Changes in morphologic, hydraulic, and hydrodynamic properties of rill erosion due to surface inoculation of endemic soil cyanobacteria

Effects of surface inoculation of biological soil crusts on laminar overland flow resistance

“…In fact, while Kheirfam and Roohi (2020) measured the roughness height of the inoculated trays, finding the highest roughness for Cy, the flow resistance of the data by Jafarpoor et al (2022) and Sadeghi et al (2023) is influenced by the infiltration rate and, consequently, it is not possible to directly compare the different treatments. In other words, the observation by Kheirfam and Roohi (2020) is direct and allows for a comparison between the different treatments, while the treatments by Jafarpoor et al (2022) and Sadeghi et al (2023) cannot be compared to detect a trend.…”

“…Limited information is currently available on the effect of Biological Soil Crusts on overland flow resistance. In this paper, the applicability of a theoretically deduced overland flow resistance equation was tested using the database by Jafarpoor et al (2022) and Sadeghi et al (2023) for bare soil, used as a control condition, and three inoculated soils (cyanobacteria, bacteria, and cyanobacteria+bacteria).…”

“…in performing measurements regarding this topic to achieve strong results and conclusions. Since the studies by Jafarpoor et al (2022) and Sadeghi et al (2023) were performed using a single value of plot slope, new measurements should be carried out testing different slopes, reasonably varying from 10 to 40%. Other studies could investigate the effects of inoculating the same microorganisms in different soils to test how soil texture and hydrological characteristics (i.e., hydraulic conductivity) influence the effectiveness of BSC.…”

“…The influence of BSCs on flow resistance is a little-explored topic, and the papers by Jafarpoor et al (2022) and Sadeghi et al (2023) can be considered pioneering in the study of water erosion in soils with microbial inoculum. Jafarpoor et al (2022) showed the effectiveness of cyanobacterial inoculation on mid-scale plots under laboratory conditions and reported inoculum influences on overland flow generation, hydraulic and hydrodynamic components of the flow, soil erosion, rill formation, and rill characteristics. Cyanobacteria inoculation affected hydraulic components of the flow (velocity, water depth, Froude number, and Reynolds number) and modified morphological factors of interrill and rilled areas (depth, mean width, maximum length, and density).…”

Terrestrial algae: pioneer organisms of carbonate rock solutional weathering in South China karst

“…The total area of the sampling region was 51.62 km 2 , including bare land (BL), grass land (GL), shrub land (SL) and woodland (WL). The fresh samples were cultured, separated, and purified in lab ( Jafarpoor et al, 2022 ). Two dominant algae species of different forms ( Chlorella vulgaris Beijerinck and Klebsormidium dissectum (F.Gay) H.Ettl & G.Gärtner, which belong to Chlorella Beijerinck, Chlorellaoideae, Charophyta and Klebsormidium, Klebsormidiophyceae, respectively) were screened out and used after expansion ( Figure 1 ).…”