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2020

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Articles 1201 - 1230 of 3204

Full-Text Articles in Earth Sciences

Characteristic Of Gas Exchange And Chlorophyll Fluorescence Parameters In Leaves Of Lespedeza Davurica, Dong Lin, Huiling Ma, Shihai Lu, Chaoyang Feng Jul 2020

Characteristic Of Gas Exchange And Chlorophyll Fluorescence Parameters In Leaves Of Lespedeza Davurica, Dong Lin, Huiling Ma, Shihai Lu, Chaoyang Feng

IGC Proceedings (1977-2023)

No abstract provided.


Plant Regeneration From In Vitro Stem Explants Of Dianthus Spiculifolius, Yanping Liang, Yan Sun, Qingchuan Yang Jul 2020

Plant Regeneration From In Vitro Stem Explants Of Dianthus Spiculifolius, Yanping Liang, Yan Sun, Qingchuan Yang

IGC Proceedings (1977-2023)

No abstract provided.


Pattern Of Nitrogen Integration And Its Ecological Implications In Clonal Plant Zoysia Japonica, Dezhi Li, Changai Wang Jul 2020

Pattern Of Nitrogen Integration And Its Ecological Implications In Clonal Plant Zoysia Japonica, Dezhi Li, Changai Wang

IGC Proceedings (1977-2023)

No abstract provided.


Response Of Transient Base Level Signals To Erodibility Contrasts In Bedrock Streams, Joshua A. Wolpert Jul 2020

Response Of Transient Base Level Signals To Erodibility Contrasts In Bedrock Streams, Joshua A. Wolpert

LSU Master's Theses

It has long been recognized that bedrock streams gradually adjust their slopes towards topographic steady state, an equilibrium state between rock uplift rate and erosion rate. Tectonic geomorphology studies often analyze stream profiles for clues of this adjustment, which can initiate from changes in tectonic and climatic forcings. The stream power incision model, the most widely utilized framework with which to interpret bedrock stream profiles, predicts that streams perturbed from topographic steady state by changes in bedrock erodibility or uplift rate adjust their slopes to return to topographic steady state through upstream propagating waves of incision, or knickpoints. Under the …


Effect Of Different Culture Medium On Subculture And Differentiation Of Alfalfa Anther Callus, Zenghong Li, Bo Zhang, Aiping Chen, Yupeng Luo Jul 2020

Effect Of Different Culture Medium On Subculture And Differentiation Of Alfalfa Anther Callus, Zenghong Li, Bo Zhang, Aiping Chen, Yupeng Luo

IGC Proceedings (1977-2023)

No abstract provided.


Physiological Response To Soil Drought Stress For Two Ornamental Grasses, Lanjing Kong, Zhiguo Zhang Jul 2020

Physiological Response To Soil Drought Stress For Two Ornamental Grasses, Lanjing Kong, Zhiguo Zhang

IGC Proceedings (1977-2023)

No abstract provided.


Spatial Distribution, Biomass, And Soil Seed Bank Of A Naturalized Population Of Alfalfa In Native Mixed-Grass Prairie, Lan Xu, A. Boe, R. N. Gates, P. S. Johnson, Y. Zhang Jul 2020

Spatial Distribution, Biomass, And Soil Seed Bank Of A Naturalized Population Of Alfalfa In Native Mixed-Grass Prairie, Lan Xu, A. Boe, R. N. Gates, P. S. Johnson, Y. Zhang

IGC Proceedings (1977-2023)

No abstract provided.


Genetic Polymorphism By Rapd Of Leymus Chinensis, X. J. Kong, Z. W. Liang, M. Liu, H. Y. Ma Jul 2020

Genetic Polymorphism By Rapd Of Leymus Chinensis, X. J. Kong, Z. W. Liang, M. Liu, H. Y. Ma

IGC Proceedings (1977-2023)

No abstract provided.


Changes In Plant Communities By Grazing In Northern Mongolian Grassland And Assessment Of Nomads, K. Kakinuma, S. Takatsuki Jul 2020

Changes In Plant Communities By Grazing In Northern Mongolian Grassland And Assessment Of Nomads, K. Kakinuma, S. Takatsuki

IGC Proceedings (1977-2023)

No abstract provided.


