Digital Commons Network^™

Diversity – Independent Factors Predict Elevated Extinction Rates, Dustin Perriguey, Corinne Myers, Jason Moore, Louis Scuderi

Earth and Planetary Sciences ETDs

Multiple linear regression was used to determine the relationships between diversity-independent factors (i.e., abiotic, climatic) 2, 5, and 10 Myrs-prior to the most elevated Phanerozoic extinctions. We constructed five abiotic variables from Phanerozoic proxy records1–5 to compare to extinction rates: mean temperature, temperature instability, carbon cycle instability, continental weathering rates, and habitat instability. All three models were statistically significant (P < 0.05) and explained > 70% of the variation in Alroy’s6 three-timer generic extinction rates. However, the 2 Myr-prior model explained the most variance in extinction rates and had the most predictive power, based on adjusted and predictive R2 (~ 72% and 41%, respectively). Carbon …

Diversity – Independent Factors Predict Elevated Extinction Rates, Dustin Perriguey

Earth and Planetary Sciences Faculty and Staff Publications

Multiple linear regression was used to determine the relationships between diversity-independent factors (i.e., abiotic, climatic) 2, 5, and 10 Myrs-prior to the most elevated Phanerozoic extinctions. We constructed five abiotic variables from Phanerozoic proxy records1–5 to compare to extinction rates: mean temperature, temperature instability, carbon cycle instability, continental weathering rates, and habitat instability. All three models were statistically significant (P < 0.05) and explained > 70% of the variation in Alroy’s6 three-timer generic extinction rates. However, the 2 Myr-prior model explained the most variance in extinction rates and had the most predictive power, based on adjusted and predictive R2 (~ 72% and 41%, respectively). Carbon …

A Genetic Diversity Analysis Of Wild Caragana Korshinskii Based On Allozyme And Aflp, Zan Wang, Xuemin Wang, Hongwen Gao

IGC Proceedings (1977-2023)

No abstract provided.

Biological And Economical Characteristics Of Galega Orientalis Lam, Zhongsheng Zhi, Wanquan Lian, Jianguang Wang, Weihua Gao, Yajun Zhi

IGC Proceedings (1977-2023)

No abstract provided.

Distribution Law And Utilizable Potentialities Of Three Kinds Of Clover Germplasm Resources In Xinjiang, Laixi Zhao, Yuqing Wang, Chunbo Xu, Ying De

IGC Proceedings (1977-2023)

No abstract provided.

Physiological Responses To Salt Stress At Seedling Stage In Festuca, Xinming Wu, Y. Q. Wang, J. N. Liu, P. Guo, Y. Zhang, H. W. Chi

IGC Proceedings (1977-2023)

No abstract provided.

Domestication Of Leymus Paboanus (Claus) Pilger, Dusu Wen, Hailian Sun, Chunli Bai, A. Lata

IGC Proceedings (1977-2023)

No abstract provided.

Study On Hybrid Selective Breeding Of High Quality Variety — Medicago Sativa L. Cv. Xinduo, Zhizhong Yang, Aikebar, Jie Li, Ming Din

IGC Proceedings (1977-2023)

No abstract provided.

Evaluation Of Native Ecotypes And Modern Cultivars Of Grasses And Legumes In Mongolia, D. Tumenjargal, D. Namkhai, B. Turtogtokh, N. Enkhtuya, L. Bayarmaa, D. Lkhagvasuren, Sodnomdarjaa Jigjidsuren

IGC Proceedings (1977-2023)

No abstract provided.

Prospects Of Triticale As Fodder And Feed In Farming Of Bangladesh, N. Tabassum, M. R. Uddin, U. S. Gim

IGC Proceedings (1977-2023)

No abstract provided.

Evaluation Of The Performance Of Seventeen Varieties Of Alfalfa (Medicago Sativa L), Yan Sun, Qingchuan Yang

IGC Proceedings (1977-2023)

No abstract provided.

Seed Rain And Viable Soil Seed Bank Of 'Black Soil Land' Degraded Alpine Meadow In Qinghai‐Tibetan Plateau, Zhanhuan Shang, Yushou Ma, Ruijun Long

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Sowing Methods And Seeding Rates On Chemical Composition Of Tephrosia Bracteolata, Olufemi S. Onifade, T. A. Amole, Alaba O. Jolaosho, O. M. Arigbede, Jimoh A. Olanite, U. Y. Anele, A. M. Oyeladun

IGC Proceedings (1977-2023)

No abstract provided.

Pyrrolizidine Alkaloid Content And Seed Toxicity In Crotalaria Species, J. A. Mosjidis, I. Khan, J. Hess

IGC Proceedings (1977-2023)

No abstract provided.

Comparative Study Of The Microbiome Of The Native Plant Ceanothus Velutinus (Snowbrush) From Different Locations And Greenhouse Studies, Jyothsna Ganesh

Student Research Symposium

Climatic change is one of the biggest threats to the ecosystem and biodiversity by enhancing environmental stresses. Environmental stresses such as biotic and abiotic stresses affect plant health and reduce crop production. The rhizosphere microbiome of a plant plays a significant role in a plant's defense against various biotic and abiotic stresses. In this study, we are investigating the microbiome diversity of bulk soil, rhizosphere, and endosphere of Ceanothus velutinus, snowbrush. Ceanothus is an evergreen native plant that is usually found in dry areas and thrives well in harsh conditions. The snowbrush samples were collected from different locations 1920m, 1950m, …

Prediction Of Reproductive Initiation From Relative Ear Emergence Timing In Lolium Perenne L. Varieties, G. Hurley, M. O. Donovan, Trevor J. Gilliland

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Selection For Seed Size On Grazing‐Type Population Of An Inter‐Specific Hybrid (Pennisetum Purpureum × P. Glaucum), R. Usberti, J. A. Usberti Jr., P. B. Alcantara, A. T. Tsuhako

IGC Proceedings (1977-2023)

No abstract provided.

