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

The impact of global climate change on the spread of parasitic nematodes

100%
Okulewicz A.
Annals of Parasitology
|
2016
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tom 62
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nr Suppl.
2

Regional climate scenarios and their applications

88%
Liszewska M., Osuch M.
Geographia Polonica
|
1998
|
tom 71
3

The hydrological regime of rivers in the light of scenarios of global climatic change

88%
Gutry-Korycka M., Rotnicka J.
Geographia Polonica
|
1998
|
tom 71
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Promotion of renewable energy technologies in Sub-Sahara Africa via biomass energy technology

75%
Nya J. J.
International Letters of Natural Sciences
|
2014
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tom 15
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nr 1
There are various biomass energy technologies with imbalanced application status spread all over Sub-Sahara Africa. Currently, some biomass technologies have been developed maturely in the market such as biogas, that can be economically competitive, commercially developed, and applied in large scale, while other technologies are in the early stage of commercial applications, that need subsidies and other financial incentives to encourage them in the market. These include biomass power, biomass pallet fuel, biofuels from non-grain feedstock, etc. There are also many emerging biomass technologies which are at R&D and demonstration stage and are expected to develop into industrial and commercial applications, such as biological ethanol fuel from cellulose and biodiesel from oil plants. Due to the differences in terms of technology maturity, development stage, market competitiveness, and future perspectives of the various biomass technologies, the obstacles can be different, the needed incentives also vary. It is an important task for Sub-Sahara African Countries to study and design a biomass energy development program to ensure implementation of the region’s biomass energy development objectives. The biomass energy development program in Sub-Sahara Africa should include assessment of various biomass technology status and objectives, development of approaches in biomass technology research and development, pilot projects, demonstration, and application promotions, and identify supporting incentives in techniques and regulations.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Methanogens in the environment: an insight of methane yield and impact on global climate change

75%
Kumar Pandey A., Das N., Muthu Kumar A., Rao S.
International Letters of Natural Sciences
|
2015
|
tom 37
Methane is a most important greenhouse gas for planetary heating and it’s produced by methanogenic microorganisms as a metabolic byproduct and creates climate change. Methanogens are ancient organisms on earth found in anaerobic environments and methane is a key greenhouse gas concerned with methanogens. Therefore here is intense interest to writing this paper. A number of experiments have already conducted to study the methanogens in various environments such as rumen and intestinal system of animals, fresh water and marine sediments, swamps and marshes, hot springs, sludge digesters, and within anaerobic protozoa which utilize carbon dioxide in the presence of hydrogen and produce methane. The diversity of methanogens, belong to the domain Archaea and get involved in biological production of methane that catalyzes the degradation of organic compound as a part of global carbon cycle called methanogenesis. Majorly in this article we summaries the diversity of methanogens and their impact on global warming.
6

Temperature and nutrient dynamics in eutrophic freshwater ecosystems

75%
Zalewski M., Wagner I.
Geographia Polonica
|
1998
|
tom 71
7

Outline of the problem of research into climate change on the basis of the results of ground-based meteorological observations in Poznan, Poland

63%
Wos A.
Quaestiones Geographicae
|
2010
|
tom 29
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nr 1
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Spatial and interannual variations of seasonal sea surface temperature patterns in the Baltic Sea

63%
Bradtke K., Herman A., Urbanski J. A.
Oceanologia
|
2010
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tom 52
|
nr 3
345-362
On the basis of monthly averaged satellite data, this study examined how the annual cycle of the Baltic Sea surface temperature (SST) varied spatially and temporally during the period 1986–2005. We conclude that there are two main thermal seasons in the Baltic Sea separated only by short transitional periods – spring lasting about one month, and autumn lasting two months. Generally speaking, summer covers the part of the year from June to October with the highest monthly mean SST in August. Winter, with a minimum monthly mean SST in February in shallow waters or in March in deeper areas, lasts from December to April. As a result of climate changes over the Baltic Sea region, strong positive trends in SST occur in the summer months. In consequence, the period with extremely high sea surface water temperatures has become slightly longer in the central Baltic. In the last decade winter changes in SST display zero or even negative tendencies. The investigated period was characterized by an annual increase in mean temperatures of about 0.03–0.07◦C. However, the rates of monthly mean SST changes were sometimes more than three times as high.
9

