Application of a food chain model to polychlorinated biphenyl contamination of the lobster and winter flounder food chains in New Bedford Harbor

1991 ◽  
Vol 25 (4) ◽  
pp. 760-770 ◽  
Author(s):  
John P. Connolly
Keyword(s):  
Food Chain ◽  
Polychlorinated Biphenyl ◽  
Winter Flounder ◽  
Food Chains ◽  
Chain Model ◽  
New Bedford Harbor ◽  
Food Chain Model

Equilibrium Model of Fate of Microcontaminants in Diverse Aquatic Food Chains

1981 ◽  
Vol 38 (3) ◽  
pp. 280-296 ◽  
Author(s):  
Robert V. Thomann
Keyword(s):  
Food Chain ◽  
Chain Transfer ◽  
Body Burden ◽  
The Body ◽  
Food Chains ◽  
Chain Model ◽  
Bioaccumulation Factors ◽  
Top Predators ◽  
Food Chain Model ◽  
Food Chain Transfer

Bioconcentration and bioaccumulation factors of PCB, 239Pu, and 137Cs are compiled from the literature as a function of organism size. The distribution of field-observed bioaccumulation factors varies markedly between each substance but similarly to order of magnitude within each substance across diverse food chains. It can be inferred from the literature that PCB levels in top predators are due primarily to food chain transfer. A steady state compartment food chain model is derived for estimation of the relative effect of uptake directly from water versus food chain transfer. The model food chain transfer number f, given by αC/K + G for α = chemical absorption efficiency, C = specific consumption, K = excretion rate, and G = net organism growth rate indicates the degree of food chain accumulation. For f > 1, food chain transfer is significant; for f < 1, uptake from water is more significant. Application of the model suggests that (a) PCB body burden in top predators is due almost entirely to consumption of contaminated prey, (b) for 239Pu all of the body burden is due to uptake from the water only, and (c) observed 137Cs concentration factors are due principally to food chain transfer with a high dependence on the salinity-dependent phytoplankton adsorption.Key words: food chain model, bioconcentration, bioaccumulation, PCB, 239Pu, 137Cs, water uptake, food chain transfer

scholarly journals Chaos in Beddington–DeAngelis food chain model with fear

2020 ◽  
Vol 1591 ◽  
pp. 012082
Author(s):  
Hiba Abdullah Ibrahim ◽  
Raid Kamel Naji
Keyword(s):  
Food Chain ◽  
Chain Model ◽  
Food Chain Model

Dynamics of three-species food chain model with two delays of fear

2021 ◽  
Author(s):  
Renxiang Shi ◽  
Zonghai Hu
Keyword(s):  
Food Chain ◽  
Chain Model ◽  
Two Delays ◽  
Food Chain Model

Bifurcations and multistability in a food chain model with nanoparticles

2021 ◽  
Author(s):  
Mainul Hossain ◽  
N.C. Pati ◽  
Saheb Pal ◽  
Sourav Rana ◽  
Nikhil Pal ◽  
...  
Keyword(s):  
Food Chain ◽  
Chain Model ◽  
Food Chain Model

Return time and vulnerability for a food chain model

1979 ◽  
Vol 15 (2) ◽  
pp. 217-231 ◽  
Author(s):  
Thomas L. Vincent ◽  
Leonard R. Anderson
Keyword(s):  
Food Chain ◽  
Return Time ◽  
Chain Model ◽  
Food Chain Model

Controlling Chaos in a Food Chain Model through Threshold Harvesting

2015 ◽  
Vol 06 (04) ◽  
Author(s):  
Mohammad Ali Khan ◽  
Joydev Ghosh
Keyword(s):  
Food Chain ◽  
Chain Model ◽  
Controlling Chaos ◽  
Food Chain Model
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