Boehmeria Nivea: Biomass Production Of A Promising Forage Species, Iván Lenin Montejo Sierra, Onel López Vigoa, Nidia Amador Domínguez, Idania Scull, Jantje Hannover

IGC Proceedings (1977-2023)

No abstract provided.

Tropical Forage Meals: An Alternative For Sustainable Monogastric Species Production, Lourdes Savón, Idania Scull, L. E. Dihigo, Madeleidy Martínez, Anayansi Albert, Liliam Leiva

IGC Proceedings (1977-2023)

No abstract provided.

Seed Production And Seed Quality Of Brachiaria Hybrids (Mulato And Mulato Ii) At Different Sites Of Thailand, Chaisang Phaikaew, Pimpaporn Pholsen, Ganda Nakamanee, Weerapon Poonpipat

IGC Proceedings (1977-2023)

No abstract provided.

Tolerance To Copper Stress In Elephantgrass (Pennisetum Purpureum) Under Soil Culture, Xinghua Liu, Yixing Shen, Yujiao He, Chenglong Ding, Qingsheng Cai

IGC Proceedings (1977-2023)

No abstract provided.

Selections And Characters Of L‐Hydroxyoroline Resistant Medicago Sativa L. Varieties, Hong Li, Bo Li

IGC Proceedings (1977-2023)

No abstract provided.

Factors Influencing Adoption Of Cattle Excreta Management Practices For Improved Elephant Grass (Pennisetum Purpureum) Production By Smallholder Dairy Farmers, Fred Kabi, F. B. Bareeba

IGC Proceedings (1977-2023)

No abstract provided.

Breeding Sustainable Forages For Alpine Areas In Qinghai Province, K. De Bruijn, Q. P. Zhou, G. Liang, H. Yan, L. Fang, Y. Ji

IGC Proceedings (1977-2023)

No abstract provided.

Antioxidant Activity, Vitamin Profiles And Polyphenol Contents Of Pasture Grasses And Legumes, Herbs And Wild Plants For Improved Animal Products, Y. Tamura, H. Sano, T. Masumizu, K. Yamaki, M. Al‐Mamun

IGC Proceedings (1977-2023)

No abstract provided.

Review And Prospect Of Forage Germplasm Resource Protection In China, Xiaofang Li

IGC Proceedings (1977-2023)

No abstract provided.

A Foray Into Laboratory Scale Soil Incubations With Corn Stover And High Lignin Fermentation Byproduct, Michelle Wang

ENGS 88 Honors Thesis (AB Students)

As the production of biofuels increases to meet the demands of a growing low carbon economy, questions of sustainability surrounding its feedstock and waste streams have become increasingly relevant. In the biofuel production process, crop residues like corn stover are harvested from the field and converted to biofuels leaving generating a residue called high lignin fermentation byproduct (HLFB). From extensive process modelling in the literature, it is suggested that HLFB should be either combusted to fuel auxiliary conversion processes or returned to the soil in place of the crop residues that were harvested. Currently, there is little literature testing the …

College Of Natural Sciences Newsletter, April 2021, College Of Natural Sciences

College of Natural Sciences Newsletters and Reports

Volume 2, Issue 4

Page 1 Dean's Message
Page 2 & 3 Awards & Recognition
Page 4 Student Spotlight: Allsion Bjornstad
Page 5 Research Spotlight: Dr. Vondruska & Students
Page 6 Department Head Interviews
Page 7 Media Coverage of CNS
Page 8 Open PRAIRIE Data
Page 9 Student Club Spotlight: BMGSA
Page 10 Then & Now: Urban Geography

The Miocene: The Future Of The Past, M. J. Kohn

Geosciences Faculty Publications and Presentations

The Miocene epoch (23.03–5.33 Ma) was a time interval of global warmth, relative to today. Continental configurations and mountain topography transitioned toward modern conditions, and many flora and fauna evolved into the same taxa that exist today. Miocene climate was dynamic: long periods of early and late glaciation bracketed a ∼2 Myr greenhouse interval—the Miocene Climatic Optimum (MCO). Floras, faunas, ice sheets, precipitation, pCO₂, and ocean and atmospheric circulation mostly (but not ubiquitously) covaried with these large changes in climate. With higher temperatures and moderately higher pCO₂ (∼400–600 ppm), the MCO has been suggested as …

Characterization Of Uranium, Lead, And Rare Earth Element Pollution In Natural Soils And Sediments, Hope Rasmussen

Civil and Environmental Engineering Theses and Dissertations

Heavy metals in the environment add to the global burden of pollution, negatively impacting public health and ecosystem resilience. This study included projects regarding uranium (U), lead (Pb), and rare earth elements (REE) in natural samples, due to their known toxicity, ubiquity, and relevance in context to recent pollution trends. The first project focused on testing the potential of using a hydroxyapatite product as a remediation solution for U-contaminated groundwater and soil at an EPA Superfund site. The results showed that the U was sequestered in a highly crystalline mineral form within the solids, guiding the EPA to specify the …