Analysis of environmental factors determining development and succession in biological soil crusts

Lan, Shubin; Wu, Li; Zhang, Delu; Hu, Chunxiang

doi:10.1016/j.scitotenv.2015.08.066

Cited by 63 publications

(40 citation statements)

References 42 publications

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“…On the contrary, photoautotroph biomass in biocrusts made great contributions to NRW. The effects of EPS and organic matter (del Prado and Sancho, 2007;Lan et al, 2011Lan et al, , 2015 were presumed to also mainly stem from photoautotrophs. Therefore, under the carrying capacity determined by thickness, the biomass of cryptogams and its related attributes played an important role in regulating diel NRW max .…”

Section: Discussionmentioning

confidence: 99%

“…The physicochemical characteristics of the five types of biocrusts, which vary with the succession of biocrusts (Lan et al, 2015) and affect NRW accumulation, were determined in the lab just after sampling and shown in Table 1. Coverage of biocrusts was visually estimated on biocrust surface, as described by Wu et al (2011).…”

Section: Physicochemical Characteristicsmentioning

confidence: 99%

“…Salinity was measured with multiparameter water quality analyzer (YSI-Proplus, USA). The organic matter content and total biomass were determined based on the methods described by Lan et al (2012Lan et al ( , 2015. EPS was quantified according to the phenol-sulphuric acid method as described by Li et al (2009).…”

Section: Physicochemical Characteristicsmentioning

confidence: 99%

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Mechanism of biocrusts boosting and utilizing non-rainfall water in Hobq Desert of China

Ouyang

Lan

Yang

et al. 2017

Applied Soil Ecology

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Section: Discussionmentioning

confidence: 99%

Section: Physicochemical Characteristicsmentioning

confidence: 99%

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Mechanism of biocrusts boosting and utilizing non-rainfall water in Hobq Desert of China

Ouyang

Lan

Yang

et al. 2017

Applied Soil Ecology

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“…Along with this succession sequence, the later successional stage (older BSCs) had a higher protective ability and nutrient content than did the other stages (Table , organic content, available nitrogen, and available phosphorus; Lan et al. ). It should be noted that there was a significant interaction effect of BSC treatment × exotic grass on the shoot biomass of the two native plant species.…”

Section: Discussionmentioning

confidence: 88%

“…In our research area, BSCs began colonizing the sand surface once the sand dune had been stabilized, and there were two successional stages during the development lichen crusts followed by moss crusts (Su et al 2009, Lan et al 2015, Young et al 2016). Compared to ❖ www.esajournals.org the lichen crusts, the moss crusts were found to have higher organic matter and available nitrogen and phosphorus contents during later succession (Table 1).…”

Section: Soil Physicochemical Propertiesmentioning

confidence: 97%

Biological soil crusts increase stability and invasion resistance of desert revegetation communities in northern China

Song

Rong

2020

Ecosphere

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Biological soil crusts (BSCs) in arid region provide critical ecosystem services. However, most previous studies on BSC–plant topic have had a narrow spatiotemporal and taxonomic focus, so context dependency concerning exotic plant responses to BSCs remains poorly understood. In this study, using a series of manipulative experiments under greenhouse conditions, we investigated the influence of BSCs in the Tengger Desert in northern China on seed germination and seedling growth of an exotic grass species, Stipa glareosa P. Smirn., with or without two native plants species, Eragrostis poaeoides Beauv. and Artemisia capillaris Thunb., both of whose ontogeny differs from that of the exotic species. BSC treatments included intact crusts, disturbed crusts, and bare soil. Compared to bare soil, the presence of BSCs reduced the germination of E. poaeoides and A. capillaris by 78% and 74%, respectively. For the exotic species, BSCs reduced the germination percentage by as much as 90%. With gradual increases in soil nutrients such as organic carbon, available phosphorus, and available nitrogen, the shoot biomass of the three plants increased along the sequence from bare soil to lichens and mosses. Shoot biomass of the two native plant species was reduced by the exotic species S. glareosa. The percent germination and shoot biomass of S. glareosa on the disturbed crusts were greater than those on the intact crusts and bare soils. Overall, the presence of BSCs on stabilized sand dunes can reduce the germination of these three plant species, but compared with native plant species, BSCs have a stronger inhibitory effect on the seed germination of the exotic plant species. However, the disturbance may weaken the inhibition of the seed germination of the exotic grass S. glareosa and may provide more nutrients for the exotic grass S. glareosa to establish a revegetation region. We concluded that compared with the absence of BSCs, BSCs in this desert ecosystem can provide more nutrients and a suitable environment for native vascular plants and exert an inhibitory effect on the exotic plants.

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Biological soil crusts determine the germination and growth of two exotic plants

Song

Rong

2017

Ecology and Evolution

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In arid and semiarid ecosystems, the potential threats of exotic invasive species are enhanced due to increasing human activities. Biological soil crusts (BSCs), acting as arid ecosystem engineers, may play an important role in preventing the establishment of exotic invasive plants. Our goal was to examine whether BSCs could inhibit the establishment of probable exotic plant species originating from adjacent grasslands located along the southeast edge of the Tengger Desert. In our study, we investigated the effects of three BSC types (cyanobacteria, lichen, and moss crusts) under two disturbance conditions (intact and disturbed) on the establishment of two exotic plant species (Ceratoides latens and Setaria viridis) using indoor experiments. We found both negative and positive effects of BSCs on the establishment of the two exotic plant species. Compared with the disturbed BSCs, the germination percentages of C. latens and S. viridis were reduced by 54% to 87% and 89% to 93%, respectively, in intact BSCs. In contrast, BSCs significantly promoted the height growth and aboveground biomass of the two exotic plant species (p < .05) by enhancing the soil water and nutrient availability for the exotic plants. Our results confirm that BSCs strongly suppress the rapid expansion of exotic plant populations by inhibiting germination of seed with big size or appendages and have a weak inhibitory effect on exotic plant with small and smooth seeds. This may decrease the threat of propagation of exotic species. In the meantime, BSCs promote the growth of a few successful engraftment seedlings, which increased the beta diversity. Our work suggests that better understanding the two opposing effects of BSCs on the establishment of exotic plant species in different growth stages (germination and growth) is important for maintaining the health and stability of revegetated regions.

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Analysis of environmental factors determining development and succession in biological soil crusts

Cited by 63 publications

References 42 publications

Mechanism of biocrusts boosting and utilizing non-rainfall water in Hobq Desert of China

Mechanism of biocrusts boosting and utilizing non-rainfall water in Hobq Desert of China

Biological soil crusts increase stability and invasion resistance of desert revegetation communities in northern China

Biological soil crusts determine the germination and growth of two exotic plants

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