Wetland soils are an important component of the Global Carbon Cycle because they store about 20–25% of the terrestrial soil organic carbon (SOC). Wetlands occupy about 6% of the global land surface and any change in their use or management has potentially dramatic consequences on greenhouse gases emissions. However, the capacity of wetland soils to store carbon (C) differs from place to place due to reasons still not well understood. The objective of this review was to evaluate the global...
Topics: Organic matter decomposition, Redoxymorphic features
Mendeley Climate Change Library
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123
Jul 6, 2019
07/19
by
Amanda M. Tadini; Gustavo Nicolodelli; Bruno S. Marangoni; Stéphane Mounier; Célia R. Montes; Débora M.B.P. Milori
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Soil organic matter (SOM) plays an important role in environmental sustainability, since it is involved in carbon and nutrient cycling. Consequently, it is a key factor to consider in studies concerning global climate change and agronomy. Among the main components of SOM are humic substances (HS), which are divided, according to their solubility, into humic acid (HA), fulvic acid (FA), and humin (HU) fractions. Study of the chemical properties of this organic matter is important for...
Topics: Amazon, FAAS, LIBS, Organic matter
Little is known about how elevated atmospheric [CO2] will impact the dynamics of soil organic matter (SOM) in arid ecosystems. Evans et al. (2014) reported greater ecosystem carbon (C) and nitrogen (N) concentrations following 10 years exposure to elevated atmospheric [CO2] at the Nevada Desert Free-Air Carbon dioxide Enrichment (FACE) Facility (NDFF). In this study, we investigated potential mechanisms of SOC and total N accumulation and potential SOM stabilization using high resolution mass...
Topics: Mass spectrometry, Soil organic matter
Mendeley Climate Change Library
50
50
Jul 6, 2019
07/19
by
Renisson Neponuceno de Araújo Filho; Maria Betânia Galvão dos Santos Freire; Bradford Paul Wilcox; Jason Brossard West; Fernando José Freire; Flávio Adriano Marques
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Caatinga forests occupy an area of around one million km2 in the semiarid region of northeast Brazil. These landscapes are undergoing rapid change because of accelerated deforestation for cultivation and firewood. The capacity of Caatinga forests to regenerate after clearing determines the magnitude of the carbon (C) sink in the soil, and thus is fundamental information for developing management policies for long-term sustainability. The objective of this study was to investigate C stocks and...
Topics: Degradation, Organic matter, Semiarid forests, Sustainability
7
7.0
Jun 24, 2022
06/22
by
Jean-François Ponge
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In order to fractionate the soil organic matter into its different compounds, it is necessary to previously break completely the structural units. Physical methods are generally of a limited effect when applied on strongly aggregated soils; chemical ones need too complex operations. We investigate in this work a biological method formely used by microbiologists to obtain a bacterial desorption. Hydrolases or antibiotics are mixed together with soil samples. In both cases, the cements of...
Topics: antibiotics, disaggregation, enzymes, organic matter, soil
Understanding the mechanisms underlying the availability of phosphorus (P) is important for improving soil productivity Psammentic Paleudults. This research aimed to determine the mechanism for increasing phosphorus availability due to the application of various organic matters and incubation period in the Psammentic Paleudults soil from Labuhan Batu Selatan District, Sumatera Utara Province. This research was conducted at the Research Laboratory of Faculty of Agriculture, Universitas Sumatera...
Topics: phosphorus, organic matter, incubation, Psammentic Paleudults.
— In this note, our study was carried out by physico-chemical monitoring in terms of organic matter. The mean objective is to evaluate the performance of the Skhirat wastewater treatment plant based on the ratios COD/BOD and BOD/COD in order to know the degree of biodegradability and to make the decision about the treatment model to choose. In fact, the performances acquired in terms of COD and BOD are respectively of the order of 87.26% and 88.35%; what is significant downstream of this...
Topics: Wastewaters, Organic matter, biodegradability, performance, Skhirat, Morocco.
— Soil natural carbon is the base for soil richness. SOC is the piece of common carbon cycle, which releases supplements for plant development, helps for auxiliary, organic and physical soundness of the soil and for the most part goes about as a cradle against hurtful substances. Soil natural carbon levels are affected by soil sustenance, atmosphere, cultivating techniques, temperature, precipitation, arrive administration, and soil compose. SOC includes around 5% of mass of upper soil layer,...
