Digital Commons Network^™

Effect Of Salt Stress On The Tall Wheatgrass At The Stage Of Seedling, Kuanhu Dong, Yanqing Liu

IGC Proceedings (1977-2023)

No abstract provided.

Diachronic Analysis Of Vegetation In The Sylvopastoral Zone (Senegal): What Lesson To Learn From?, A. T. Diop, A. Diouf, A. Wane

IGC Proceedings (1977-2023)

No abstract provided.

The Effect Of Hay Covered On Soil Evaporation, Xiangxin Cui, Yong Gao, Xingyuan Zhang

IGC Proceedings (1977-2023)

No abstract provided.

Experimental Study On Stipa Bungeana Grassland Of Enclosed, Cutting And Grazing Succession For 26 Years Semi‐Arid Region Of Northwest, J. M. Cheng, L. P. Qiu, Q. Wang, J. Cheng, X. N. Jia

IGC Proceedings (1977-2023)

No abstract provided.

Variation Of Pod Activity In Roots Of Different Fall Dormancy Alfalfa Under The Autumn Cutting, Libo Chen, Lei Liu, Zhiyong Li, Meizhen Wang

IGC Proceedings (1977-2023)

No abstract provided.

Grazing Behaviors Of Goats And Sheep In Winter And Spring In A Desert Steppe, H. J. Chen, Mingjiu Wang, Y. M. Shan, Zh. Y. Wu, Zh. Q. Li

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Different Enzyme Combination And Dissociation‐Time On The Protoplast Isolation Of Alfalfa, Aiping Chen, Yupeng Luo, Run Yan, Bo Zhang

IGC Proceedings (1977-2023)

No abstract provided.

The Effects Of Surface-Water Flow On The Quality Of Groundwater And Surface-Water Systems, Quanghee Yi

USF Tampa Graduate Theses and Dissertations

My research has focused on the effects of surface-water flow on the quality of groundwater and surfacewater systems. For the first part of my research (Chapter 2 ), I s tudied the effects of s urface flow system changes in the water-conservation areas and canals in southeast Florida on the quality of groundwater in the surficial aquifer system.

For the second part of my research, by developing analytical models using the superposition method, I investigated the effects of bidirectional surface-water flow on the conservative contaminant concentrations (Chapter 4) and mean residence time (Chapter 5) in streams and rivers as well …

Analysis Of Photosynthetic Characteristics Of Heteropogon Contortusin Arid‐Hot Valley Areas Of Jinsha River, Yufen Bi, X. L. Ma, T. Sun

IGC Proceedings (1977-2023)

No abstract provided.

The Caloric Values Of Main Plant Species And Functional Groups In The Steppe Communities Of Xilin River Basin, Yajing Bao, Zhenghai Li

IGC Proceedings (1977-2023)

No abstract provided.

Plant Energy Functional Groups And Their Coupling Relationship With The Functional Degradation Of Steppe Ecosystem, Yajing Bao, Zhenghai Li, Xingguo Han

IGC Proceedings (1977-2023)

No abstract provided.

Profile Of Water Uptake In Winterfat During Seed Germination, Ruojing Wang, Yuguang Bai, Edward J. Kendall, Karen Tanino

IGC Proceedings (1977-2023)

No abstract provided.

Adaptation Benefit Two Grass Coexisting In Meadow Steppe Of Northeast China, Lei Ba, Wei Xu, Deli Wang

IGC Proceedings (1977-2023)

No abstract provided.

Soil Seed Bank Of Three Populations Of Capparis Decidua (Forssk.) Edgew, Abdulaziz M. Assaeed

IGC Proceedings (1977-2023)

No abstract provided.

Janus: A Python Package For Agent-Based Modeling Of Land Use And Land Cover Change, K. E. Kaiser, A. N. Flores, C. R. Vernon

Geosciences Faculty Publications and Presentations

Janus is an open source Python package for agent-based modeling (ABM) of land use and land cover change (LULCC). Many ABMs of LULCC have been created across platforms, some of which are not ideal for large scale, high resolution scenarios. This model provides a simple object-oriented framework for creating ABMs specific to LULCC. The organizational philosophy of the modeling framework is to create software objects (agents) that are associated with specific and contextual attributes which are isolated from where those agents exist in the spatial setting of the model, and still provide clear linkages between the agent, their environment, and …

Studies Of Quaternary Depositional Systems Of The Coastal Plain And Inner Continental Shelf Along The Georgia Bight: South Carolina And Georgia, U.S.A., Joshua H. Long

Electronic Theses and Dissertations

The Quaternary stratigraphy of the continental shelf offshore of South Carolina consists of stratigraphic units deposited in coastal plain, shallow marine, and shelfal environments bound by composite erosional surfaces that developed in response to numerous glacioeustatic cycles and overprinted by regional uplift. These units are commonly distributed laterally rather than stacked vertically, a function of the long-term, low shelf gradient and the resulting lack of accommodation. This study integrates high-resolution geological and geophysical data sets acquired offshore and onshore with existing data onshore into a comprehensive conceptual model describing the Quaternary geologic evolution of the coastal plain and continental shelf …

Analysis Of Paleoclimatic Cycles In The Ultra Thick Coal Seam Of Yan'an Formation In The Southern Ordos Basin, Dong Guoqi, Wang Dongdong, Liu Haiyan, Mao Qiang, Yin Lusheng

