UL Zweifel

1.8k total citations
22 papers, 1.5k citations indexed

About

UL Zweifel is a scholar working on Ecology, Molecular Biology and Oceanography. According to data from OpenAlex, UL Zweifel has authored 22 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Ecology, 8 papers in Molecular Biology and 4 papers in Oceanography. Recurrent topics in UL Zweifel's work include Microbial Community Ecology and Physiology (11 papers), Plant Toxicity and Pharmacological Properties (4 papers) and Carcinogens and Genotoxicity Assessment (3 papers). UL Zweifel is often cited by papers focused on Microbial Community Ecology and Physiology (11 papers), Plant Toxicity and Pharmacological Properties (4 papers) and Carcinogens and Genotoxicity Assessment (3 papers). UL Zweifel collaborates with scholars based in Sweden, Switzerland and Denmark. UL Zweifel's co-authors include Åke Hagström, Jarone Pinhassi, Bo Norrman, Ch. Schlatter, J. Lüthy, Farooq Azam, José Luis Martínez, Nicholas Blackburn, Anne Winding and H. Poiger and has published in prestigious journals such as Applied and Environmental Microbiology, Journal of Agricultural and Food Chemistry and Cellular and Molecular Life Sciences.

In The Last Decade

UL Zweifel

22 papers receiving 1.4k citations

Peers

UL Zweifel

ECOLO

OCEAN

POLLU

Kouichi Ohwada Japan

Madeline Wu United States

Genki I. Matsumoto Japan

Usio Simidu Japan

John J. A. McLaughlin United States

Elizabeth W. Maas New Zealand

Vera Thiel Germany

Rolf Schmaljohann Germany

John P. McCrow United States

Stephanie Markert Germany

Kouichi Ohwada Japan

UL Zweifel

669 ×0.7

ECOLO

338 ×0.5

OCEAN

493 ×1.0

269 ×1.6

240 ×1.6

POLLU

Citations per year, relative to UL Zweifel UL Zweifel (= 1×) peers Kouichi Ohwada

Countries citing papers authored by UL Zweifel

Since Specialization

Citations

This map shows the geographic impact of UL Zweifel's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by UL Zweifel with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites UL Zweifel more than expected).

Fields of papers citing papers by UL Zweifel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by UL Zweifel. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by UL Zweifel. The network helps show where UL Zweifel may publish in the future.

Co-authorship network of co-authors of UL Zweifel

This figure shows the co-authorship network connecting the top 25 collaborators of UL Zweifel. A scholar is included among the top collaborators of UL Zweifel based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with UL Zweifel. UL Zweifel is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Hagström, Åke, Farooq Azam, Carlo Berg, & UL Zweifel. (2017). Isolates as models to study bacterial ecophysiology and biogeochemistry. Aquatic Microbial Ecology. 80(1). 15–27. 11 indexed citations

Pinhassi, Jarone, et al.. (2003). Spatial variability in bacterioplankton community composition at the Skagerrak-Kattegat Front. Marine Ecology Progress Series. 255. 1–13. 54 indexed citations

Pinhassi, Jarone, et al.. (2002). Variability in motility characteristics among marine bacteria. Aquatic Microbial Ecology. 28. 229–237. 65 indexed citations

Hagström, Åke, Jarone Pinhassi, & UL Zweifel. (2001). Marine bacterioplankton show bursts of rapid growth induced by substrate shifts. Aquatic Microbial Ecology. 24. 109–115. 28 indexed citations

Pinhassi, Jarone, et al.. (1999). Coupling between bacterioplankton species composition, population dynamics, and organic matter degradation. Aquatic Microbial Ecology. 17. 13–26. 172 indexed citations

Pinhassi, Jarone, UL Zweifel, & Åke Hagström. (1997). Dominant marine bacterioplankton species found among colony-forming bacteria. Applied and Environmental Microbiology. 63(9). 3359–3366. 172 indexed citations

Zweifel, UL, Nicholas Blackburn, & Åke Hagström. (1996). Cycling of marine dissolved organic matter. I. An experimental system. Aquatic Microbial Ecology. 11. 65–77. 17 indexed citations

Blackburn, Nicholas, UL Zweifel, & Åke Hagström. (1996). Cycling of marine dissolved organic matter. II. A model analysis. Aquatic Microbial Ecology. 11. 79–90. 20 indexed citations

Schmid, Peter, UL Zweifel, Ch. Schlatter, et al.. (1995). Mortality of birds of prey following field application of granular carbofuran: A case study. Archives of Environmental Contamination and Toxicology. 29(1). 140–145. 12 indexed citations

10.

Zweifel, UL & Åke Hagström. (1995). Total counts of marine bacteria include a large fraction of non-nucleoid-containing bacteria (ghosts). Applied and Environmental Microbiology. 61(6). 2180–2185. 278 indexed citations

11.

Zweifel, UL, Bo Norrman, & Åke Hagström. (1993). Consumption of dissolved organic carbon by marine bacteria and demand for inorganic nutrients. Marine Ecology Progress Series. 101. 23–32. 279 indexed citations

12.

Schroeder, Tania M., et al.. (1985). Ammoniation of aflatoxin-containing corn: distribution, in vivo covalent deoxyribonucleic acid binding, and mutagenicity of reaction products. Journal of Agricultural and Food Chemistry. 33(2). 311–316. 27 indexed citations

13.

Lüthy, J., et al.. (1984). [Pyrrolizidine alkaloids in medicinal plants of Boraginaceal: Borago officinalis L. and Pulmonaria officinalis L].. PubMed. 59(9-10). 242–6. 15 indexed citations

14.

Lüthy, J., et al.. (1983). Pyrrolizidine alkaloids in Petasites hybridus and P. albus. Pharmaceutica Acta Helvetiae. 58(4). 98–100. 15 indexed citations

15.

Poiger, H., Hans Rudolf Buser, Hans Weber, UL Zweifel, & Ch. Schlatter. (1982). Structure elecidation of mammalian TCDD-metabolites. Cellular and Molecular Life Sciences. 38(4). 484–486. 47 indexed citations

16.

Lüthy, J., et al.. (1982). Pyrrolizidine alkaloids fromSymphytum officinale L. and their percutaneous absorption in rats. Cellular and Molecular Life Sciences. 38(9). 1085–1087. 35 indexed citations

17.

Lüthy, J., et al.. (1981). Pyrrolizidine alkaloids of Senecio alpinus L. and their detection in feedingstuffs. Journal of Agricultural and Food Chemistry. 29(2). 302–305. 34 indexed citations

18.

Lüthy, J., UL Zweifel, & Ch. Schlatter. (1980). Metabolism and tissue distribution of [14C]aflatoxin B1 in pigs. Food and Cosmetics Toxicology. 18(3). 253–256. 21 indexed citations

19.

Lutz, Werner K., et al.. (1980). In vivo covalent binding of aflatoxin metabolites isolated from animal tissue to rat-liver DNA. Food and Cosmetics Toxicology. 18(3). 257–260. 15 indexed citations

20.

Friederich, U., et al.. (1980). [Synthesis and toxicology of three natural cyanoepithioalkanes (author's transl)].. PubMed. 50(4). 423–4. 5 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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