1,789 results match your criteria sequestration measured

The environmental and economic trade-offs of using composted or stockpiled manure as partial substitute of synthetic fertilizer.

J Environ Qual 2021 Jun 11. Epub 2021 Jun 11.

Centre for Agriculture and the Bioeconomy, Queensland University of Technology, 2 George St, Brisbane, QLD, 4000, Australia.

Manure generated from livestock production could represent an important source of plant nutrients in substitution of synthetic fertilizer. To evaluate the sustainability of partially substituting synthetic fertilizer with soil organic amendments (OA) in horticulture, an economic and greenhouse gas (GHG) budget was developed. The boundary for analysis included manure processing (stockpiling versus composting), transport and spreading of manure and compost (feedlot and chicken) in intensively cultivated horticultural fields. Read More

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Prenatal alcohol-related alterations in maternal, placental, neonatal, and infant iron homeostasis.

Am J Clin Nutr 2021 Jun 5. Epub 2021 Jun 5.

Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, USA.

Background: Prenatal alcohol exposure (PAE) is associated with postnatal iron deficiency (ID), which has been shown to exacerbate deficits in growth, cognition, and behavior seen in fetal alcohol spectrum disorders. However, the mechanisms underlying PAE-related ID remain unknown.

Objectives: We aimed to examine biochemical measures of iron homeostasis in the mother, placenta, neonate, and 6. Read More

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New pedotransfer approaches to predict soil bulk density using WoSIS soil data and environmental covariates in Mediterranean agro-ecosystems.

Sci Total Environ 2021 Aug 19;780:146609. Epub 2021 Mar 19.

Department of Agricultural and Environmental Science, University of Milan, Via Celoria 2, Milan, Italy.

For the estimation of the soil organic carbon stocks, bulk density (BD) is a fundamental parameter but measured data are usually not available especially when dealing with legacy soil data. It is possible to estimate BD by applying pedotransfer function (PTF). We applied different estimation methods with the aim to define a suitable PTF for BD of arable land for the Mediterranean Basin, which has peculiar climate features that may influence the soil carbon sequestration. Read More

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A novel approach for estimation of aboveground biomass of a carbon-rich mangrove site in India.

J Environ Manage 2021 Aug 21;292:112816. Epub 2021 May 21.

Department of Geography, University of Georgia, USA.

Mangroves can play a crucial part in climate change mitigation policies due to their high carbon-storing capacity. However, the carbon sequestration potential of Indian mangroves generally remained unexplored to date. In this study, multi-temporal Sentinel-1 and 2 data-derived variables were used to estimate the AGB of a tropical carbon-rich mangrove forest of India. Read More

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Chronic atmospheric reactive N deposition has breached the N sink capacity of a northern ombrotrophic peatbog increasing the gaseous and fluvial N losses.

Sci Total Environ 2021 Sep 15;787:147552. Epub 2021 May 15.

Department of Geography, Earth and Environmental Science, University of Birmingham, UK.

Peatlands play an important role in modulating the climate, mainly through sequestration of carbon dioxide into peat carbon, which depends on the availability of reactive nitrogen (Nr) to mosses. Atmospheric Nr deposition in the UK has been above the critical load for functional and structural changes to peatland mosses, thus threatening to accelerate their succession by vascular plants and increasing the possibility of Nr export to downstream ecosystems. The N balance of peatlands has received comparatively little attention, mainly due to the difficulty in measuring gaseous N losses as well as the Nr inputs due to biological nitrogen fixation (BNF). Read More

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September 2021

Endothelial glycocalyx during early reperfusion in patients undergoing cardiac surgery.

PLoS One 2021 17;16(5):e0251747. Epub 2021 May 17.

Division of Anaesthesiology, Department of Anaesthesiology Intensive Care and Pain Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.

Background: Experimental cardiac ischemia-reperfusion injury causes degradation of the glycocalyx and coronary washout of its components syndecan-1 and heparan sulfate. Systemic elevation of syndecan-1 and heparan sulfate is well described in cardiac surgery. Still, the events during immediate reperfusion after aortic declamping are unknown both in the systemic and in the coronary circulation. Read More

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Emission factors of environmentally persistent free radicals in PM from rural residential solid fuels combusted in a traditional stove.

