Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
Trichodesmium , a Globally Significant Marine Cyanobacterium
19971.0k citationsBirgitta Bergman et al.profile →
Countries citing papers authored by Birgitta Bergman
Since
Specialization
Citations
This map shows the geographic impact of Birgitta Bergman'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 Birgitta Bergman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Birgitta Bergman more than expected).
Fields of papers citing papers by Birgitta Bergman
This network shows the impact of papers produced by Birgitta Bergman. 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 Birgitta Bergman. The network helps show where Birgitta Bergman may publish in the future.
Co-authorship network of co-authors of Birgitta Bergman
This figure shows the co-authorship network connecting the top 25 collaborators of Birgitta Bergman.
A scholar is included among the top collaborators of Birgitta Bergman 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 Birgitta Bergman. Birgitta Bergman is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Liang, Ran, et al.. (2006). Identification of developmentally regulated proteins in cyanobacterial hormogonia using a proteomic approach.. Symbiosis. 41(2). 87–95.7 indexed citations
6.
Cox, Paul Alan, Sandra Anne Banack, Susan J. Murch, et al.. (2005). Diverse taxa of cyanobacteria produce β- N -methylamino- l -alanine, a neurotoxic amino acid. Proceedings of the National Academy of Sciences. 102(14). 5074–5078.544 indexed citations breakdown →
Liaimer, Anton, Andrey Matveyev, & Birgitta Bergman. (2001). Isolation of host plant induced cDNAs from Nostoc sp. strain PCC 9229 forming symbiosis with the angiosperm Gunnera spp.. Symbiosis. 31(4). 293–307.
10.
N., A., Erik Söderbäck, & Birgitta Bergman. (2000). Tansley Review No. 116. New Phytologist. 147(3). 449–481.230 indexed citations
11.
Janson, Sven, et al.. (2000). The effect of exogenous carbohydrates on nitrogen fixation and hetR expression in Nostoc PCC 9229 forming symbiosis with Gunnera.. Symbiosis. 28(1). 63–76.9 indexed citations
12.
Viterbo, Ada, Andrey Matveyev, Ulla Rasmussen, & Birgitta Bergman. (1999). Characterization of a nodM/glmS Homologous Gene in the Symbiotic Cyanobacterium Nostoc PCC 9229. Symbiosis. 26(3). 237–246.3 indexed citations
Söderbäck, Erik, et al.. (1992). Immunogold localization of hydrogenase in the cyanobacterial-plant symbioses Peltigera canina, Anthoceros punctatus and Gunnera magellanica. Symbiosis. 12(2). 131–144.8 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.