Woodchip and biochar amendments differentially influence microbial responses, but do not enhance plant recovery in disturbed semiarid soils

2020 ◽  
Vol 28 (S4) ◽  
Author(s):  
Noelle J. Espinosa ◽  
David J. P. Moore ◽  
Craig Rasmussen ◽  
Jeffrey S. Fehmi ◽  
Rachel E. Gallery
Keyword(s):  
Plant Recovery ◽  
Semiarid Soils ◽  
Microbial Responses

scholarly journals Grazing exclusion regulates bacterial community in highly degraded semiarid soils from the Brazilian Caatinga biome

2021 ◽  
Author(s):  
Arthur Prudêncio de Araujo Pereira ◽  
Lara Andrade Lucena Lima ◽  
Walderly Melgaço Bezerra ◽  
Mirella Leite Pereira ◽  
Leonardo Ribeiro Oliveira Normando ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Grazing Exclusion ◽  
Caatinga Biome ◽  
Semiarid Soils

scholarly journals Soil age and soil organic carbon content shape biochemical responses to multiple freeze–thaw events in soils along a postmining agricultural chronosequence

2021 ◽  
Author(s):  
Christoph Rosinger ◽  
Michael Bonkowski
Keyword(s):  
Microbial Biomass ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Content ◽  
Organic Carbon Content ◽  
Freeze Thaw ◽  
Biochemical Responses ◽  
Microbial Responses ◽  
Soil Age ◽  
Carbon Losses

AbstractFreeze–thaw (FT) events exert a great physiological stress on the soil microbial community and thus significantly impact soil biogeochemical processes. Studies often show ambiguous and contradicting results, because a multitude of environmental factors affect biogeochemical responses to FT. Thus, a better understanding of the factors driving and regulating microbial responses to FT events is required. Soil chronosequences allow more focused comparisons among soils with initially similar start conditions. We therefore exposed four soils with contrasting organic carbon contents and opposing soil age (i.e., years after restoration) from a postmining agricultural chronosequence to three consecutive FT events and evaluated soil biochgeoemical responses after thawing. The major microbial biomass carbon losses occurred after the first FT event, while microbial biomass N decreased more steadily with subsequent FT cycles. This led to an immediate and lasting decoupling of microbial biomass carbon:nitrogen stoichiometry. After the first FT event, basal respiration and the metabolic quotient (i.e., respiration per microbial biomass unit) were above pre-freezing values and thereafter decreased with subsequent FT cycles, demonstrating initially high dissimilatory carbon losses and less and less microbial metabolic activity with each iterative FT cycle. As a consequence, dissolved organic carbon and total dissolved nitrogen increased in soil solution after the first FT event, while a substantial part of the liberated nitrogen was likely lost through gaseous emissions. Overall, high-carbon soils were more vulnerable to microbial biomass losses than low-carbon soils. Surprisingly, soil age explained more variation in soil chemical and microbial responses than soil organic carbon content. Further studies are needed to dissect the factors associated with soil age and its influence on soil biochemical responses to FT events.

scholarly journals Editorial: Microbial Responses to Environmental Changes

2015 ◽  
Vol 6 ◽  
Author(s):  
Jürg B. Logue ◽  
Stuart E. G. Findlay ◽  
Jérôme Comte
Keyword(s):  
Environmental Changes ◽  
Microbial Responses

THE EFFECTS OF SOIL PROPERTIES ON THE DIFFERENTIAL PHOSPHATE SORPTION BY SEMIARID SOILS FROM NORTHEAST BRAZIL

Soil Science ◽  
1994 ◽  
Vol 157 (1) ◽  
pp. 36-45 ◽  
Author(s):  
J. O. AGBENIN ◽  
H. TIESSEN
Keyword(s):  
Soil Properties ◽  
Northeast Brazil ◽  
Phosphate Sorption ◽  
Semiarid Soils

Rapid understory plant recovery following forest floor protection on temporary drilling pads

2017 ◽  
Vol 26 (1) ◽  
pp. 48-55 ◽  
Author(s):  
Caren E. Jones ◽  
Sascha Bachmann ◽  
Victor J. Lieffers ◽  
Simon M. Landhäusser
Keyword(s):  
Forest Floor ◽  
Plant Recovery ◽  
Understory Plant

Mycorrhizal type determines root–microbial responses to nitrogen fertilization and recovery

2021 ◽  
Author(s):  
Joseph E. Carrara ◽  
Ivan J. Fernandez ◽  
Edward R. Brzostek
Keyword(s):  
Nitrogen Fertilization ◽  
Microbial Responses

Commonwealth of Soil Health: How Do Earthworms Modify the Soil Microbial Responses to CeO2 Nanoparticles?

2021 ◽  
Author(s):  
Wenxing Li ◽  
Peihua Zhang ◽  
Hao Qiu ◽  
Cornelis A. M. Van Gestel ◽  
Willie J. G. M. Peijnenburg ◽  
...  
Keyword(s):  
Soil Health ◽  
Ceo2 Nanoparticles ◽  
Soil Microbial ◽  
Microbial Responses
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