LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 15

Search options

  1. Book ; Online: Oxygen Isotopes of Inorganic Phosphate in Environmental Samples

    Adu-Gyamfi, Joseph / Pfahler, Verena

    Purification and Analysis

    2022  

    Author's details edited by Joseph Adu-Gyamfi, Verena Pfahler
    Keywords Environmental management ; Environmental monitoring ; Water ; Hydrology ; Agriculture ; Pollution ; Inorganic chemistry
    Subject code 333.7
    Language English
    Size 1 Online-Ressource (VII, 64 p. 9 illus., 6 illus. in color)
    Edition 1st ed. 2022
    Publisher Springer International Publishing ; Imprint: Springer
    Publishing place Cham
    Document type Book ; Online
    HBZ-ID HT021361058
    ISBN 978-3-030-97497-8 ; 9783030974961 ; 9783030974985 ; 9783030974992 ; 3-030-97497-9 ; 3030974960 ; 3030974987 ; 3030974995
    DOI 10.1007/978-3-030-97497-8
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  2. Book ; Online: Oxygen Isotopes of Inorganic Phosphate in Environmental Samples

    Adu-Gyamfi, Joseph / Pfahler, Verena

    Purification and Analysis

    2022  

    Keywords Environmental management ; Environmental monitoring ; Analytical chemistry ; Hydrology & the hydrosphere ; Agricultural science ; Pollution & threats to the environment ; Environment ; Phosphorus ; Water Quality and Groundwater ; Stable Isotopes ; Protocol and Environmental P cycle ; Fertilizer and Microbes ; Water Quality and Pollution
    Language 0|e
    Size 1 electronic resource (64 pages)
    Publisher Springer Nature
    Publishing place Cham
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT021614026
    ISBN 9783030974978 ; 3030974979
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Article: A review of phosphate oxygen isotope values in global bedrocks: Characterising a critical endmember to the soil phosphorus system

    Smith, Andrew C / Pfahler, Verena / Tamburini, Federica / Blackwell, Martin S. A / Granger, Steven J

    Journal of plant nutrition and soil science. 2021 Feb., v. 184, no. 1

    2021  

    Abstract: Understanding the phosphate oxygen isotope (δ¹⁸O‐PO₄) composition of bedrock phosphate sources is becoming ever more important, especially in areas of soil research which use this isotope signature as a proxy for biological cycling of phosphorus (P). For ...

    Abstract Understanding the phosphate oxygen isotope (δ¹⁸O‐PO₄) composition of bedrock phosphate sources is becoming ever more important, especially in areas of soil research which use this isotope signature as a proxy for biological cycling of phosphorus (P). For many of these studies, obtaining a sample of the source bedrock or applied mineral fertiliser for isotope analysis is impossible; meaning there is now a demand for a comprehensive characterisation of global bedrock δ¹⁸O‐PO₄ to support this work. Here we compile δ¹⁸O‐PO₄ data from a wide range of global bedrocks, including 56 new values produced as part of this study and a comprehensive overview of those within the previously existing literature. We present δ¹⁸O‐PO₄ data from the range of major phosphatic lithologies alongside as much metadata for the samples as could be gathered. Much of the data comes from bedrocks of marine sedimentary origin (< 1 Ma = > +22‰, > 540 Ma = ≈ +12‰), but we also present data from bedrocks associated with guano (range: +19.5 to +15‰) and igneous deposits (range: +12 to –0.8‰), both of which have distinct δ¹⁸O‐PO₄ signatures due to their formation mechanisms. We show that where repeat measurements of the same formation have been undertaken, regardless of method or exact sample location, there is an average within formation error of ± 1.25‰. This is important, as is constitutes a reasonable level of uncertainty for phosphorus cycling studies which need to estimate bedrock δ¹⁸O‐PO₄ composition based on the literature. In combination, this data set presents 284 δ¹⁸O‐PO₄ values from 56 countries; a comprehensive starting point for researchers interested in understanding bedrock end member δ¹⁸O‐PO₄.
    Keywords animal manures ; bedrock ; data collection ; lithology ; metadata ; mineral fertilizers ; oxygen isotopes ; phosphates ; phosphorus ; plant nutrition ; soil ; uncertainty
    Language English
    Dates of publication 2021-02
    Size p. 25-34.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note NAL-AP-2-clean ; REVIEW
    ISSN 1436-8730
    DOI 10.1002/jpln.202000513
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Article: A dual isotopic approach using radioactive phosphorus and the isotopic composition of oxygen associated to phosphorus to understand plant reaction to a change in P nutrition.

    Pfahler, Verena / Tamburini, Federica / Bernasconi, Stefano M / Frossard, Emmanuel

    Plant methods

    2017  Volume 13, Page(s) 75

    Abstract: Background: Changing the phosphorus (P) nutrition leads to changes in plant metabolism. The aim of this study was to investigate how these changes are reflected in the distribution of : Results: The δ: Conclusions: Omitting P for 10 days lead to a ...

