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- W2932883599 abstract "Abstract In dryland ecosystems, land degradation and erosion pose severe threats to ecosystem productivity and human well‐being. Bio‐inoculation of degraded soils with native biological soil crusts (“biocrusts”) is a promising yet relatively untested means to improve soil stability and hydrological function (i.e., increase infiltration and reduce run‐off). In a degraded semiarid grassland on the Colorado Plateau, we studied the establishment and hydrological function (via simulated rainfall) of induced biocrusts grown with and without an organic soil stabilizer (psyllium, derived from Plantago sp.), after a period of 4 months. We found evidence of biocrust establishment, including significantly higher biocrust cover, chlorophyll a , and exopolysaccharides in inoculated plots compared with controls. Plots inoculated with biocrust had higher run‐off and sediment yields than controls during rainfall simulation. However, this effect was mitigated in plots where stabilizer was added, resulting in greater soil aggregate stability and higher levels of infiltration (reduced total run‐off). The time to ponding was significantly greater than control for all inoculated plots, suggesting that induced biocrusts may be most effective at improving infiltration under low‐intensity, smaller precipitation events. Notably, the biocrusts in this study lacked rough surface microtopography, which is common in well‐developed biocrusts regionally and likely instrumental in slowing overland flow and increasing infiltration for larger rain events. These results highlight the temporal lag that may exist between apparent and functional restoration of biocrusts. In addition, the simultaneous additions of stabilizing amendments with biocrust inoculum may work collectively to achieve both short‐ and long‐term restoration targets." @default.
- W2932883599 created "2019-04-11" @default.
- W2932883599 creator A5077450089 @default.
- W2932883599 creator A5089084488 @default.
- W2932883599 creator A5089844972 @default.
- W2932883599 date "2019-04-30" @default.
- W2932883599 modified "2023-10-16" @default.
- W2932883599 title "Hydrological function of rapidly induced biocrusts" @default.
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- W2932883599 doi "https://doi.org/10.1002/eco.2089" @default.
- W2932883599 hasPublicationYear "2019" @default.