Talking SMAAC: A New Tool to Measure Soil Respiration and Microbial Activity

Gyawali, Ayush Joshi; Lester, Brandon J.; Stewart, Ryan D.

doi:10.3389/feart.2019.00138

Cited by 17 publications

(5 citation statements)

References 32 publications

(30 reference statements)

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“…The cost of most automatic soil respiration spectroscopic‐base devices may be prohibitive for most projects. Fortunately, relatively inexpensive tools have been developed [e.g., Joshi Gyawali et al (2019) or Sainju et al (2021)] and may be suitable for continuous measuring and monitoring of soil respiration at higher spatial and temporal resolution. We also suggest using fast respiration assays like the 24 hour CO 2 burst incubation (McGowen et al 2018) as cost‐effective alternatives.…”

Section: Discussionmentioning

confidence: 99%

Soil health indicators for monitoring forest ecological restoration: a critical review

Gatica‐Saavedra

Aburto

Rojas

et al. 2022

Restoration Ecology

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Forest restoration is considered among the most affordable and effective practices to address ecosystem and biodiversity loss and mitigate the impacts of human-induced global change. Soils are intrinsically complex systems that mediate and regulate multiple processes and functions vital for forest ecosystem restoration. Although monitoring soil attributes are critical for evaluating the success of forest restoration projects, research, and development of soil function indicators are still limited. Here, we have reviewed the most commonly reported soil indicators in forest restoration research and their recovery trajectory on a global scale. We also identified and discussed less frequently used indicators that have the potential for monitoring ecosystem recovery. We found that soil indicators have considerably increased in the literature. However, research is regionally concentrated, and a significant proportion of publications neither considered reference ecosystems (41%) nor provided basic information about soil types (<21%). The most reported indicator types were chemical (76%) (e.g., soil carbon, nitrogen, and pH). A significant proportion of the studies (46%) performed long-term evaluations (>15 years) of indicators. The majority of the indicators tended to resemble the levels of the reference ecosystem in the long term, with a few exceptions (e.g., water content and bulk density). We identified several less used but more integrative indicators with great potential for monitoring forest ecosystem recovery (e.g., aggregate stability, oxidizable carbon, soil respiration, and enzyme activity). Our results emphasize the need to effectively develop standardized soil health indicators to monitor ecosystem recovery under different conditions and expand their use in underrepresented regions.

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Section: Discussionmentioning

confidence: 99%

Soil health indicators for monitoring forest ecological restoration: a critical review

Gatica‐Saavedra

Aburto

Rojas

et al. 2022

Restoration Ecology

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“…Microbial growth in a morbidostat can also be monitored by measuring the release of metabolic carbon dioxide (CO 2 ). Many microorganisms emit CO 2 during their metabolic processes, and CO 2 has been used as an indicator of life-sustaining activities in a variety of studies [5] , [6] , [7] , [8] , [9] . The average CO 2 concentration in the atmosphere is about 400 ppm, but microbial cultures can produce exhaust with CO 2 concentrations of higher than 2000 ppm [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Using CO2 level monitoring to adjust the stress conditions of morbidostats

Bora

2024

Biotechnology Reports

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“…Microbial activity in the soil can be determined by respiration, dehydrogenase, and nitrogenase activity measurement. Soil respiration measurements are widely used to quantify carbon fluxes and ascertain soil biological properties related to soil microbial ecology and soil health [7]. Soil dehydrogenase activity (DHA) is considered a measure of overall soil microbial activity due to dehydrogenases occurring intracellularly in all living microbial cells and do not accumulate extracellularly in the soil, As part of the respiration pathways of soil microorganisms, dehydrogenases oxidize SOM by transferring protons and electrons from substrates to acceptors; hence, DHA may indicate soil potential to support biochemical processes necessary for soil fertility preservation [9].…”

Section: Introductionmentioning

confidence: 99%

Microbial activity of potential and actual acid sulphate soil from Kalimantan Island

Yuniarti

Surono

Susilowati

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Drainage on acid sulphate land causes a change in the type of acid sulfate (AS) soil, from the potential to actual due to pyrite oxidation. The alteration might cause changes in microbial composition and activity. The objective of the study was to compare the microbial activity of two types of acid sulphate (AS) soil, potential AS soil from South Kalimantan and actual AS soil from Central Kalimantan. The microbial activity of both soils was determined by measuring respiration, dehydrogenase, and nitrogenase activity. The presence of culturable soil rhizospheric microorganisms was determined by Total Plate Count methods and their nitrogen fixation function was determined by the ability of culturable rhizospheric soil bacteria to grow in semisolid nitrogen-free medium, as well as, nifH detection. The result of the research revealed that the respiration, dehydrogenase, and nitrogenase activity soil from potential (1.34 mg CO2.kg1 hour−1 and 1.75 nmol C2H4.g−1. hour−1) and actual AS soil (1.23 mg CO2.kg−1. hour−1 and 2.00 nmol C2H4.g−1.day−1) were relatively not different. However, the dehydrogenase activity of actual AS soil (6.29 μg TPF.g−1. hour−1) was higher than that of potential AS soils (3.32 μg TPF.g−1. hour−1). Similarly, the microbial abundance of both soils was not different and the abundance of bacteria was higher than that of fungi. The soils contained nifH genes. In both soils have been detected the presence of microbial abundance and functional microorganisms as a nitrogen fixer, a culturable phosphate solubilizer, or phytohormone producer. However, limiting factors of both soils, i.e., very acidic soil, low nutrient availability, and Al toxicity brought about the low microbial activity.

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Talking SMAAC: A New Tool to Measure Soil Respiration and Microbial Activity

Cited by 17 publications

References 32 publications

Soil health indicators for monitoring forest ecological restoration: a critical review

Soil health indicators for monitoring forest ecological restoration: a critical review

Using CO2 level monitoring to adjust the stress conditions of morbidostats

Microbial activity of potential and actual acid sulphate soil from Kalimantan Island

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