    Abstract Background: Changing the phosphorus (P) nutrition leads to changes in plant metabolism. The aim of this study was to investigate how these changes are reflected in the distribution of
    Results: The δ
    Conclusions: Omitting P for 10 days lead to a translocation of P from source to sink organs in soybeans. This was accompanied by a significant lowering of the δ
    Language English
    Publishing date 2017-09-25
    Publishing country England
    Document type Journal Article
    ISSN 1746-4811
    ISSN 1746-4811
    DOI 10.1186/s13007-017-0227-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article ; Online: Changes of oxygen isotope values of soil P pools associated with changes in soil pH.

    Pfahler, Verena / Macdonald, Andy / Mead, Andrew / Smith, Andrew C / Tamburini, Federica / Blackwell, Martin S A / Granger, Steven J

    Scientific reports

    2020  Volume 10, Issue 1, Page(s) 2065

    Abstract: Field data about the effect of soil pH on phosphorus (P) cycling is limited. A promising tool to study P cycling under field conditions is ... ...

    Abstract Field data about the effect of soil pH on phosphorus (P) cycling is limited. A promising tool to study P cycling under field conditions is the
    Language English
    Publishing date 2020-02-07
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-020-59103-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  6. Article: A dual isotopic approach using radioactive phosphorus and the isotopic composition of oxygen associated to phosphorus to understand plant reaction to a change in P nutrition

    Pfahler, Verena / Federica Tamburini / Stefano M. Bernasconi / Emmanuel Frossard

    Plant methods. 2017 Dec., v. 13, no. 1

    2017  

    Abstract: BACKGROUND: Changing the phosphorus (P) nutrition leads to changes in plant metabolism. The aim of this study was to investigate how these changes are reflected in the distribution of ³³P and the isotopic composition of oxygen associated to P (δ¹⁸OP) in ... ...

    Abstract BACKGROUND: Changing the phosphorus (P) nutrition leads to changes in plant metabolism. The aim of this study was to investigate how these changes are reflected in the distribution of ³³P and the isotopic composition of oxygen associated to P (δ¹⁸OP) in different plant parts of soybean (Glycine max cv. Toliman). Two P pools were extracted sequentially with 0.3 M trichloroacetic acid (TCA P) and 10 M nitric acid (HNO₃; residual P). RESULTS: The δ¹⁸OP of TCA P in the old leaves of the − P plants (23.8‰) significantly decreased compared to the + P plants (27.4‰). The ³³P data point to an enhanced mobilisation of P from residual P in the old leaves of the − P plants compared to the + P plants. CONCLUSIONS: Omitting P for 10 days lead to a translocation of P from source to sink organs in soybeans. This was accompanied by a significant lowering of the δ¹⁸OP of TCA P in the source organs due to the enzymatic hydrolysis of organic P. Combining ³³P and δ¹⁸OP can provide useful insights in plant responses to P omission at an early stage.
    Keywords Glycine max ; enzymatic hydrolysis ; leaves ; metabolism ; nitric acid ; nutrition ; oxygen ; phosphorus ; plant response ; soybeans ; trichloroacetic acid
    Language English
    Dates of publication 2017-12
    Size p. 75.
    Publishing place BioMed Central
    Document type Article
    ISSN 1746-4811
    DOI 10.1186/s13007-017-0227-x
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  7. Article: Genotype-Specific Differences in Phosphorus Efficiency of Potato (

    Wacker-Fester, Katrin / Uptmoor, Ralf / Pfahler, Verena / Dehmer, Klaus J / Bachmann-Pfabe, Silvia / Kavka, Mareike

    Frontiers in plant science

    2019  Volume 10, Page(s) 1029

    Abstract: Potato is considered to have a low phosphorus (P) efficiency compared to other crops. Therefore, P fertilization requirements are high. New cultivars with improved P efficiency may contribute to save limited mineral P sources and to reduce eutrophication ...

    Abstract Potato is considered to have a low phosphorus (P) efficiency compared to other crops. Therefore, P fertilization requirements are high. New cultivars with improved P efficiency may contribute to save limited mineral P sources and to reduce eutrophication of surface water bodies. The present study aims to characterize the P efficiency of different potato genotypes and to identify mechanisms that improve P efficiency in cultivated potato. A diversity set of 32 potato accessions was used to assess their P efficiency. From this set, five cultivars were selected and two pot experiments with different P-fertilization strategies including a non-fertilized control were conducted to estimate effects of P deficiency on general agronomic and P related traits, root development, phosphatase activity and micro RNA 399 (miR399) expression. Significant differences between the 32 genotypes were found for P utilization efficiency (PUtE). P acquisition efficiency (PAE) as P content in low P in relation to P content in high P was positively correlated to relative biomass production while PUtE was not. Selected genotypes displayed a strong relation between total root length and P content. Root phosphatase activity and miR399 expression increased under P deficiency. However, tuber yields of four cultivars, grown on a soil with suboptimal content of plant available P, were not significantly affected in comparison to yields of well-fertilized plots. We conclude from the present study that PUtE and PAE are important traits when selecting for plants requiring less fertilizer inputs but PAE might be more important for cropping on deficient soils. A large root system might be the most important trait for P acquisition on such soils and therefore in breeding for P efficient crops. Lowering P fertilizer inputs might not necessarily reduce tuber yields.
    Language English
    Publishing date 2019-08-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2711035-7
    ISSN 1664-462X
    ISSN 1664-462X
    DOI 10.3389/fpls.2019.01029
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Article ; Online: A rapid ammonium fluoride method to determine the oxygen isotope ratio of available phosphorus in tropical soils.

