scholarly journals COMPARATIVE ANALYSIS OF SOIL DEGRADATION AND SOIL STRUCTURE IN CROPLANDS AFFECTED BY EROSION AND SOIL DEHYDRATION TREATED WITH A BIOLOGICAL SOIL CRUST FORMING ALGAL CULTURE

2021 ◽  
Vol 9 (1) ◽  
pp. 57
Author(s):  
Péter Futó ◽  
Balázs Madarász ◽  
Gábor Bernát ◽  
Máté Futó ◽  
Gergely Jakab ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Soil Degradation ◽  
Soil Structure ◽  
Biological Soil Crust ◽  
Algal Culture ◽  
Soil Crust

Biological soil crust distribution on the Boardman Conservation Area

2010 ◽  
Author(s):  
Adrien Elseroad ◽  
Joseph St. Peter ◽  
Maile Uchida
Keyword(s):  
Biological Soil Crust ◽  
Soil Crust ◽  
Conservation Area

scholarly journals Functional ecology of the biological soil crust in semiarid SE Spain: sun and shade populations of Diploschistes diacapsis (Ach.) Lumbsch.

2005 ◽  
Vol 37 (5) ◽  
pp. 425-432 ◽  
Author(s):  
Ana PINTADO ◽  
Leopoldo G. SANCHO ◽  
T. G. Allan GREEN ◽  
José Manuel BLANQUER ◽  
Roberto LÁZARO
Keyword(s):  
Water Content ◽  
Chlorophyll Content ◽  
Unit Area ◽  
Biological Soil Crust ◽  
Dry Weight ◽  
Mean Annual Precipitation ◽  
Plant Colonization ◽  
Soil Crust ◽  
Active Time ◽  
Exposed Population

The Tabernas badlands in semiarid south-east Spain is one of the driest regions in Europe with a mean annual precipitation of c. 240 mm. The landscape is deeply dissected, with canyons, ramblas and sparsely vegetated eroded badland slopes. The vegetation is predominantly a biological soil crust consisting of different types of lichen-rich communities, one of the more conspicuous being dominated by Diploschistes diacapsis (Ach.) Lumbsch. This lichen is mainly restricted to the north- facing slopes, where it forms extensive whitish carpets and probably plays an important role in preventing erosion of the slopes and allowing plant colonization. South-facing slopes are much more eroded and generally lack vegetation. %The photosynthetic performance of north (shade) and south-facing (sun) populations of D. diacapsis was studied to determine if these different populations showed any adaptations to the microclimatic conditions of their individual habitats. The response of CO2 exchange to light intensity, temperature and water content was measured under controlled conditions in the laboratory. Dry weight-based net photosynthetic rates were higher in the southern-exposed population but quantum efficiency, and light compensation points were similar. Thallus weight per unit area (LMA) was considerably higher for shade specimens but maximum water content and optimal water content were very similar and chlorophyll content on a dry weight basis was also similar. Chlorophyll content on an area basis was higher in the northern-exposed population and always much larger than those reported in other studies on the same species (up to 8 times larger) with the result that NP values on a chlorophyll basis were relatively low. The larger LMA meant that shade thalli stored more water per unit area which should ensure longer active periods than sun thalli. The results support a strategy pair of high NP and short active time versus low NP and long active time, both having been reported for other soil crust species. However, the visibly larger biomass of the shade D. diacapsis suggests that the lichen is at the limit of its adaptability in these habitats.

Temporal shifts in cyanobacterial diversity and their relationships to different types of biological soil crust in the southeastern Tengger Desert

Rhizosphere ◽  
2021 ◽  
Vol 17 ◽  
pp. 100322
Author(s):  
Xiao-Chong Zhang ◽  
Jing-Yu Li ◽  
Jian-Li Liu ◽  
Cun-Xia Yuan ◽  
Yan-Nan Li ◽  
...  
Keyword(s):  
Biological Soil Crust ◽  
Soil Crust ◽  
Tengger Desert ◽  
Different Types ◽  
Cyanobacterial Diversity ◽  
Temporal Shifts

scholarly journals Effect of Earthing Enhancing Compound (EEC) on Improving Tower Footing Resistance of a 500 kV Tower in a Rocky Area

2021 ◽  
Vol 11 (12) ◽  
pp. 5623
Author(s):  
Nur Alia Farina Mohd Nasir ◽  
Mohd Zainal Abidin Ab Kadir ◽  
Miszaina Osman ◽  
Muhamad Safwan Abd Rahman ◽  
Ungku Anisa Ungku Amirulddin ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Comparative Analysis ◽  
Transmission Line ◽  
Structure Analysis ◽  
Current Distribution ◽  
Soil Profile ◽  
Soil Structure ◽  
Soil Resistivity ◽  
Transmission Towers ◽  
Rocky Soil

This paper presents a comparative analysis of different earthing designs’ performances, with particular interest on the use of earthing enhancing compound (EEC) for a selected earthing design of 500 kV transmission towers in a rocky soil, using the SESCAD tool of the Current distribution, electromagnetic field grounding and soil structure analysis (CDEGS) software. The simulation included the interpretation of soil profile and comparison between designs A, B and C, which are currently used for the 500 kV tower footing resistance (TFR) improvement. Results showed each design had reduced the TFR by 66%, 54.7% and 63.2% for the towers T42, T48 and T50, respectively. In some cases, further improvement of TFR is required, especially in the rocky area where the soil resistivity (SR) value is of more than 500 Ω⋅m. In this case, EEC was used in Design C, encasing both the vertical and horizontal electrodes, and it reduced the TFR further by 16% to 20%. The characteristics of the soil and earthing arrangement design play an important role in achieving a low TFR value, which is directly proportional to the backflashover occurrence and thus to the transmission line performance.

scholarly journals Functional profiles reveal unique ecological roles of various biological soil crust organisms

2011 ◽  
Vol 25 (4) ◽  
pp. 787-795 ◽  
Author(s):  
Matthew A. Bowker ◽  
Rebecca L. Mau ◽  
Fernando T. Maestre ◽  
Cristina Escolar ◽  
Andrea P. Castillo-Monroy
Keyword(s):  
Biological Soil Crust ◽  
Soil Crust ◽  
Ecological Roles ◽  
Functional Profiles

scholarly journals Testing a model of biological soil crust succession

2015 ◽  
Vol 27 (1) ◽  
pp. 176-186 ◽  
Author(s):  
Cassia F. Read ◽  
Jane Elith ◽  
Peter A. Vesk
Keyword(s):  
Biological Soil Crust ◽  
Soil Crust

scholarly journals Effects of simulated warming on biological soil crust-soil system respiration in alpine sandy lands

2020 ◽  
Vol 44 (9) ◽  
pp. 916-925
Author(s):  
He-Ju ZHAO ◽  
Yan-Peng YUE ◽  
Xiao-Hong JIA ◽  
Long CHENG ◽  
Bo WU ◽  
...  
Keyword(s):  
Biological Soil Crust ◽  
Soil Crust ◽  
Soil System
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