Cerium Biomagnification in a Terrestrial Food Chain: Influence of Particle Size and Growth Stage

2016 ◽  
Vol 50 (13) ◽  
pp. 6782-6792 ◽  
Author(s):  
Sanghamitra Majumdar ◽  
Jesica Trujillo-Reyes ◽  
Jose A. Hernandez-Viezcas ◽  
Jason C. White ◽  
Jose R. Peralta-Videa ◽  
...  
Keyword(s):  
Particle Size ◽  
Food Chain ◽  
Growth Stage ◽  
Terrestrial Food Chain

Particle-Size Dependent Accumulation and Trophic Transfer of Cerium Oxide through a Terrestrial Food Chain

2014 ◽  
Vol 48 (22) ◽  
pp. 13102-13109 ◽  
Author(s):  
Joseph Hawthorne ◽  
Roberto De la Torre Roche ◽  
Baoshan Xing ◽  
Lee A. Newman ◽  
Xingmao Ma ◽  
...  
Keyword(s):  
Particle Size ◽  
Cerium Oxide ◽  
Food Chain ◽  
Trophic Transfer ◽  
Size Dependent ◽  
Terrestrial Food Chain

Particle-Size-Conversion Efficiency and Contaminant Concentrations in Lake Ontario Biota

1983 ◽  
Vol 40 (3) ◽  
pp. 328-336 ◽  
Author(s):  
Uwe Borgmann ◽  
D. M. Whittle
Keyword(s):  
Particle Size ◽  
Body Size ◽  
Conversion Efficiency ◽  
Food Chain ◽  
Lake Ontario ◽  
Dry Weight ◽  
Growth Efficiency ◽  
Fish Production ◽  
The Relationship ◽  
Zooplankton Production

The particle-size-conversion efficiency (log food consumption/production divided by log predator prey size ratio) is shown to be directly related to the relationship between the concentration of persistent contaminants accumulated primarily through the food chain and body size for organisms in pelagic ecosystems. The difference between particle-size-conversion efficiency for biomass and that for the contaminant gives the slope of the relationship between log contaminant concentration and log body size. This provides a useful theoretical framework for analyzing contaminant concentrations in aquatic biota without the need for specifying trophic level but still incorporating the idea of food chain accumulation. Concentrations of PCB, DDT, and mercury were examined in aquatic organisms from Lake Ontario, ranging in size from zooplankton to large salmonids (a 108 -fold range in dry weight). The slope of the double log plot of concentration versus weight varied from 0.20 to 0.22 for PCB and DDT and was approximately equal to 0.13 for mercury. This indicates that mercury is accumulated less efficiently through the food chain than PCB or DDT. After correcting for incomplete uptake and retention of the contaminant, an estimate of particle-size-conversion efficiency for biomass of about 0.26 was obtained, which agrees reasonably well with previous estimates obtained from growth efficiency experiments and analysis of particle-size spectra. These calculations indicate that potential fish production in Lake Ontario is ~ 120-fold lower than zooplankton production (for fish averaging 108-fold larger in body size as compared to zooplankton).Key words: particle-size-conversion efficiency, PCB, DDT, mercury, zooplankton production, fish production

Trophic Transfer of Au Nanoparticles from Soil along a Simulated Terrestrial Food Chain.

2012 ◽  
Vol 46 (17) ◽  
pp. 9753-9760 ◽  
Author(s):  
Jason M. Unrine ◽  
W. Aaron Shoults-Wilson ◽  
Oksana Zhurbich ◽  
Paul M. Bertsch ◽  
Olga V. Tsyusko
Keyword(s):  
Food Chain ◽  
Au Nanoparticles ◽  
Trophic Transfer ◽  
Terrestrial Food Chain

Discerning the Sources of Silver Nanoparticle in a Terrestrial Food Chain by Stable Isotope Tracer Technique

2019 ◽  
Vol 53 (7) ◽  
pp. 3802-3810 ◽  
Author(s):  
Fei Dang ◽  
Yuan-Zhen Chen ◽  
Ying-Nan Huang ◽  
Holger Hintelmann ◽  
You-Bin Si ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Silver Nanoparticle ◽  
Food Chain ◽  
Tracer Technique ◽  
Stable Isotope Tracer ◽  
Isotope Tracer ◽  
Terrestrial Food Chain

scholarly journals Fumonisin Distribution in Maize Dry-Milling Products and By-Products: Impact of Two Industrial Degermination Systems

Toxins ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 357 ◽  
Author(s):  
Francesca Vanara ◽  
Valentina Scarpino ◽  
Massimo Blandino
Keyword(s):  
Particle Size ◽  
Food Chain ◽  
Animal Feed ◽  
Dry Milling ◽  
Whole Grain ◽  
Maize Flour ◽  
By Products

In temperate areas, the main limitation to the use of maize in the food chain is its contamination by B-series fumonisins (FBs) during cultivation. Since the content of this group of mycotoxins may be distributed unevenly after milling, the aim of this study was to compare the distribution of FBs in maize fractions derived from two industrial dry-milling processes, that is, a dry-degermination (DD) system and a tempering-degermination (TD) system. Grain cleaning reduces FBs by about 42%. The germ of the two degermination processes showed a similar FB content of kernel after cleaning. Conversely, an animal feed flour resulted in a FB content that was two times higher than whole grain before cleaning. A significant FB reduction was observed in the milling fractions in both processes, with a higher reduction in the TD system than in the DD one. The average decontamination respect to uncleaned kernels in the DD process was 50%, 83% and 87%, for maize flour, break meal and pearl meal, respectively, while it was 78%, 88% and 94% in the TD process for small, medium and flaking grits, respectively. Among the milling fractions, the flaking grits with the highest particle size resulted in the highest FB reduction.

A Terrestrial Food-Chain Bioaccumulation Model for POPs

2007 ◽  
Vol 41 (11) ◽  
pp. 4019-4025 ◽  
Author(s):  
James M. Armitage ◽  
Frank A. P. C. Gobas
Keyword(s):  
Food Chain ◽  
Terrestrial Food Chain

Evaluation of a terrestrial food chain model for estimating foodstuff concentrations of PCDD/Fs

Chemosphere ◽  
1997 ◽  
Vol 34 (8) ◽  
pp. 1723-1737 ◽  
Author(s):  
Stuart J. Harrad ◽  
David J.T. Smith
Keyword(s):  
Food Chain ◽  
Chain Model ◽  
Terrestrial Food Chain ◽  
Food Chain Model

Occurrence of methylated mercury in a terrestrial food chain

1981 ◽  
Vol 26 (1) ◽  
pp. 174-181 ◽  
Author(s):  
J.W. Huckabee ◽  
D.M. Lucas ◽  
J.M. Baird
Keyword(s):  
Food Chain ◽  
Terrestrial Food Chain

scholarly journals Field evidence for transfer of plastic debris along a terrestrial food chain

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Esperanza Huerta Lwanga ◽  
Jorge Mendoza Vega ◽  
Victor Ku Quej ◽  
Jesus de los Angeles Chi ◽  
Lucero Sanchez del Cid ◽  
...  
Keyword(s):  
Food Chain ◽  
Plastic Debris ◽  
Terrestrial Food Chain ◽  
Field Evidence
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