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Articles 10201 - 10230 of 17813
Full-Text Articles in Entire DC Network
Response Of Activated Oxygen Metabolism To Water Stress In Different Drought‐Tolerant Alfalfa (Medicago Sativa) At Seedling Stage, Ruihong Han
IGC Proceedings (1977-2023)
No abstract provided.
Effect Of Patch Size Of Metacommunity On Species Diversity In Leymus Chinensis Meadow In The Songnen Plains Of China, Dayong Han, Yunfei Yang, Jiandong Li
Effect Of Patch Size Of Metacommunity On Species Diversity In Leymus Chinensis Meadow In The Songnen Plains Of China, Dayong Han, Yunfei Yang, Jiandong Li
IGC Proceedings (1977-2023)
No abstract provided.
The Successional Dynamic Changing Process Of Vegetation Steppe From Central Asia And Mongolian Pasture, Erdenejav Guriin Proffessor
The Successional Dynamic Changing Process Of Vegetation Steppe From Central Asia And Mongolian Pasture, Erdenejav Guriin Proffessor
IGC Proceedings (1977-2023)
No abstract provided.
Biological Soil Crust Under Shrubs And Its Topsoil Properties In The Process Of Dune Vegetation Restoration In The Horqin Sandy Grassland, Inner Mongolia, Yirui Guo, Halin Zhao, Xiaoan Zuo
Biological Soil Crust Under Shrubs And Its Topsoil Properties In The Process Of Dune Vegetation Restoration In The Horqin Sandy Grassland, Inner Mongolia, Yirui Guo, Halin Zhao, Xiaoan Zuo
IGC Proceedings (1977-2023)
No abstract provided.
The Comparison Of Photosynthetic Physiological Characteristics Between Leymus Chinensis And Leymus Secalinus In The Songnen Plains, R. Guo, Yunfei Yang
The Comparison Of Photosynthetic Physiological Characteristics Between Leymus Chinensis And Leymus Secalinus In The Songnen Plains, R. Guo, Yunfei Yang
IGC Proceedings (1977-2023)
No abstract provided.
A Process-Based Approach To Evaluating The Role Of Organic Ligands In Trace Metal Cycling In The Marine Environment, Travis Mellett
A Process-Based Approach To Evaluating The Role Of Organic Ligands In Trace Metal Cycling In The Marine Environment, Travis Mellett
USF Tampa Graduate Theses and Dissertations
In addition to control by major nutrient elements (nitrogen, phosphorous, and silicon) growth and community composition of marine phytoplankton is also regulated by trace element nutrients (iron, copper, manganese, zinc, cobalt, nickel, and cadmium). Of these, iron is the most influential in the modern ocean, regulating phytoplankton growth and carbon export in high-nutrient low-chlorophyll regimes and exerting an important control on the marine nitrogen cycle through its role in di-nitrogen fixation. The distributions of these metals has the capacity to control primary production and phytoplankton community composition through differences in cellular quotas or metal sensitivities amongst species. The relationship between …
Water Relations In Native Trees, Northeastern Mexico, Humberto González, I. A. Molina, I. C. Silva, M. V. Gómez, R. G. Ramírez
Water Relations In Native Trees, Northeastern Mexico, Humberto González, I. A. Molina, I. C. Silva, M. V. Gómez, R. G. Ramírez
IGC Proceedings (1977-2023)
No abstract provided.
Effects Of Different Utilization Levels On Species Richness Changes In Saral Grassland, Kurdistan Province, S. Gholinejad, M. Vafakhah, S. A. R. Mousavi
Effects Of Different Utilization Levels On Species Richness Changes In Saral Grassland, Kurdistan Province, S. Gholinejad, M. Vafakhah, S. A. R. Mousavi
IGC Proceedings (1977-2023)
No abstract provided.
Behavior Of Medicinal Species Of Cichorium Intybus Against Salinity On Different Developmental Stages, M. Ghavam Arabani, Hossein Azarnivand, A. Tavili
Behavior Of Medicinal Species Of Cichorium Intybus Against Salinity On Different Developmental Stages, M. Ghavam Arabani, Hossein Azarnivand, A. Tavili
IGC Proceedings (1977-2023)
No abstract provided.
