Results 91 to 100 of about 12,002 (245)

Comparison of polyhydroxybutyrate content produced by Spirulina sp. under conditions of autotraphic, heterotrophic and mixotrophic cultures [PDF]

بوم‌شناسی آبزیان, 2019
Polyhydroxybutyrate is one of the biodegradable compounds which is produced by cyanobacteria Spirulina sp. In this study, cyanobacteria Spirulina sp isolated from water reservoirs of Guilan province were cultured in Zarrouk medium for 20 days and were ...
Tahereh Nobakht Parashkoh, Akbar Norastehnia, Fatemeh Moradi   +2 more
doaj  

Recent Advances in Developing Artificial Autotrophic Microorganism for Reinforcing CO2 Fixation

Frontiers in Microbiology, 2020
With the goal of achieving carbon sequestration, emission reduction and cleaner production, biological methods have been employed to convert carbon dioxide (CO2) into fuels and chemicals.
Bo Liang, Bo Liang, Yukun Zhao, Jianming Yang, Jianming Yang   +4 more
doaj   +1 more source

Nitrogen flows from European watersheds to coastal marine waters [PDF]

, 2011
Nitrogen flows from European watersheds to coastal marine waters Executive summary Nature of the problem • Most regional watersheds in Europe constitute managed human territories importing large amounts of new reactive nitrogen.
Beusen, Arthur, Billen, Gilles, Bouraoui, Faycal, Curtis, Chris, Ganeshram, Raja, Garnier, Josette, Grizzetti, Bruna, Howarth, Robert, Humborg, Christoph, Johnes, Penny, Kaste, Oyvind, Kortelainen, Pirkko, Lancelot, Christiane, Leip, Adrian, Lepisto, Ahti, Silvestre, Marie, Smedburg, Erik, Voss, Maren   +17 more
core  

Effects of wastewater treatment plant pollution on in-stream ecosystems functions in an agricultural watershed [PDF]

, 2009
We studied the effect of point-source and non-point-source pollution on the retention capacity of the stream and its link with the metabolic state (primary production and respiration) and invertebrates assemblages in a third order Mediterranean stream ...
Boström, Broberg, Butturini, Chapin, Chapra, Crenshaw, Dent, Dorioz, Fisher, Frédéric Julien, Guasch, Haggard, Haggard, Hickey, House, Izagirre, José-Miguel Sánchez-Pérez, Lefebvre, Magali Gerino, Martí, Marzolf, Miserendino, Newbold, Odum, Owens, O’Connor, Pascal Dumas, Paul, Peter Winterton, Philippe Vervier, Prenda, Probst, Rathbun, Ruggiero, Sabine Sauvage, Stream Solute Workshop, Thyssen, Turlan, Turner, Valett, Vitousek, Wang, Young, Éric Maneux   +43 more
core   +4 more sources

Orbital Variability in Grazing Proportion: New Insights From Sedimentary Amino Acid δ15N Records of the Western Equatorial Pacific

AGU Advances, Volume 7, Issue 1, February 2026.
Abstract The carbon sequestration capacity of the biological carbon pump (BCP) is determined by surface ocean carbon fixation and the transportation of fixed carbon to the ocean interior, which is closely linked to the trophic structure of planktonic ecosystem.
Chen Li, Haowen Dang, Jinlong Du, Hongliang Li, Jingjing Zhang, Zhimin Jian   +5 more
wiley   +1 more source

Large D/H variations in bacterial lipids reflect central metabolic pathways [PDF]

, 2009
Large hydrogen-isotopic (D/H) fractionations between lipids and growth water have been observed in most organisms studied to date. These fractionations are generally attributed to isotope effects in the biosynthesis of lipids, and are frequently assumed ...
Gillespie, Aimee L., Sessions, Alex L., Zhang, Xinning   +2 more
core   +2 more sources

The genome of a nonphotosynthetic diatom provides insights into the metabolic shift to heterotrophy and constraints on the loss of photosynthesis

bioRxiv, 2020
Although most of the tens of thousands of diatom species are obligate photoautotrophs, many mixotrophic species can also use extracellular organic carbon for growth, and a small number of obligate heterotrophs have lost photosynthesis entirely.
A. Pendergrass, Wade R. Roberts, Elizabeth C. Ruck, J. Lewis, Andrew J. Alverson   +4 more
semanticscholar   +1 more source

Insights Into the Influence of the Greenland Ice Sheet on Oceanic Macronutrient Dynamics From Decades of Historical Data

Global Biogeochemical Cycles, Volume 40, Issue 2, February 2026.
Abstract Increasing freshwater discharge from the cryosphere has the potential to affect mechanisms that regulate the supply of macronutrients to primary producers in the ocean. Although numerous studies have characterized the biogeochemical effects of freshwater discharge from the Greenland Ice Sheet within fjords, it is unclear to what extent these ...
Xin Huang, Yuanyuan Gu, Hilde Oliver, Dustin Carroll, Thomas Juul‐Pedersen, Lorenz Meire, Mark J. Hopwood   +6 more
wiley   +1 more source

Revealing Seasonal Patterns and Metabolism of Microbial Plankton in a Productive Coastal Upwelling System

Journal of Geophysical Research: Oceans, Volume 131, Issue 2, February 2026.
Abstract Increasing our knowledge about the structure and metabolism of the microbial plankton community in coastal upwelling systems is essential for efficiently managing the resources of these highly productive ecosystems. Here we explore seasonal variations of this community in the NW Iberian coastal upwelling system by measuring variables informing
María López‐Haslett, María Froján, Belén Arbones, Isabel G. Teixeira, Mariña Amo‐Seco, Carmen G. Castro, Francisco G. Figueiras   +6 more
wiley   +1 more source

The compositional and evolutionary logic of metabolism

, 2012
Metabolism displays striking and robust regularities in the forms of modularity and hierarchy, whose composition may be compactly described. This renders metabolic architecture comprehensible as a system, and suggests the order in which layers of that ...
Alberts B, Andreini C, Balche W E, Barker H A, Benner S A, Berge C, Braakman R, Brazelton W J, Buss L W, Collins M D, Copley S D, Dagley S, Darwin C, de Duve C, Doyle J, Eric Smith, Erwin D H, Feist A M, Fenchel T, Fisher R A, Fry I, Gerhart J, Gesteland R F, Gould S J, Gray H B, Guiral M, Haldane J B S, Kallen R G, Kauffman S, Kim J, Lengeler J W, Ljungdahl L, MacKenzie R E, Martin W, Massey L K, Metzler D E, Morowitz H J, Morowitz H J, Morowitz H J, Nelson D L, Nitscke W, Odling-Smee F J, Oparin A I, Petsko G A, Puigbo P, Ragsdale S, Ragsdale S W, Rankama K, Razin S, Redfield A C, Redfield A C, Rogier Braakman, Russell M J, Schrödinger E, Schuster P, Segré D, Shapiro R, Simon H A, Simon H A, Smith E, Srinivasan V, Srinivasan V, Sterner R W, Stryer L, Szent-Gyorgyi A, Tazuya K, Utter M F, Vogels G D, von Wettstein D, Vorholt J A, Waber L J, Wald G, Wilson E B, Wächtershäuser G, Yarus M, Yi L   +75 more
core   +1 more source