Bromus tectorum litter alters photosynthetic characteristics of biological soil crusts from a semiarid shrubland

Serpe, Marcelo D.; Roberts, Eric; Eldridge, David J.; Rosentreter, Roger

doi:10.1016/j.soilbio.2013.01.030

Cited by 31 publications

(20 citation statements)

References 57 publications

(85 reference statements)

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“…It is assumed that young mosses are even more sensitive to physiological stress than mature mosses, so establishment and growth of mosses may have been prevented in treated plots. Sawdust cover, like litter, can reduce light and induce dieback of mosses (Serpe et al 2013). In our experiment, it is unlikely that light was a limiting factor because of the delayed effect of application for 3, 4 or 5 years.…”

Section: Discussionmentioning

confidence: 65%

“…Sawdust cover, like litter, can reduce light and induce dieback of mosses (Serpe et al . ). In our experiment, it is unlikely that light was a limiting factor because of the delayed effect of application for 3, 4 or 5 years.…”

Section: Discussionmentioning

confidence: 97%

“…; Serpe et al . ). Soil crusts create special microenvironment with altered light, microclimate and soil characteristics, thus affecting seed dispersal, germination and survival of vascular plants (Jeschke & Kiehl ; Su et al .…”

Section: Introductionmentioning

confidence: 97%

“…The outcome of nitrogen immobilization differs if tested for seedling establishment and survival (Averett et al 2004;Bleier & Jackson 2007;Biederman & Whisenant 2009;Brunson, Pyke & Perakis 2010;Desserud & Naeth 2013) vs. effects on established vegetation (Morghan & Seastedt 1999;Prober et al 2005;Spiegelberger et al 2009;Larchevêque et al 2010;Mitchell & Bakker 2011). Studies generally focus on vascular species response; however, biological soil crusts might have important roles in certain habitat types (Langhans, Storm & Schwabe 2009;Su et al 2009;Serpe et al 2013). Soil crusts create special microenvironment with altered light, microclimate and soil characteristics, thus affecting seed dispersal, germination and survival of vascular plants (Jeschke & Kiehl 2008;Su et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Long‐term outcome of nitrogen immobilization to restore endemic sand grassland in Hungary

Török

Szitár

Halassy

et al. 2014

Journal of Applied Ecology

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Summary1. Soil nitrogen immobilization by carbon amendment is a management technique used for conservation purposes to increase the competitive ability of late-seral plant species over earlyseral species based on their different tolerance of low soil nitrogen content. 2. We immobilized nitrogen over six growing seasons on three ex-arable fields with poor sandy soils in the Hungarian lowland in order to restore endemic sandy grassland. Sucrose and sawdust were applied at rates based on previous laboratory experiments using local soils. We tested the efficacy of long-term carbon amendment for lowering soil nitrogen availability and favouring late-seral native species over early-seral weed species. 3. Carbon amendments resulted in significant increase in soil microbial biomass C and reduced soil nitrogen availability after 2 years. 4. Total vegetation cover was reduced by reducing soil nitrogen availability, but total species richness was not impacted. Cover of early-seral species decreased, and species richness and cover of late-seral species increased irrespective of nitrogen immobilization. However, after 4-6 years reducing soil nitrogen availability hampered the spread of moss under vascular vegetation. 5. Synthesis and applications. This study supports the efficacy of carbon amendment as a tool to immobilize available soil nitrogen in the upper soil layers. However, the desired impact on vegetation was not fully achieved despite application over several years. Nitrogen immobilization was most relevant to bryophytes, lacking deep root systems, which may explain the responsiveness of this group to N limitation. The different impact of N availability on the complex of early-seral, late-seral vascular species and that of the bryophyte layer provides opportunity for directing state transformations in arid grasslands. Bryophyte cover can be suppressed through carbon amendments in order to enhance the germination and establishment of grassland species. The advantage of the method is that it opens bryophyte cover gradually without disturbing the soil surface, possibly avoiding the establishment of invasive species. However, further studies are required for deeper insight.

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Section: Discussionmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Long‐term outcome of nitrogen immobilization to restore endemic sand grassland in Hungary

Török

Szitár

Halassy

et al. 2014

Journal of Applied Ecology

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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

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114

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Lichen ecophysiology in a changing climate

Stanton

Ormond

Koch

et al. 2023

American J of Botany

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Lichens are one of the most iconic and ubiquitous symbioses known, widely valued as indicators of environmental quality and, more recently, climate change. Our understanding of lichen responses to climate has greatly expanded in recent decades, but some biases and constraints have shaped our present knowledge. In this review we focus on lichen ecophysiology as a key to predicting responses to present and future climates, highlighting recent advances and remaining challenges. Lichen ecophysiology is best understood through complementary whole-thallus and within-thallus scales. Water content and form (vapor or liquid) are central to whole-thallus perspectives, making vapor pressure differential (VPD) a particularly informative environmental driver. Responses to water content are further modulated by photobiont physiology and wholethallus phenotype, providing clear links to a functional trait framework. However, this thallus-level perspective is incomplete without also considering within-thallus dynamics, such as changing proportions or even identities of symbionts in response to climate, nutrients, and other stressors. These changes provide pathways for acclimation, but their understanding is currently limited by large gaps in our understanding of carbon allocation and symbiont turnover in lichens. Lastly, the study of lichen physiology has mainly prioritized larger lichens at high latitudes, producing valuable insights but underrepresenting the range of lichenized lineages and ecologies. Key areas for future work include improving geographic and phylogenetic coverage, greater emphasis on VPD as a climatic factor, advances in the study of carbon allocation and symbiont turnover, and the incorporation of physiological theory and functional traits in our predictive models.

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Bromus tectorum litter alters photosynthetic characteristics of biological soil crusts from a semiarid shrubland

Cited by 31 publications

References 57 publications

Long‐term outcome of nitrogen immobilization to restore endemic sand grassland in Hungary

Long‐term outcome of nitrogen immobilization to restore endemic sand grassland in Hungary

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

Lichen ecophysiology in a changing climate

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