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Full text release has been delayed at the author's request until December 06, 2029

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Improving Abundance Estimates of the Black River Populatio of Textas Hornshell Via Zero Inflated Modeling

Inoshita, Gabriel T
http://orcid.org/0009-0001-3254-7794
http://rave.ohiolink.edu/etdc/view?acc_num=miami1733408738291364

Abstract Details

2024, Master of Science, Miami University, Biology.
Human-induced climate change has been impacting ecological systems around the world. These impacts include increases in temperature and changes in precipitation. Freshwater mussels are one of the taxonomic groups most affected by these changes, leading to the decline of many species of mussels. I sought to improve population estimates for the Black River population of the Texas Hornshell mussel (Popenaias popeii), in Eddy County, NM. I investigated changes in demographic parameters through a 27-year mark-and-recapture study, discovering that the total population is decreasing by about 1.67% per year with individual survival rates at 81.5% per year. In 2023-2024, I repeated a population census using methods that were also used in 2011-2012 and 2017-2018. Combining the results of the three censuses, I generated a zero-inflated Poisson model to predict abundance within the river with good fit to the testing data, which improved estimate precision by 80% compared to previous methods. I found that estimated model error doubles every 5 years into the future and that reduced sampling designs can produce good estimates with limited decrease in precision. Reduced sampling and this model combined with periodic complete surveys should allow managers to control costs while precisely assessing abundance.
David Berg (Advisor)
Tereza Jezkova (Committee Member)
Kentaro Inoue (Committee Member)
Hank Stevens (Committee Member)
39 p.
Biology; Conservation; Ecology; Statistics
Conservation Biology, Endangered Species, Freshwater Mussel, Modeling, Zero-Inflated Models, Texas Hornshell, Popenaias popeii

Recommended Citations

Citations

  • Inoshita, G. T. (2024). Improving Abundance Estimates of the Black River Populatio of Textas Hornshell Via Zero Inflated Modeling [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1733408738291364

    APA Style (7th edition)

  • Inoshita, Gabriel. Improving Abundance Estimates of the Black River Populatio of Textas Hornshell Via Zero Inflated Modeling. 2024. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1733408738291364.

    MLA Style (8th edition)

  • Inoshita, Gabriel. "Improving Abundance Estimates of the Black River Populatio of Textas Hornshell Via Zero Inflated Modeling." Master's thesis, Miami University, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=miami1733408738291364

    Chicago Manual of Style (17th edition)

miami1733408738291364
© 2024, some rights reserved.Creative Commons License Improving Abundance Estimates of the Black River Populatio of Textas Hornshell Via Zero Inflated Modeling by Gabriel T Inoshita is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Miami University and OhioLINK.