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Wyszukujesz frazę "Terrestrial ecosystem" wg kryterium: Temat


Tytuł:
Rotifers as indicators of climate change in the Antarctic environments
Autorzy:
Pociecha, A.
Powiązania:
https://bibliotekanauki.pl/articles/11956.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rotifer
indicator
climate change
Antarctic environment
biodiversity
freshwater ecosystem
terrestrial ecosystem
Antarctic
Opis:
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.
Źródło:
Papers on Global Change; 2010, 17
2300-8121
1730-802X
Pojawia się w:
Papers on Global Change
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Profile variability of lithium content in soils of selected forest ecosystems
Autorzy:
Malczyk, P
Powiązania:
https://bibliotekanauki.pl/articles/1450642.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
total lithium
forest ecosystem
soil profile
soil
lithium content
forest soil
distribution
terrestrial ecosystem
Opis:
The distribution of total lithium content with depth was studied in soils of selected forest ecosystems, with regard to their physicochemical properties and possible anthropogenic impact. The six soil profiles, representing forest soils, were selected for the study: Udipsamments formed from sandr sand, eolian sand and alluvial sand, and Haplorthods Humic formed from eolian sand, Dystrochrepts formed from alluvial silt and Eutrochrepts formed from boulder loam. The total Li content was determined after previously dissolving the samples in a mixture of concentrated acids: hydrofluoric and nitric (HF+HNO3). The content of Li in solutions was determined using the FAS method on PU-9100 X Philips spectrometer. The total lithium content in studied soils under investigations occurs in range of 1.63 to 229.68 mg kg-1 and was considerably lower in organic horizons (1.63-8.07 mg kg-1 ) than in mineral (17.58-229.68 mg kg-1). The concentration of lithium in subhorizons of forest litter increases according to the litter decomposition degree (01<0f<0fh). The Li concentrations found in all forest soils formed from sand were much higher than its natural content in surface mineral horizons of arable soils 1.30-56.00 mg kg-1. The total lithium content in studied soils was negative statistically correlated with the content of organic carbon (-0.6062), silt and clay fraction (-0.7131 and -0.6322), hydrolytic acidity (-0.5222), sum of exchangeable bases (-0.6196) and cation exchange capacity (-0.6277).
Źródło:
Acta Agrophysica; 2001, 50; 189-195
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evolution of the cell wall components during terrestrialization
Autorzy:
Banasiak, A.
Powiązania:
https://bibliotekanauki.pl/articles/57898.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
evolution
cell wall
land plant
terrestrialization
ancestral gene
polysaccharide
lignin
terrestrial ecosystem
Opis:
Colonization of terrestrial ecosystems by the first land plants, and their subsequent expansion and diversification, were crucial for the life on the Earth. However, our understanding of these processes is still relatively poor. Recent intensification of studies on various plant organisms have identified the plant cell walls are those structures, which played a key role in adaptive processes during the evolution of land plants. Cell wall as a structure protecting protoplasts and showing a high structural plasticity was one of the primary subjects to changes, giving plants the new properties and capabilities, which undoubtedly contributed to the evolutionary success of land plants. In this paper, the current state of knowledge about some main components of the cell walls (cellulose, hemicelluloses, pectins and lignins) and their evolutionary alterations, as preadaptive features for the land colonization and the plant taxa diversification, is summarized. Some aspects related to the biosynthesis and modification of the cell wall components, with particular emphasis on the mechanism of transglycosylation, are also discussed. In addition, new surprising discoveries related to the composition of various cell walls, which change how we perceive their evolution, are presented, such as the presence of lignin in red algae or MLG (1→3),(1→4)-β-D-glucan in horsetails. Currently, several new and promising projects, regarding the cell wall, have started, deciphering its structure, composition and metabolism in the evolutionary context. That additional information will allow us to better understand the processes leading to the terrestrialization and the evolution of extant land plants.
