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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

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Showing 1 to 20 of 41 for “"Nitrogen dynamics"”.

  1. Tropical stony corals host diverse microbial nitrogen dynamics

    Tamasi, TylerMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2019

    … including by cycling physiologically important nitrogen compounds. Nitrogen (N) fixation has been well quantified in corals in accounting for the source of their fixed N, but no complementary loss term had been directly detected. This pathway is important for understanding sources and sinks of …

    woods-hole Repository record

  2. Tropical stony corals host diverse microbial nitrogen dynamics

    Tamasi, Tyler(Tyler James)Massachusetts Institute of Technology2019

    … including by cycling physiologically important nitrogen compounds. Nitrogen (N) fixation has been well quantified in corals in accounting for the source of their fixed N, but no complementary loss term had been directly detected. This pathway is important for understanding sources and sinks of …

    mit Repository record

  3. Characterizing Water and Nitrogen Dynamics in Urban/Suburban Landscapes

    Sun, Hongyan

    utahstate Repository record

  4. Soybean nitrogen dynamics: Nitrogen fixation, yield, and residue decomposition

    Cordova Martinez, S Carolina2018

    <p>Nitrogen (N) a crucial element for plant growth, often limits net primary productivity of agroecosystems. In agricultural systems it is vital to have proper management of N to secure productivity and environmental sustainability. Soybean [Glycine max (L.) Merr.] is the second most important crop …

    iastate Repository record

  5. Nitrogen dynamics in sugarcane fields / by Denis William Isa.

    Isa, Denis William2004

    ghent Repository record

  6. Nitrogen dynamics and biological response to dairy manure application

    Bierer, Andrew M.Virginia Tech2019

    … addresses these concerns, but likely changes the dynamics of nutrient cycling. Comparison of the two application methods has yielded mixed results and warrants further research. Therefore, the objectives of this research were to contrast the surface broadcast and subsurface injection of dairy …

    vt Repository record

  7. Land Cover Influences on Stream Nitrogen Dynamics During Storms

    Stewart, Rebecca M.Virginia Tech2012

    … on the effects of land cover influence on stream nitrogen have focused on base flow conditions or were conducted specifically within urbanized or primarily agricultural watersheds. While these studies have shown relationships between land cover and nitrogen, this relationship and the scale of …

    vt Repository record

  8. Nitrogen Dynamics of the Acacia Senegal Agroforestry System in the Sudan

    Saad, Zakaria Abdalla Mohammed2019

    … of the ASAS that govern the nutrient dynamics, mainly N, and biomass. The effects of limited resources of soil, space and photoperiod on biomass, nodulation and rate of N fixation were investigated. Genetic differences among populations were studied. Progenies of selected high yielding …

    odu Repository record

  9. Soil carbon and nitrogen dynamics affected by tillage and cover cropping

    Gates, Brianne AdeleUniversity of Illinois at Urbana-Champaign2023

    Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms

    uiuc Repository record

  10. Carbon and Nitrogen Dynamics of a Lagoon Salt Marsh in Davenport, California

    Gormley, Mark DThe Graduate School and University Center of The City University of New York2022

    … global biogeochemical cycle of carbon (C) and nitrogen (N). Wetlands are critical contributors to global climate change and atmospheric chemistry since they store as much as 33% of the world’s soil organic carbon (SOC), release more than 20% of the atmospheric methane (CH<sub>4</sub>), and …

    cuny-grad Repository record

  11. Understanding the impact of residue and nitrogen inputs on soil carbon and nitrogen dynamics

    Jesmin, TanjilaUniversity of Illinois at Urbana-Champaign2022

    Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01

    uiuc Repository record

  12. Nitrogen dynamics after site preparation in three loblolly pine plantations on the Virginia Piedmont

    Paganelli, DavidVirginia Polytechnic Institute and State University1986

    … site preparation practices and their effect on nitrogen cycling have been implicated as possible causes of productivity declines on forest sites in Australia and New Zealand. This study was initiated in order to determine the effects of site preparation intensity upon N distribution and …

    vt Repository record

  13. Carbon and Nitrogen Dynamics in High Intensity Minimal Exchange Shrimp (<i>Litopenaeus vannamei</i>) Raceways

    Francis, John Henry2018

    … 2 density treatments, (2) construct carbon and nitrogen budgets to see where the carbon and nitrogen went in the system for all growouts, (3) determine if plastic media had any effects on water quality parameters and shrimp production, (4) determine if plastic media allowed for a nitrifying …

    usm Repository record

  14. Phytoplankton distribution and nitrogen dynamics in the southwest Indian subtropical gyre and Southern Ocean waters

    Thomalla, S JDepartment of Oceanography2001

    Marion Island Oceanographic Survey IV, April-May 1999

    cape-town Repository record

  15. Interactive effects of fire and grazing on soil and forage nitrogen dynamics in a tallgrass prairie

    Winstead, Amy2026

    … ecosystems, yet their combined effects on soil nitrogen (N) dynamics and links to forage quality across heterogeneous landscapes remain incompletely resolved. This thesis examined how fire frequency, grazing, and landscape position interact to regulate N cycling, N retention, and plant–soil …

    ksu Repository record

  16. Using cell size to represent phytoplankton diversity in studies of nitrogen dynamics in the southern Benguela

    Atkins, Josephine ffionDepartment of Oceanography2017

    … and play a central role in the cycling of nitrogen and other elements. Metrics that can adequately represent the biogeochemical processes associated with phytoplankton diversity are needed in order to make use of remote sensing and modeling platforms. A single-value size proxy, effective …

    cape-town Repository record

  17. Carbon and nitrogen dynamics on a forest site receiving continual papermill sludge applications: a soil column study

    Duncan, Carla S.Virginia Tech1992

    … soil changes associated with carbon (C) and nitrogen (N) cycles within the soil/plant system. The C, N, and hydrologic cycles within a soil/sludge system receiving a year-round, daily application of paper mill sludge were studied. Soil samples were collected from three locations on a land …

    vt Repository record

  18. Soil Carbon and Nitrogen Dynamics Across the Hillslope-Riparian Interface in Adjacent Watersheds with Contrasting Cellulosic Biofuel Systems

    Neal, Andrew WilsonVirginia Tech2014

    … affects soil properties and selected soil C and nitrogen (N) dynamics among alternative cellulosic biofuel treatments at the Weyerhaeuser Alabama Cellulosic Biofuel Research site in west-central Alabama. Composite soils for characterization, along with forest floor, were collected at year 1 and …

    vt Repository record

  19. Environmental change impacts on carbon and nitrogen dynamics in soils and vegetation: from global synthesis to local case studies

    Rocci, Katherine, author, Cotrufo, M. Francesca, advisor, Baron, Jill S., committee member, Knapp, Alan K., committee member, Lavallee, Jocelyn M., committee memberColorado State University. Libraries2022

    … (CO2), altered precipitation regimes, and nitrogen (N) fertilization globally using meta-analysis; (2) SOM C and N stoichiometry and distribution in response to nutrient fertilization in globally-distributed grasslands; (3) plant and soil biogeochemical responses to increased precipitation …

    colostate Repository record

  20. Evaluating Crop Physiological and Stand Age-Related Controls Over Soil Carbon and Nitrogen Dynamics In Perennial and Annual Grains

    Woeltjen, Stella2023

    … how the cycling of carbon (C) and fertilizer nitrogen (N) between crop tissues and soil pools is expressed in perennial grains such as intermediate wheatgrass (IWG, Thinopyrum intermedium (Host) Barkworth and Dewey), and whether these processes change within a growing season and across IWG …

    umn Repository record

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