Earth Sciences Commons^™

Porosity And Permeability Extremes In An Eogenetic Carbonate Platform: Mechanisms For Formation And Implications For Fluid Flow, Charles I. Breithaupt

USF Tampa Graduate Theses and Dissertations

Carbonate rocks contain about a third of the worlds drinking water and host 60-70% of proven hydrocarbon reserves. Effective development and management of these resources relies heavily on geologic concepts used to predict the distribution, and magnitude of porosity and permeability in the aquifer or reservoir. Most geologic concepts used for flow prediction have been developed in telegenic limestones, where fracture networks, bedding plains, and conduits hosted in effectively impermeable bedrock control the movement of fluids, and evolution of porosity. However, a growing body of work has recognized fluid flow within eogenetic limestones is fundamentally different, and that new concepts …

The Influence Of Simulating Warming Effect On Ranunculus Brotherusii, Jianzhong Zhao, Wei Liu

IGC Proceedings (1977-2023)

No abstract provided.

Seasonal And Diurnal Variations Of Net Ecosystem Co2 Exchange Over Songnen Meadow Steppe In Northeastern China, Gang Dong, Jixun Guo, Liangjun Hu

IGC Proceedings (1977-2023)

No abstract provided.

A Scientific Framework For Forecasting Carbon Sequestration In Rangelands, Christopher Dean, R. J. Harper

IGC Proceedings (1977-2023)

No abstract provided.

Coral Reef Restoration In The Tropical West Atlantic Amid The Covid-19 Pandemic, Linden Cheek

USF Tampa Graduate Theses and Dissertations

Climate change is increasing threats to coasts, both from storm surge and sea level rise. Healthy coral reefs provide reduction in storm surges, wave energy, coastal flooding and everyday erosion, and are found across a variety of spatial scales. Given the state of coral reefs worldwide, active Coral Reef Restoration (CRR) in emerging as a necessary component of coastal protection. CRR can be classified as a nature-based solutions (NbS) for coastal protection that also provides a multitude of ecosystem-based services to both humans and other life. Nearly all literature on coral restoration efforts assume a steady-state of human-ecological interactions, but …

Evidence Of Nickel And Other Trace Elements And Their Relationship To Clinical Findings In Acute Mesoamerican Nephropathy: A Case-Control Analysis, Rebecca S. B. Fischer, Jason M. Unrine, Chandan Vangala, Wayne T. Sanderson, Sreedhar Mandayam, Kristy O. Murray

Plant and Soil Sciences Faculty Publications

BACKGROUND: Although there are several hypothesized etiologies of Mesoamerican Nephropathy (MeN), evidence has not yet pointed to the underlying cause. Exposure to various trace elements can cause the clinical features observed in MeN.

METHODS AND FINDINGS: We measured 15 trace elements, including heavy metals, in renal case-patients (n = 18) and healthy controls (n = 36) in a MeN high-risk region of Nicaragua. Toenails clippings from study participants were analyzed using inductively coupled plasma mass spectrometry. A case-control analysis was performed, and concentrations were also analyzed over participant characteristics and clinical parameters. Nickel (Ni) concentrations were significantly higher in toenails …

Host Density Dependence And Environmental Factors Affecting Laurel Wilt Disease Incidence, Robin A. Choudhury, H. L. Er, M. Hughes, J. A. Smith, G. E. Pruett, J. Konkol, R. C. Ploetz, J. J. Marois, K. A. Marois, A. H. C. Van Bruggen

School of Earth, Environmental, & Marine Sciences Faculty Publications

Host size, density, and distribution, in addition to climate, can affect the likelihood a pathogen will invade and saturate landscapes. Laurel wilt, caused by the vector‐borne pathogen Raffaelea lauricola, has devastated populations of native Lauraceae in the Southeastern US, and continues to spread. We surveyed 87 plots in six coastal islands in South Carolina, Georgia, and North Florida, and one inland site (Archbold Biological Station) in South Florida for laurel wilt‐affected and non‐affected individual plants belonging to the genus Persea. The coastal island sites were surveyed once in 2008 or 2009, and the inland site was surveyed eight …