Topics: soil organic matter, global warming, climate change
Wastewater-contaminated soil and groundwater is generally noticed in many residential and industrial districts in various countries in the world. In Arar’s city, underground permeable septic tanks have been used to collect domestic wastewater from about 90% of residential buildings. Wastewater, natural soil and polluted soil samples were taken from five districts. A series of chemical analysis was carried out for the obtained samples. Organic, chemical and elemental compositions of wastewater...
Topics: Contamination, Ground Soil, Groundwater, Organic Matter, Wastewater
Mendeley Climate Change Library
41
41
Jul 6, 2019
07/19
by
Anya M. Hopple; Laurel Pfeifer-Meister; Cassandra A. Zalman; Jason K. Keller; Malak M. Tfaily; Rachel M. Wilson; Jeffrey P. Chanton; Scott D. Bridgham
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Solid-phase soil organic matter is the largest carbon (C)pool in peatlands and, as such, has long been assumed to be the primary substrate driving anaerobic respiration in these systems. However, radiocarbon data from previous field samples suggest that dissolved organic matter (DOM)plays a key, and often dominant, role in fueling heterotrophic respiration across a variety of peatlands. In this study, we manipulated available C sources under laboratory conditions to empirically determine the...
Topics: Anaerobic respiration, Dissolved organic matter, Methanogenesis, Peatland
Wastewater-contaminated soil and groundwater is generally noticed in many residential and industrial districts in various countries in the world. In Arar’s city, underground permeable septic tanks have been used to collect domestic wastewater from about 90% of residential buildings. Wastewater, natural soil and polluted soil samples were taken from five districts. A series of chemical analysis was carried out for the obtained samples. Organic, chemical and elemental compositions of wastewater...
Topics: Contamination, Ground Soil, Groundwater, Organic Matter, Wastewater
Viticulture, particularly in the production of viniferous varieties, is one of the most present crops in the State of Rio Grande do Sul. Soil indicators can be highlighted attributes linked to organic carbon, which have often been used, to assess soil quality. The objectives here were: a) to evaluate and compare soil quality characteristics of vineyards in the conventional and biodynamic cultivation system of chardonnay vinifers, together with areas of native forest, in the localities where the...
Topics: viticulture, organic matter, Natural forest, management, soil.
The diffuse field of marine analytical organic chemistry is systematically analyzed to select schemes for measuring the trace amounts of dissolved organic compounds which can be adopted as standard, rapid, routine tools to advance the oceanographic understanding of this important aspect of the ocean. The many methods considered for measuring dissolved organic compounds in seawater have been systematically reduced to three systems that are potentially routine and rapid for shipboard work. These...
Topics: Oceanography, Systems Analysis, Methods, Dissolved Organic matter, Measurement
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623
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One of the most versatile and remunerative techniques for handling biodegradable solid wastes is composting. The areca nut waste Composing was carried out using 8 kg of raw materials in a composting pit of 0.5m width, 0.50 m length and 1 m height. The areca nut waste substrates arranged layer by layer and inoculated with the microbial inoculums of ligno cellulolytic organism at the rate of 5 kg per ton of substrate. Arecanut waste inoculated Phanerochaete chrysosporium, Pleurotous sajarcaju...
Topics: Composting, Lignin, Organic Matter, Inoculums, Arecanut Waste, Biodegradation
Eight bacterial strains were isolated from collagen layer of decaying skin sample. Three isolates exhibited the prominent zones of clearance on skim milk agar medium at pH 9.5. These isolates were then characterized and identified. One of the haloalkalophilic isolates belonged to the genus Bacillus . Maximum enzyme activity (228.29 ± 1.89 PU/ ml) was found at pH 9 and temperature 37°C in the strain which is designated as Bacillus sp . JSGT . Basic properties such as effects of different...
Topics: Alkaliphiles Bacillus species, Alkaline protease, Decaying organic matter
The production and decomposition of litter in mangroves plays a significant role in the nutrient and organic carbon cycles. These can be highly variable both spatially and temporally as a result of numerous factors including tidal range, forest type, abundance and type of herbivorous fauna, temperature, and microbial activity. Mangroves also play an important role in blue carbon sequestration, with their status as carbon sinks crucial in mitigating against greenhouse gas-induced climate change....