Investigation On Environmental Factors Influencing Distribution Of Plant Species (Case Study: Damghan Region Of Semnan Province), H. Joneidi, Hossein Azarnivand, S. H. Nikoo, M. Zarechahuki Jul 2020

Investigation On Environmental Factors Influencing Distribution Of Plant Species (Case Study: Damghan Region Of Semnan Province), H. Joneidi, Hossein Azarnivand, S. H. Nikoo, M. Zarechahuki

IGC Proceedings (1977-2023)

No abstract provided.


Effect On Artemisia Frigida Module Under Different Stocking Rates In The Desert Steppe, Inner Mongolia, S. Y. Jiao, G. D. Han, M. J. Wang, Z. W. Wang, C. L. Li, Z. H. Xue, X. H. Yang Jul 2020

Effect On Artemisia Frigida Module Under Different Stocking Rates In The Desert Steppe, Inner Mongolia, S. Y. Jiao, G. D. Han, M. J. Wang, Z. W. Wang, C. L. Li, Z. H. Xue, X. H. Yang

IGC Proceedings (1977-2023)

No abstract provided.


Effect Of Intercropping Forages On Root Growth Of Fruit Tree And Orchard Ecology, Yibin Huang, Weibin Pan, Zhaoyang Ying, En Chen, Boqi Weng Jul 2020

Effect Of Intercropping Forages On Root Growth Of Fruit Tree And Orchard Ecology, Yibin Huang, Weibin Pan, Zhaoyang Ying, En Chen, Boqi Weng

IGC Proceedings (1977-2023)

No abstract provided.


Classification Of Herbaceous Communities In The Subalpine Meadow On Mt . Xiaowutai, Xiaoxia Huang, Kejian He Jul 2020

Classification Of Herbaceous Communities In The Subalpine Meadow On Mt . Xiaowutai, Xiaoxia Huang, Kejian He

IGC Proceedings (1977-2023)

No abstract provided.


The Dynamic Changes Of Biodiversity In Hongsongwa Nature Reserve, Tiran Huang, Lianfang Li, Haifeng Liu, Jianguang Pang Jul 2020

The Dynamic Changes Of Biodiversity In Hongsongwa Nature Reserve, Tiran Huang, Lianfang Li, Haifeng Liu, Jianguang Pang

IGC Proceedings (1977-2023)

No abstract provided.


The Photosynthetic Characteristics Of Hemarthria Compressa In Different Seasons, Huijun Huang, Chunhua Yang, Lingzhi Chen, Xiantao Fu, Zhisong Tang Jul 2020

The Photosynthetic Characteristics Of Hemarthria Compressa In Different Seasons, Huijun Huang, Chunhua Yang, Lingzhi Chen, Xiantao Fu, Zhisong Tang

IGC Proceedings (1977-2023)

No abstract provided.


Distribution Of Vegetation Types In Bayinbuluk Alpine Grassland, Y. K. Hu, K. H. Li, W. L. Li, G. G. Gao, Y. M. Gong Jul 2020

Distribution Of Vegetation Types In Bayinbuluk Alpine Grassland, Y. K. Hu, K. H. Li, W. L. Li, G. G. Gao, Y. M. Gong

IGC Proceedings (1977-2023)

No abstract provided.


Cytologic Observations Of Sterility In Interspecific F1 Hybrid From Leymus Chinensis And Leymus Cinereus, Jianhua Hou, Jinfeng Yun Jul 2020

Cytologic Observations Of Sterility In Interspecific F1 Hybrid From Leymus Chinensis And Leymus Cinereus, Jianhua Hou, Jinfeng Yun

IGC Proceedings (1977-2023)

No abstract provided.


Ecological Characteristics Of 3 Salt Grasses Of Saline And Alkaline Habitats Of Northern Gorgan, Iran, S. A. Hosseini, G. A. Abarsaji, M. Mesdaghi Jul 2020

Ecological Characteristics Of 3 Salt Grasses Of Saline And Alkaline Habitats Of Northern Gorgan, Iran, S. A. Hosseini, G. A. Abarsaji, M. Mesdaghi

IGC Proceedings (1977-2023)

No abstract provided.


Citric Acid Accumulation Of Puccinellia Tenuiflorais A Specific Adaptive Response To Alkaline Stress, Hong Yan, Shangjun Yin, Wei Zhao, Decheng Shi Jul 2020

Citric Acid Accumulation Of Puccinellia Tenuiflorais A Specific Adaptive Response To Alkaline Stress, Hong Yan, Shangjun Yin, Wei Zhao, Decheng Shi

IGC Proceedings (1977-2023)

No abstract provided.