Źródło:
Acta Societatis Botanicorum Poloniae; 2014, 83, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relic cryogenic indicators of diagnostic horizons in rusty and parabrown soils in European Lowland
Autorzy:
Kowalkowski, A
Powiązania:
https://bibliotekanauki.pl/articles/1450738.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
European Lowland
soil
cryopedogenesis
permafrost
periglacial perstruction zone
parabrown soil
terrestrial ecosystem
Quaternary
Opis:
In the last Vistulian glacial period, the profiles of periglacial perstructions and the profiles of old cryosols were formed in the extra glacial and gradually released from retreating continental glacier regions, originally in conditions of over 6-8 ka existing arctic desert before approximately 14.5 ka, and then from 14.5 to 10.5 ka BP, in the changing short rhythms of glacier deserts, shrub and park tundras as well as in short lasting pine-birch and birch forests. The whole profile thickness of the remaning periglacial horizons of the pleistocene paleosoils at the earth surface consists of a sequence or series of periglacial frost perstruction zones. In the cryogenic perstruction process of surface and subsurface sediment layers in the periglacial environment there were diagnostic horizons - cryosideric - crBv, cryoargillic - crBt, and cryospodic - crBk formed. Their localisation in the perstruction profile, in the soil horizons profile and the grain size profile, with readily recognisable associations of cold climate characteristics, may be used for quantification and diagnosis of rusty and parabrown paleosoils in the framework of superordinatektaxonomic unit of paleocryosols.
Źródło:
Acta Agrophysica; 2001, 50; 147-167
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can macrofungal biodiversity predict forest status and dynamics? A view from South European Mediterranean forests (Italy)
Autorzy:
Ambrosio, Elia
Feest, Alan
Powiązania:
https://bibliotekanauki.pl/articles/11543409.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
microfungi
biodiversity
forest stand
forest dynamics
terrestrial ecosystem
environmental impact
Mediterranean forest
Italy
Opis:
Fungi are among the most important organisms on earth, and they are essential components of terrestrial ecosystems. Their reproductive structures are strictly dependent and affected by environmental conditions, and community dynamics over time and space may be indirect indicators of the health status of forests. We combined macrofungal biodiversity indices in eight Mediterranean forests in Italy and surveyed 160 plots by standardized surveys, to evaluate the role of macrofungi as early predictors of change in the forest structure. The results show that indices of fungal diversity are influenced by geographic and floristic conditions, and inter- and intra-annual temperature and rainfall fluctuations affect the formation of fungal fruiting bodies. These findings suggest that environmental changes could be reflected by macrofungi, and conservation initiatives should consider the pivotal role that fungi play in biodiversity monitoring.
Źródło:
Acta Mycologica; 2021, 56, 1; 567
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A digitized database of bark morphology for identification of common tree species and literature study of bark phytochemicals and therapeutic usage
Autorzy:
Biswas, Shilpa
Gupta, Kaushik
Talapatra, Soumendra Nath
Powiązania:
https://bibliotekanauki.pl/articles/1190149.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Bark morphology
Bark images database
Phytochemicals in bark
Common tree species
Terrestrial ecosystem
Opis:
Bark is used for several therapeutic purposes by traditional knowledge from ancient time. The present study was attempted to digitize the bark morphology by image based database for common tree species and compilation of recent research works by literature survey to know potent phyto- constituents present in the bark of tree species and their ability in disease prevention. In conclusion, present study of digital database on bark morphology may help easy detection of common tree species in biodiversity research work. In the present study, also the compilation of bark phytochemicals and their therapeutic efficiencies may also serve a databank as ready references in future pharmacological researches.
Źródło:
World Scientific News; 2016, 42; 143-155
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical composition of the soil material of Alfisols from the Vistulian Formation
Autorzy:
Dlugosz, J
Breza-Boruta, B.
Rozanski, S.
