Wyniki wyszukiwania - AGRO

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Changes in microbial community structure during adaptation towards polyhydroxyalkanoates production

100%

Ciesielski S., Klimiuk E., Mozejko J., Nowakowska E., Pokoj T.

Polish Journal of Microbiology

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2009

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tom 58

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nr 2

131-139

Polyhydroxyalkanoates (PHAs) are interesting as material for bioplastic production because they are recognized as biodegradable and could be produced from renewable resources. The industrial production of PHAs has already been used in practice by pure cultures. In recent years, many studies have been addressed of PHA production by mixed cultures. Nevertheless, while fermentation strategy to improve the PHA content of biomass, yield and productivity in pure cultures are well defined, knowledge about the operational condition for PHA synthesis by mixed culture is still very limited. The ecology of the microbial community of activated sludge remains largely unknown, primarily because of the difficulty of making detailed observation. Recently, developed molecular techniques allow determination of community composition from DNA extracted directly from biomass samples. This study examined the changes of bacterial communities in activated sludge through application of the molecular technique, ribosomal intergenic spacer analysis (RISA). Microbial communities from anaerobic-aerobic and ammonia limited fermentations were ascertained. The applied operational conditions were shown to select for a restricted microbial population, which were different in term of structure with respect to the initial microbial consortia in the activated sludge used as inoculum.

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The relationship between parasite community structure and level of bioaccumulation of pollutants within parasite environment

100%

Sebelova S., Dusek L., Machala M., Gelnar M., Jurajda P.

Wiadomości Parazytologiczne

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1998

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tom 44

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nr 3

3

Temporal stability of community structure of the parasitic Hymenoptera in a beech forest on limestone

100%

Ulrich W.

Polish Journal of Ecology

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1999

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tom 47

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nr 3

4

Collembola communities from the Apuseni Mountains [the Carpathians]

100%

Harsia T.

Polskie Pismo Entomologiczne

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1995

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tom 64

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nr 1-4

5

The influence of riparian vegetation on the distribution and abundance of bats in an African savanna

86%

Monadjem A., Reside A.

Acta Chiropterologica

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2008

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tom 10

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nr 2

Riparian habitats are known to be important for bats across the world, however this is largely unstudied in Africa. We investigated the community structure of bats in riparian areas and the surrounding savanna landscape in Swaziland's lowveld using mist nets and a harp trap. We found riparian sites overall had higher bat activity, diversity, species richness and abundance. One species (Epomophorus wahlbergi) accounted for 52.6% of captures. Seasonality had no effect on overall captures, nor did distance from nearest riparian habitat for savanna sites. Echolocation guilds were correlated with vegetation characteristics, with CF (constant frequency), FM (steep frequency-modulated) and FM-QCF (broadband FM) bats more frequently captured at sites with denser undergrowth than QCF (quasi-constant frequency or narrowband FM) bats; conversely, QCF bats were more frequently caught at sites with lower canopy cover than other bats. Our findings suggest that although bats discriminate between microhabitats, they do not respond to larger-scale habitat features in the way that other taxa, such as birds, are found to. In conclusion it appears that riparian areas are important foraging sites for bats within African savannas.

6

Zooplankton community emerging from fresh and saline wetlands

86%

Toruan R. L.

International Journal of Ecohydrology and Hydrobiology

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2012

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tom 12

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nr 1

7

Microhabitats and oribatid fauna: comparison of 2 sampling approaches

86%

Skubala P.

Biological Letters

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2016

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tom 53

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nr 1

8

Effects of climate change on microbial community structure and function in the Antarctic glacier lagoon

86%

Swiatecki A., Gorniak D., Jankowska K., Zdanowski M. K., Borsuk P., Zmuda-Baranowska M. J., Grzesiak J.

Papers on Global Change

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2010

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nr 17

One of the dramatic effects of global warming is the retreat of glaciers. This phenomenon has intensified in the last two decades. Postglacial areas are quickly colonised by various groups of organisms. Auto- and heterotrophic microorganisms play an especially vital role in these processes. They thrive in shallow glacial lagoons which often form in front of retreating glaciers. These reservoirs are characterised by high dynamics of physicochemical parameters, including: salinity, temperature and concentrations of organic compounds and nutrients. The conducted microbiological studies have revealed rich structural and functional diversity of bacteria occurring in the ecosystem of Ecology Lagoon situated on King George Island. Bacteria found on the surface of algae and stones in the shore zone of the lagoon showed particularly intense metabolic activity. A molecular analysis has indicated that unique taxonomic groups of bacteria occur in the ecosystem of Ecology Lagoon.

