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Full-Text Articles in Life Sciences

Effects Of Environmental Change On Ancestral Pueblo Fishing In The Middle Rio Grande, Jonathan W. Dombrosky Dr. May 2021

Effects Of Environmental Change On Ancestral Pueblo Fishing In The Middle Rio Grande, Jonathan W. Dombrosky Dr.

Anthropology ETDs

It has long been assumed that fishes were unimportant in the diet of past Pueblo people in the U.S. Southwest. Yet, small numbers of fish remains are consistently recovered from Late pre-Hispanic/Early Historic archaeological sites in the Middle Rio Grande of New Mexico. The end of drought conditions may have impacted food choice and fishing decisions during this time. I use behavioral ecology to understand how fishing could have been an optimal food-getting strategy for Ancestral Pueblo farmers. Stable isotope analysis offers a way to account for environmental change. I provide a refined 13C Suess correction model to support …


"Climatic Controls Of Plant Productivity, Phenology, And Physiology In Drylands, Alesia Hallmark, Scott L. Collins, Marcy E. Litvak, Christopher D. Lippitt, Andrew D. Richardson May 2021

"Climatic Controls Of Plant Productivity, Phenology, And Physiology In Drylands, Alesia Hallmark, Scott L. Collins, Marcy E. Litvak, Christopher D. Lippitt, Andrew D. Richardson

Biology ETDs

Drylands play a critical role in global carbon dynamics. Anthropogenic climate change is causing these hot and dry regions to become increasingly hotter, drier, and more variable. This is especially concerning as drylands are some of the most sensitive regions to changes in aridity. It is critical to understand how dryland plant species might react to a changing climate. In this dissertation, I explored the relative effects of plant community composition and dominant species abundance on determining ecosystem-wide carbon dynamics. I compared the population stability of 98 dryland plant species and related stability to phenological traits. Lastly, I related branch …