Bibliografías temáticas / Nutrient cycles

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Literatura académica sobre el tema "Nutrient cycles"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 25 de julio de 2025

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Artículos de revistas sobre el tema "Nutrient cycles"

1

Coleman, David C., and E. R. Ingham. "Terrestrial nutrient cycles." Biogeochemistry 5, no. 1 (1988): 3–5. http://dx.doi.org/10.1007/bf02180315.

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Hendrickson, O. Q., and J. Richardson. "Nested forest nutrient cycles: implications for plantation management." Forestry Chronicle 69, no. 6 (1993): 694–98. http://dx.doi.org/10.5558/tfc69694-6.

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Natural forests may be viewed as containing nested nutrient cycles: an "external" cycle mediated by atmospheric processes, a "soil" cycle of litter production and decay, and one or more "plant" cycles involving retranslocation and internal storage pools. The goal of plantation forest management should be to enhance all of these cycles. Stimulating the "external" cycle by adding fertilizer nutrients is likely to increase "soil" and "plant" cycling rates as well. A basic understanding of how these nested cycles are linked can improve the management of nutrients in forest plantations.
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Delgado, J. A., and R. F. Follett. "Carbon and nutrient cycles." Journal of Soil and Water Conservation 57, no. 6 (2002): 455–64. https://doi.org/10.1080/00224561.2002.12457478.

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COMERFORD, N. "Forest Soils and Nutrient Cycles." Soil Science 146, no. 6 (1988): 467. http://dx.doi.org/10.1097/00010694-198812000-00009.

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Liu, Fang, Wei Zhang, and Siqi Li. "Effects of Freeze–Thaw Cycles on Uptake Preferences of Plants for Nutrient: A Review." Plants 14, no. 7 (2025): 1122. https://doi.org/10.3390/plants14071122.

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Freeze–thawing is an abiotic climatic force prevalent at mid-to-high latitudes or high altitudes, significantly impacting ecosystem nitrogen (N) and phosphorus (P) cycling, which is receiving increasing attention due to ongoing global warming. The N and P nutrients are essential for plant growth and development, and the uptake and utilization of these nutrients by plants are closely linked to external environmental conditions. Additionally, the availability of N and P nutrients influences the ecological adaptability of plants. Adapting plants to diverse external environments for the efficient
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Alam, Jamaluddin Fitrah, Tamiji Yamamoto, Tetsuya Umino, Shinya Nakahara, and Kiyonori Hiraoka. "Estimating Nitrogen and Phosphorus Cycles in a Timber Reef Deployment Area." Water 12, no. 9 (2020): 2515. http://dx.doi.org/10.3390/w12092515.

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In an oligotrophic bay, Mitsu Bay, Japan, artificial timber reefs (ATRs) are deployed to increase fish production. In such man-made ecosystems, the biological activities of other organisms as well as the physical structures of ATRs could influence nutrient cycling. A pelagic–benthic coupling model expressing both phosphorus and nitrogen cycling was developed to investigate seasonal variation in the associated nutrients and their annual budget in the ATR areas and the entire bay system. The model consists of equations representing all the relevant physical and biological processes. The model re
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Zaman, Wajid, Asma Ayaz, and Daniel Puppe. "Biogeochemical Cycles in Plant–Soil Systems: Significance for Agriculture, Interconnections, and Anthropogenic Disruptions." Biology 14, no. 4 (2025): 433. https://doi.org/10.3390/biology14040433.

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Biogeochemical cycles are fundamental to the functioning of plant–soil systems, driving the availability and transfer of essential nutrients (like carbon (C), nitrogen (N), phosphorus (P), and sulfur (S)) as well as beneficial elements (like silicon (Si)). These interconnected cycles regulate ecosystem productivity, biodiversity, and resilience, forming the basis of critical ecosystem services. This review explores the mechanisms and dynamics of biogeochemical C, N, P, S, and Si cycles, emphasizing their roles in nutrient/element cycling, plant growth, and soil health, especially in agricultur
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Moore, C. M. "Microbial proteins and oceanic nutrient cycles." Science 345, no. 6201 (2014): 1120–21. http://dx.doi.org/10.1126/science.1258133.