Topics: Leaching, Macrofauna, Mangroves, Microbial activity, Organic matter decomposition
Mendeley Climate Change Library
30
30
Jul 6, 2019
07/19
by
Markku Yli-Halla; Karoliina Rimhanen; Johanna Muurinen; Janne Kaseva; Helena Kahiluoto
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Soil carbon (C) represents the largest terrestrial carbon stock and is key for soil productivity. Major fractions of soil C consist of organic C, carbonates and black C. The turnover rate of black C is lower than that of organic C, and black C abundance decreases the vulnerablility of soil C stock to decomposition under climate change. The aim of this study was to determine the distribution of soil C in different pools and impact of agricultural management on the abundance of different species....
Topics: Biochar, Black carbon, Carbonates, Ethiopia, Soil organic matter
Aerosols have adverse effects on human health and air quality, changing Earth's energy balance and lead to climate change. The components of aerosol are important because of the different spectral characteristics. Based on the low hygroscopic and high scattering properties of organic matter (OM) in fine modal atmospheric aerosols, we develop an inversion algorithm using remote sensing to obtain aerosol components including black carbon (BC), organic matter (OM), ammonium nitrate-like (AN),...
Topics: Aerosol, Chemical components, Hygroscopicity, Organic matter, Remote sensing
Mendeley Climate Change Library
45
45
Jul 6, 2019
07/19
by
Owen F. Rowe; Julie Dinasquet; Joanna Paczkowska; Daniela Figueroa; Lasse Riemann; Agneta Andersson
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Dissolved organic matter (DOM) in marine waters is a complex mixture of compounds and elements that contribute substantially to the global carbon cycle. The large reservoir of dissolved organic carbon (DOC) represents a vital resource for heterotrophic bacteria. Bacteria can utilise, produce, recycle and transform components of the DOM pool, and the physicochemical characteristics of this pool can directly influence bacterial activity; with consequences for nutrient cycling and primary...
Topics: Baltic Sea, DOC utilisation, DOM fluorescence, Dissolved organic matter
Mendeley Climate Change Library
53
53
Jul 6, 2019
07/19
by
Amanda E. Poste; Cathrine Skaar Hoel; Tom Andersen; Michael T. Arts; Per Johan Færøvig; Katrine Borgå
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Increases in terrestrial organic matter (tOM) transport from catchments to boreal lakes can affect methylmercury (MeHg) accumulation in aquatic biota both directly by increasing concentrations of aqueous MeHg, and indirectly through effects on MeHg bioavailability and on energy pathways in the lower food web. We carried out a detailed seasonal study of water chemistry, zooplankton diet, and MeHg accumulation in zooplankton in two lakes with contrasting tOM concentrations. Between-lake...
Topics: Allochthony, Browning, Climate change, Fatty acids, Mercury. Organic matter
Mendeley Climate Change Library
45
45
Jul 6, 2019
07/19
by
Christopher Poeplau; Pierre Barré; Lauric Cécillon; François Baudin; Bjarni D. Sigurdsson
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Soil warming can increase soil organic carbon (SOC) mineralization, triggering a positive climate‑carbon cycle feedback loop. Globally, many soil warming experiments have examined losses of bulk SOC, but few have assessed changes in quality. Accurate knowledge of the latter is required for an in-depth understanding and improved prediction of SOC feedback to climate change. In this study, we used Rock-Eval thermal analysis (RE6) to characterize shifts in SOC thermal stability and bulk...
Topics: Global change, H2O2, NaOCl, Soil organic matter, Thermal analysis
Mendeley Climate Change Library
38
38
Jul 6, 2019
07/19
by
Jennifer M. Galloway; Michael B. Parsons; Hamed Sanei; Andrew L. Macumber; Hendrik Falck
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Climate change is profoundly affecting seasonality, biological productivity, and hydrology in high northern latitudes. In sensitive subarctic environments exploitation of mineral resources led to contamination and it is not known how cumulative effects of resource extraction and climate warming will impact ecosystems. Gold mines near Yellowknife, Northwest Territories, subarctic Canada, operated from 1938 to 2004 and released > 20,000 t of arsenic trioxide (As 2 O 3 ) to the environment...
