Short-term and seasonal dynamics of bacterial biomass production and amino acid turnover in the water column of an intertidal ecosystem, the Wadden Sea

Organic amendments may improve the quality of acidic tropical agricultural soils with low organic carbon contents under conventional management (mineral fertilization and irrigation) in Southeast Asia. We investigated the effect of biochar, compost and their combination on maize growth and yield, soil physical, biological and chemical properties at harvesting time at four sites in three countries: Thailand, Vietnam and Laos. Treatments consisted of 10 t·ha−1 cow manure compost and 7 t·ha−1 of Bamboo biochar and their combination. Maize biomass production and cop yields were recorded for two seasons. Elemental content, pH and nutrient availability of soils were analyzed after the first growing season. We also characterized macrofauna abundance and water infiltration. Few changes were noted for maize biomass production and maize cop yield. Soil chemical parameters showed contrasting, site-specific results. Compost and biochar amendments increased soil organic carbon, pH, total K and N, P and K availability especially for sandy soils in Thailand. The combination of both amendments could reduce nutrient availability as compared to compost only treatments. Physical and biological parameters showed no treatment response. We conclude that the addition of compost, biochar and their mixture to tropical soils have site-specific short-term effects on chemical soil parameters. Their short-term effect on plants is thus mainly related to nutrient input. The site-dependent results despite similar crops, fertilization and irrigation practices suggest that inherent soil parameters and optimization of organic amendment application to specific pedoclimatic conditions need future attention.

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Seasonal Dynamics of the Tissue Levels of Total Protein, Free Amino Acid and Ribonucleic Acid in an Indian Air-Breathing Teleost Channa punctatus

Acta Biologica Hungarica ◽

10.1007/bf03543184 ◽

1997 ◽

Vol 48 (2) ◽

pp. 135-144

Author(s):

A. B. Das ◽

R. Roy

Keyword(s):

Amino Acid ◽

Free Amino Acid ◽

Seasonal Dynamics ◽

Total Protein ◽

Ribonucleic Acid ◽

Free Amino ◽

Channa Punctatus ◽

Air Breathing ◽

Tissue Levels

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PROTEIN SYNTHESIS AND AMINO ACID TURNOVER IN TISSUE CULTURE

Journal of Biological Chemistry ◽

10.1016/s0021-9258(18)55705-7 ◽

1952 ◽

Vol 196 (1) ◽

pp. 51-68 ◽

Cited By ~ 3

Author(s):

H.W. Gerarde ◽

Marion. Jones ◽

Theodore. Winnick

Keyword(s):

Tissue Culture ◽

Protein Synthesis ◽

Amino Acid ◽

Amino Acid Turnover

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Data-Driven Study on the Sustainable Log Movements: Impact of Rail Car Fleet Size on Freight Storage and Car Idling

Sustainability ◽

10.3390/su12114563 ◽

2020 ◽

Vol 12 (11) ◽

pp. 4563

Author(s):

Sangpil Ko ◽

Pasi Lautala ◽

Kuilin Zhang

Keyword(s):

Service Life ◽

Seasonal Dynamics ◽

Lake Superior ◽

Data Driven ◽

Short Term ◽

Fleet Size ◽

Interesting Observation ◽

The Us ◽

Term Storage ◽

Scale Data

Rail car availability and the challenges associated with the seasonal dynamics of log movements have received growing attentions in the Lake Superior region of the US, as a portion of rail car fleet is close to reaching the end of its service life. This paper proposes a data-driven study on the rail car peaking issue to explore the fleet of rail cars dedicated to being used for log movements in the region, and to evaluate how the number of cars affects both the storage need at the sidings and the time the cars are idled. This study is based on the actual log scale data collected from a group of forest companies in cooperation with the Lake State Shippers Association (LSSA). The results of our analysis revealed that moving the current log volumes in the region would require approximately 400–600 dedicated and shared log cars in ideal conditions, depending on the specific month. While the higher fleet size could move the logs as they arrive to the siding, the lower end would nearly eliminate the idling of rail cars and enable stable volumes throughout the year. However, this would require short-term storage and additional handling of logs at the siding, both elements that increase the costs for shippers. Another interesting observation was the fact that the reduction of a single day in the loading/unloading process (2.5 to 1.5 days) would eliminate almost 100 cars (20%) of the fleet without reduction in throughput.

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Short-term warming and water stress affect Panicum maximum Jacq. stoichiometric homeostasis and biomass production

The Science of The Total Environment ◽

10.1016/j.scitotenv.2019.05.108 ◽

2019 ◽

Vol 681 ◽

pp. 267-274 ◽

Cited By ~ 8

Author(s):

Dilier Olivera Viciedo ◽

Renato de Mello Prado ◽

Carlos Alberto Martínez ◽

Eduardo Habermann ◽

Marisa de Cássia Piccolo

Keyword(s):

Water Stress ◽

Biomass Production ◽

Panicum Maximum ◽

Short Term

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Effect of Intraduodenal Starch Infusion on Net Portal Absorption of Amino Acids in Growing steers Fed Lucerne

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600025800 ◽

1994 ◽

Vol 1994 ◽

pp. 28-28

Author(s):

C.J. Seal ◽

D.S. Parker ◽

J.C. MacRae ◽

G.E. Lobley

Keyword(s):

Amino Acids ◽

Amino Acid ◽

Gastrointestinal Tract ◽

Protein Turnover ◽

Portal Blood ◽

Intestinal Lumen ◽

Short Term ◽

Net Uptake ◽

Amino Acid Requirements ◽

Glucose Availability

Amino acid requirements for energy metabolism and protein turnover within the gastrointestinal tract are substantial and may be met from luminal and arterial pools of amino acids. Several studies have demonstrated that the quantity of amino acids appearing in the portal blood does not balance apparent disappearance from the intestinal lumen and that changing diet or the availability of energy-yielding substrates to the gut tissues may influence the uptake of amino acids into the portal blood (Seal & Reynolds, 1993). For example, increased net absorption of amino acids was observed in animals receiving exogenous intraruminal propionate (Seal & Parker, 1991) and this was accompanied by changes in glucose utilisation by the gut tissues. In contrast, there was no apparent change in net uptake of [l-13C]-leucine into the portal vein of sheep receiving short term intraduodenal infusions of glucose (Piccioli Cappelli et al, 1993). This experiment was designed to further investigate the effects on amino acid absorption of changing glucose availability to the gut with short term (seven hours) or prolonged (three days) exposure to starch infused directly into the duodenum.

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