Responses Of Photosynthetic Rate Of Lucerne And The Mechanisms Under Cutting At Different Water Availabilities, Shubin He, Huimin Yang, Guoli Liu, Zhilong Zhang Jul 2020

Responses Of Photosynthetic Rate Of Lucerne And The Mechanisms Under Cutting At Different Water Availabilities, Shubin He, Huimin Yang, Guoli Liu, Zhilong Zhang

IGC Proceedings (1977-2023)

No abstract provided.


Monitoring Residual Soil Moisture And Its Association To The Long-Term Variability Of Rainfall Over The Upper Blue Nile Basin In Ethiopia, Getachew Ayehu, Tsegaye Tadesse, Berhan Gessesse Jul 2020

Monitoring Residual Soil Moisture And Its Association To The Long-Term Variability Of Rainfall Over The Upper Blue Nile Basin In Ethiopia, Getachew Ayehu, Tsegaye Tadesse, Berhan Gessesse

National Drought Mitigation Center: Faculty Publications

Monitoring soil moisture and its association with rainfall variability is important to comprehend the hydrological processes and to set proper agricultural water use management to maximize crop growth and productivity. In this study, the European Space Agency’s Climate Change Initiative (ESA CCI) soil moisture product was applied to assess the dynamics of residual soil moisture in autumn (September to November) and its response to the long-term variability of rainfall in the Upper Blue Nile Basin (UBNB) of Ethiopia from 1992 to 2017. The basin was found to have autumn soil moisture (ASM) ranging from 0.09–0.38 m3/m3, …


Preservation Of Latest Cretaceous (Maastrichtian) - Paleocene Frogs (Eorubeta Nevadensis) Of The Sheep Pass Formation Of East-Central Nevada And Implications For Paleogeography Of The Nevadaplano, Joshua W. Bonde, Peter A. Druschke, Richard P. Hilton, Amy C. Henrici, Stephen M. Rowland Jul 2020

Preservation Of Latest Cretaceous (Maastrichtian) - Paleocene Frogs (Eorubeta Nevadensis) Of The Sheep Pass Formation Of East-Central Nevada And Implications For Paleogeography Of The Nevadaplano, Joshua W. Bonde, Peter A. Druschke, Richard P. Hilton, Amy C. Henrici, Stephen M. Rowland

Geoscience Faculty Research

Here we report on exceptional preservation of remains of the frog Eorubeta nevadensis in deposits of the Sheep Pass Formation, ranging from Late Cretaceous to Eocene, in the south Egan Range, Nevada. This formation represents a lacustrine basin within the Sevier retroarc hinterland. The formation is subdivided into six members (A–F); of interest here are members B and C. The base of member B is ?uppermost Cretaceous-Paleocene, while member C is Paleocene. Member B frogs are preserved in three taphonomic modes. Mode 1 frogs are nearly complete and accumulated under attritional processes, with frogs settling on microbial mats, as evidenced …


Ecological Characteristics Of Halophytes In The Arid Areas, Wenjun Han, Kunio Hamamura Jul 2020

Ecological Characteristics Of Halophytes In The Arid Areas, Wenjun Han, Kunio Hamamura

IGC Proceedings (1977-2023)

No abstract provided.


Response Of Activated Oxygen Metabolism To Water Stress In Different Drought‐Tolerant Alfalfa (Medicago Sativa) At Seedling Stage, Ruihong Han Jul 2020

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 Jul 2020

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 Jul 2020

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 Jul 2020

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 Jul 2020

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.


Geoscientific Investigations Of Polymetallic Nodules And Host Sediments From The Central Indian Ocean Basin, Chris Pesso Jul 2020

Geoscientific Investigations Of Polymetallic Nodules And Host Sediments From The Central Indian Ocean Basin, Chris Pesso

Manipal Institute of Technology, Manipal Theses and Dissertations

This report embodies the results of the research carried out on the polymetallic nodules, host sediments and pumice of the Central Indian Ocean Basin (CIOB). An extensive study has been conducted to best describe the morphological, geotechnical (water content, porosity, density, etc.), mineralogical and geochemical properties of the CIOB nodules and pumice. Morphological aspects of nodules such as size, shape, surface texture and their variations have been studied in detail. An attempt was made to classify the CIOB pumice based on their shape by applying Zingg’s method and Sneed and Folks method. The physical properties of the host sediments were …


A Process-Based Approach To Evaluating The Role Of Organic Ligands In Trace Metal Cycling In The Marine Environment, Travis Mellett Jul 2020

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 …