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Arrigo, Kevin R. "Marine microorganisms and global nutrient cycles." Nature 437, no. 7057 (2004): 349–55. http://dx.doi.org/10.1038/nature04159.

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Vasconcelos Fernandes, Tânia, Rabin Shrestha, Yixing Sui, et al. "Closing Domestic Nutrient Cycles Using Microalgae." Environmental Science & Technology 49, no. 20 (2015): 12450–56. http://dx.doi.org/10.1021/acs.est.5b02858.

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Tesis sobre el tema "Nutrient cycles"

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Abell, Jeffrey Thomas. "Giving a damn about DOM in the subtropical North Pacific : quantifying the role of dissolved organic matter in the cycling of carbon, oxygen and nutrients in the upper ocean /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/11060.

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Anderson, Laurence Anthony. "The determination of Redfield ratios for use in global oceanic nutrient cycle models." [Princeton, N.J.] : Princeton University, Dept. of Geological and Geophysical Sciences, Program in Atmospheric and Oceanic Sciences, 1993. http://catalog.hathitrust.org/api/volumes/oclc/75401374.html.

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Crump, Byron C. "Bacterial activity and community structure in the Columbia River estuarine turbidity maxima /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/10989.

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Mielke, Nora. "The role of nitrogen and phosphorus in carbon and nutrient cycling of bryophyte-dominated exosystems." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=231758.

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Bryophytes form an important component of northern vegetation communities. Mosses efficiently capture aerially deposited nutrients, restricting nutrient availability to the soil. Given that key ecosystem processes of northern ecosystems are nutrient-limited, understanding nutrient cycling of the moss layer is key to understanding ecosystem nutrient and C cycling in these systems. However, the role of the moss layer in regulating ecosystem-scale nutrient and C cycling, while potentially significant, is largely unknown. The aim of this thesis is to investigate the effect of the relative availabi
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Neu, Silke, Jörg Schaller, and E. Gert Dudel. "Silicon availability modifies nutrient use efficiency and content, C:N:P stoichiometry, and productivity of winter wheat (Triticum aestivum L.)." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-221008.

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Silicon (Si) is known as beneficial element for graminaceous plants. The importance of Si for plant functioning of cereals was recently emphasized. However, about the effect of Si availability on biomass production, grain yield, nutrient status and nutrient use efficiency for wheat (Triticum aestivum L.), as one of the most important crop plants worldwide, less is known so far. Consequently, we assessed the effect of a broad range of supply levels of amorphous SiO2 on wheat plant performance. Our results revealed that Si is readily taken up and accumulated basically in aboveground vegetative o
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Auguères, Anne-Sophie. "Régulation biotique des cycles biogéochimiques globaux : une approche théorique." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30290/document.

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Les activités anthropiques affectent les cycles biogéochimiques globaux, principalement par l'ajout de nutriments dans les écosystèmes. Il est donc crucial de déterminer dans quelle mesure les cycles biogéochimiques globaux peuvent être régulés. Les autotrophes peuvent réguler les réservoirs de nutriments par la consommation des ressources, mais la majorité des ressources leur sont inaccessibles à l'échelle globale. Par des modèles théoriques, nous avons cherché à évaluer la manière dont les autotrophes répondent à la fertilisation à l'échelle globale et leur capacité à réguler les concentrati
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Oates, Richard Hunter. "Phosphate-mineral interactions and potential consequences for nutrient cycling." Thesis, Online version of original thesis, 2008. http://hdl.handle.net/1912/2395.

