Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

You searched for +publisher:"University of New Hampshire" +contributor:("Shadi S. Atallah"). One record found.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters

1. Gao, Yixuan. THE BIOECONOMICS OF SHADE-GROWN COFFEE PRODUCTION UNDER CLIMATE AND PRICE RISKS IN PUERTO RICO.

Degree: MS, 2018, University of New Hampshire

Coffee production is severely affected by global climate change. One of the important impacts comes from the increasing infestation and distribution of coffee berry borer (CBB), the most damaging coffee pest worldwide. Shade-grown coffee (SGC) systems can alleviate the impacts and increase the resilience of coffee farms by providing non-market and market ecosystem services. From an ecological perspective, SGC systems can provide many non-market ecosystem services such as pest risk mitigation, soil water retention, soil fertility, and pollination, which are all critical factors affecting coffee yields. From a financial perspective, SGC systems can benefit farmers by increasing the prices through shade-grown certification price premiums or quality price premiums, reducing price risks faced by farmers by providing alternative sources of income such as shade, and reducing the production risks by allowing more steady year-to-year coffee production. However, SGC systems can be more labor-intensive and often produce lower yields either due to lower per-shrub yields or due to lower coffee shrub density, or both, which can decrease farmers’ profits. Although farmers might agree that environmental conservation is an important goal of SGC systems, planting decisions are likely to be driven by farm production costs and revenues. The existence of trade-offs between ecosystem service provision and coffee production calls for an integrated bioeconomic analysis of SGC systems before recommendations can be made to farmers, with the net value of ecosystem service provision and the risk effects taken into consideration. In this thesis, we construct an integrated bioeconomic model, including a cellular automata model, a coffee yield model, and an economic model, to incorporate the ecosystem services and risk preferences into a farmer’s decision-making and find the optimal amount of shade on a coffee farm for risk-neutral and risk-averse farmers. Results show that, for risk-neutral farmers, the shade-grown systems generate higher net present values (NPVs) than sun-grown systems within shading levels of 12% - 37%. The optimal shading level is 24% and the optimal NPV is about $24,593 /0.5ha over 25 years. For moderately risk-averse farmers, shade-grown systems generate higher utility than a sun-grown system at any shading level, and the optimal shading level is 30%. Higher risk aversion leads to higher shading level selection. In the United States, the CBB is a new threat to the domestic production in Puerto Rico and Hawaii. Results of this thesis can inform policy discussions on the economic argument for shade-grown coffee systems that, under optimal shade levels, can maximize farm profits while to protecting farmers from temperature and price risks. Advisors/Committee Members: Shadi S. Atallah, Heidi Asbjornsen, Marek Petrik.

Subjects/Keywords: Bioeconomic models; Coffee agroforestry systems; Coffee berry borer; Ecosystem-based adaptation; Ecosystem services; Puerto Rico; Ecology; Agriculture economics; Environmental economics

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Gao, Y. (2018). THE BIOECONOMICS OF SHADE-GROWN COFFEE PRODUCTION UNDER CLIMATE AND PRICE RISKS IN PUERTO RICO. (Thesis). University of New Hampshire. Retrieved from https://scholars.unh.edu/thesis/1218

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Gao, Yixuan. “THE BIOECONOMICS OF SHADE-GROWN COFFEE PRODUCTION UNDER CLIMATE AND PRICE RISKS IN PUERTO RICO.” 2018. Thesis, University of New Hampshire. Accessed June 07, 2020. https://scholars.unh.edu/thesis/1218.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Gao, Yixuan. “THE BIOECONOMICS OF SHADE-GROWN COFFEE PRODUCTION UNDER CLIMATE AND PRICE RISKS IN PUERTO RICO.” 2018. Web. 07 Jun 2020.

Vancouver:

Gao Y. THE BIOECONOMICS OF SHADE-GROWN COFFEE PRODUCTION UNDER CLIMATE AND PRICE RISKS IN PUERTO RICO. [Internet] [Thesis]. University of New Hampshire; 2018. [cited 2020 Jun 07]. Available from: https://scholars.unh.edu/thesis/1218.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gao Y. THE BIOECONOMICS OF SHADE-GROWN COFFEE PRODUCTION UNDER CLIMATE AND PRICE RISKS IN PUERTO RICO. [Thesis]. University of New Hampshire; 2018. Available from: https://scholars.unh.edu/thesis/1218

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.