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nr 4
We studied the species richness, diversity, abundance and guild composition of spider assemblages on the hummocks and in the hollows of the alder carr in the Białowieża National Park. We also assessed the effect of vegetation structure and soil humidity on spiders settled in these two microhabitats. The spiders were collected from 10 May until 27 October 2001 by pitfall trapping. The main factor which differed between the hummocks and the hollows was soil humidity. In the case of vegetation cover we found some differences between the microhabitats but it was particularly evident in the case of litter, which was higher on the hummocks. Spider species diversity was significantly higher on the hummocks than in the hollows, but the number of individuals captured in both microhabitats was similar. The collected spiders belonged to six guilds and the proportion of spider individuals in particular guilds was significantly different between the hummocks and the hollows. The most abundant guild in both microhabitats was ‘ground hunters’ and the most numerous species was Piratula hygrophila. Our analyses showed that soil humidity positively affected the number of spider species and the number of individuals. Sampling date strongly influenced the number of collected species and spider individuals. Vegetation and litter cover did not have a significant impact on the spider assemblages. Our findings suggest that research conducted only on hummocks in the alder carr does not reveal the real structure of spider assemblages.
3

Occurrence of amylolytic microorganisms in soil depending on the type of cultivation

72%
Breza-Boruta B., Paluszak Z.
International Journal of Ecohydrology and Hydrobiology
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2006
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tom 06
|
nr 1-4
175-180
4

Effects of soil moisture and nickel contamination on microbial respiration rates in heavy metal-polluted soils

72%
Morawska-Ploskonka J., Niklinska M.
Polish Journal of Environmental Studies
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2013
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tom 22
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nr 5
Soil microorganisms may be both sensitive and resilient to various disturbances. The effects of a single stressor on soil microorganisms have been well studied, but only limited research has been carried out to test the effects of simultaneous action of diverse stressors. Soil samples were collected from a long-term polluted zinc and lead site and an unpolluted site. Modeling studies assumed spiking soils with five different concentrations of nickel (400, 800, 1.600, 3.200, and 6.400 mg Ni·kg⁻¹ dry weight soil) and their incubation under different humidity conditions (10%, 75%, and 120% of water holding capacity). We wanted to test if additional environmental disturbances have a different effect on microorganisms from polluted and unpolluted soils. The study showed that after 30 and 120 days of incubation, increasing Ni pollution inhibited microbial respiration rate (R), both in unpolluted and long-term metal polluted soils, irrespective of soil moisture. After 30 days of the experiment, microbial communities in both soils demonstrated a similar response to the additional toxicant. However, after 120 days of exposure to Ni, microbial communities from the unpolluted soil showed much higher inhibition of R than microbes from the polluted soils (p<0.001). The results might suggest that Ni co-tolerance mechanisms occurred in long-term metal polluted microbial communities.
5

Land snails as indicators of soil humidity in Danubian woodland [SW Slovakia]

72%
Cejka T., Hamerlik L.
Polish Journal of Ecology
|
2009
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tom 57
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nr 4
741-747
Moisture along with available calcium content are the major environmental factors controlling species richness and composition of the terrestrial molluscan fauna. In the present study, we focused on snails in a floodplain forest and their response on humidity. We described the model of response and calculate the humidity optima of particular species if possible. Generalised linear model (GLM) combined with Poisson distribution was used to ch aracterise the change of species abundance along a humidity gradient. From 31 species tested, 21 have shown significant response to humidity. The majority of specie s tested had unimodal response, four species showed monotonic regression type. Based on their humidity optima, species distributed along a moisture gradient belonged to three main ecological groups: (i) mesohygrophilous woodland species living mostly in non-inundated areas with humidity optima below 4, (ii) hygrophilous, forest hygrophilous and euryhygric species with optima between 4 and 6 and (iii) strongly hygrophilous (polyhygrophilous) species with mois ture optima above 6. Estimated moisture preferences for Danubian floodplain woodland land snail fauna would be a useful tool in a longterm biological monitoring of changing moisture regime.
6

Porownanie dziesieciu genotypow jeczmienia jarego pod wzgledem wykorzystania wody przy roznej wilgotnosci gleby

72%
Kaminska J., Mazgalska W.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
1992
|
nr 181-182
163-170
7

The effect of green fertilizers in the form of catch crops on soil humidity changes in a three-year-long vegetable crop rotation