Pystprism: Tools For Voxel-Based Space–Time Prisms, Rebecca Loraamm, Joni A. Downs, James Anderson, David S. Lamb
Pystprism: Tools For Voxel-Based Space–Time Prisms, Rebecca Loraamm, Joni A. Downs, James Anderson, David S. Lamb
School of Geosciences Faculty and Staff Publications
The observed movements of humans and animals are realizations of complex spatiotemporal processes. Recent advances in location-aware technologies have rendered trajectory data ubiquitous. Examining the sequenced, instantaneous locations found in movement trajectory data for information reconstructing the location or state of the mover between observed points comprises a primary focus in Time Geography and related disciplines. The PySTPrism toolbox introduced in this paper provides a straightforward and open-source implementation of the Probabilistic Space Time Prism, in addition to related tools from Time Geography. PySTPrism is implemented in Python using the ArcPy module in ArcGIS Pro Desktop.
Using Soil Geospatial Properties And Environments To Explore Microbial Diversity, Sharon Faye Smith
Using Soil Geospatial Properties And Environments To Explore Microbial Diversity, Sharon Faye Smith
Graduate Theses and Dissertations
Soil microorganisms help maintain nutrient cycling, control carbon sequestration, impact plant productivity, and influence several soil chemical and physical properties; yet, the processes that control the microbial composition of soil and how environmental changes may affect the composition and activity of these organisms at different scales remains a difficult and intriguing puzzle for soil scientists, ecologists, and modelers. Wetlands are endangered and important ecosystems that provide several services, which are directly linked to soil function. However, few wetland assessments consider the soil environment and microbial ecology. Linking soil microbial community composition and distribution patterns to soil physio-chemical properties would provide …
Environmental Influences On Tree-Driven Karst Bedrock Physical Weathering, Cole Robert Jimerson
Environmental Influences On Tree-Driven Karst Bedrock Physical Weathering, Cole Robert Jimerson
Graduate Theses and Dissertations
The role of tree roots as stressors that contribute to physical weathering processes and thus soil generation remains an open question in critical zone science. While evidence suggests roots may be able to damage rock by accessing pre-existing fractures, where they can expand due to water uptake or generate forces on rock in response to wind gusts, these processes have not been investigated in temperate karst regions until now. I monitored forces at the root-rock interface for an American elm and Hackberry tree between September 2019 and May 2020. I used piezoelectric force sensors to determine if differences in species, …
The Influence Of Human Disturbance On Wildlife Use Of A Highway In South Texas, Thomas J. Yamashita
The Influence Of Human Disturbance On Wildlife Use Of A Highway In South Texas, Thomas J. Yamashita
Theses and Dissertations
Roads can greatly impact wildlife. Wildlife vehicle collisions contribute to population declines while disturbance from human activity may prevent wildlife from using areas around roads. The construction of mitigation structures may lessen these effects through fine scale modification of animal use of roadside areas. In this thesis, how the construction of wildlife mitigation structures impacted the fine scale distribution of wildlife on State Highway 100 in Cameron County, Texas was examined. Spatial and temporal scale may also influence these relationships. The relationship between human activity and wildlife activity around the highway was explored and how the distribution of wildlife road …
Analysis Of The Facilitative Interaction Between Batis Maritima And Avicennia Germinans As A Mangrove Restoration Strategy, Javier R. Navarro
Analysis Of The Facilitative Interaction Between Batis Maritima And Avicennia Germinans As A Mangrove Restoration Strategy, Javier R. Navarro
Theses and Dissertations
The multiple experiments conducted in an Avicennia germinans forest in Laguna Vista, TX was focused on determining if facilitation theory could explain the behavior observed between the herbaceous halophyte Batis maritima and A. germinans. I hypnotized that a positive interaction exists but through which mechanisms of facilitation I did not know. The overarching theme of the study is the presence or absence of B. maritima. Facilitation theory tells us that positive interactions are most often found under stressful conditions such as those on the coastal tidal flat of the Laguna Madre. Locally B. maritima has been found to …
