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An individual based model for the to...

Siopsis, Maria.

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An individual based model for the toxic algae species Pseudo-nitzschia multiseries.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	An individual based model for the toxic algae species Pseudo-nitzschia multiseries./
作者:	Siopsis, Maria.
面頁冊數:	125 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1360.
Contained By:	Dissertation Abstracts International65-03B.
標題:	Mathematics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3127001

An individual based model for the toxic algae species Pseudo-nitzschia multiseries.
Siopsis, Maria.

An individual based model for the toxic algae species Pseudo-nitzschia multiseries. - 125 p.

Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1360.

Thesis (Ph.D.)--The University of Tennessee, 2003.

In 1987 an outbreak of a previously unobserved disease occurred in Canada and was traced back to the toxin domoic acid produced by the diatom Pseudo-nitzschia multiseries. Since then, fisheries closures due to domoic acid have occurred worldwide. Pseudo-nitzschia species produce domoic acid under nutrient stress including low silicon or phosphorus with an abundance of nitrogen. However, it is still unclear what conditions cause the dangerously high levels that have sometimes been observed. We present an individual-based algae model detailing the physiology of an algal cell with a focus on nutrient and energy flows to delineate the causes of domoic acid production.Subjects--Topical Terms:

515831
Mathematics.

An individual based model for the toxic algae species Pseudo-nitzschia multiseries.
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100 1 $a Siopsis, Maria. $3 1953386
245 1 3 $a An individual based model for the toxic algae species Pseudo-nitzschia multiseries.
300 $a 125 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1360.
500 $a Major Professor: Thomas G. Hallam.
502 $a Thesis (Ph.D.)--The University of Tennessee, 2003.
520 $a In 1987 an outbreak of a previously unobserved disease occurred in Canada and was traced back to the toxin domoic acid produced by the diatom Pseudo-nitzschia multiseries. Since then, fisheries closures due to domoic acid have occurred worldwide. Pseudo-nitzschia species produce domoic acid under nutrient stress including low silicon or phosphorus with an abundance of nitrogen. However, it is still unclear what conditions cause the dangerously high levels that have sometimes been observed. We present an individual-based algae model detailing the physiology of an algal cell with a focus on nutrient and energy flows to delineate the causes of domoic acid production.
520 $a The model has been adapted to the specific problem of Pseudo-nitzschia multiseries by including silicon dynamics, a frustule component, domoic acid production, and sexual reproduction. The individual model is incorporated into a population model using a McKendrick-von Foerster partial differential equation.
520 $a Fits of the model to experimental data from chemostat and batch experiments are done on two separate strains of Pseudo-nitzschia multiseries. The differences in parameter values required to fit each experiment reveal differences in the physiology in the two strains, specifically in nutrient uptake, photosynthetic rate and the level of toxin production possible. Simulations are done using the calibrated model which show that silicon limitation must be concurrent with an abundance of nitrogen for domoic acid production to be high.
590 $a School code: 0226.
650 4 $a Mathematics. $3 515831
650 4 $a Biology, Ecology. $3 1017726
650 4 $a Biology, Microbiology. $3 1017734
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710 2 0 $a The University of Tennessee. $3 1022026
773 0 $t Dissertation Abstracts International $g 65-03B.
790 1 0 $a Hallam, Thomas G., $e advisor
790 $a 0226
791 $a Ph.D.
792 $a 2003
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