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Neu, Silke, Jörg Schaller, and E. Gert Dudel. "Silicon availability modifies nutrient use efficiency and content, C:N:P stoichiometry, and productivity of winter wheat (Triticum aestivum L.)." Nature Publishing Group, 2016. https://tud.qucosa.de/id/qucosa%3A30213.

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Silicon (Si) is known as beneficial element for graminaceous plants. The importance of Si for plant functioning of cereals was recently emphasized. However, about the effect of Si availability on biomass production, grain yield, nutrient status and nutrient use efficiency for wheat (Triticum aestivum L.), as one of the most important crop plants worldwide, less is known so far. Consequently, we assessed the effect of a broad range of supply levels of amorphous SiO2 on wheat plant performance. Our results revealed that Si is readily taken up and accumulated basically in aboveground vegetative o
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9

Klein, Lawrence S. "An Ecosystem Dynamics Model of Monterey Bay, California." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/KleinLS2002.pdf.

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Murphy, Conor. "Investigation of rhizosphere priming effects for N mineralisation in contrasting soils." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=228575.

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In the context of nutrient cycling in soil, plant-mediated mineralisation of carbon (C) and nitrogen (N) is poorly understood. The broad focus of this thesis was to investigate the potential importance of plant-mediated mineralisation (i.e.priming) on C and N mineralisation in soils with contrasting crop productivities. The studies focus on two soils, which had similar chemical and physical properties but contrasting plant productivities relating to their N supply capacity. These soils were used to investigate the potential importance of priming processes in contributing to the contrasting cap
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Libros sobre el tema "Nutrient cycles"

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Andersen, Tom. Pelagic Nutrient Cycles. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-662-03418-7.

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1903-, Leeper G. W., ed. Forest soils and nutrient cycles. Melbourne University Press, 1987.

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Siegfried, Walter R., Pat R. Condy, and Richard M. Laws, eds. Antarctic Nutrient Cycles and Food Webs. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82275-9.

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R, Siegfried W., Condy P. R. 1948-, Laws Richard M, International Council of Scientific Unions. Scientific Committee on Antarctic Research., International Council of Scientific Unions., and SCAR Working Group on Biology., eds. Antarctic nutrient cycles and food webs. Springer-Verlag, 1985.

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Petra, Marschner, and Rengel Zdenko, eds. Nutrient cycling in terrestrial ecosystems. Springer, 2007.

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Ayres, Robert U. Integrated assessment of the grand nutrient cycles. INSEAD, 1997.

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Ayres, Robert U. Industrial metabolism and the grand nutrient cycles. INSEAD, 1992.

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Kline, Thomas C. Nutrient-based resource management. Exxon Valdez Oil Spill Trustee Council, 2007.

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CEC/IUFRO Symposium--Nutrient Uptake and Cycling in Forest Ecosystems (1993 Halmstad, Sweden). Nutrient uptake and cycling in forest ecosystems: Proceedings of the CEC/IUFRO Symposium Nutrient Uptake and Cycling in Forest Ecosystems, Halmstad, Sweden, June, 7-10, 1993. Kluwer Academic, 1995.

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Rentch, James S. Nutrient fluxes for two small forested watersheds: Sixteen-year results from the West Virginia University forest. West Virginia University, Agricultural and Forestry Experiment Station, 1999.

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Capítulos de libros sobre el tema "Nutrient cycles"

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Collinson, A. S. "Nutrients and nutrient cycles." In Introduction to World Vegetation. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-015-3935-7_4.

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Likens, Gene E., and F. Herbert Bormann. "Nutrient Cycles." In Biogeochemistry of a Forested Ecosystem. Springer New York, 1995. http://dx.doi.org/10.1007/978-1-4612-4232-1_6.

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Valiela, Ivan. "Nutrient Cycles in Ecosystems." In Marine Ecological Processes. Springer New York, 2015. http://dx.doi.org/10.1007/978-0-387-79070-1_17.