Topics: Arsenic, Climate change, Lake sediments, Mining, Organic matter, Subarctic
Mendeley Climate Change Library
72
72
Jul 6, 2019
07/19
by
José Lourenço Friedmann Angeli; Belén Rubio; Bianca Sung Mi Kim; Paulo Alves de Lima Ferreira; Eduardo Siegle; Rubens César Lopes Figueira
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Based on multiple proxies, such as major and trace elements, mineralogy, C org /N total ratio and δ 13 C, we assessed the natural and anthropogenic depositional record in a tropical estuary (Caravelas, Brazil). The Caravelas estuary was once a pristine area of highly important ecological role, due to its mangroves and proximity to the largest reef system in the South Atlantic (Abrolhos Archipelago). However, during the past decades, the estuary has been subjected to both natural and...
Topics: Brazil, Caravelas estuary, Estuarine sediments, Geochemistry, Organic matter sources
Mendeley Climate Change Library
75
75
Jul 6, 2019
07/19
by
Jie Xu; Shaohua Lei; Shun Bi; Meng Mu; Chenggong Du; Shuai Zeng
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Particulate organic matter (POM) plays an important role in biological pumping as a source of energy and nutrients in aquatic systems, as well as being the mechanism for algal bloom formation. However, research on its sources and composition, particularly the research on the contribution of algae in the bloom season, is still insufficient. In this study, the sources and composition of the POM in the surface water of Lake Taihu during the algal bloom season were quantitatively analysed. Dual...
Topics: Algal bloom, Particulate organic matter, Source estimating, Stable isotope
The Jorf Lasfar area has known for some decades a remarkable change in lands use. In fact, the installation of the port of Jorf Lasfar, the phosphate complex and an industrial area allowed the invasion of agricultural soils and influenced their fertility. The present work aims to assess the soil fertility through some physico-chemical parameters such as (pH, OM, CaCO3, Total Nitrogen, phosphorus and potassium); the soil samples were carried out according two horizons 0-2.5cm and...
Topics: Soils fertility, pH, Organic Matter, Nutrients elements, Jorf Lasfar.
Urban soils play an essential role in delivering ecosystem services due to soil microbial functions but there is limited evidence of the role of urban soils in the global carbon cycle. Inorganic nitrogen (N) reduces microbial respiration of soil organic matter (SOM) in pristine and managed forest soils but there is less evidence available on the extent to which this occurs in contrasting urban soils. This study examined the ephemeral effect of inorganic N and SOM (woodland versus grassland...
Topics: Extracellular enzymes, Nitrogen, Organic matter, Substrate-induced respiration, Urban soil
Living (Rose-Bengal stained) benthic foraminifera were investigated in eleven stations sampled along transects following a depth gradient from Polcevera and Bisagno canyons and the adjacent open slope (Ligurian Sea), in a depth interval ranging from 200 to 2000 m. In order to understand which environmental factors influence the abundance and taxonomical composition of the foraminiferal assemblages in these two domains (canyon and open slope), qualitative and quantitative foraminiferal data were...
Topics: Benthic foraminifera, Environmental characterization, Ligurian Sea, Organic matter, Submarine...
http://darkorganicmatter.blogspot.gr/
Topic: X-perimental abstraction space noise by IMPLANT [Dark Organic Matter]]
http://darkorganicmatter.blogspot.gr/
Topic: X-perimental electronic space noise by IMPLANT [Dark Organic Matter
53
53
May 29, 2021
05/21
by
@iaset
texts
eye 53
favorite 0
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Larger amount of carbon and carbon dioxide are introduced on the land more than that in living plants. Additionally natural issues in soil have more carbon put away in soils than that in plants, all creatures, and the climate joined. Soil natural issue contains an expected four fold the amount of carbon as living plants. The truth to be told, carbon put away in all the world's wastes is more than multiple times the sum in the climate.
Topics: Organic Matter Decomposition, Global Warming, Climate Change, Carbon Sequestration, Reforestation
Mendeley Climate Change Library
48
48
Jul 6, 2019
07/19
by
Gabriel Y.K. Moinet; Andrew J. Midwood; Peter Millard; John E. Hunt; David Whitehead; Kirsten D. Hannam; Meaghan Jenkins; Mark J. Brewer; Mark A. Adams
texts
eye 48
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Laboratory studies have shown that priming effects, caused by inputs of carbon into the rhizosphere, can change the rate of soil organic matter (SOM) decomposition and could have significant impacts on soil carbon cycling. However, there have been few studies in field conditions because of experimental constraints but field data are needed to improve models that forecast the effects of climate change on SOM decomposition rates and the impact of these changing rates on atmospheric CO2...