The effect of distinct hydrologic conditions on the zooplankton community in an estuary under Mediterranean climate influence

63%
Muha T. P., Chicharo L., Morais P., Pereira R., Ben-Hamadou R., Cruz J., Chicharo M. A. T.
International Journal of Ecohydrology and Hydrobiology
|
2012
|
tom 12
|
nr 4
10

Ecological and economic problems of the introduction of power-saving technologies in Ukraine

63%
Saliev E.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2010
|
tom 10
11

Response of soil nematodes to climate-induced melting of Antarctic glaciers

63%
Ilieva-Makulec K., Gryziak G.
Polish Journal of Ecology
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2009
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tom 57
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nr 4
811-816
Nematode colonization and establishment of nematode communities on icefree areas created by the recession of Antarctic glaciers were studied on the Antarctic Specially Protected Area (ASPA) No. 128 (Western coast of Admiralty Bay, King George Island, South Shetlands Islands). Soil samples were taken along three transects marked between sea shore and Ecology Glacier, Baranowski Glacier and Windy Glacier and assigned to four age-class intervals: 0-7, >7– 29, >29–52 and >52 years after the retreat of the glaciers. Changes in nematode communities, in terms of abundance, diversity and trophic structure were related to the duration of the ice-free period. The abundance of nematodes increased with the age of ice-free areas. The highest numbers of nematodes were found on the sites free of ice for more than 52 years. Taxonomic and trophic diversity of nematodes on these sites was also significantly higher in comparison to the rest sites. Nematode communities on the sites from the first three age-class intervals were poor in genera (up to 6 genera) while on the oldest sites in total 16 genera of nematodes were found. A trend of increasing the number of nematode trophic groups along the age classes was also apparent – from community of nematodes belonging to only two trophic groups (bacterial and fungal feeders) on younger ice-free sites to more complex community of nematodes (belonging to five trophic groups), at the oldest sites.
12

Biomass production of different grassland communities under artificially modified amount of rainfall

63%
Holub P., Tuma I., Zahora J., Fiala K.
Polish Journal of Ecology
|
2015
|
tom 63
|
nr 3
Global climate change is predicted to alter growing season rainfall patterns, potentially reducing total amounts of growing season precipitation and redistributing rainfall into fewer but larger individual events. Such changes may affect numerous soil, plant, and ecosystem properties in grasslands and ultimately impact their productivity and biological diversity. A five-year field study with regulated amount of precipitation was executed in different types of temperate grasslands (dry Festuca, wet Cirsium and Nardus grasslands) in three different regions (in lowland, highland and mountain, respectively) in the Czech Republic. Three simulated rainfall treatments were applied: reduced rainfall by 50% (dry), increased rainfall by 50% (wet), and natural rainfall of the current growing season (ambient). The addition of supplemental resources of water exhibited slightly positive relation with the above-ground production (AP), but statistically significant only in the lowland grassland. At all grasslands, both root biomass (RB) and total below-ground biomass (TBB) were significantly higher in wet compared to dry treatments. Significantly increased values of the TBB/AP ratios occurred only in the highland grassland due to enhanced rainfall. The opposite relations were found in lowland grassland where the TBB/AP ratio decreased in response to enhanced rainfall, though not significantly. In the mountain grassland, values of the TBB/AP ratios have shown less variability. The highland wet Cirsium grassland was more sensitive to altered rainfall regimes forming rather lower proportion of below-ground plant production.
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Biodiversity of the Arctic Ocean in the face of climate change

63%
Weslawski J. M.
Papers on Global Change
|
2011
|
nr 18
Global climate changes which has been observed over the recent years affects organisms occurring in the Arctic seas and the functioning of the whole maritime ecosystems there. The research note presents and briefly analyses the biological diversity of the Arctic Ocean and the most important factors which change the relations between organisms and the environment in the Arctic.
14

Generation of time series of the meteorological values in changing climatic conditions

63%
Gutry-Korycka M., Werner P., Jakubiak B.
Geographia Polonica
|
1994
|
tom 62
15