Earthworm Dynamics In Tallgrass Prairies In The Ozark Highlands Region Of Northwest Arkansas, Carlee Hensley
Earthworm Dynamics In Tallgrass Prairies In The Ozark Highlands Region Of Northwest Arkansas, Carlee Hensley
Graduate Theses and Dissertations
Tallgrass prairie was a historic and is presently a unique and endangered natural ecosystem throughout the Ozark Highlands region in the mid-southern United States. Tallgrass prairies have been disturbed for agricultural production and/or urban expansion; thus, as a result, efforts have been undertaken to reclaim areas previously used for agricultural production to mitigate the loss of tallgrass prairies. Limited research exists on earthworm dynamics in mounded tallgrass prairies or prairie restorations, particularly in the Ozark Highlands region of northwest Arkansas. The objectives of this study were to i) evaluate the effects of soil moisture regime (SMR; aquic and udic), landscape …
Effects Of Terrestrial Weathering On Rare Earth Element Concentrations And Sulfur Isotopic Signatures Of Carbonaceous And Ordinary Chondrites, Ruby Virginia Patterson
Effects Of Terrestrial Weathering On Rare Earth Element Concentrations And Sulfur Isotopic Signatures Of Carbonaceous And Ordinary Chondrites, Ruby Virginia Patterson
Graduate Theses and Dissertations
Understanding the effects of weathering of chondrites is essential to gaining accurate and useful information about the formation of our solar system, as well as a more detailed account of the mobilization of chondritic compounds when they encounter terrestrial conditions. Elemental concentrations and stable isotope analyses of chondrites, considered to be the most primordial material in the solar system, are two tools which help unlock the weathering patterns of these specimens when they enter the earth system. However, it is not currently known exactly how time spent in the field alters rare earth element (REE) concentration or δ34S signatures within …
Which Vegetation Sampling Approach Is More Efficient For A Rangeland Inventory?, Gh. Ghanbarian, M. Mesdaghi, H. Barani, M. Azimmohseni
Which Vegetation Sampling Approach Is More Efficient For A Rangeland Inventory?, Gh. Ghanbarian, M. Mesdaghi, H. Barani, M. Azimmohseni
IGC Proceedings (1977-2023)
No abstract provided.
Presentation Of Diversity, Life Forms And Chorology Of Plant Species In Rangelands Of Jahrom, Gh. Ghanbarian, E. Jafari, A. Hatami, M. Tayebi Khorrami
Presentation Of Diversity, Life Forms And Chorology Of Plant Species In Rangelands Of Jahrom, Gh. Ghanbarian, E. Jafari, A. Hatami, M. Tayebi Khorrami
IGC Proceedings (1977-2023)
No abstract provided.
Analysis Of C‐Banding And Karyotype Of Chromosome Of Two Galega Species, Hongwen Gao, Xinyu Zhang, Zan Wang
Analysis Of C‐Banding And Karyotype Of Chromosome Of Two Galega Species, Hongwen Gao, Xinyu Zhang, Zan Wang
IGC Proceedings (1977-2023)
No abstract provided.
Obstacles Of Determining Compensation In Grassland Ecological Values, Zhiyi Gai, Xiufang Gao
Obstacles Of Determining Compensation In Grassland Ecological Values, Zhiyi Gai, Xiufang Gao
IGC Proceedings (1977-2023)
No abstract provided.
Application Of Analytical Hierarchy Process (Ahp) In Priority Classification Of Utilization Measurement Methods In Agropyrun Trichophrum Stands In Upland Grasslands Of Iran, Fazel Amiri
IGC Proceedings (1977-2023)
No abstract provided.
Assessment Of Important Environmental Factors Affecting Agropyron Trichophrum Establishment By Using An Ordination Method, Fazel Amiri, M. R. Chaichi, T. Tabatabai
Assessment Of Important Environmental Factors Affecting Agropyron Trichophrum Establishment By Using An Ordination Method, Fazel Amiri, M. R. Chaichi, T. Tabatabai
IGC Proceedings (1977-2023)
No abstract provided.
Inter‐Annual Dynamics Of Grassland Yields And Assessment Of Herbage Supply In The Headwater Region Of Three Rivers Over 18 Years, Jiangwen Fan, Junbang Wang, Zhouqi Chen, Huaping Zhong, Quanqin Shao, Jiyuan Liu, Wenyan Zhang
Inter‐Annual Dynamics Of Grassland Yields And Assessment Of Herbage Supply In The Headwater Region Of Three Rivers Over 18 Years, Jiangwen Fan, Junbang Wang, Zhouqi Chen, Huaping Zhong, Quanqin Shao, Jiyuan Liu, Wenyan Zhang
IGC Proceedings (1977-2023)
No abstract provided.