A Geologically Based Indoor-Radon Potential Map Of Kentucky, William C. Haneberg, Amanda T. Wiggins, Douglas C. Curl, Stephen F. Greb, William M. Andrews Jr., Kathy Rademacher, Mary Kay Rayens, Ellen J. Hahn

Faculty, Staff, and Affiliated Publications--KGS

We combined 71,930 short-term (median duration 4 days) home radon test results with 1:24,000-scale bedrock geologic map coverage of Kentucky to produce a statewide geologically based indoor-radon potential map. The test results were positively skewed with a mean of 266 Bq/m³, median of 122 Bq/m³, and 75th percentile of 289 Bq/m³. We identified 106 formations with ≥10 test results. Analysis of results from 20 predominantly monolithologic formations showed indoor-radon concentrations to be positively skewed on a formation-by-formation basis, with a proportional relationship between sample means and standard deviations. Limestone (median 170 Bq/m³) …

Save Water Drink Wine: Challenges Of Implementing The Ethnography Of The Temecula Valley Wine Industry Into Food-Energy-Water Nexus Decision-Making, Zaida E. Darley

USF Tampa Graduate Theses and Dissertations

This study demonstrates the interrelationships of people, food, energy, and water associated with Temecula Valley’s wine industry and reveals contradictions and biases in how people view these resources, which ultimately shape management and policies. The FEW (Food, Energy, and Water) Nexus is an approach increasingly used by policy- and decision-makers to understand the interrelationship of several resources. However, a FEW Nexus approach often lacks in social aspects that influence environmentally and economically sustainable outcomes, especially in the wine and wine tourism industry. When quantitative and qualitative data are available, the other challenge is which assessment to use. Two assessments often …

Aspergillus Niger Decreases Bioavailability Of Arsenic(V) Via Biotransformation Of Manganese Oxide Into Biogenic Oxalate Minerals, Bence Farkas, Marek Kolenčík, Miroslav Hain, Edmund Dobročka, Gabriela Kratošová, Marek Bujdoš, Huan Feng, Yang Deng, Qian Yu, Ramakanth Illa, B. Ratna Sunil, Hyunjung Kim, Peter Matúš, Martin Urík

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

The aim of this work was to evaluate the transformation of manganese oxide (hausmannite) by microscopic filamentous fungus Aspergillus niger and the effects of the transformation on mobility and bioavailability of arsenic. Our results showed that the A. niger strain CBS 140837 greatly affected the stability of hausmannite and induced its transformation into biogenic crystals of manganese oxalates—falottaite and lindbergite. The transformation was enabled by fungal acidolysis of hausmannite and subsequent release of manganese ions into the culture medium. While almost 45% of manganese was bioextracted, the arsenic content in manganese precipitates increased throughout the 25-day static cultivation of fungus. …

Modeling Holocene Peatland Carbon Accumulation In North America, Qianlai Zhuang, Sirui Wang, Bailu Zhao, Filipe Aires, Catherine Prigent, Zicheng Yu, Jason K. Keller, Scott Bridgham

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Peatlands are a large carbon reservoir. Yet the quantification of their carbon stock still has a large uncertainty due to lacking observational data and well‐tested peatland biogeochemistry models. Here, a process‐based peatland model was calibrated using long‐term peat carbon accumulation data at multiple sites in North America. The model was then applied to quantify the peat carbon accumulation rates and stocks within North America over the last 12,000 years. We estimated that 85–174 Pg carbon was accumulated in North American peatlands over the study period including 0.37–0.76 Pg carbon in subtropical peatlands. During the period from 10,000 to 8,000 years …

Impacts And Adaptation To Climate Change In Beef Production Systems In Central Queensland, David H. Cobon, N. R. Toombs

IGC Proceedings (1977-2023)

No abstract provided.

Carbon Exchange From Four Agro‐Ecosystems On The Loess Plateau, China, Xianjiang Chen, Fujiang Hou

IGC Proceedings (1977-2023)

No abstract provided.

Response Of Co2 Emissions To The Grazing And Enclosure In Temperate Grassland Ecosystem, Junbo Chen, Zhigang Li, Fujiang Hou

IGC Proceedings (1977-2023)

No abstract provided.