Sci Total Environ 2021 Jun 6;773:145151. Epub 2021 Feb 6.

Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, United States.

Emission factors (EFs) are crucial for establishing emission inventory and subsequent health risk assessment of pollutants. However, the EFs of environmentally persistent free radicals (EPFRs) in PM have not been well investigated. We measured EPFRs in PM from burning of different solid fuels in a traditional stove widely used in rural China and calculated the EFs of EPFRs (EF). Read More

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Carbon stocks of homestead forests have a mitigation potential to climate change in Bangladesh.

Sci Rep 2021 Apr 29;11(1):9254. Epub 2021 Apr 29.

Institute of Forestry and Environmental Sciences, University of Chittagong, Chittagong, 4331, Bangladesh.

A total of 176 homestead forests at three altitudes in the Chittagong Hill Tracts, Bangladesh were randomly surveyed to estimate carbon (C) stocks and how stand structure affects the biomass C. All woody vegetations were measured, and litter and soil (0-30 cm depth) were sampled. The tree biomass C stock in the top two altitude forests was up to 37-48% higher than in low altitude, owing to significantly higher tree density and species diversity. Read More

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Effects of biochar aging in the soil on its mechanical property and performance for soil CO and NO emissions.

Sci Total Environ 2021 Aug 29;782:146824. Epub 2021 Mar 29.

College of Environmental Resource Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang 310058, China. Electronic address:

Biochar application into the soils has been reported to have huge carbon sequestration potential, although it remains unclear that how the biochar aging in the soil affects its mechanical properties and soil CO and NO emissions. This work assessed the impact of soil biochar aging on its physicochemical properties, microbiota community in the biochar, and soil CO and NO emissions. Various characterizations (e. Read More

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Combined effect of citrulline and lactoserum on amino acid availability in aged rats.

Nutrition 2021 Jul-Aug;87-88:111196. Epub 2021 Feb 11.

Faculty of Pharmacy, Paris University, Paris, France; Clinical Chemistry Department, Hôpital Cochin, Asssistance Publique - Hôpitaux de Paris, Paris, France. Electronic address:

Objective: Age-associated sarcopenia is due to anabolic resistance to feeding. Muscle protein synthesis is improved by fast proteins (e.g. Read More

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February 2021

Evaluating nature-based solutions for climate mitigation and conservation requires comprehensive carbon accounting.

Sci Total Environ 2021 May 20;769:144341. Epub 2021 Jan 20.

Griffith Climate Change Response Program, Griffith University, Queensland 4222, Australia.

Nature-based solutions (NbS) can address climate change, biodiversity loss, human well-being and their interactions in an integrated way. A major barrier to achieving this is the lack of comprehensiveness in current carbon accounting which has focused on flows rather than stocks of carbon and led to perverse outcomes. We propose a new comprehensive approach to carbon accounting based on the whole carbon cycle, covering both stocks and flows, and linking changes due to human activities with responses in the biosphere and atmosphere. Read More

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Small phytoplankton contribute greatly to CO-fixation after the diatom bloom in the Southern Ocean.

ISME J 2021 Mar 12. Epub 2021 Mar 12.

Ecologie Systématique Evolution, Université Paris-Saclay, Centre National de la Recherche Scientifique - CNRS, AgroParisTech, Orsay, France.

Phytoplankton is composed of a broad-sized spectrum of phylogenetically diverse microorganisms. Assessing CO-fixation intra- and inter-group variability is crucial in understanding how the carbon pump functions, as each group of phytoplankton may be characterized by diverse efficiencies in carbon fixation and export to the deep ocean. We measured the CO-fixation of different groups of phytoplankton at the single-cell level around the naturally iron-fertilized Kerguelen plateau (Southern Ocean), known for intense diatoms blooms suspected to enhance CO sequestration. Read More

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Perioral Aerosol Sequestration Suction Device Effectively Reduces Biological Cross-Contamination in Dental Procedures.

Eur J Dent 2021 May 12;15(2):340-346. Epub 2021 Mar 12.

Human Anatomy and Embryology Unit, Experimental Pathology and Therapeutics Department, Faculty of Medicine and Health Sciences, Health University of Barcelona campus, L'Hospitalet 08907, Barcelona, Spain.