Topics: Decomposition, Priming effect, Rhizosphere, Soil organic matter, Stable carbon isotopes
Biochar is being developed as a candidate with great potential for climate change mitigation. Sequestering biochar carbon in soil contributes greatly to the reduction of greenhouse gases emissions, and biochar stability is the most decisive factor that determines its carbon sequestration potential. However, methods that can be used universally for direct or indirect assessment of biochar stability are still under investigation. This present review aims to give comprehensive and detailed...
Topics: Aging, Bio-char, Charcoal, Half-life time, Pyrogenic organic matter, Pyrolysis
0
0.0
Jul 28, 2022
07/22
by
Jean-François Ponge
texts
eye 0
favorite 0
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Three humus profiles were sampled in moist grasslands on loamy sand, representing a chronosequence of an acidifying ecosystem. Over the chronosequence, earthworm activity decreased, from high activity to complete absence of earthworms. We studied the organic matter at three observation levels: the humus-profile, the aggregate and the soil organic matter (SOM)-fraction level. With decreasing earthworm activity a trend in separation of organic and mineral elements can be discerned. Humus forms...
Topics: POM (particulate organic matter) decomposition, SOM fractions, earthworm activity, soil aggregates
Mendeley Climate Change Library
71
71
Jul 5, 2019
07/19
by
Shibin Liu; Kazem Zamanian; Per Marten Schleuss; Mohsen Zarebanadkouki; Yakov Kuzyakov
texts
eye 71
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The Tibetan Plateau hosts the world's largest alpine pastoral ecosystems, dominated by the endemic sedges Kobresia pygmaea and Kobresia humilis. Owing to the very harsh environment and also to soil nitrogen (N) and phosphorus (P) limitations, these pastoral ecosystems are very sensitive to disturbances (e.g. anthropogenic activities and climate change) and recover extremely slowly. Overgrazing on the Tibetan Plateau has caused severe degradation of vegetation and soils in the last 30–50...
Topics: Carbon sequestration, Pasture degradation, Soil nutrients, Soil organic matter, Tibetan plateau
Mendeley Climate Change Library
42
42
Jul 6, 2019
07/19
by
Alexandre Buttler; Géraldine Mercier; Juan Quezada; Luca Bragazza; Konstantin Gavazov
texts
eye 42
favorite 1
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Severe constraints on grasslands productivity, ecosystem functions, goods and services are expected to result from projected warming and drought scenarios under climate change. Negative effects on vegetation can be mediated via soil fertility and water holding capacity, though specific mechanisms are fairly complex to generalise. In field drought experiments, it can be difficult to disentangle a drought effect per se from potential confounding effects related to vegetation or soil type, both...
Topics: Climate change, Fertility, Microbial activity, Microbial biomass, Organic matter, Rain shelter
Mendeley Climate Change Library
54
54
Jul 5, 2019
07/19
by
Iris Lochon; Pascal Carrère; Sandrine Revaillot; Juliette M.G. Bloor
texts
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Grassland management has the potential to modify soil carbon (C) mineralization, but the relative importance of combined soil improvers or fertilizers and land use intensity on C mineralization remains unclear. We used laboratory incubations to examine the interactive effects of lime addition, mineral N inputs and grassland management intensity on soil C mineralization potential over 84 days. Monitoring of CO2 production and O2 consumption was coupled with measurements of soil pH and microbial...
Topics: Acidic soils, CO2 emissions, Calcium carbonate, Grassland management, Soil organic matter
The present works were carried out to determine the impact of different municipal solid waste compost (mswc) soil extracts (Tap water, 5%, 10%, 15%, 20%, 25%, 30% and distilled water (control) obtained from mswc (degraded soil) and different mixing ratio of mswc and distilled water on the percentage of relative seed germination (RSG%), vigor index, root length, shoot length of soya bean (Glycine max). Mung (Vigna radiate,), Lentil (Lens culinaris) were studying by bioassay method. Seeds were...
Topics: Degraded soil, relative seed germination, vigor index, plant nutrient, organic matter.