Soil Carbon In Soils Of South Coastal Western Australia Under Different Farm Management Systems, Including Sub‐Tropical Perennial Pastures, N. Y. Chalmer

IGC Proceedings (1977-2023)

No abstract provided.

Interactions Between Defoliation, Warming, And Drought In A Native Northern Grassland In Alberta, Canada, J. F. Cahill, E. W. Bork, S. X. Chang, H. C. Proctor, S. D. Wilson

IGC Proceedings (1977-2023)

No abstract provided.

Carbon Balance In Stand Of An Annual Herb At An Elevated Co2 Concentration, Almaz Borjigidai, Kouki Hikosaka, Tadaki Hirose

IGC Proceedings (1977-2023)

No abstract provided.

The Impact Of Climate Change On Grassland--A Modelling Approach, Lianhai Wu, C. F. E. Topp

IGC Proceedings (1977-2023)

No abstract provided.

The Climate Change Challenge For Managed Grasslands In New Zealand, Judy Lawrence

IGC Proceedings (1977-2023)

No abstract provided.

Carbon Stocks And Environmental Controls Of China's Grasslands, Jingyun Fang, Yuanhe Yang, Wenhong Ma, Anwar Mohammat

IGC Proceedings (1977-2023)

No abstract provided.

Study Of Effects Of Irrigation With Waste Water On Growing Season Of Bromus Tecrum, Nafiseh Taghavi, Mohammad Jaafari

IGC Proceedings (1977-2023)

No abstract provided.

The Examination Of Grazing Intensity Effects On Capability Of Water Influence In Rangelands Soil--A Case Study: Alpine Rangelands In North Of Iran (Alborz Mountains), Sirous Azadi, N. Safaian, R. Safaian

IGC Proceedings (1977-2023)

No abstract provided.

Use Of Benthic Macroinvertebrates As Indicators Of Water Quality In River Njoro, Kenya, H. Makoba, W. A. Shivoga

IGC Proceedings (1977-2023)

No abstract provided.

The Effects Of Stocking Rate And Corn Gluten Supplemental Feed On The Performance Of Young Beef Cows, A. D. Nkengafac, P. Tinta, G. Ayuk, M. Mansue, F. Fuh

IGC Proceedings (1977-2023)

No abstract provided.

Fungal Community Structure And Function Shifts With Atmospheric Nitrogen Deposition, Jessica A. M. Moore, Mark A. Anthony, Gregory J. Pec, Lidia K. Trocha, Artur Trzebny, Kevin M. Geyer, Linda T. A. Van Diepen, Serita D. Frey

Faculty Publications

Fungal decomposition of soil organic matter depends on soil nitrogen (N) availability. This ecosystem process is being jeopardized by changes in N inputs that have resulted from a tripling of atmospheric N deposition in the last century. Soil fungi are impacted by atmospheric N deposition due to higher N availability, as soils are acidified, or as micronutrients become increasingly limiting. Fungal communities that persist with chronic N deposition may be enriched with traits that enable them to tolerate environmental stress, which may trade-off with traits enabling organic matter decomposition. We hypothesized that fungal communities would respond to N deposition by …

Research On Establishing Webgis Of Grassland Resources For Inner Mongolia, Qing Yuan, Jiating Wang, Dongmei Zhang, Yongping Dong

IGC Proceedings (1977-2023)

No abstract provided.

Remote Sensing Monitoring For The Key Phonological Stages Of Rangeland — A Case Study About Xilingol Grassland, Aijun Liu, Jianguo Han

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Single Irrigation On Yield And Wue Of Siberian Wildrye Grass In Agro‐Pastoral Transition Zone Of China, Hao Wang, Zizhong Li, Zhongyan Wang, Ding Huang

IGC Proceedings (1977-2023)

No abstract provided.

Research On The Remote Sensing Monitoring Ecological Environmental Changes In Hulun Lake Area, Narisu, Gegentu

IGC Proceedings (1977-2023)

No abstract provided.

Modeling The Impact Of Grazing On Water Budgets, Ying Zhao, Stephan Peth, Julia Krümmelbein, Bettina Ketzer, Yingzhi Gao, Christian Bernhofer, Rainer Horn

IGC Proceedings (1977-2023)

No abstract provided.