The variability of phosphorus fractions in sediments of a shallow, restored Antoninek Reservoir (Poznań, Poland)

The variability of phosphorus fractions in sediments of a shallow, restored Antoninek Reservoir (Poznań, Poland) Spatial and temporal variability of phosphorus (P) fractions content in bottom sediments of a shallow preliminary reservoir was studied in Antoninek, situated in Poznań. Fractions were analyzed at least once in a season (more often in spring and summer) between August 2004 and November 2005 according to the fractioning protocol proposed by Psenner et al. (1988). Circa 10 cm thick sediment layers were collected from three study sites, situated along the main axis of the reservoir. The contribution of NH4Cl-P and BD-P, i.e. the most accessible fractions biologically was similar at all stations (usually below 10%). The share of other fractions increased according to the sequence NaOH-RP < NaOH-NRP < HCl-P < Res-P. Only at station 1 the amount of phosphorus related to organic matter was lower than with aluminum. The domination of Res-P fraction indicated that the main part of phosphorus in sediment is biologically unavailable, therefore the intensity of phosphorus loading from sediments shall be low. However, high organic matter content, noted in sediments of Antoninek Reservoir, determined great amount of NaOH-NRP fraction. Both parameters remained under the influence of mats of macroalgae, growing intensively in the reservoir during vegetation season. The role of sediments as a source of phosphorus for water column enlarged, due to increased organic matter decomposition, especially in periods of high water temperature in this shallow reservoir.

Download Full-text

Ecohydrological effectiveness of litter crusts in sandy ecosystem

10.5194/hess-2018-579 ◽

2018 ◽

Author(s):

Yu Liu ◽

Zeng Cui ◽

Ze Huang ◽

Hai-Tao Miao ◽

Gao-Lin Wu

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Organic Matter Content ◽

Terrestrial Ecosystems ◽

Infiltration Rate ◽

High Water ◽

Matter Content ◽

Water Infiltration ◽

Desert Ecosystems ◽

Positive Effects

Abstract. Litter crusts are integral components of the water budget in terrestrial ecosystems, especially in arid areas. This innovative study is to quantify the ecohydrological effectiveness of litter crusts in desert ecosystems. We focus on the positive effects of litter crusts on soil water holding capacity and water interception capacity compared with biocrusts. Litter crusts significantly increased soil organic matter, which was 2.4 times the content in biocrusts and 3.84 times the content in bare sandy lands. Higher organic matter content resulted in increased soil porosity and decreased soil bulk density. Meanwhile, soil organic matter can help to maintain maximum infiltration rates. Litter crusts significantly increased the water infiltration rate under high water supply. Our results suggested that litter crusts significantly improve soil properties, thereby influencing hydrological processes. Litter crusts play an important role in improving hydrological effectiveness and provide a microhabitat conducive to vegetation restoration in dry sandy ecosystem.

Download Full-text

Assessing Spatial and Temporal Variability for Some Edaphic Characteristics of Mediterranean Rainfed and Irrigated Soils

Agronomy ◽

10.3390/agronomy9030132 ◽

2019 ◽

Vol 9 (3) ◽

pp. 132 ◽

Cited By ~ 1

Author(s):

José Telo da Gama ◽

José Rato Nunes ◽

Luís Loures ◽

António Lopez Piñeiro ◽

Paulo Vivas

Keyword(s):

Organic Matter ◽

Sustainable Use ◽

Organic Matter Content ◽

Western Mediterranean ◽

Matter Content ◽

Spatial And Temporal Variability ◽

Western Mediterranean Basin ◽

Classical Statistics ◽

Low Levels ◽

The Individual

Mediterranean soils are particularly threatened by salinization and low levels of organic matter content. In order to assess an edaphic sustainable use, we need to study its characteristics and better understand the temporal and spatial evolution. In this study, a total of 14,852 ha located in a western Mediterranean basin were selected as the study site where 1417 and 1451 topsoil samples were analyzed in 2001/2002 and 2011/2012, respectively, for Soil Organic Matter (SOM) content, pH water (pHw) and electrical conductivity (EC). Classical statistics and geostatistics techniques were used and the individual soil samples were related with the cultural system (CS) practiced–rainfed/irrigation–and the Reference Soil Group (RSG)–Cambisols, Calcisols, Luvisols, and Fluvisols. Predictive maps were created by interpolation using the Ordinary Kriging algorithm. The main results of this study were that, when transitioning from a rainfed to irrigation CS, SOM content is maintained in Cambisols but decreases in the other RSGs, pHw is maintained and EC increases in Fluvisols, Luvisols, and Cambisols. Over time in the rainfed CS all RSGs maintained SOM and pHw but EC increased in Fluvisols, Luvisols, and Calcisols and in the irrigation CS SOM decreased in Luvisols, pHw increased in Fluvisols and Calcisols and EC increased in all RSGs.