9

Relationships between community structure and soil properties of a swamp forest from Northern Turkey

86%

Yalcin E., Bilgin A., Kutbay H. G., Kilinc M.

Polish Journal of Ecology

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2004

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tom 52

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nr 2

The relationships between community structure and soil properties (pH, P, N, Ca, Mg, CaCO₃ and clay content) were examined in a swamp forest from the northern part of Turkey. Statistically significant correlations were found between the soil variables and three different associations (Fraxino excelsioris-Fraxinetum angustifoliae, Carpino orientalis-Pterocaryetum fraxinifoliae, Acero campestris-Alnetum glutinosae) according to CCA ordination. P, Mg, Ca and clay content of soil were found as four significant variables for species composition in the studied forest.

10

Changes in the community structure of Collembola during secondary processes of succesion in the pine forest

86%

Sterzynska M.

Polskie Pismo Entomologiczne

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1995

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tom 64

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nr 1-4

11

Response of soil microflora to pesticides introduced into soil - a review

86%

Cycon M., Piotrowska-Seget Z.

Pestycydy

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2007

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nr 1-2

12

Assessment of the trophic state of the coastal Lake Gardno based on community structure and zooplankton-related indices

72%

Paturej E.

Electronic Journal of Polish Agricultural Universities. Series Biology

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2006

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tom 09

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nr 2

An analysis of the species composition of zooplankton of Lake Gardno was based on the materials collected in the years 1998–2002, from July to August. It was found that the numbers of zooplankton species, their abundance and biomass were greatly variable, and depended on abiotic factors and lake trophy. An analysis of the structural characteristics of zooplankton as bioindicators of lake eutrophication revealed the presence of some species of rotifers and crustaceans in the zooplankton community, considered good indicators of lake trophy. The zooplankton-related trophic state indices enabled to classify Lake Gardno as eutrophic and meso-eutrophic.

13

Known materials of Uropodina (Acari: Mesostigmata) in Wielkopolska forest reserves

72%

Napierala A., Labijak B., Bernart P., Skwierczynski F., Raczynski T.

Badania Fizjograficzne. Seria C - Zoologia

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2011

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tom 02(C52)

14

Effect of hydrological connectivity on the molluscan community structure in oxbow lakes of the Lyna River

72%

Obolewski K., Glinska-Lewczuk K., Kobus S.

Oceanological and Hydrobiological Studies

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2009

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tom 38

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nr 4

75-88

15

Influence of horse age, breed and type of horse management on the community structure of strongylids (Nematoda: Strongylida) in domestic horses

72%

Kharchenko V. A., Kuzmina T. A., Dzeverin I.

Annals of Parasitology

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2016

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tom 62

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nr Suppl.

16

Breeding bird community of a primeval temperate (Białowieza National Park, Poland) at the beginning of the 21st century

72%

Wesolowski T., Rowinski P., Mitrus C., Czeszczewik D.

Acta Ornithologica

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2006

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tom 41

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nr 1

17

Seasonal influence of physico-chemical parameters on phytoplankton diversity, community structure and abundance at Parangipettai coastal waters, Bay of Bengal, South East Coast of India

72%

Vajravelu M., Martin Y., Ayyappan S., Mayakrishnan M.

Oceanologia

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2018

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tom 60

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nr 2

18

Effect of environmental conditions on the structure of phytoplankton community of Lake Piaseczno during two different winter periods

72%

Lenard T.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2013

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tom 10

19

Community structure of summer phytoplankton in peat pits situated on oligotrophic quaking bog „Krugle Bagno” (Polesie Lubelskie, eastern Poland)

72%

Szczurowska A., Peczula W.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2013

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tom 10

20

Materials to knowledge of Uropodina (Acari: Mesostigmata) of Poznan District

72%

Napierala A., Skiwerczynski F., Jankowiak A.

Badania Fizjograficzne. Seria C - Zoologia

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2010

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tom 01(C51)

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