Microbial activity and functional diversity in Psamment soils in a forested coastal dune-swale system

Marinari, Sara; Carbone, Serena; Antisari, Livia Vittori; Grégo, S.; Vianello, Gilmo

doi:10.1016/j.geoderma.2011.12.023

Cited by 29 publications

(18 citation statements)

References 47 publications

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“…The C mb as a fraction of SOC above 2 % and more are generally observed in grassland soils. Under strong salinity situations Sardinha et al [5] recorded 0.5 % C mb as a fraction of SOC. The negative effect of salinity on C mb and BSR in different soils has been reported by Tripathi et al [7], Yuan et al [9], Tripathi et al [25], Shah and Shah [28] and Mavi and Marschner [30].…”

Section: Soil Microbial Activitymentioning

confidence: 98%

“…The effect of salinity under low soil pH on microbial activities in terms of soil microbial biomass (C mb ), basal soil respiration (BSR), metabolic quotient (qCO 2 ), enzyme activities-dehydrogenase, acid and alkaline phosphatase and urease is still poorly understood [4]. Such studies are also limited in salt water intrusion affected hydromorphic mineral soils [5]. Soil structural changes due to altered soil physical processes in salt affected soils affect water and air movement and available water capacity.…”

Section: Introductionmentioning

confidence: 99%

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Microbial and Enzyme Activities and Carbon Stock in Unique Coastal Acid Saline Soils of Goa

Mahajan

Manjunath

Latare

et al. 2015

Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci.

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The aim of the present investigation was to study the effects of salinity under low soil pH conditions on soil microbial and enzyme activities and to quantify soil organic carbon (SOC) stocks in coastal saline soils of Goa, India. Global positioning system based replicated soil samples collected from fifteen different locations showed characteristic variations in electrical conductivity (0.09-6.29 dS m -1 ), soil pH (4.11-6.57), exchangeable sodium (Na) (7.40-23.2 meq 100 g -1 ) and exchangeable sodium percentage (48.3-85.7 %). Exchangeable Na was the most dominant cation among all the cations analyzed at all the sites. The total SOC stock of the study sites varied significantly (p \ 0.05) and ranged from 4.27-24.3 Mg C ha -1 . The soil microbial activity measured in terms of basal soil respiration, soil microbial biomass carbon (C mb ), C mb as a fraction of SOC and enzyme activities related to dehydrogenase, phosphatase and urease showed a decline with increasing salinity levels. On the contrary, metabolic quotient increased with increasing salinity. The results of the study suggest that salinity under low soil pH has a depressive effect on the soil microbial and enzyme activity. Alleviation of the depressive effect of salinity on microbial activity needs to be addressed through suitable interventions and countermeasures for sustainable crop production in coastal acid saline soils of Goa.

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Section: Soil Microbial Activitymentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Microbial and Enzyme Activities and Carbon Stock in Unique Coastal Acid Saline Soils of Goa

Mahajan

Manjunath

Latare

et al. 2015

Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci.

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“…Bouten et al, 1992;Raat et al, 2002;Zehe et al, 2010; Figure 6)soil texture has been shown to be homogenous between these sites (Table I). All elements significantly differing between soils and the throughfall they receive have been found to affect change in SMC structure, including pH (Fierer and Jackson, 2006;Schimel and Schaeffer, 2012), CEC (Bundt et al, 2001;Grossman et al, 2010), Ca 2+ and Mg 2+ (Chagnon et al, 2001;Xu et al, 2007;Faoro et al, 2010), Na + and Cl - (Nelson and Mele, 2007;Marinari et al, 2012), and inorganic N speciation and concentration (Bengtsson et al, 2003). Reductions in water inputs, as well as alterations to throughfall solute concentrations because of enhanced capture of dry deposited ions and physiological activity have been previously reported for other epiphyte types (Veneklaas, 1990;Coxson, 1991;Cavelier et al, 1997;Hölscher et al, 2003;Oyarzún et al, 2004;Zimmermann et al, 2007;Umana and Wanek, 2010;Figure 5.…”