Mendeley Climate Change Library
37
37
Jul 6, 2019
07/19
by
S. Keyvanshokouhi; S. Cornu; F. Lafolie; J. Balesdent; B. Guenet; N. Moitrier; C. Nougier; P. Finke
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Soil organic carbon (OC) sequestration (i.e. the capture and long-term storage of atmospheric CO2) is being considered as a possible solution to mitigate climate change, notably through land use change (conversion of cropped land into pasture) and conservation agricultural practices (reduced tillage). Subsoil horizons (from 30 cm to 1 m) contribute to ca. half the total amount of soil OC, and the slow dynamics of deep OC as well as the relationships between the OC depth distribution and changes...
Topics: Climate change, Model formalisms, OC projection, Organic matter, Pasture, Reduced tillage
Mendeley Climate Change Library
49
49
Jul 6, 2019
07/19
by
Valeria Cardelli; Mauro De Feudis; Giuseppe Corti; Flavio Fornasier; Luisa Massaccesi; Stefania Cocco; Alberto Agnelli; David C. Weindorf
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This study evaluated soil properties along a small transect in the Apennines chain (central Italy). Using latitude and altitude as surrogates for temperature differences, three locations at different latitudes were selected for the study. At each location, two altitudes were selected (800 and 1000 m). The study was conducted by contrasting chemical and biochemical parameters [microbial biomass-C content, amount of CO 2 evolved during basal respiration (ΣCO 2 –C), and potential enzyme...
Topics: Climate change, Enzyme activity, Forest soils, Organic horizons, Soil organic matter
Capsicum is one of the most widely consumed vegetables and is also used as a spice for its pungency. Many species of Capsicum are being cultivated worldwide. Capsicum is considered as a commercial crop for their economic value. However, the yield of the crop suffers severely due to salt stress, Soil salinity reduces water availability of plant roots via negative (low) osmosis potential, as well as decrease of germination dynamics of plant seeds by ionic toxicity of Na and Cl , Significant...
Topics: salinity, salt stress, pepper, Gibberellins, organic matter, poultry manure, nutrient availability.
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169
Jun 2, 2011
06/11
by
Pinelli, Thomas E.; Perry, Jeannin
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A telephone survey of television station managers concerning 2 instructional television programs, the NASA SCI Files(TM) and NASA CONNECT(TM), offered by the NASA Langley Center for Distance Learning (CDL) was conducted. Using a 4-point scale, with 4 being very satisfied, survey participants reported that they were either very satisfied (77.1 percent) or satisfied (19.9 percent) with the overall (educational and technical) quality of the NASA SCI Files(TM). Using a 4-point scale, with 4 being...
Topics: DISSOLVED ORGANIC MATTER, ABSORPTIVITY, OPTICAL MEASUREMENT, SPECTROMETERS, WATER COLOR, PORTABLE...
There is no doubt that organic matter plays an important role in shale gas accumulation and storage. Thus, successful evaluation and production strategies of organic-rich shale deposits require an understanding of the range of factors that contribute to the accumulation and preservation of organic matter in these deposits. This paper reports results of a multi-faceted study of two Ordovician–Silurian transition sections of the Upper Yangtze Platform of South China. Organic and inorganic...
Topics: Organic matter accumulation, Organic-rich shale, Palaeoenvironment, Paleoproductivity, Redox...
Mendeley Climate Change Library
35
35
Jul 6, 2019
07/19
by
Connie O'Driscoll; José L.J. Ledesma; John Coll; John G. Murnane; Paul Nolan; Eva M. Mockler; Martyn N. Futter; Liwen W. Xiao
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Natural organic matter poses an increasing challenge to water managers because of its potential adverse impacts on water treatment and distribution, and subsequently human health. Projections were made of impacts of climate change on dissolved organic carbon (DOC) in the primarily agricultural Boyne catchment which is used as a potable water supply in Ireland. The results indicated that excluding a potential rise in extreme precipitation, future projected loads are not dissimilar to those...