    Pfahler, Verena / Bielnicka, Aleksandra / Smith, Andrew C / Granger, Steven J / Blackwell, Martin S A / Turner, Benjamin L

    Rapid communications in mass spectrometry : RCM

    2019  Volume 34, Issue 7, Page(s) e8647

    Abstract: Rationale: The isotopic composition of oxygen bound to phosphorus (δ: Methods: We compared P concentrations and δ: Results: Depending on the extraction conditions, Bray-1 P concentrations ranged from 0.2 to 66.3 mg P kg: Conclusions: The short ... ...

    Abstract Rationale: The isotopic composition of oxygen bound to phosphorus (δ
    Methods: We compared P concentrations and δ
    Results: Depending on the extraction conditions, Bray-1 P concentrations ranged from 0.2 to 66.3 mg P kg
    Conclusions: The short extraction time, insensitivity to extraction conditions and smaller mass of soil required to extract sufficient P for isotopic analysis make Bray-1extraction a suitable alternative to the AEM method for the determination of δ
    MeSH term(s) Algorithms ; Ammonium Compounds/chemistry ; Environmental Monitoring/methods ; Fluorides/chemistry ; Forests ; Mass Spectrometry/methods ; Oxygen Isotopes/analysis ; Phosphorus/analysis ; Soil/chemistry ; Tropical Climate
    Chemical Substances Ammonium Compounds ; Oxygen Isotopes ; Oxygen-18 ; Soil ; Phosphorus (27YLU75U4W) ; ammonium fluoride (4QT928IM0A) ; Fluorides (Q80VPU408O)
    Language English
    Publishing date 2019-11-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 58731-x
    ISSN 1097-0231 ; 0951-4198
    ISSN (online) 1097-0231
    ISSN 0951-4198
    DOI 10.1002/rcm.8647
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 3461: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  9. Article: Oxygen Isotopes for Unraveling Phosphorus Transformations in the Soil–Plant System: A Review

    Tamburini, Federica / Pfahler, Verena / von Sperber, Christian / Frossard, Emmanuel / Bernasconi, Stefano M

    Soil Science Society of America journal. 2014 Jan., v. 78, no. 1

    2014  

    Abstract: Phosphorus is a major nutrient for all living organisms. In the terrestrial environment, P is considered a double-edged sword. In some areas, agricultural production is strongly limited by the low soil P availability, while in others, P inputs in excess ... ...

    Abstract Phosphorus is a major nutrient for all living organisms. In the terrestrial environment, P is considered a double-edged sword. In some areas, agricultural production is strongly limited by the low soil P availability, while in others, P inputs in excess of plant needs have resulted in pollution of water bodies. A better understanding of soil–plant P cycling is needed to provide agricultural and environmental managers with better concepts for P use. Together with the routine analysis of soil available P, the determination of P chemical forms, and the use of P radioisotopes, researchers have recently started using the ratio of stable oxygen isotopes in phosphate (δ18O-P). The scientific community interested in using this isotopic tracer is slowly but steadily expanding because δ18O-P has proven to provide important information on biological processes influencing the P cycle and it could be used to trace the origin and fate of P in soil–plant systems. This review examines the published results and compiles the available data relevant for soil–plant systems, pinpoints gaps in analytical techniques and knowledge, and suggests key questions and topics to be investigated.
    Keywords analytical methods ; oxygen isotopes ; phosphates ; phosphorus ; radionuclides ; soil ; surface water ; water pollution
    Language English
    Dates of publication 2014-01
    Size p. 38-46.
    Publishing place The Soil Science Society of America, Inc.
    Document type Article
    Note epub
    ZDB-ID 196788-5
    ISSN 0361-5995
    ISSN 0361-5995
    DOI 10.2136/sssaj2013.05.0186dgs
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 898: Show issues
    Zs Lan SSSAJ: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  10. Article ; Online: The oxygen isotopic composition of phosphate in river water and its potential sources in the Upper River Taw catchment, UK.

    Granger, Steven J / Heaton, Tim H E / Pfahler, Verena / Blackwell, Martin S A / Yuan, Huimin / Collins, Adrian L

    The Science of the total environment

    2016  Volume 574, Page(s) 680–690

    Abstract: The need to reduce both point and diffuse phosphorus pollution to aquatic ecosystems is widely recognised and in order to achieve this, identification of the different pollutant sources is essential. Recently, a stable isotope approach using oxygen ... ...

    Abstract The need to reduce both point and diffuse phosphorus pollution to aquatic ecosystems is widely recognised and in order to achieve this, identification of the different pollutant sources is essential. Recently, a stable isotope approach using oxygen isotopes within phosphate (δ
    Language English
    Publishing date 2016-10-14
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2016.09.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top