Section: Discussion: Throughfall As An Intermediary Between Canopy Anmentioning

confidence: 70%

“…sites gap 1 through gap 3 incrementally increase in pH), this may have implications for identifying environmentally sensitive bacterial clades as those that disappear or appear from the banding patterns along the mixing line. Significant shifts in environmental conditions for our study have been conceptualized in Figure , showing that these site‐specific bacterial community mixing lines may respond to differential meteoric water supply rates, throughfall sea salt aerosol concentrations, throughfall dissolved N‐species and concentrations, soil moisture, and soil pH levels – all of which have been identified as drivers of soil bacterial community composition (Bengtsson et al ., ; Fierer and Jackson, ; Nelson and Mele, ; Marinari et al ., ; Schimel and Schaeffer, ). It could also be the combination of these factors producing the bacterial mixing lines.…”

Section: Discussion: Throughfall As An Intermediary Between Canopy Anmentioning

confidence: 99%

Forest canopy structural controls over throughfall affect soil microbial community structure in an epiphyte‐laden maritime oak stand

et al. 2015

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Abstract. Identifying spatiotemporal influences on soil microbial community (SMC) structure is critical to our understanding of patterns in biogeochemical cycling and related ecological services (e.g., plant community structure, water quality, response to environmental change). Since forest canopy structure alters the spatiotemporal patterning of precipitation water and solute supplies to soils (via -throughfall‖), is it possible that changes in SMC structure could arise from modifications in canopy elements? Our study investigates this question by monitoring throughfall water and dissolved ion supply to soils beneath a continuum of canopy structure: from large gaps (0% cover), to bare Quercus virginiana Mill. (southern live oak) canopy (~50-70%), to heavy Tillandsia usneoides L. (Spanish moss) canopy (>90% cover). Throughfall water supply diminished with increasing canopy cover, yet increased washoff/leaching of Na + , Cl + , concentrations supplied to subcanopy soils. The mineral soil horizon (0-10 cm) sampled in triplicate from locations receiving throughfall water and solutes from canopy gaps, bare canopy, and T. usneoides-laden canopy significantly differed in soil chemistry parameters (pH, Ca 2+ , Mg 2+ , CEC). Polymerase Chain Reaction-Denaturant Gradient Gel Electrophoresis (PCR-DGGE) banding patterns beneath similar canopy covers (experiencing similar throughfall dynamics) also produced high similarities per ANalyses Of SIMilarity (ANO-SIM), and clustered together when analyzed by Nonmetric Multidimensional Scaling (NMDS). These results suggest that modifications of forest canopy structures are capable of affecting mineral-soil horizon SMC structure via throughfall when canopies' biomass distribution is highly heterogeneous. As SMC structure, in many instances, relates to functional diversity, we suggest that future research seek to identify functional diversity shifts (e.g., nitrogen transformation) in response to canopy structural alterations of throughfall water/solute concentration.

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“…Примеры использования показателя ферментативной активности (ФА) почв отражены во многих публикациях. Так, в работе S. Marinari et al [6] ФА является одним из эффективных показателей изменения биохимических свойств пойменных почв при повторяющихся вторжениях соленой озерной воды в районе Равенны (Италия). Есть примеры использования этого показателя для оценки воздействия тяжелых металлов на аллювиальные почвы долины р. Висла (Польша) [7].…”

Section: Introductionunclassified

A comparative assessment of the biological activity of soils in the Selenga river upper delta according to the content of enzymes

Макушкин¹

2018

Tomsk State University Journal of Biology

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Сравнительная оценка биологической активности почв верхней дельты р. Селенга по содержанию ферментов Работа выполнена при финансовой поддержке проекта 5.1.1 «Фундаментальные основы управления биологическими ресурсами» специализированных отделений РАН.

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Microbial activity and functional diversity in Psamment soils in a forested coastal dune-swale system

Cited by 29 publications

References 47 publications

Microbial and Enzyme Activities and Carbon Stock in Unique Coastal Acid Saline Soils of Goa

Microbial and Enzyme Activities and Carbon Stock in Unique Coastal Acid Saline Soils of Goa

Forest canopy structural controls over throughfall affect soil microbial community structure in an epiphyte‐laden maritime oak stand

A comparative assessment of the biological activity of soils in the Selenga river upper delta according to the content of enzymes

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