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Evaluation of greenhouse gas emissio...

Herringshaw, Andrew Lee.

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Evaluation of greenhouse gas emissions from three dairy production systems in Iowa---Conventional, grazing, and combination conventional/grazing.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Evaluation of greenhouse gas emissions from three dairy production systems in Iowa---Conventional, grazing, and combination conventional/grazing./
Author:	Herringshaw, Andrew Lee.
Description:	96 p.
Notes:	Source: Masters Abstracts International, Volume: 48-05, page: 2797.
Contained By:	Masters Abstracts International48-05.
Subject:	Agriculture, General. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1475927
ISBN:	9781109762303

Evaluation of greenhouse gas emissions from three dairy production systems in Iowa---Conventional, grazing, and combination conventional/grazing.
Herringshaw, Andrew Lee.

Evaluation of greenhouse gas emissions from three dairy production systems in Iowa---Conventional, grazing, and combination conventional/grazing. - 96 p.

Source: Masters Abstracts International, Volume: 48-05, page: 2797.

Thesis (M.S.)--Iowa State University, 2010.

International debate continues about the potential effects of global warming and agriculture's role in creating and mitigating it. Needed in this discussion are detailed analyses of production systems and the factors within systems that may reduce emissions with global warming potential. I created a life cycle assessment computer model to quantify emissions from three dairy systems in Iowa---grazing, conventional, and conventional/grazing. These were modeled using system expansion methodology and SimaPro 7.1 software. Results suggest that there is a difference in emissions between system types, but more potential for reduction exists within each system than the difference between the systems.

ISBN: 9781109762303Subjects--Topical Terms:

1017510
Agriculture, General.

Evaluation of greenhouse gas emissions from three dairy production systems in Iowa---Conventional, grazing, and combination conventional/grazing.
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100 1 $a Herringshaw, Andrew Lee. $3 1671758
245 1 0 $a Evaluation of greenhouse gas emissions from three dairy production systems in Iowa---Conventional, grazing, and combination conventional/grazing.
300 $a 96 p.
500 $a Source: Masters Abstracts International, Volume: 48-05, page: 2797.
500 $a Adviser: Michael D. Duffy.
502 $a Thesis (M.S.)--Iowa State University, 2010.
520 $a International debate continues about the potential effects of global warming and agriculture's role in creating and mitigating it. Needed in this discussion are detailed analyses of production systems and the factors within systems that may reduce emissions with global warming potential. I created a life cycle assessment computer model to quantify emissions from three dairy systems in Iowa---grazing, conventional, and conventional/grazing. These were modeled using system expansion methodology and SimaPro 7.1 software. Results suggest that there is a difference in emissions between system types, but more potential for reduction exists within each system than the difference between the systems.
520 $a Previously unanalyzed characteristics of dairy systems, such as interval between calving and culling rate differ between systems and have considerable effects on the net emissions. Using the COWPOLL mechanistic enteric fermentation estimation method was key in accurately differentiating emissions from grass-fed and concentrate-fed animals. Sensitivity analysis on each individual characteristic of the dairy systems leads us to conclusions of how emissions may be reduced, which differs between the dairy systems. Life cycle assessments such as this one may help lower emissions from dairy systems by targeting individual characteristics within dairy systems that can effectively reduce greenhouse gas emissions.
590 $a School code: 0097.
650 4 $a Agriculture, General. $3 1017510
650 4 $a Environmental Sciences. $3 676987
690 $a 0473
690 $a 0768
710 2 $a Iowa State University. $b Economics. $3 1033976
773 0 $t Masters Abstracts International $g 48-05.
790 1 0 $a Duffy, Michael D., $e advisor
790 1 0 $a Anex, Robert P. $e committee member
790 1 0 $a Edwards, William M. $e committee member
790 1 0 $a Pirog, Richard S. $e committee member
790 1 0 $a Timms, Leo L. $e committee member
790 $a 0097
791 $a M.S.
792 $a 2010
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1475927