Topics: Carbon cycle, Climate change, INCA-C, Ireland, Natural organic matter, Surface water
Mendeley Climate Change Library
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57
Jul 6, 2019
07/19
by
Marcel van der Perk; Maria Stergiadi; Ton C.M. de Nijs; Rob N.J. Comans; Marc F.P. Bierkens
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Changes in soil hydrology as a result of climate change or changes in land management may affect metal release and leaching from soils. The aim of this study is to assess the cascading response of SOM and DOC levels and metal leaching to climate change in the medium-sized lowland Dommel catchment in the southern part of the Netherlands. We implemented the CENTURY model in a spatial setting to simulate SOM, DOC, and water dynamics in topsoils of the Dutch portion of the Dommel catchment under...
Topics: CENTURY model, Climate change, Heavy metals, Leaching, Soil organic matter, Spatial modelling
Mendeley Climate Change Library
38
38
Jul 6, 2019
07/19
by
Juana Rodríguez; Andrew S. Ball; Francisco J. González-Vila; M. Enriqueta Arias
texts
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Wildfires are a recurrent disturbance in Mediterranean forests, triggered by high fuel load, high environmental temperature and low humidity. Although, human intervention is behind the initiation of most fire episodes, the situation is likely to worsen in the future due to the effects of climate change in the Mediterranean “hot-spot”. Here we study chemical, physical and microbial characteristics of burnt soils from two well differentiated sites at Sierra de Cazorla, Segura and Las Villas...
Topics: Clone libraries, DGGE, Organic matter, Soil microbial activity, Soil microbial diversity, Wildfires
Hydrolysis of cellulose to glucose is a key reaction in renewable energy from biomass and in mineralization of soil organic matter to CO2. Conditional thermodynamic parameters, ΔhydG’ ΔhydH’ and ΔhydS’ and equilibrium glucose concentrations are reported for the reaction C6H10O5(cellulose) + H2O(l) ⇄ C6H12O6(aq) as functions of temperature from 0 to 100 °C. Activity coefficients of aqueous glucose solution were determined as a function of temperature. The reaction free energy...
Topics: Biomass, Global warming, Glucose activity coefficient, Lignocellulose, Renewable energy, Soil...
Mendeley Climate Change Library
34
34
Jul 6, 2019
07/19
by
Jin Liao; Chaoyong Hu; Miao Wang; Xiuli Li; Jiaoyang Ruan; Ying Zhu; Ian J. Fairchild; Adam Hartland
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Acid rain has the potential to significantly impact the quantity and quality of dissolved organic matter (DOM) leached from soil to groundwater. Yet, to date, the effects of acid rain have not been investigated in karstic systems, which are expected to strongly buffer the pH of atmospheric rainfall. This study presents a nine-year DOM fluorescence dataset from a karst unsaturated zone collected from two drip sites (HS4, HS6) in Heshang Cave, southern China between 2005 and 2014....
Topics: Acid rain, Climate change, Dissolved organic Matter, Fluorescence, Karst groundwater, Unsaturated...
Maneb is a broad spectrum fungicide, often reported as a carcinogenic, teratogenic and neurodegenerative agent. Thus, the occurrence of maneb at non-targeted sites is a cause of concern. The present study investigates adsorption–desorption behaviour of maneb in the agricultural soils to know its fate, mobility and availability in the soil. The sorption study was carried out by batch equilibration procedure. Maneb adsorption followed Langmuir isotherm and was accompanied by increase in...
Topics: Fungicide, Parkinson disease, Manganese, Organic matter, engineering journal, International...
Maneb is a broad spectrum fungicide, often reported as a carcinogenic, teratogenic and neurodegenerative agent. Thus, the occurrence of maneb at non-targeted sites is a cause of concern. The present study investigates adsorption–desorption behaviour of maneb in the agricultural soils to know its fate, mobility and availability in the soil. The sorption study was carried out by batch equilibration procedure. Maneb adsorption followed Langmuir isotherm and was accompanied by increase in...
Topics: Fungicide, Parkinson disease, Manganese, Organic matter, engineering journal, Journal, Research...
Recent evidence suggests that oxygen limitations are a critical regulator of soil organic matter mineralization rates, even within seemingly well-drained upland soils. Oxygen limitations may arise in otherwise well-aerated soils when oxygen consumption (via microbial respiration) in soil microsites outpaces oxygen supply (through diffusion). Due to analytical limitations, attempts to parameterize oxygen limitations in models have so far been limited to measures of bulk oxygen concentrations or...
Topics: Climate change, Metabolic diversity, Redox gradients, Soil carbon stabilization, Soil organic...