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Rees, Paul A. "Nutrient and material cycles." In Key questions in ecology: a study and revision guide. CABI, 2021. http://dx.doi.org/10.1079/9781789247572.0065.

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Conley, Daniel J. "Biogeochemical nutrient cycles and nutrient management strategies." In Man and River Systems. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-017-2163-9_10.

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Eck, Mathilde, Oliver Körner, and M. Haïssam Jijakli. "Nutrient Cycling in Aquaponics Systems." In Aquaponics Food Production Systems. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-15943-6_9.

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AbstractIn aquaponics, nutrients originate mainly from the fish feed and water inputs in the system. A substantial part of the feed is ingested by the fish and either used for growth and metabolism or excreted as soluble and solid faeces, while the rest of any uneaten feed decays in the tanks. While the soluble excretions are readily available for the plants, the solid faeces need to be mineralised by microorganisms in order for its nutrient content to be available for plant uptake. It is thus more challenging to control the available nutrient concentrations in aquaponics than in hydroponics.
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Binkley, Dan, Charles T. Driscoll, H. Lee Allen, Philip Schoeneberger, and Drew McAvoy. "Nutrient Cycles and Nutrient Limitations in the South." In Ecological Studies. Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3586-6_6.

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Likens, Gene E. "Nutrient Cycles and Mass Balances." In Biogeochemistry of a Forested Ecosystem. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7810-2_6.

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Valiela, Ivan. "Nutrient Cycles and Ecosystem Stoichiometry." In Marine Ecological Processes. Springer New York, 1995. http://dx.doi.org/10.1007/978-1-4757-4125-4_14.

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Bärlocher, Felix, and Heinz Rennenberg. "Food Chains and Nutrient Cycles." In Ecological Biochemistry. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527686063.ch6.

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Actas de conferencias sobre el tema "Nutrient cycles"

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Floros, Stylianos, Satyajeet S. Bhonsale, Sotiria Gaspari, Simen Akkermans, and Jan F. M. Van Impe. "Modelling the in vitro FooD Digestion SIMulator FooDSIM." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.162389.

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Understanding the complexity of human digestion is critical for designing models that serve as valuable research tools for process simulation and prediction. Due to the high cost of medical intervention & recent advancements in in vitro digestion protocols, increased demand for inexpensive in silico solutions emerges. This study aims to develop a mathematical model that simulates the in vitro dynamic Food Digestion SIMulator (FooDSIM) functionalities via a digital twin approach. Ordinary Differential Equations (ODEs) simulate the system as a series of Continuously Stirred Tank Reactors (CS
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Mand, Jaspreet, Gerrit Voordouw, Heike Hoffmann, and Michael Horne. "Linking Sulfur Cycling and MIC in Offshore Water Transporting Pipelines." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07578.

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Abstract Microbial activities in oil and gas operations cause souring, the production of sulfide by sulfate-reducing bacteria (SRB), and microbiologically-influenced corrosion (MIC). MIC may be especially severe in systems were several different types of fluids are mixed together, as this may provide a variety of nutrients for microbial growth. We have studied samples from an offshore production site and an onshore terminal for separation, crude oil storage, effluent treatment and disposal. We have investigated the samples using chemical analyses, culture-based microbial counts and molecular D
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Zakrzewski, James, John Cosulich, and Earle Hartling. "A Practical Application for the Chemical Treatment of Southern California’S Reclaimed, Title 22 Water for Use as Makeup Water for Recirculating Cooling Water Systems." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98571.

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Abstract Pilot cooling water studies conducted at a Southern California landfill/cogeneration station demonstrated a successful chemical treatment program for recirculating cooling water that used unnitrified, reclaimed, Title 22 water as the primary makeup water source. The constituents in the reclaimed water are supplied by variety of residential and waste water sources resulting in a water quality that may vary to a greater degree than domestic water supplies. This water contains high concentrations of orthophosphate, ammonia, chlorides and suspended solids. The impact of which, under cycle
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Uhlig, David, and Friedhelm von Blanckenburg. "The interaction of organic and geogenic nutrient cycles." In Goldschmidt2021. European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.7080.

