Results 71 to 80 of about 155,598 (201)

Dissolved Organic Phosphorus Utilization by Phytoplankton Reveals Preferential Degradation of Polyphosphates Over Phosphomonoesters [PDF]

Frontiers in Marine Science, 2018
The nutritionally available pool of dissolved organic phosphorus (DOP) supports marine primary productivity in a range of ocean ecosystems but remains poorly resolved. Here, the relative lability of model phosphorus (P) compounds representing the major P(V) bond classes of marine DOP – phosphomonoesters (P-O-C) and phosphoanhydrides (P-O-P) – was ...
Julia M. Diaz, Alisia Holland, James G. Sanders, Karrie Bulski, Douglas Mollett, Douglas Mollett, Chau-Wen Chou, Dennis Phillips, Yuanzhi Tang, Solange Duhamel   +9 more
openaire   +3 more sources

Geoquímica de fósforo como indicadora da qualidade ambiental e dos processos estuarinos do Rio Jaguaribe - costa nordeste oriental brasileira Phosphorus geochemistry as a proxy of environmental estuarine processes at the Jaguaribe River, Northeastern Brazil

Química Nova, 2007
Phosphorus geochemistry as a proxy of environmental estuarine processes at the Jaguaribe River, Northeastern Brazil. Sedimentation of different phosphorus geochemical fractions can characterize the natural or anthropogenic processes dominant in the ...
Rozane Valente Marins, Francisco José de Paula Filho, Carlos Artur Sobreira Rocha   +2 more
doaj   +1 more source

Arsenic in Poultry Litter: Organic Regulations [PDF]

, 2005
Most of the arsenic used as an antibiotic in commercial broiler production ends up in the litter. Using this litter as a soil amendment is not prohibited by the National Organic Program, but 7CFR S205.203(c) of the Rule requires that "the producer must ...
Barbara C. Bellows
core  

Nutrient chemistry of a large, deep lake in subarctic Alaska [PDF]

, 1977
Project Officer Eldor W. Schallock Assessment and Criteria Development Division Corvallis Environmental Research Laboratory Corvallis, Oregon 97330;Corvallis Environmental Research Laboratory Office of Research and Development U. S.
Casper, L. A., LaPerriere, J. D., Tilsworth, T.   +2 more
core   +1 more source

BMP treatment technologies, monitoring needs, and knowledge gaps: status of the knowledge and relevance within the Tahoe Basin [PDF]

, 2005
This Technical memorandum fulfills Task 2 for Agreement 03-495 between El Dorado County and the Office of Water Programs at California State University Sacramento and their co-authors, Bachand & Associates and the University of California Tahoe Research ...
Bachand, P.A.M., Bachand, S., Heyvaert, A   +2 more
core  

Utilization of different dissolved organic phosphorus sources by Symbiodinium voratum in vitro

FEMS Microbiology Ecology, 2019
ABSTRACTThis study examines the physiological responses of the Symbiodiniumvoratum (clade E) to two types of phosphates having different chemical bonds—phosphoesters (C-O-P bonds) and phosphonates (C-P bonds) to explore Symbiodinium cell growth and the molecular perspective of the P utilization process.
Liu, Tian-Tian, Huang, Ping, Liu, Jia-Xing, Ke, Zhi-Xin, Tan, Ye-Hui   +4 more
openaire   +2 more sources

Dissolved organic phosphorus enhances sinking rate of zinc-depleted Thalassiosira weissflogii

, 2023
Abstract Zinc (Zn) is closely associated with diatom growth and silicification and also affects the utilization of dissolved organic phosphorus (DOP) by phytoplankton in the ocean. In this study, we investigated the effects of different phosphorus form (DOP, β-GLP; DIP, Na2HPO4 ) and Zn levels (Zn-depleted, 0.3 pmol L− 1; Zn-replete, 38.6 pmol ...
Jiandi Li, Zhaofei Wang, Hang Yang, Zhenfeng Wang, Fengjiao Liu, Xiaohuang Cheng, Xuguang Huang   +6 more
openaire   +1 more source

Unraveling iron oxides as abiotic catalysts of organic phosphorus recycling in soil and sediment matrices

Nature Communications
In biogeochemical phosphorus cycling, iron oxide minerals are acknowledged as strong adsorbents of inorganic and organic phosphorus. Dephosphorylation of organic phosphorus is attributed only to biological processes, but iron oxides could also catalyze ...
Jade J. Basinski, Sharon E. Bone, Annaleise R. Klein, Wiriya Thongsomboon, Valerie Mitchell, John T. Shukle, Gregory K. Druschel, Aaron Thompson, Ludmilla Aristilde   +8 more
doaj   +1 more source

Phosphorus dynamics in the water of tropical semiarid reservoirs in a prolonged drought period

Acta Limnologica Brasiliensia, 2018
Aim To verify the vertical distribution of phosphorus in the water and to identify the predominant forms of P in the water column for understand the phosphorus dynamics in tropical semiarid reservoirs during a prolonged drought period.
Herika Cavalcante, Fabiana Araújo, Vanessa Becker   +2 more
doaj   +1 more source

Nitrogen, Phosphorus, and Suspended Solids Concentrations in Tributaries to the Great Bay Estuary Watershed in 2011 [PDF]

, 2011
Nitrogen, phosphorus, and sediment loads to the Great Bay Estuary are a growing concern. The Piscataqua Region Estuaries Partnership (PREP) calculates the nitrogen load from tributaries to the Great Bay Estuary for its State of the Estuaries reports ...
New Hampshire Department of Environmental Services, Trowbridge, Philip, Wood, Matthew A.   +2 more
core   +3 more sources