Powiązania:
https://bibliotekanauki.pl/articles/1450443.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
physicochemical property
Polska
fluviglacial material
soil material
soil
glacial material
chemical composition
terrestrial ecosystem
Opis:
Four pedons of Alfisols were selected from the Experimental Station Mochełek to study chemical composition of the soil material. The study area is located in the south-western border of the Krajeńska Upland, on the border of two geomorphological formations: erosion surface of floating waters (fluviglacial formation) and rolling ground moraine (glacial material). The investigated soils were classified as Typical Hapludalfs (pedon 11,21 and 26) and Typical Glossudalfs (pedon 7). Chemical composition was analysed using the following methods: fusion with Na2CO3 and dissolving in the HF and HCIO4 mixture. Results were presented in an oxide form and molar ratios (SiO2/R2O3; SiO2/Al2O3; Si02/Fe203; Al2O3/Fe203) were calculated. In the studied soils, the content of SiO2 was from 78.21 to 90.00 %. The lowest SiO2 content was found in the illuvial horizons. Otherwise the illuvial process influenced Al2O3 and Fe2CO3 distribution, the highest amounts of which were found in the illuvial horizons. TiO2 (0.15 to 0.63 %), had similar profile distribution to K2O (1.74-3.88 %) and Na20 (0.61- 1.05 %). CaO and MgO contents were the highest in the parent material, including CaCO3 (pedon 11 and 26). However, the highest amount of MnO was observed in the surface horizons (0.56-0.58 %). Chemical composition of the studied soil material indicated a large influence of the illuvial process and particle-size on the total content and profile distribution of the analysed soil. However, the evident influence of parent material from which the analysed soils were formed, was not found.
Źródło:
Acta Agrophysica; 2001, 50; 119-127
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy metals in the dandelion and apple tree pollen from the different terrestrial ecosystems of the Carpathian Region
Poziom metali ciężkich w pyłku mniszka lekarskiego i jabłoni w różnych ekosystemach terytorialnych regionu karpackiego
Autorzy:
Klym, O.
Stadnytska, O.
Powiązania:
https://bibliotekanauki.pl/articles/2613471.pdf
Data publikacji:
2019
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
dandelion
Taraxacum officinale
apple tree
Malus domestica
pollen
heavy metal
terrestrial ecosystem
Carpathian Region
Źródło:
Acta Scientiarum Polonorum. Zootechnica; 2019, 18, 3; 15-19
1644-0714
Pojawia się w:
Acta Scientiarum Polonorum. Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of humic substances in humid subalpine forest soils in Central Taiwan
Autorzy:
Chen, J S
Chiu, C.Y.
Powiązania:
https://bibliotekanauki.pl/articles/1450325.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
subalpine forest
temperature
humic acid
humification
humic substance
soil
Taiwan
ecosystem
forest soil
terrestrial ecosystem
fulvic acid
Opis:
The study site, 2700 m a.s.l., is located in the central Taiwan. A globally rare combination of the mean temperature (ca. 9.5 °C) and total annual precipitation (ca. 4100 mm) makes studies on pedogenic and edaphic processes of the moist soils in this area worthwhile. The study was undertaken to investigate distribution and characteristics of humic substances in this subalpine forest ecosystem. Fulvic acids comprised a higher total organic carbon fraction (1.8 to 25%) than humic acids (1.1 to 13.4%). Fulvic acids were more mobile and migrated downwards to deeper horizons. Comparatively, humic acids were distributed more in the surface horizons. The hu- mification index, based on E4/E6, showed that humification varied in different horizons even in the same profile. The AlogK and RF values indicate that the types of humic acids extracted from Tsuga forest soil are grouped as P or A types, whereas Rp or B types are in Picea forest soil, suggesting a high degree of humification of humic acids in such soils. Features of the absorption spectra were consistent with the classification of humic acids with A logK and RF values. Humification indices and humic acid types in these subalpine soils indicate that they are similar to acidic soils elsewhere with abundant rainfall and cold climate.
Źródło:
Acta Agrophysica; 2001, 50; 41-47
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical agricultural soil map of Poland at the scale of 1:500 000
Autorzy:
Budzynska, K
Stuczynski, T.
Zaliwski, A.
