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Modeling the Climatic Niche of Wild Carica Papaya

Scheppler, Hannah B.
http://orcid.org/0000-0002-3746-7398
http://rave.ohiolink.edu/etdc/view?acc_num=miami157490469591439

Abstract Details

2019, Master of Science, Miami University, Biology.
Crop wild relatives can be a source of beneficial traits to be used for crop improvement. Carica papaya is a staple crop throughout the globe, domesticated from wild relatives native to Central America. I used the program Maxent to model the bioclimatic aspects of wild papaya’s niche and compared these models to regions of known farmed areas and areas where papaya has invaded outside its native range. I developed two models after optimizing for resampling and bias-curbing schemes. A simpler model employing non-covariate predictors was used to identify the main aspects of wild papaya’s climatic niche while a more complex model, including all 19 bioclimatic predictors, was utilized to make predictions to new environments. Models were consistent with known farmed areas, supporting the utility of the model. Additionally, I compared predictions to known invasions, and results were consistent overall, minus one invasion in Texas. Global projections under climate change resulted in likely over-predictions, but the current climate model is likely to be accurate based on consistency with farmed and invaded areas. These results can be used to identify locations where farms may be successful, assess risk of invasions, and identify under-sampled areas for biological studies.
Richard Moore (Advisor)
Tereza Jezkova (Committee Member)
David Berg (Committee Member)
79 p.
Agriculture; Biology; Botany; Geographic Information Science
Maxent, crop wild relatives, niche modeling, Carica papaya

Recommended Citations

Citations

  • Scheppler, H. B. (2019). Modeling the Climatic Niche of Wild Carica Papaya [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami157490469591439

    APA Style (7th edition)

  • Scheppler, Hannah. Modeling the Climatic Niche of Wild Carica Papaya. 2019. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami157490469591439.

    MLA Style (8th edition)

  • Scheppler, Hannah. "Modeling the Climatic Niche of Wild Carica Papaya." Master's thesis, Miami University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami157490469591439

    Chicago Manual of Style (17th edition)

miami157490469591439
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© 2019, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.