Objective:  The infection risk during dental procedures is a common concern for dental professionals which has increased due to coronavirus (severe acute respiratory syndrome coronavirus 2) pandemic. The development of devices to specifically mitigate cross-contamination by droplet/splatter is crucial to stop infection transmission. The objective of this study is to assess the effectiveness of a perioral suction device (Oral BioFilter, OBF) to reduce biological contamination spread during dental procedures. Read More

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Do dissipation and transformation of γ-HCH and p,p'-DDT in soil respond to a proxy for climate change? Insights from a field study on the eastern Tibetan Plateau.

Environ Pollut 2021 Jun 25;278:116824. Epub 2021 Feb 25.

State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China; School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China. Electronic address:

While the influence of climate change on the fate of persistent organic pollutants (POPs) is becoming a topic of global concern, it has yet to be demonstrated how POPs and their transformation products in soil respond to a changing climate at the local scale. We conducted a year-long field experiment with spiked soils to investigate the impact of climate on the dissipation of γ-hexachlorocyclohexane (γ-HCH) and p,p'-dichlorodiphenyltrichloroethane (p,p'-DDT) as well as the formation of their products. Four sites along an elevational gradient on the eastern Tibetan Plateau were selected to represent four scenarios ranging from a dry and cold to a warm and humid climate. Read More

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Dramatic increase in water use efficiency with cumulative forest disturbance at the large forested watershed scale.

Carbon Balance Manag 2021 Mar 1;16(1). Epub 2021 Mar 1.

University of British Columbia, 1177 Research Road, Kelowna, BC, V1V 1V7, Canada.

Background: Forest disturbance induced changes in the coupling of forest carbon and water have important implications for ecosystem functioning and sustainable forest management. However, this is rarely investigated at the large watershed scale with cumulative forest disturbance. We used a combination of techniques including modeling, statistical analysis, and machine learning to investigate the effects of cumulative forest disturbance on water use efficiency (WUE, a proxy for carbon and water coupling) in the 19,200 km Chilcotin watershed situated in the central interior of British Columbia, Canada. Read More

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Soil carbon accumulation with increasing temperature under both managed and natural vegetation restoration in calcareous soils.

Sci Total Environ 2021 May 22;767:145298. Epub 2021 Jan 22.

Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; Huanjiang Observation and Research Station for Karst Ecosystems, Huanjiang 547100, China. Electronic address:

Vegetation restoration has been proposed as an effective strategy for increasing soil organic carbon (SOC) sequestration. However, the responses of SOC to managed and natural vegetation restoration strategies at a large scale are poorly understood due to the varying SOC components and changing climatic conditions. Here, we measured bulk SOC, particulate organic carbon (POC), and mineral-associated organic carbon (MOC) after 15 years of vegetation restoration along an elevation gradient with a corresponding temperature gradient in the calcareous soils of karst region, Southwest China. Read More

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Sustained productivity and respiration of degrading kelp detritus in the shallow benthos: Detached or broken, but not dead.

Mar Environ Res 2021 Apr 9;166:105277. Epub 2021 Feb 9.

Sorbonne Université, CNRS, UMR 7144 AD2M, Station Biologique de Roscoff, Place Georges Teissier, F-29680, Roscoff, France.

Temperate kelp forests contribute significantly to marine primary productivity and fuel many benthic and pelagic food chains. A large proportion of biomass is exported from kelp forests as detritus into recipient marine ecosystems, potentially contributing to Blue Carbon sequestration. The degradation of this organic material is slow and recent research has revealed the preservation of photosynthetic functions over time. Read More

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Impacts of pine plantations on carbon stocks of páramo sites in southern Ecuador.

Carbon Balance Manag 2021 Feb 9;16(1). Epub 2021 Feb 9.

Department of Ecology and Ecosystem Management, Technical University of Munich, Munich, Germany.

Background: Since the 1990's, afforestation programs in the páramo have been implemented to offset carbon emissions through carbon sequestration, mainly using pine plantations. However, several studies have indicated that after the establishment of pine plantations in grasslands, there is an alteration of carbon pools including a decrease of the soil organic carbon (SOC) pool. The aim of this study is to investigate the impact of the establishment of pine plantations on the carbon stocks in different altitudes of the páramo ecosystem of South Ecuador. Read More

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February 2021

Stabilization of dissolvable biochar by soil minerals: Release reduction and organo-mineral complexes formation.

