Regeneration processes of biological soil crusts, macro-cryptogams and vascular plant species after fine-scale disturbance in a temperate region: Recolonization or successional replacement?

Langhans, Tanja Margrit; Storm, Christian; Schwabe, Angelika

doi:10.1016/j.flora.2008.12.001

Cited by 51 publications

(40 citation statements)

References 79 publications

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“…Algae crusts normally represent a primary successional stage, are flat, brittle and light. But they can also facilitate crust succession to later stages due to their ability of improving the surface microenvironments and enhancing the probability of colonization and survival of later successional species (Kurina and Vitousek 1999;Acea et al 2003;Lukešová 2001;Hu and Liu 2003a;Langhans et al 2010), which is consistent with the ''facilitation model'' of Connell and Slatyer (1977). Eldridge and Greene (1994) and Zaady et al (2000) also found the cyanobacteria first colonized the soil surface, on which the well-developed lichen and moss crusts grew later.…”

Section: Succession Of Bscssupporting

confidence: 63%

Successional stages of biological soil crusts and their microstructure variability in Shapotou region (China)

et al. 2011

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In order to investigate succession of biological soil crusts (BSCs) and their microstructure variability, we conducted this work in Shapotou revegetation region at the southeast edge of Tengger Deser. The results showed that BSCs generally succeeded as a pathway of ''Algae crusts, algae-lichen crusts, lichen crusts, lichen-moss crusts and moss crusts''. Occasionally mosses directly occurred on algae crusts, and BSCs succeeded from algae crusts to moss crusts. Crust vertical stratification was a common phenomenon, from top to bottom an inorganic layer, algaedense layer and algae-sparse layer were divided in algae crusts; a thallus layer, rhizoid layer and sub-rhizoid layer in lichen crusts; a ''stem-leaf'' layer, rhizoid layer and subrhizoid layer in moss crusts, respectively. The main crust binding organisms varied from filamental cyanobacteria (dominated by Microcoleus) in algae crusts to lichen rhizoids, free-living cyanobacterial filaments and fungal hyphaes in lichen crusts, and to moss rhizoids and fungal hyphaes in moss crusts. The dominant phototrophic organisms varied from Microcoleus (algae) in algae crusts to Collema (lichens) in lichen crusts, and to Bryum (or Didymodon and Tortula; mosses) in moss crusts. Total phototrophic biomass increased while the free-living algal biomass decreased with the succession of BSCs. In addition, exopolysaccharides and fine particles accumulated in the course of development and succession of BSCs, all of which lead to a gradual increase in crust thickness and porosity, while decrease in the bulk density.

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Section: Succession Of Bscssupporting

confidence: 63%

Successional stages of biological soil crusts and their microstructure variability in Shapotou region (China)

et al. 2011

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“…Furthermore, plants facilitate or discourage animal digging and trampling. Often, biocrust absolute cover and richness are greater in microsites with a sparse cover of vascular plants (e.g., Eldridge et al 2002Eldridge et al , 2005Pintado et al 2005;Langhans et al 2010;Zaady et al 2013) and litter (e.g., Briggs and Morgan 2008;Serpe et al 2013;Zhang et al 2013). …”

Section: Vegetation Cover and Spatial Patternsmentioning

confidence: 99%

Controls on Distribution Patterns of Biological Soil Crusts at Micro- to Global Scales

Bowker

Belnap²,

Büdel

et al. 2016

Biological Soil Crusts: An Organizing Principle in Drylands

114

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“…Filamentous cyanobacteria play an important role in the formation of BSCs due to their special performances, including relatively rapid growth, migration, and their extraordinary abilities to survive desiccation, radiation, extreme temperatures, high pH, and salinity [9,13,29,30]. Once BSCs have formed, their development and succession would be a natural process, and this process would be affected by ambient microenvironments such as soil structure and types, radiation intensity, topographic attributes, and so on [2,5,9,[31][32][33]. Limited availability of resources, such as water, time, and space, also would stop the successional stage at a certain state [19,34].…”

Section: Level Of Development and Successional Stages In Bscsmentioning

confidence: 99%

Assessing Level of Development and Successional Stages in Biological Soil Crusts with Biological Indicators

Lan

Zhang

et al. 2013

Microb Ecol

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Biological soil crusts (BSCs) perform vital ecosystem services, but the difference in biological components or developmental level still affects the rate and type of these services. In order to differentiate crust successional stages in quantity and analyze the relationship between crust developmental level and successional stages, this work determined several biological indicators in a series of different developmental BSCs in the Shapotou region of China. The results showed that crust developmental level (level of development index) can be well indicated by crust biological indicators. Photosynthetic biomass was the most appropriate to differentiate crust successional stages, although both photosynthetic biomass and respiration intensity increased with the development and succession of BSCs. Based on of the different biological compositions, BSCs were quantificationally categorized into different successional stages including cyanobacterial crusts (lichen and moss coverages <20 %), lichen crusts (lichen coverage >20 % but moss coverage <20 %), semi-moss crusts (moss coverage >20 % but <75 %), and moss crusts (moss coverage >75 %). In addition, it was found that cyanobacterial and microalgal biomass first increased as cyanobacterial crusts formed, then decreased when lots of mosses emerged on the crust surface; however nitrogen-fixing cyanobacteria and heterotrophic microbes increased in the later developmental BSCs. The structural adjustment of biological components in the different developmental BSCs may reflect the requirement of crust survival and material transition.

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Regeneration processes of biological soil crusts, macro-cryptogams and vascular plant species after fine-scale disturbance in a temperate region: Recolonization or successional replacement?

Cited by 51 publications

References 79 publications

Successional stages of biological soil crusts and their microstructure variability in Shapotou region (China)

Successional stages of biological soil crusts and their microstructure variability in Shapotou region (China)

Controls on Distribution Patterns of Biological Soil Crusts at Micro- to Global Scales

Assessing Level of Development and Successional Stages in Biological Soil Crusts with Biological Indicators

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