Powiązania:
https://bibliotekanauki.pl/articles/1450546.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
natural environment
soil map
Polska
soil
numerical map
soil property
landscape architecture
terrestrial ecosystem
soil cover
Opis:
In Poland, soil cover has been identified in detail in terms of spatial variability which resulted in soil records that comprise data on soil properties put in order according to the criteria of administrative and physiographic division. These data were not available in the numerical format till quite recently which meant that their application did not fully meet present requirements of agriculture, environment and landscape conservation, modification of functions, etc. The newly created numerical soil map at the scale of 1.500 000 corrects this difficulty. The main information content of the map at the scale of 1:500 000 covers complexes of soil usefulness and soil types and subtypes. Basic characteristics such as granulometric composition, origin of the parent rock and land use attributes, i.e.: forest, grassland, arable land, waters or barren land, are also included. Apart from the soil coverage, the map contains 13 topographic coverages.
Źródło:
Acta Agrophysica; 2001, 50; 271-274
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alterations of some chemical and physico-chemical properties of selected soils in field ecosystems
Autorzy:
Laskowski, S
Toloczko, W.
Powiązania:
https://bibliotekanauki.pl/articles/1450264.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil chemistry
physicochemical property
chemical property
soil
soil salinity
geoecology
organic carbon
terrestrial ecosystem
macroelement
arable soil
Opis:
The research was conducted in 1991-1997 on the soils from arable fields situated near Łódź. To the detailed research there were stated four soil profiles which were different as regards their grain composition (two sand and two silt soils, all shallow) and typology (two profiles of brown leached soils, one pseudopodzolic-gley soil and one fallow glossic grey-brown podzolic soil). Qualification of the directions of the alterations in the content of organic carbon and basic macroelements (P, K, Mg) in soil and hesitation of reaction, hydrolytic acidity and content of the exchangeable basic cations in the soil sorptive complex were the main target of our research. The result of the 7-year-long research showed that different changes took place in the features of the examined soils. However, the exact assignment of the direction of these alteractions is extremely complex and does not warrant getting a satisfying answer. It is the result of taking various agriculture actions which are necessary to the appropriate maintenance of the ecosystems.
Źródło:
Acta Agrophysica; 2001, 50; 177-188
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The properties of humus in some profiles of the black earth-gleyic phaeozems - from the Malopolska Upland
Autorzy:
Mazurek, R
Niemyska-Lukaszuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/1450856.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil formation
water deposit
soil
humus
air condition
phosphorus
moisture condition
Malopolska Upland
black earth
terrestrial ecosystem
Opis:
The aim of the present research work was to evaluate the influence of lithogenic conditions on the physico-chemical properties, quantity and quality of humus components in the black earths from the Małopolska Upland. Soil samples were collected from 5 soil profiles which represented proper black earth (profiles No. 1-4) and degraded black earth (profile No. 5). All the investigated soils were under sward. The examined black earths were characterised by different physico-chemical properties strongly related to the parent rock type. Their pH level and sorption capability were decreasing with a decrease in the clay content of the soil texture. Humus resources were the lowest in sandy black earths (average 212 t ha-1) and the highest in the black earh derived from clay (454 t ha1). In the humus composition of the examined black earths, humic acids dominated over fulvic acids. In the A horizons, the Ch:Cf ratio was close to 1, and lower in the upper parts of these horizons which is typical of turf soils. Humus horizons in some of the investigated black earths were classified as epipedon anthropoid according to phosphorus content soluble in 1% citric acid (109 P kg-1 soil).
Źródło:
Acta Agrophysica; 2001, 50; 197-205
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Popularisation of soil science: its necessity and possibilities
Autorzy:
Brozek, S
Powiązania:
https://bibliotekanauki.pl/articles/1450560.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil function
soil structure
soil profile
soil monolith
soil science
environment
soil education
soil
ability
terrestrial ecosystem
Opis:
The author points to the necessity of propagating knowledge on the soil and suggests ways to do it. Firstly, he emphasises shortage of didactic aids for comprehensive teaching of soil science. He discusses this problem in comparison to other natural sciences far better known. As there are no useful teaching aids, the author draws our attention to the importance of the soil monolith, soil displays, posters and atlases. Moreover, he emphasises the role of Internet in education. Finally, he proposes to found a soil profile museum for educational purposes.