J Hazard Mater 2021 06 23;412:125213. Epub 2021 Jan 23.

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center of Solid Waste Treatment and Recycling, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China. Electronic address:

Biochar has two existing forms in the moist soil environment, free dissolvable biochar (particle size < 0.45 μm) and undissolvable particles (particle size > 0.45 μm). Read More

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[Effects of planting broadleaf trees and Moso bamboo on soil carbon mineralization and microbial community structure].

Ying Yong Sheng Tai Xue Bao 2021 Jan;32(1):82-92

Administration Bureau of Dapanshan National Nature Reserve, Pan'an 322300, Zhejiang, China.

We conducted a pot experiment to investigate the effects of planting broadleaf tree species (i.e., , , and ) and Moso bamboo () on soil carbon mineralization and microbial community structure. Read More

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January 2021

Comprehensive Analysis of Transcript and Protein Relative Abundance During Blood Stages of Infection.

J Proteome Res 2021 02 21;20(2):1206-1216. Epub 2021 Jan 21.

Université de Paris UMR261-MERIT Faculté de Pharmacie, 4 Ave. de l'observatoire, Île-de-France, FR 75006 Paris, France.

is the main causative agent of human malaria. During the intraerythrocytic development cycle, the morphology changes dramatically from circulating young rings to sequestered mature trophozoites and schizonts. Sequestered forms contribute to the pathophysiology of severe malaria as the infected erythrocytes obstruct the microvascular flow in deep organs and induce local inflammation. Read More

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February 2021

Semimechanistic Pharmacokinetic and Pharmacodynamic Modeling of Piperaquine in a Volunteer Infection Study with Plasmodium falciparum Blood-Stage Malaria.

Antimicrob Agents Chemother 2021 03 18;65(4). Epub 2021 Mar 18.

Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand

Dihydroartemisinin-piperaquine is a recommended first-line artemisinin combination therapy for malaria. Piperaquine is also under consideration for other antimalarial combination therapies. The aim of this study was to develop a pharmacokinetic-pharmacodynamic model that might be useful when optimizing the use of piperaquine in new antimalarial combination therapies. Read More

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Influence of landscape management practices on urban greenhouse gas budgets.

Carbon Balance Manag 2021 Jan 7;16(1). Epub 2021 Jan 7.

Department of Earth and Environment, Boston University, Boston, MA, 02215, USA.

Background: With a lack of United States federal policy to address climate change, cities, the private sector, and universities have shouldered much of the work to reduce carbon dioxide (CO) and other greenhouse gas emissions. This study aims to determine how landcover characteristics influence the amount of carbon (C) sequestered and respired via biological processes, evaluating the role of land management on the overall C budget of an urban university. Boston University published a comprehensive Climate Action Plan in 2017 with the goal of achieving C neutrality by 2040. Read More

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January 2021

Factors Influencing Carbon Stocks and Accumulation Rates in Eelgrass Meadows Across New England, USA.

Estuaries Coast 2020 Dec;43(8):2076-2091

Massachusetts Coastal Zone Management, Boston, MA, USA.

Increasing the protection of coastal vegetated ecosystems has been suggested as one strategy to compensate for increasing carbon dioxide (CO) in the atmosphere as the capacity of these habitats to sequester and store carbon exceeds that of terrestrial habitats. Seagrasses are a group of foundation species that grow in shallow coastal and estuarine systems and have an exceptional ability to sequester and store large quantities of carbon in biomass and, particularly, in sediments. However, carbon stocks (C stocks) and carbon accumulation rates (C accumulation) in seagrass meadows are highly variable both spatially and temporally, making it difficult to extrapolate this strategy to areas where information is lacking. Read More

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December 2020

Contribution of soil microbial necromass to SOC stocks during vegetation recovery in a subtropical karst ecosystem.

Sci Total Environ 2021 Mar 4;761:143945. Epub 2020 Dec 4.

Geography, College of Life and Environmental Sciences, University of Exeter, Rennes Drive, Exeter EX4 4RJ, UK.

