Results 51 to 60 of about 6,223 (163)

Isotopic Tracing of Phosphorus Fraction Distribution in Chinese Fir Seedlings with High Phosphorus Efficiency Using 32P Labelling

, 2022
Abstract Purpose The ability of plants to redistribute and transfer phosphorus (P) fractions determines their adaptability to P limitation. However, the mechanisms of P utilization and transport remain unknown in Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) from the perspective of P fraction distribution.
Xianhua Zou, Qingqing Liu, Zhijun Huang, Sitong Chen, Pengfei Wu, Xiangqing Ma   +5 more
openaire   +1 more source

Can fish introductions alter nutrient cycles in previously fishless high-latitude lakes?

Journal of Limnology, 2016
The additional input and enhanced cycling of nutrients derived from introduced fish can be a significant factor altering nutrient dynamics in oligotrophic lakes.
Marco Milardi, Jyrki Lappalainen, Suzanne McGowan, Jan Weckstrom   +3 more
doaj   +1 more source

Influence of Phosphorus and Cell Geometry on the Fractionation of Sulfur Isotopes by Several Species of Desulfovibrio during Microbial Sulfate Reduction

Frontiers in Microbiology, 2017
We investigated the influence of organic substrates and phosphate concentration on the rates of dissimilatory microbial sulfate reduction and the 34S/32S isotopic fractionation produced by several Desulfovibrio species.
Shikma Zaarur, David T. Wang, Shuhei Ono, Tanja Bosak   +3 more
doaj   +1 more source

Climate response to the 8.2 ka event in coastal California

Scientific Reports, 2017
A fast-growing stalagmite from the central California coast provides a high-resolution record of climatic changes synchronous with global perturbations resulting from the catastrophic drainage of proglacial Lake Agassiz at ca. 8.2 ka.
Jessica L. Oster, Warren D. Sharp, Aaron K. Covey, Jansen Gibson, Bruce Rogers, Hari Mix   +5 more
doaj   +1 more source

A Three-Dimensional Model of the Marine Nitrogen Cycle during the Last Glacial Maximum Constrained by Sedimentary Isotopes

Frontiers in Marine Science, 2017
Nitrogen is a key limiting nutrient that influences marine productivity and carbon sequestration in the ocean via the biological pump. In this study, we present the first estimates of nitrogen cycling in a coupled 3D ocean-biogeochemistry-isotope model ...
Christopher J. Somes, Andreas Schmittner, Juan Muglia, Andreas Oschlies   +3 more
doaj   +1 more source

Elemental and Isotopic Yields from T Coronae Borealis: Predictions and Uncertainties

The Astrophysical Journal
T Coronae Borealis (T CrB) is a symbiotic recurrent nova system expected to undergo its next outburst within the next 2 yr. Recent hydrodynamic simulations have predicted the nucleosynthetic yields for both carbon–oxygen (CO) and oxygen–neon (ONe) white ...
Emma Wallace, Christian Iliadis, Sumner Starrfield   +2 more
doaj   +1 more source

Foliar nutrient uptake from dust sustains plant nutrition [PDF]

Biogeosciences
Mineral nutrient uptake from soil through the roots is considered the main nutrition pathway for vascular terrestrial plants. Recently, desert dust was discovered as an alternative nutrient source to plants through direct uptake from dust deposited on ...
A. Lokshin, A. Lokshin, D. Palchan, E. Golan, R. Erel, D. Andronico, A. Gross   +6 more
doaj   +1 more source

Isotopic Differentiation (δ¹⁸O_PO4) of Inorganic Phosphorus among Organic Wastes for Nutrient Runoff Tracing Studies: A Summary of the Literature with Refinement of Livestock Estimates for Grand Lake St. Marys Watershed (Ohio)

Pollutants
The use of stable isotopes, specifically δ18OPO4 ratios, in differentiating potential sources of inorganic phosphorus (e.g., wastewater, septic, wild animals, domesticated animals, livestock, substrates, or commercial fertilizers) to watersheds is a ...
Melanie M. Marshall, Stephen J. Jacquemin, Aubrey L. Jaqueth   +2 more
doaj   +1 more source

Effects of sex and altitude on nutrient, and carbon and nitrogen stable isotope composition of the endangered shrub Baccharis concinna G.M. Barroso (Asteraceae)

Acta Botânica Brasílica
Previous ecological studies of dioecious plant species have found that female plants preferentially occur at lower altitudes where there are typically better nutritional conditions, while male plants often occur in less favorable sites.
G. Wilson Fernandes, Heitor Monteiro Duarte, Fernando A. O. Silveira, Fernando Broetto, Ulrich Lüttge, Heinz Rennenberg   +5 more
doaj   +1 more source

Availability of Phosphorus in Cow Slurry using Isotopic Labelling Technique

, 1988
A pot experiment was conducted to evaluate the influence of cow slurry on P uptake by corn and to estimate the readily available P in the slurry by using an isotopic labelling technique. Water-soluble P in soil was increased and isotopicequilibrium of available P was attained after labelled slurry was mixed thoroughly throughout the soil.
Pongsakul, Pichit, Bertelsen, F., Nielsen, Gunnar Gissel   +2 more
openaire   +1 more source