72%
Jablonska-Ceglarek R., Rosa R., Zaniewicz-Bajkowska A., Franczuk J.
Electronic Journal of Polish Agricultural Universities. Series: Horticulture
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2006
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tom 09
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nr 1
A field experiment was conducted in central-eastern Poland in the years 1999-2003. It analyzed the effect of catch crop green fertilizers on soil humidity in a three-year-long crop vegetable rotation (white cabbage, onion, red beet). Oats, field pea and spring vetch cultivated in pure sowing and as mixtures were used as green fertilizers. The effect of green manures was compared with ploughed in farmland manure in the dose of 25 t·ha-1 and the control without any organic fertilization. White cabbage was grown in the first year after organic fertilization, onion – in the second and red beet – in the third.
8

Interdependences between typical bacteria, Actinomycetes, fungi, and fungistatic activity in soils of different structure and humidity conditions

72%
Weyman-Kaczmarkowa W., Pedziwilk Z.
Scientific Papers of Agricultural University of Poznan. Agriculture
|
1999
|
tom 01
9

Insect succession on carrion: seasonality, habitat preference and residency of histerid beetles (Coleoptera: Histeridae) visiting pig carrion exposed in various forests (Western Poland)

58%
Bajerlein D., Matuszewski S., Konwerski S.
Polish Journal of Ecology
|
2011
|
tom 59
|
nr 4
Carrion is an example of ephemeral and patchy microhabitat, rich in organic matter and therefore frequently colonized with a specific and repeated sequence by various arthropods. Beetles of the family Histeridae are a stable component of carrion communities, however their biology and ecology is poorly studied. Succession of insects on decomposing carrion may be used to determine elapsed time since death (so called post-mortem interval, PMI in forensic entomology). Recent studies have shown that some species of histerid beetles are highly useful for this purpose. However it requires detailed information on their biology, phenology and habitat preference. Seasonality, habitat preference and residency on carrion of histerid beetles were analyzed while studying succession of insects on 36 pig carcasses (mean weight = 25.8 kg) in spring, summer and autumn, in pine - oak forest, hornbeam - oak forest, and alder forest (2 carcasses/ forest type/season/year). The experiment was conducted in the Wielkopolska region (Western Poland) in 2006 and 2007. The spring part lasted 88 days in 2006 and 105 days in 2007, the summer part – 49 days in both years and the autumn part – 94 days in 2006 and 105 days in 2007. Among 21 adult species recorded, Saprinus semistriatus (Scriba), Margarinotus striola succicola (Thomson) and Margarinotus brunneus (Fabricius) were the most numerous. Moreover, larvae of Saprinus and Margarinotus were collected. Abundance (numbers per one carcass) of most adult species of Margarinotus was influenced both by the forest type and season whereas abundance of species of Saprinus was influenced only by the season. Most species reached the highest number of adults in spring. Only S. semistriatus was similarly abundant both in spring and summer. Larvae of Margarinotus were most abundant in spring, whereas larvae of Saprinus in summer. The majority of Margarinotus species reached their higher numbers in hornbeam - oak forest. Residency on carrion in adult S. semistriatus had a clear peak of abundance in spring (after 36 days of decomposition) and was shorter than residency in adult M. striola succicola and M. brunneus for which no clear peak was found. We suggest that differences in forest type preferences may result from differences in soil humidity and temperature near the forest floor, whereas differences in residency period on carrion between Margarinotus and Saprinus may be explained by differences in release patterns of volatile organic compounds (VOCs) attracting these genera.
10
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Different effects of soil drought on soluble carbohydrates of developing Lupinus pilosus and Lupinus luteus embryos

58%
Piotrowicz-Cieslak A. I., Michalczyk D. J., Adomas B., Gorecki R. J.
Acta Societatis Botanicorum Poloniae
|
2007
|
tom 76
|
nr 2
The aim of this study was to compare the accumulation of soluble carbohydrates in embryos of two lupin species: cultivated Lupinus luteus (cv. Juno) and wild L. pilosus, developing on plants grown under normal soil humidity and soil drought. All analysed seeds accumulated soluble carbohydrates, including: monosaccharides, sucrose, cyclitols, galactosyl cyclitols and raffinose family oligosaccharides. Soil drought caused a nearly two-fold increase of soluble carbohydrate contents in both species. L. pilosus embryos however, responded to water deficiency by increasing the accumulation of cyclitols and galactosyl cyclitols, whereas L. luteus embryos enhanced accumulation of cyclitols and raffinose family oligosaccharides.
11

The influence of meteorological conditions on the growth and yielding of leek cultivated in living mulches

51%
Jedrszczyk E., Poniedzialek M.
Folia Horticulturae
|
2007
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tom 19
|
nr 2
12

Wplyw terminu siewu i uwilgotnienia siedliska na rozwoj kostrzewy lakowej i kostrzewy trzcinowej w roku siewu

44%
Janicka M., Rutkowska B.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
1993
|
tom 188
85-94
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