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Jau, Yi-Ren, and Shu-Hsing Chen. "The Concept of Energy Flow and Nutrient Cycles in Managing Biocalcification." In The 4th Virtual International Conference on Advanced Research in Scientific Areas. Publishing Society, 2015. http://dx.doi.org/10.18638/arsa.2015.4.1.794.

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Curtin, Tara M., and Keri Geiser. "CULTURAL EUTROPHICATION CAUSES MODIFICATION OF NUTRIENT CYCLES IN THE NEW YORK FINGER LAKES." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-322839.

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James, Jason, and Rob Harrison. "INTERACTION BETWEEN CARBON AND NUTRIENT CYCLES IN DEEP SOILS OF THE PACIFIC NORTHWEST." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-303364.

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Wang, Xinqiang, Zhipeng Wang, Xiaoying Shi, et al. "Feedbacks between Multiple Nutrient Cycles Facilitated the Expansion of Eukaryotic Life at ca. 1.56 Ga." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.2783.

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Peña, Jasquelin, Mike Rowley, Kyounglim Kang, Sharon Bone, and Elizabeth Whelan. "Speciation and reactivity of redox-sensitive metals in wildfire ash: Implications for nutrient and metal cycles." In Goldschmidt 2024. Geochemical Society, 2024. https://doi.org/10.46427/gold2024.24811.

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Chang, Ni-Bin, and Zhemin Xuan. "Exploring the nutrient inputs and cycles in Tampa Bay and coastal watersheds using MODIS images and data mining." In SPIE Optical Engineering + Applications, edited by Wei Gao, Thomas J. Jackson, Jinnian Wang, and Ni-Bin Chang. SPIE, 2011. http://dx.doi.org/10.1117/12.891871.

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Informes sobre el tema "Nutrient cycles"

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Cai, Yingqi. SnRK1-ZmRFWD3-Opaque2: A Nexus of Seed Nutrient Accumulation and Diurnal Cycles. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1716748.

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Shpigel, Muki, Allen Place, William Koven, Oded (Odi) Zmora, Sheenan Harpaz, and Mordechai Harel. Development of Sodium Alginate Encapsulation of Diatom Concentrates as a Nutrient Delivery System to Enhance Growth and Survival of Post-Larvae Abalone. United States Department of Agriculture, 2001. http://dx.doi.org/10.32747/2001.7586480.bard.

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The major bottlenecks in rearing the highly priced gastropod abalone (Haliotis spp.) are the slow growth rate and the high mortality during the first 8 to 12 weeks following metamorphosis and settling. The most likely reason flor these problems is related to nutritional deficiencies in the diatom diet on which the post larvae (PL) feed almost exclusively in captivity. Higher survival and improved growth rate will reduce the considerable expense of hatchery-nursery resisdence time and thereflore the production costs. BARD supported our research for one year only and the support was given to us
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Twining, Benjamin S., Mak A. Saito, Alyson E. Santoro, Adrian Marchetti, and Naomi M. Levine. US National BioGeoSCAPES Workshop Report. Woods Hole Oceangraphic Institution, 2023. http://dx.doi.org/10.1575/1912/29604.

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BioGeoSCAPES (BGS) is an international program being developed to understand controls on ocean productivity and metabolism by integrating systems biology (‘omics) and biogeochemistry (Figure 1). To ensure global input into the design of the BGS Program, countries interested in participating were tasked with holding an organizing meeting to discuss the country-specific research priorities. A United States BGS planning meeting, sponsored by the Ocean Carbon & Biogeochemistry (OCB) Project Office, was convened virtually November 10-12, 2021. The objectives of the meeting were to communicate t
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Sengupta, Sukalyan, Beni Lew, and Lee Blaney. Closing the nutrient cycle through sustainable agricultural waste management. United States Department of Agriculture, 2016. http://dx.doi.org/10.32747/2016.7600040.bard.