Carbon sequestration is a key soil function, and an increase in soil organic carbon (SOC) is an indicator of ecosystem recovery because it underpins other ecosystem services by acting as a substrate for the soil microbial community. The soil microbial community constitutes the active pool of SOC, and its necromass (microbial residue carbon, MRC) contributes strongly to the stable SOC pool. Therefore, we propose that the potential for restoration of degraded karst ecosystems lies in the abundance of soil microbial community and the persistence of its necromass, and may be measured by changes in its contribution to the active and stable SOC pools during recovery. Read More

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Carbon dioxide dynamics in a residential lawn of a tropical city.

J Environ Manage 2021 Feb 24;280:111752. Epub 2020 Dec 24.

Department of Plant and Soil Sciences, University of Delaware, Newark, DE, USA.

Turfgrass is an important component of the urban landscape frequently considered as an alternative land cover to offset anthropogenic CO emissions. However, quantitative information of the potential to directly remove CO from the atmosphere by turfgrass systems is lacking, especially in the tropics. Most assessments have considered the carbon accumulated by grass shoots and soil, but not the release of CO to the atmosphere by soil respiration (i. Read More

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February 2021

Carbon storage and sediment trapping by Egeria densa Planch., a globally invasive, freshwater macrophyte.

Sci Total Environ 2021 Feb 2;755(Pt 1):142602. Epub 2020 Oct 2.

U.S. Geological Survey, Pacific Coastal and Marine Science Center, 2885 Mission St., Santa Cruz, CA 95060, USA. Electronic address:

Invasive plants have long been recognized for altering ecosystem properties, but their long-term impacts on ecosystem processes remain largely unknown. In this study, we determined the impact of Egeria densa Planch, a globally invasive freshwater macrophyte, on sedimentation processes in a large tidal freshwater region. We measured carbon accumulation (CARs) and inorganic sedimentation rates in submerged aquatic vegetation SAV dominated by E. Read More

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February 2021

Topsoil organic matter build-up in glacier forelands around the world.

Glob Chang Biol 2021 04 16;27(8):1662-1677. Epub 2021 Jan 16.

Univ. Grenoble Alpes, Univ. Savoie Mont-Blanc, CNRS, LECA, Grenoble, France.

Since the last glacial maximum, soil formation related to ice-cover shrinkage has been one major sink of carbon accumulating as soil organic matter (SOM), a phenomenon accelerated by the ongoing global warming. In recently deglacierized forelands, processes of SOM accumulation, including those that control carbon and nitrogen sequestration rates and biogeochemical stability of newly sequestered carbon, remain poorly understood. Here, we investigate the build-up of SOM during the initial stages (up to 410 years) of topsoil development in 10 glacier forelands distributed on four continents. Read More

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Three-Dimensional Bioprinted Hyaluronic Acid Hydrogel Test Beds for Assessing Neural Cell Responses to Competitive Growth Stimuli.

ACS Biomater Sci Eng 2020 12 1;6(12):6819-6830. Epub 2020 Dec 1.

J. Crayton Pruitt Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States.

Hyaluronic acid (HA) is an abundant extracellular matrix (ECM) component in soft tissues throughout the body and has found wide adoption in tissue engineering. This study focuses on the optimization of methacrylated HA (MeHA) for three-dimensional (3D) bioprinting to create test beds that incorporate regeneration-promoting growth factors in neural repair processes. To evaluate MeHA as a potential bioink, rheological studies were performed with PC-12 cells to demonstrate shear thinning properties maintained when printing with and without cells. Read More

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December 2020

[Net ecosystem carbon exchange and its affecting factors in a deciduous broad-leaved forest in Songshan, Beijing, China].

Ying Yong Sheng Tai Xue Bao 2020 Nov;31(11):3621-3630

School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China.

Forests play an important role in terrestrial carbon cycles. The mechanism underlying carbon balance in temperate deciduous broad-leaved forests is not clear. In this study, net ecosystem exchange (NEE) and environmental factors, including air temperature (), soil temperature (), photosynthetically active radiation (PAR), vapor pressure deficit (VPD), soil water content (SWC) and precipitation () were continually measured using eddy covariance techniques in 2019 in a deciduous broad-leaved forest in Songshan, Beijing. Read More

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November 2020