Variability of enzymatic activity in forest Cambisols and Brunic Arenosols of Polish lowland areas

2013 ◽  
Vol 64 (2) ◽  
pp. 54-59 ◽  
Author(s):  
Ewa Błońska ◽  
Jarosław Lasota ◽  
Kazimierz Januszek
Keyword(s):  
Enzymatic Activity ◽  
National Parks ◽  
Chemical Properties ◽  
Soil Surface ◽  
Surface Layers ◽  
Physico Chemical ◽  
Lowland Area ◽  
The Relationship ◽  
Properties Of Soil ◽  
Humus Horizons

Abstract The aim of this study was to determine the enzymatic activity (dehydrogenase and urease) in trophically diverse Brunic Arenosols and Cambisols. Efforts to establish the relationship between enzymatic activity and physico-chemical properties of various subtypes of Brunic Arenosols and Cambisols were attempted. Another aim was to determine the effect of vegetation on the properties of soil surface levels. The study was conducted on 94 plots located in nature reserves and national parks in the Polish lowland area. Dehydrogenase activity and urease showed large variations in the subtypes of the distinguished Brunic Arenosols and Cambisols. Dehydrogenases and urease activity in surface layers of fresh humus of Cambisols and Brunic Arenosols was strongly associated with the plants. This is confirmed by the relationship between the enzymatic activity and the type of accumulated humus substances, the ratio of carbon to nitrogen and humus horizons reaction.

Enzyme Activity in Forest Gleysols

2012 ◽  
Vol 63 (4) ◽  
pp. 3-8 ◽  
Author(s):  
Ewa Błońska ◽  
Jarosław Lasota ◽  
Kazimierz Januszek
Keyword(s):  
Organic Matter ◽  
Enzyme Activity ◽  
Enzymatic Activity ◽  
Dehydrogenase Activity ◽  
Urease Activity ◽  
Chemical Properties ◽  
Soil Enzyme ◽  
Opposite Trend ◽  
Physico Chemical ◽  
The Relationship

Abstract The aim of this study was to determine the enzymatic activity (dehydrogenase and urease) in trophically diverse Gleysols. Efforts to establish the relationship between enzymatic activity and physico-chemical properties of various subtypes of Gleysols were attempted. Dehydrogenase activity was best correlated with carbon content and acidity among the studied properties of soils. Urease activity was correlated with the reaction pf soil. Enzyme activity differentiates subtypes of Gleysols, which are characterized by a different type of soil humus. The dehydrogenase activity was higher in gleysols with peat or muck of swamp habitats. The opposite trend was found in the urease activity. The urease activity was the highest in the gleysols without organic matter. The studies showed that enzymatic activity is closely related to the type of accumulated organic matter and at the same time with species variety of plant communities..

scholarly journals Diurnal vertical migration of some cladocerans in relation to the physico-chemical factors in a fish pond

1970 ◽  
Vol 20 (2) ◽  
pp. 147-154 ◽  
Author(s):  
AS Bhuiyan ◽  
S Akhter ◽  
MMA Quddus
Keyword(s):  
Key Words ◽  
Vertical Migration ◽  
Fish Pond ◽  
Chemical Parameters ◽  
Surface Layers ◽  
Diurnal Vertical Migration ◽  
Physico Chemical ◽  
Chemical Factors ◽  
Diurnal Movement ◽  
The Relationship

Diurnal vertical migration of four genera of cladocerans, namely Diaphanosoma sp., Daphnia sp., Moina sp. and Bosmina sp., during March to December, 2007 showed that the number of Diaphanosoma sp. was 501 units/1 in the surface layers, 172 units/l in the middle layers and 190 units/l in the bottom layers. The yearly number of Daphnia sp. in surface, middle and bottom layerss was 362 units/l, 46 units/l and 189 units/l respectively. In surface, bottom and middle layers, the number of Moina sp. was 159, 71 and 32 units/l, respectively. Bosmina sp. was 78 units/l in surface, 31 units/l in the middle and 33 units/l in the bottom layers. The number of Diaphanosoma sp., Daphnia sp., Moina sp., Bosmina sp., were 455, 149, 259 and 358 units/l, respectively in the morning, 63, 176, 142, 43 units/l at noon and 107, 55, 28, 59 units/l, respectively in the evening. Throughout the study period the cladocerans were always abundant near the surface during morning and evening. Among the factors responsible for the diurnal movement of cadoceran, light played the most important factor. The relationship between the physico-chemical factors and the cladoceran occurrence in the pond was also explored. Key words: Cladocera; Diurnal migration; Physico-chemical parameters; Fish pond DOI: http://dx.doi.org/10.3329/dujbs.v20i2.8975 DUJBS 2011; 20(2): 147-154

scholarly journals Properties of degraded and reclaimed soils in the area of the abandoned “Jeziórko” sulfur mine (Poland)

2016 ◽  
Vol 67 (4) ◽  
pp. 163-172 ◽  
Author(s):  
Renata Knap ◽  
Janina Kaniuczak ◽  
Edmund Hajduk ◽  
Adam Szewczyk
Keyword(s):  
Organic Carbon ◽  
Total Nitrogen ◽  
Chemical Properties ◽  
Soil Surface ◽  
Mineral Fertilizers ◽  
Forest Land ◽  
Degraded Land ◽  
Surface Layers ◽  
Reclaimed Soil ◽  
Reclaimed Soils

Abstract The aim of the study was to determine some physicochemical and chemical properties of post-mining soils reclaimed in different directions, after completed sulfur exploitation by means of the borehole (Frash) method. The study was conducted in 2013 in the former Sulfur Mine „Jeziórko” located on the Tarnobrzeg Plain between Tarnobrzeg and Stalowa Wola cities (Podkarpackie Voivodeship, south Poland). It covered an area of land reclaimed as the arable or forest land. The most important problems connected with sulfur exploitation was the occurrence of a layer of solid sulfur which was previously removed. During the reclamation process, embankments and excavations were leveled through replenishing large amounts of ground, post-flotation lime, mineral fertilizers, and sewage sludge. Moreover, studies upon degraded and non-reclaimed area (by 2013) were also carried out. Examined land was characterized by granulometric composition of sands, loamy sands, and sandy loams. Re-leveling of degraded land using post-flotation lime contributed to lower levels of acidification of reclaimed soil surface. The highest contents of organic carbon and total nitrogen were found in the surface layers of the soils studied. Content of available potassium ranged from very low to average. The soils were characterized by a high content of available magnesium in the surface layers of the profiles (maximum 71.8 mg·kg−1 in soil reclaimed as forest land), while below the Mg content was usually low. Contents of individual exchangeable cations could be lined up in a following decreasing sequence: Ca2+>Na+>K+>Mg2+ Referring to the topsoil, reclaimed soils were characterized by more favorable properties (pH close to neutral, lower acidity, higher sorption capacity, higher organic carbon, total nitrogen, and available forms of phosphorus, potassium, and magnesium concentrations) as compared to non-reclaimed soil.

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