Źródło:
Acta Agrophysica; 2001, 50; 263-269
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computational predictive mutagenicity of similar chemicals for anthraquinone, β-sitosterol and quercetin found in Alternanthera tenella by using QSAR modeling software
Autorzy:
Haque, Mahmudul
Bhakat, Ram Kumar
Bhattacharjee, Aloke
Talapatra, Soumendra Nath
Powiązania:
https://bibliotekanauki.pl/articles/1182926.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Allelopathy; Allelochemicals; Alternanthera tenella; Invasive species; Terrestrial ecosystem; Predictive Ames mutagenicity; QSAR modeling; T.E.S.T. software
Opis:
The present study aims to evaluate the mutagenic potential of secondary metabolites viz. anthraquinone, β-sitosterol and quercetin present in Alternanthera tenella and their related analogus compounds similar in their molecular structure. Nine similar putative allelochemicals analogus to each of anthraquninone, β-sitosterol and quercetin respectively were selected, a total of twenty seven similar chemicals were studied for mutagenicity prediction. Ames mutagenicity prediction was carried out by using T.E.S.T. (Toxicity Estimation Software Tool) of USEPA. All experimental metadata were obtained from Toxicity Benchmark and T.E.S.T. The results clearly indicated that the allelochemicals, anthraquinone and its related eight compounds were mutagenic positive except benzanthrone (mutagenic negative) but all experimental data were found mutagenic positive. β-sitosterol showed mutagenic negative in both experimental and predicted value. It’s three related compounds were mutagenic positive but rest six related compounds mutagenic negative in predicted value while in experimental data, seven compounds were found mutagenic positive and rest two mutagenic negative. In case of quercetin, both data were obtained mutagenic positive while in related compounds, seven compounds were found to be mutagenic positive and two compounds mutagenic negative in predicted value. All were found to be mutagenic positive in experimental metadata. Such findings poses a curiosity that are there any possibilities of conversion or substitution in the position of aromatic ring of allelochemicals when present in soil? Because allelopathy depends upon several environmental stressors and mutagenicity may be induced by allelochemicals. It is suggesting for future research to detect metabolic pathway and mechanism of allelochemicals formation in A. tenella in presence of toxins in soil and to validate with other available 2D and 3D softwares.
Źródło:
World Scientific News; 2016, 49, 2; 162-191
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stratigraphic and geochemical differentiation of organogenic sediments in the river valley of Ciemiega as a result of anthropogenic alterations in the area of the river basin in the Holocene
Autorzy:
Borowiec, J
Urban, D.
Powiązania:
https://bibliotekanauki.pl/articles/1450833.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
loess area
organogenic sediment
Holocene
river valley
soil
sediment stratigraphy
geochemical differentiation
Lublin Upland
terrestrial ecosystem
Ciemiega River
Opis:
Anthropogenic alterations of the recent millennia of our era, in the loess areas of the Lublin Upland are clearly visible in the composition and character of the sediments that fill river valleys. This paper is an attempt to review this issue on the example of a small river valley that runs through the loess relief regions near Lublin. Samples were taken from deep drilling (up to 6 m) in the three cross-sections of the valley (Ożarów, Jastków, Snopków). A total of 172 samples taken from 5 drillings were investigated. The results obtained allow to conclude that delluvial processes dominated in the course of sediment formation that filled the Ciemięga river valley. Those delluvial processes started in the Neolyth by climatic changes and cutting down forests for the incoming agriculture - and have been intensified since the Middle Ages up till now. It is seen in a clear correlation between the growing part of ash components and mineral interbeddings in the peat deposits, as well as in the presence of cereal grains and weed pollen from cultivated fields in the investigated samples. In the chemical composition of the sediments, anthropogenic enrichment of K, P, Fe, Mn, Pb, Cr, Cu, Zn, and Co is observed.
Źródło:
Acta Agrophysica; 2001, 50; 29-40
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł

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