Download Full-text

Influence of Alternative Drying-Wetting on Phosphorus Fractions in Soils with Different Organic Matter Content and Environmental Implications

Advances in Environmental Protection ◽

10.12677/aep.2012.22003 ◽

2012 ◽

Vol 02 (02) ◽

pp. 15-19 ◽

Cited By ~ 1

Author(s):

琳琳魏

Keyword(s):

Organic Matter ◽

Organic Matter Content ◽

Matter Content ◽

Phosphorus Fractions ◽

Environmental Implications

Download Full-text

Water repellency decreases with increasing carbonate content and pH for different biocrust types on sand dunes

Journal of Hydrology and Hydromechanics ◽

10.2478/johh-2021-0022 ◽

2021 ◽

Vol 69 (4) ◽

pp. 369-377

Author(s):

Sylvie Laureen Drahorad ◽

Vincent J. M. N. L. Felde ◽

Ruth H. Ellerbrock ◽

Anja Henss

Keyword(s):

Organic Matter ◽

Sand Dunes ◽

Organic Matter Content ◽

Soil Surface ◽

Water Repellency ◽

Matter Content ◽

Carbonate Content ◽

Biological Communities ◽

Local Water ◽

Study Sites

Abstract Biocrusts are biological communities that occupy the soil surface, accumulate organic matter and mineral particles and hence strongly affect the properties of the soils they cover. Moreover, by affecting water repellency, biocrusts may cause a preferential infiltration of rainwater, with a high impact on the formation of local water pathways, especially for sand dunes. The aim of this study is to shed light on the connections between water repellency and pH, carbonate and organic matter content in two dune ecosystems with different biocrust types. For this, we used contact angle measurements, gas volumetric carbonate determination and organic matter characterization via FT-IR and TOF-SIMS. In both ecosystems, moss-dominated biocrusts showed higher water repellency and higher amounts of organic matter compared to algal or cyanobacterial biocrusts. Surprisingly, the biocrusts of the two dune systems did not show differences in organic matter composition or organic coatings of the mineral grains. Biocrusts on the more acidic dunes showed a significantly higher level of water repellency as compared to higher carbonate containing dunes. We conclude that the driving factor for the increase in water repellency between cyanobacterial and moss-dominated biocrusts within one study site is the content of organic matter. However, when comparing the different study sites, we found that higher amounts of carbonate reduced biocrust water repellency.

Download Full-text

N2O emission from mineral soils – Reviews

Research in Agricultural Engineering ◽

10.17221/4937-rae ◽

2012 ◽

Vol 50 (No. 3) ◽

pp. 117-122 ◽

Cited By ~ 1

Author(s):

T. Włodarczyk ◽

J. Gliński ◽

U. Kotowska

Keyword(s):

Organic Matter ◽

Ph Value ◽

Nitrate Concentration ◽

Organic Matter Content ◽

Matter Content ◽

Spatial And Temporal Variability ◽

Soil Nitrate ◽

Complicated Manner ◽

Mineral Soils ◽

N Compounds

Increasing deposition of N-compounds cause environmental problems such as leaching of nitrate or enhanced emission of N2O. Most N2O is formed from dissimilatory reduction of nitrate in oxygen deficient environment, although it can also be produced from chemolitotrophic and heterotrophic nitrification and assimilatory reduction of nitrate in aerobic conditions. N2O production is affected by many physical and biochemical factors, such as: the nature and amount of organic matter available as energy sources to the denitrifiers and heterotrophic nitrifiers, the aeration/moisture status of the soil, the soil nitrate concentration, soil pH, and the soil texture. These factors interact in a complicated manner with microorganisms on a microscale level in the soil, creating the large spatial and temporal variability in denitrification and and influenced on N2O/N ratio. The N2O emission increased linearly with NO3– reduction and curvilinearly with organic matter content, dehydrogenase activity and pH value and decreased curvilinearly with oxygen content.

Download Full-text

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

Moscow University Bulletin. Series 4. Geology ◽

10.33623/0579-9406-2018-3-46-54 ◽

2018 ◽

pp. 46-54

Author(s):

O. A. Lipatnikova

Keyword(s):

Heavy Metal ◽

Organic Matter ◽

Bottom Sediments ◽

Metal Speciation ◽

Organic Matter Content ◽

Water Reservoir ◽

Matter Content ◽

Heavy Metal Speciation ◽

Mobile Forms ◽

Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

Download Full-text

Changes in organic matter content of soil as a result of long-term fertilization

Cereal Research Communications ◽

10.1556/crc.33.2005.1.12 ◽

2005 ◽

Vol 33 (1) ◽

pp. 53-55

Author(s):

Katalin Berecz ◽

Katalin Debreczeni

Keyword(s):

Organic Matter ◽

Organic Matter Content ◽

Matter Content

Download Full-text

Physico-Chemical Properties of Soil Collected from Chandrabhaga River in Kalmeshwar, Nagpur, Maharashtra

Journal of Advanced Research in Alternative Energy Environment and Ecology ◽

10.24321/2455.3093.202006 ◽

2020 ◽

Vol 07 (02) ◽

pp. 1-3

Author(s):

Amita M Watkar ◽

Keyword(s):

Organic Matter ◽

Soil Quality ◽

Agricultural Land ◽

Organic Matter Content ◽

Chemical Properties ◽

Matter Content ◽

Soil Attributes ◽

Essential Components ◽

Agricultural Land Management ◽

Physical And Chemical

Soil, itself means Soul of Infinite Life. Soil is the naturally occurring unconsolidated or loose covering on the earth’s surface. Physical properties depend upon the amount, size, shape, arrangement, and mineral composition of soil particles. It also depends on the organic matter content and pore spaces. Chemical properties depend on the Inorganic and organic matter present in the soil. Soils are the essential components of the environment and foundation resources for nearly all types of land use, besides being the most important component of sustainable agriculture. Therefore, assessment of soil quality and its direction of change with time is an ideal and primary indicator of sustainable agricultural land management. Soil quality indicators refer to measurable soil attributes that influence the capacity of a soil to function, within the limits imposed by the ecosystem, to preserve biological productivity and environmental quality and promote plant, animal and human health. The present study is to assess these soil attributes such as physical and chemical properties season-wise.

Download Full-text