Coal Geology & Exploration

Coal is a climate-sensitive sediment that contains abundant paleoclimate information. In order to find out the paleoclimate information contained in the coal seam and the evolution of its controlling factors, the No.4 thick coal seam in the first member of Yan’an Formation in the south of Ordos basin was studied. Based on the intensive sampling of the thick coal seam, the information of organic macerals, major and trace elements, and stable carbon isotopes of organic matter were systematically tested. By using the macerals, characteristic elements and carbon isotopes of coal and rocks, four cycles of paleoclimate with alternation of warm-wet …

Biogeochemical Cycling Of Nutrients And Carbon In Subtropical Wetlands, Lauren N. Griffiths

USF Tampa Graduate Theses and Dissertations

As human development intensifies, ecosystems around the word are being exponentially destroyed and degraded. Wetlands have the capacity to mitigate some of the possible problems by retaining nutrients and carbon, keeping them from harming downstream ecosystems or being released into the atmosphere. This project focuses on the processes that make wetlands successful by studying two unique ecosystems: 1) a created urban stormwater treatment wetland and 2) mangrove wetlands in Florida and Puerto Rico that were affected by hurricanes in 2017.

The first phase of this study investigates the role of sedimentation and vegetative and algal uptake of nutrients to retain …

The Role Of Plant Richness & Diversity On Ecological Equilibrium Of Rangeland Habitats On Alborz Mountain (North Of Iran), D. Asgarizadeh, M. H. Jouri, V. Rahimi, J. Shahi

IGC Proceedings (1977-2023)

No abstract provided.

Relationships Between Veresk Rangeland Vegetation And Environmental Characteristic Using Multivariate Analysis Methods, E. Shahriary, M. Beniaz, A. Tavili, H. M. Asgari, H. Khedrigharibvand

IGC Proceedings (1977-2023)

No abstract provided.

Somatic Embryogenesis And Plant Regeneration From Immature Inflorescences Of Pennisetum Purpureum Schumach (Napier Grass), Xiaoxian Zhong, Jianming She, Hongru Gu, Jianli Zhang, Wanchao Ni

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Nacl Concentration On Embryogenic Callus Growth And Plant Regeneration Of Pennisetum Purpureum Schumach (Napier Grass) In Vitro, Xiaoxian Zhong, Jianming She, Hongru Gu

IGC Proceedings (1977-2023)

No abstract provided.

Grassland Sustainability And Livestock Production In Taipusi Banner, Inner Mongolia, Y. Zheng, David R. Kemp, Z. Xu, R. Jones, T. Takahashi, Q. Tian, T. Xilin

IGC Proceedings (1977-2023)

No abstract provided.

The Growth Of Size On Cynodon Dactylon Clone In Yili River Valley, Yu Zhao, Haiyan Li, Yunfei Yang

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Drought Stress On Protective Enzymes Activities In Leaves Of Lespedeza Dahurica Seedlings, Xiang Zhao, Zhibing Hou

IGC Proceedings (1977-2023)

No abstract provided.

Development Of A Benthic Foraminifera Based Marine Biotic Index (Foram-Ambi) For The Gulf Of Mexico: A Decision Support Tool, Bryan O'Malley

USF Tampa Graduate Theses and Dissertations

The Gulf of Mexico (GoM) is an economically important region (e.g. oil and gas, fisheries) and with the expansion of oil drilling, harmful algal bloom events, oil blowouts, dead zones, anthropogenic eutrophication and contaminant loading, it is important that the ecological quality statuses (EcoQS) of different localities in the Gulf are closely monitored. The EcoQS, as implemented by the European Water Framework Directive, is an effective tool for monitoring ecological health and developing reference conditions. One such index used to define EcoQS is the AZTI Marine Biotic Index (AMBI), which pairs species abundance with environmental stressors. Benthic foraminifera are ideal …

Investigating The Isotope Signatures Of Dissolved Iron In The Southern Atlantic Ocean, Brent A. Summers

USF Tampa Graduate Theses and Dissertations

Iron (Fe), used as a cofactor in nitrogen fixation and photosynthesis by oceanic microorganisms, has extremely low dissolved concentrations in the surface ocean, leading to widespread limitation of phytoplankton growth. Dissolved Fe isotope ratios (δ56Fe) have been shown to be useful in helping to quantify the sources and cycling of Fe in the oceans if Fe source signatures and fractionation processes are well understood. Here, this thesis presents data from GEOTRACES section GA10W, and investigate the isotopic signature of sediment-derived dissolved Fe from the South Atlantic margins. My results show that there are both shallow (δ56Fe of -0.2‰) and deep …

The Study On The Photosynthetic Characteristics Of Three Melilotoides Ruthenica Strains, Lili Zhao, Zhaolan Wang, Qingfeng Li, Jiancai Du, Xiaotao Mao

IGC Proceedings (1977-2023)

No abstract provided.

Relationship Of Soil Seed Bank And Vegetation In Hot‐Dry Valley Grassland Of Jin‐Sha River, J. L. Zhang, Y. F. Bi

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Saline‐Alkali Stress On Physiological Characteristics Of Grain Amaranth Seedling, Yuxia Zhang, Yuqin Zhang, Weiwei Tan

IGC Proceedings (1977-2023)

No abstract provided.