Johan A. Hellebust

3.9k total citations · 1 hit paper
110 papers, 3.0k citations indexed

About

Johan A. Hellebust is a scholar working on Renewable Energy, Sustainability and the Environment, Oceanography and Molecular Biology. According to data from OpenAlex, Johan A. Hellebust has authored 110 papers receiving a total of 3.0k indexed citations (citations by other indexed papers that have themselves been cited), including 56 papers in Renewable Energy, Sustainability and the Environment, 41 papers in Oceanography and 26 papers in Molecular Biology. Recurrent topics in Johan A. Hellebust's work include Algal biology and biofuel production (56 papers), Marine and coastal ecosystems (34 papers) and Diatoms and Algae Research (22 papers). Johan A. Hellebust is often cited by papers focused on Algal biology and biofuel production (56 papers), Marine and coastal ecosystems (34 papers) and Diatoms and Algae Research (22 papers). Johan A. Hellebust collaborates with scholars based in Canada, United States and United Kingdom. Johan A. Hellebust's co-authors include Iftikhar Ahmad, R. R. L. Guillard, Robert G. Sheath, Joyce Lewin, Lewis M. Brown, T. C. Hutchinson, Takashi Sawa, Carmen Soto, Egon T. Degens and William M. Sackett and has published in prestigious journals such as PLANT PHYSIOLOGY, Analytical Biochemistry and Journal of Bacteriology.

In The Last Decade

Johan A. Hellebust

108 papers receiving 2.5k citations

Hit Papers

align trajectories

What are hit papers?

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.

EXCRETION OF SOME ORGANIC COMPOUNDS BY MARINE PHYTOPLANKTON1

1965 458 citations Johan A. Hellebust profile →

Peers

Countries citing papers authored by Johan A. Hellebust

Since Specialization

Citations

This map shows the geographic impact of Johan A. Hellebust'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 Johan A. Hellebust with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Johan A. Hellebust more than expected).

Fields of papers citing papers by Johan A. Hellebust

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Johan A. Hellebust. 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 Johan A. Hellebust. The network helps show where Johan A. Hellebust may publish in the future.

Co-authorship network of co-authors of Johan A. Hellebust

This figure shows the co-authorship network connecting the top 25 collaborators of Johan A. Hellebust. A scholar is included among the top collaborators of Johan A. Hellebust 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 Johan A. Hellebust. Johan A. Hellebust 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

#	Work	Indexed citations
1	Growth and Osmoregulation of Chaetoceros muelleri in Relation to Salinity 1995 ·Plant and Cell Physiology ·(unknown), Naoki Nishimoto, (unknown), Johan A. Hellebust	33
2	Partial characterization of enzymes of nitrogen metabolism in Chlorella autotrophica Shihira & Krauss 1993 ·New Phytologist ·Iftikhar Ahmad, Johan A. Hellebust	1
3	Partial Characterization of Ornithine Carbamoyltransferase in Three Microalgae 1990 ·PLANT PHYSIOLOGY ·Gilles Laliberté, Johan A. Hellebust	4
4	Regulation of Chloroplast Development by Nitrogen Source and Growth Conditions in a Chlorella protothecoides Strain 1990 ·PLANT PHYSIOLOGY ·(unknown), Johan A. Hellebust	14
5	Nitrogen metabolism in the ectomycorrhizal fungus Laccaria bicolor (R. Mre.) Orton 1990 ·New Phytologist ·(unknown), (unknown), David W. Malloch, Johan A. Hellebust	42
6	Regulation of Nitrogen Assimilation in Green Microalgae 1989 ·Johan A. Hellebust, Iftikhar Ahmad	54
7	A spectrophotometric procedure for measuring oxoglutarate and determining aminotransferase activities using nicotinamide adenine dinucleotide phosphate-linked glutamate dehydrogenase from algae 1989 ·Analytical Biochemistry ·(unknown), Johan A. Hellebust	7
8	Pyrroline-5-Carboxylate Reductase in Chlorella autotrophica and Chlorella saccharophila in Relation to Osmoregulation 1989 ·PLANT PHYSIOLOGY ·Gilles Laliberté, Johan A. Hellebust	15
9	Regulation of proline content of Chlorella autotrophica in response to changes in salinity 1989 ·Canadian Journal of Botany ·Gilles Laliberté, Johan A. Hellebust	29
10	Glutamine Synthetase Isoenzymes in the Green Soil Alga Stichococcus bacillaris Naeg. 1987 ·PLANT PHYSIOLOGY ·Iftikhar Ahmad, Johan A. Hellebust	15
11	The regulation of amino acid metabolism during hyperosmotic stress in Acanthamoeba castellanii 1987 ·Journal of Experimental Zoology ·Richard Poulin, Jacques Larochelle, Johan A. Hellebust	14
12	The Role of Glycerol and Inorganic Ions in Osmoregulatory Responses of the Euryhaline Flagellate Chlamydomonas pulsatilla Wollenweber 1986 ·PLANT PHYSIOLOGY ·Iftikhar Ahmad, Johan A. Hellebust	19
13	Transport and Assimilation of Nitrogen by Stichococcus bacillaris Grown in the Presence of Methionine Sulfoximine 1985 ·PLANT PHYSIOLOGY ·Iftikhar Ahmad, Johan A. Hellebust	7
14	Nitrogen Metabolism of the Marine Microalga Chlorella autotrophica 1984 ·PLANT PHYSIOLOGY ·Iftikhar Ahmad, Johan A. Hellebust	34
15	Uptake and Concentration of Alkylamines by a Marine Diatom 1981 ·PLANT PHYSIOLOGY ·Patricia A. Wheeler, Johan A. Hellebust	26
16	Vegetational recovery in the Canadian Arctic after crude and diesel oil spills 1978 ·T. C. Hutchinson, Johan A. Hellebust	3
17	Physiological and biochemical methods 1978 ·Cambridge University Press eBooks ·Johan A. Hellebust, (unknown)	61
18	UPTAKE OF ORGANIC SUBSTRATES BY CYCLOTELLA CRYPTICA (BACILLARIOPHYCEAE): EFFECTS OF IONS, IONOPHORES AND METABOLIC AND TRANSPORT INHIBITORS^1,² 1978 ·Journal of Phycology ·Johan A. Hellebust	43
19	Regulation of proline metabolism in the marine centric diatom Cyclotella cryptica 1976 ·Canadian Journal of Botany ·(unknown), Johan A. Hellebust	28
20	UPTAKE SPECIFICITY FOR ORGANIC SUBSTRATES BY THE MARINE DIATOM MELOSIRA NUMMULOIDES¹ 1967 ·Journal of Phycology ·Johan A. Hellebust, Robert R. L. Guillard	69

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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