Dynamics Of Leymus Chinensis And Hierochloe Glabrain Grassland Plantings Within The Songnen Plains Of China, Guangzhi Fan, Yunfei Yang
Dynamics Of Leymus Chinensis And Hierochloe Glabrain Grassland Plantings Within The Songnen Plains Of China, Guangzhi Fan, Yunfei Yang
IGC Proceedings (1977-2023)
No abstract provided.
Testing The Neutral Theory Of Plant Communities In Subalpine Meadow, Xiaoguang Du, Shurong Zhou
Testing The Neutral Theory Of Plant Communities In Subalpine Meadow, Xiaoguang Du, Shurong Zhou
IGC Proceedings (1977-2023)
No abstract provided.
Soil-Plant Nutrient Cycling In Old Cocoa Farms In A Part Of South Western Nigerian Forest Belt, Olusola Afolayan
Soil-Plant Nutrient Cycling In Old Cocoa Farms In A Part Of South Western Nigerian Forest Belt, Olusola Afolayan
Tanzania Journal of Science
Apart from pests and diseases, a vital issue in the early mature of cocoa crop in Nigeria is soil nutrient degradation in relation to the ageing of the farms and annual mining of nutrients via yield harvests. Indigenous production of cocoa in southwest Nigeria has been on without fertilizer applications. This is the basis for the reduction average lifespan and productive years of the plantation. The aim of this study was to quantify the rates of soil nutrient losses via cycling channels in old cocoa farm using cocoa beans, leaves, litters, and pod husks in south western Nigeria forest belt. …
Variability Of Selected Mineral Contents In Marine Fish From Local Markets In Tanzania, Stella Shija, Matobola Mihale, Daniel Shilla
Variability Of Selected Mineral Contents In Marine Fish From Local Markets In Tanzania, Stella Shija, Matobola Mihale, Daniel Shilla
Tanzania Journal of Science
Mineral contents (K, Na, Ca and Mg) in selected marine fish species (Alectis ciliaris, Lethrinus harak, Rastrelliger kanagurta and Siganus canaliculatus) from local fish markets were analysed in wet and dry seasons. The processing methods (frying and boiling) were also assessed for their influence on the mineral contents. Samples were randomly collected from Tanga, Bagamoyo, Dar es Salaam and Mtwara seaports, analysed using established methods and determined by Graphite Furnace Atomic Absorption Spectrometry. Mean mineral contents in individual and all analysed fish species were high during dry season compared to wet season except Ca and the difference was statistically significant …
Effects Of Grazing On Reproductive Characteristics Of Stipabreviflora In Desert Steppe, Lixia Du, Qingfeng Li
Effects Of Grazing On Reproductive Characteristics Of Stipabreviflora In Desert Steppe, Lixia Du, Qingfeng Li
IGC Proceedings (1977-2023)
No abstract provided.
Long‐Term Cattle Grazing Affected Specific Leaf Area And Its Components In Two Range Plant Species, Xuejun Dong, Paul Nyren, Bob Patton, Brian Kreft, Anne Nyren
Long‐Term Cattle Grazing Affected Specific Leaf Area And Its Components In Two Range Plant Species, Xuejun Dong, Paul Nyren, Bob Patton, Brian Kreft, Anne Nyren
IGC Proceedings (1977-2023)
No abstract provided.
Photosynthesis And Soil Respiration From A Mixed‐Grass Prairie: Effects Of Grazing And Drought, Xuejun Dong, Paul Nyren, Bob Patton, Guojie Wang, Brian Kreft, Anne Nyren, Ryan Limb, Don Kirby, Larry Cihacek
Photosynthesis And Soil Respiration From A Mixed‐Grass Prairie: Effects Of Grazing And Drought, Xuejun Dong, Paul Nyren, Bob Patton, Guojie Wang, Brian Kreft, Anne Nyren, Ryan Limb, Don Kirby, Larry Cihacek
IGC Proceedings (1977-2023)
No abstract provided.