Modification of the effects of global climate change by plant cover structure in an agricultural landscape

63%
Ryszkowski L., Kedziora A.
Geographia Polonica
|
1995
|
tom 65
16

Polish Baltic coast: changes, hazards and management

63%
Zeidler R. B.
Geographia Polonica
|
1994
|
tom 62
17

Tree rings of Norway spruce [Picea abies [L.] Karsten] in Lithuania as drought indicators: dendroecological approach

63%
Vitas A.
Polish Journal of Ecology
|
2004
|
tom 52
|
nr 2
Dendroecological research on the radial growth of Norway spruce in Lithuania during the 20th century has been conducted. Hypothesis of the study is following: intensity of droughts during the 20th cen- tury is the main factor determining the state of spruce forests in Lithuania. Aim of the study was to estimate the impact of dry spring and summer climate conditions on Norway spruce during the 20th century with a respect to global climate change. Climate impact on the radial growth of spruce using multivariate regression techniques and detection of pointer years (i.e. years with narrow tree rings in the majority of trees) was investigated. The results show that for radial growth of spruce the most important factor is humid beginning of summer and that from four to six pointer years to droughts during the 20th century are attributed.
18

Effects of elevated CO2 and temperature on growth and morphology of fir (Abies faxoniana, Rehd. e t Wils.) and native herbs in a treeline ecotone: an experimental approach

51%
Hou Y., Luo Z., Jenerette G. D., Qiao Y., Wang K.
Polish Journal of Ecology
|
2010
|
tom 58
|
nr 2
Determining how changes in atmospheric CO₂ concentrations and climate affects growth of species is helpful for understanding plant community species shift in response to future environmental changes. In the present study, fir (Abies faxoniana) and native herbs from treeline ecotone of east Qinghai-Tibetan Plateau (altitude: 3230–3300 m) were exposed to ambient CO₂ or ambient +350 μmol·mol⁻¹ CO₂ concentration in combination with ambient or ambient +2°C air temperature for two years in enclosedtop chambers. The results showed that elevated CO₂ , elevated temperature and the combination of elevated CO₂ and temperature increased biomass, height and diameter of fir compared to the control. Elevated CO₂ decreased biomass of Deyeuxia scabrescens, but increased for Fragaria orientalis and Cardamine tangutorum. Except for Fragaria orientalis, herbaceous biomass decreased by elevated temperature. The combination stimulated growth of Fragaria orientalis and Cardamine tangutorum, but suppressed for Deyeuxia scabrescens and Carex kansuensis. The results also demonstrated that elevated CO₂ and temperature increased the crown size and altered the morphology of fir, with benefits for resource capture, and did not affect growth of herbs. Larger root to shoot ratio of fir contributed the enhancement of biomass, while negatively influencing the growth of some herbs. This indicates morphological changes of trees may modify their growth responses and species around them to environmental changes. The different effects of elevated CO₂ and temperature on the growth of species in treeline ecotone suggest that climate change may alter community composition and structure.
19
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Contemporary change of Subpolar areas - direction and methods of investigations (Discussion panel)

51%
Marchwinska-Sławinska A.
Papers on Global Change
|
2011
|
nr 18
20
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Antarctic benthic fauna in the global climate change

51%
Kidawa A., Janecki T.
Papers on Global Change
|
2011
|
nr 18
An important question stated in the presented paper is: Could rotifers be the indicators of climate change in the Antarctic environments? Rotifers are one of the most important components of the invertebrate fauna of the Antarctic freshwater and terrestrial ecosystems. However, investigations of their distribution, diversity and an ecological role in the environment have been widely neglected, mainly due to the methodological and taxonomical difficulties. During the investigations 176 species of rotifers were found, including the endemic and cosmopolitan species. Their existence is directly proportional to microvariations of humidity factor. Scientists still have poor knowledge about the occurrence of rotifer species in recently studied habitats e.g. cryoconite holes, nunataks or soil. Probably rotifers could be the indicators of climate change in the Antarctic freshwater and terrestrial ecosystems but more investigations and monitoring studies are needed.
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