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Fisher, Joshua, Richard Phillips, and Tom Evans. Nutrient Cycle Impacts on Forest Ecosystem Carbon Cycling: Improved Prediction of Climate Feedbacks from Coupled C–Nutrient Dynamics from Ecosystem to Regional Scales. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1377633.

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Or, Dani, Shmulik Friedman, and Jeanette Norton. Physical processes affecting microbial habitats and activity in unsaturated agricultural soils. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7587239.bard.

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experimental methods for quantifying effects of water content and other dynamic environmental factors on bacterial growth in partially-saturated soils. Towards this end we reviewed critically the relevant scientific literature and performed theoretical and experimental studies of bacterial growth and activity in modeled, idealized and real unsaturated soils. The natural wetting-drying cycles common to agricultural soils affect water content and liquid organization resulting in fragmentation of aquatic habitats and limit hydraulic connections. Consequently, substrate diffusion pathways to soil
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Baker, Christopher, Amanda Barker, Thomas Douglas, Stacey Doherty, and Robyn Barbato. Seasonal variation in near-surface seasonally thawed active layer and permafrost soil microbial communities. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48754.

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Understanding how soil microbes respond to permafrost thaw is critical to predicting the implications of climate change for soil processes. However, our knowledge of microbial responses to warming is mainly based on laboratory thaw experiments, and field sampling in warmer months when sites are more accessible. In this study, we sampled a depth profile through seasonally thawed active layer and permafrost in the Imnavait Creek Watershed, Alaska, USA over the growing season from summer to late fall. Amplicon sequencing showed that bacterial and fungal communities differed in composition across
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Peters, Erin, Anna Antrim, Alyxandra Cicerrella, et al. Development of innovative cyanophage-based biotechnology for harmful cyanobacterial blooms mitigation : interim progress report. Engineer Research and Development Center (U.S.), 2025. https://doi.org/10.21079/11681/49801.

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Freshwater harmful cyanobacteria blooms (HCBs) are caused by toxin-producing cyanobacteria. Current efforts to prevent and mitigate HCBs include physical and chemical treatments, as well as manipulating the nutrient input and biological ecosystem of impacted water bodies. However, the development of remediation technologies lags behind the increasing frequency, prevalence, and severity of HCBs and their associated adverse health effects and socioeconomic losses. It is difficult to control the side effects of these remediation technologies due to their interactions with non-target species, incl
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Shtienberg, Dan, William Fry, Amos Dinoor, Thomas Zitter, and Uzi Kafkafi. Reduction in Pesticide Use in Plant Disease Control by Integration of Chemical and Non-Chemical Factors. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7613027.bard.

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The long term goal of this research project was to improve control efficiency of Alternaria diseases while reducing fungicide use, by integration of chemical and non-chemical factors. Non-chemical factors were genotype resistance, age-related resistance and fertilizers. The Specific objectives were: 1) To quantify changes in resistance among genotypes and over time in terms of disease development and specific phases of the disease cycle; 2) To quantify the effects of fertilizers applied to the foliage alone, or in combination with a fungicide, on disease development; 3) To quantify the relativ
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Boisclair, Yves R., and Arieh Gertler. Development and Use of Leptin Receptor Antagonists to Increase Appetite and Adaptive Metabolism in Ruminants. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7697120.bard.

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Objectives The original project had 2 major objectives: (1) To determine the effects of centrally administered leptin antagonist on appetite and adaptive metabolism in the sheep; (2) To develop and prepare second-generation leptin antagonists combining high binding affinity and prolonged in vivo half-life. Background Periods of suboptimal nutrition or exaggerated metabolic activity demands lead to a state of chronic energy insufficiency. Ruminants remain productive for a surprisingly long period of time under these circumstances by evoking adaptations sparing available energy and nutrients. Th
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