Grethe Rytter Hasle

3.7k total citations · 1 hit paper
50 papers, 2.5k citations indexed

About

Grethe Rytter Hasle is a scholar working on Biomaterials, Oceanography and Environmental Chemistry. According to data from OpenAlex, Grethe Rytter Hasle has authored 50 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Biomaterials, 28 papers in Oceanography and 10 papers in Environmental Chemistry. Recurrent topics in Grethe Rytter Hasle's work include Diatoms and Algae Research (37 papers), Marine and coastal ecosystems (20 papers) and Marine Biology and Ecology Research (12 papers). Grethe Rytter Hasle is often cited by papers focused on Diatoms and Algae Research (37 papers), Marine and coastal ecosystems (20 papers) and Marine Biology and Ecology Research (12 papers). Grethe Rytter Hasle collaborates with scholars based in Norway, United States and United Kingdom. Grethe Rytter Hasle's co-authors include Greta A. Fryxell, Nina Lundholm, Carina B. Lange, Øjvind Moestrup, Kerstin Hoef‐Emden, Erik E. Syvertsen, Berit R. Heimdal, Patricia A. Sims, Paul E. Hargraves and Linda Medlin and has published in prestigious journals such as Nature, Journal of Phycology and Taxon.

In The Last Decade

Grethe Rytter Hasle

50 papers receiving 2.3k 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.

Diatoms: Cleaning and Mounting for Light and Electron Microscopy

1970 416 citations Grethe Rytter Hasle, Greta A. Fryxell profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Grethe Rytter Hasle Norway	27	1.6k	1.1k	1.0k	957	415	50	2.5k
Greta A. Fryxell United States	32	2.5k 1.6×	1.1k 1.0×	1.1k 1.1×	1.4k 1.4×	501 1.2×	83	3.6k
Irena Kaczmarska Canada	25	1.1k 0.7×	1.1k 1.0×	497 0.5×	1.0k 1.1×	752 1.8×	83	2.3k
Paul E. Hargraves United States	26	2.1k 1.3×	601 0.5×	1.1k 1.1×	1.3k 1.3×	771 1.9×	57	3.1k
Eileen J. Cox United Kingdom	27	677 0.4×	1.8k 1.6×	519 0.5×	1.0k 1.1×	625 1.5×	104	2.5k
E. Paasche Norway	33	2.8k 1.8×	585 0.5×	873 0.8×	1.0k 1.1×	410 1.0×	56	3.5k
Reimer Simonsen Germany	9	526 0.3×	882 0.8×	389 0.4×	471 0.5×	179 0.4×	15	1.5k
Éva Ács Hungary	26	502 0.3×	1.0k 0.9×	885 0.9×	1.1k 1.2×	248 0.6×	125	2.1k
Tracy A. Villareal United States	41	3.6k 2.3×	404 0.4×	1.3k 1.3×	2.2k 2.3×	645 1.6×	101	4.6k
John Patrick Kociolek United States	29	802 0.5×	3.1k 2.7×	626 0.6×	1.6k 1.7×	1.2k 2.9×	349	3.8k
Peter A. Siver United States	30	674 0.4×	848 0.8×	754 0.7×	1.4k 1.4×	1.2k 2.9×	149	2.7k

Countries citing papers authored by Grethe Rytter Hasle

Since Specialization

Citations

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

Fields of papers citing papers by Grethe Rytter Hasle

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Grethe Rytter Hasle. 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 Grethe Rytter Hasle. The network helps show where Grethe Rytter Hasle may publish in the future.

Co-authorship network of co-authors of Grethe Rytter Hasle

This figure shows the co-authorship network connecting the top 25 collaborators of Grethe Rytter Hasle. A scholar is included among the top collaborators of Grethe Rytter Hasle 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 Grethe Rytter Hasle. Grethe Rytter Hasle 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

Lundholm, Nina & Grethe Rytter Hasle. (2010). Fragilariopsis (Bacillariophyceae) of the Northern Hemisphere – morphology, taxonomy, phylogeny and distribution, with a description of F. pacifica sp. nov.. Phycologia. 49(5). 438–460. 25 indexed citations

Silva, Paul C. & Grethe Rytter Hasle. (2006). Taxonomic and nomenclatural history of Fragilaria (Bacillariophyceae). Taxon. 55(1). 200–202. 6 indexed citations

Lundholm, Nina, Grethe Rytter Hasle, Greta A. Fryxell, & Paul E. Hargraves. (2002). Morphology, phylogeny and taxonomy of species within the Pseudo-nitzschia americana complex (Bacillariophyceae) with descriptions of two new species, Pseudo-nitzschia brasiliana and Pseudo-nitzschia linea. Phycologia. 41(5). 480–497. 108 indexed citations

Hasle, Grethe Rytter. (2002). Are most of the domoic acid-producing species of the diatom genus Pseudo-nitzschia cosmopolites?. Harmful Algae. 1(2). 137–146. 207 indexed citations

Hasle, Grethe Rytter. (2001). THE MARINE, PLANKTONIC DIATOM FAMILY THALASSIONEMATACEAE: MORPHOLOGY, TAXONOMY AND DISTRIBUTION. Diatom Research. 16(1). 1–82. 36 indexed citations

Silva, Paul C. & Grethe Rytter Hasle. (1997). (1283) Proposal to conserve the name Synedra nitzschioides (Bacillariophyceae) with a conserved type to preserve the current application of the generic name Thalassionema. Taxon. 46(2). 331–332. 4 indexed citations

Hasle, Grethe Rytter, Erik E. Syvertsen, & Cecilie H. von Quillfeldt. (1996). FOSSULA ARCTICAGEN. NOV., SPEC. NOV., A MARINE ARCTIC ARAPHID DIATOM. Diatom Research. 11(2). 261–272. 21 indexed citations

Hasle, Grethe Rytter. (1995). PSEUDO‐NITZSCHIA PUNGENS AND P. MULTISERIES (BACILLARIOPHYCEAE): NOMENCLATURAL HISTORY, MORPHOLOGY, AND DISTRIBUTION¹. Journal of Phycology. 31(3). 428–435. 85 indexed citations

Hasle, Grethe Rytter. (1994). PSEUDO‐NITZSCHIA AS A GENUS DISTINCT FROM NITZSCHIA (BACILLARIOPHYCEAE)¹. Journal of Phycology. 30(6). 1036–1039. 65 indexed citations

10.

Silva, Paul C. & Grethe Rytter Hasle. (1994). (1087) Proposal to conserve Thalassiosiraceae against Lauderiaceae and Planktoniellaceae (Algae). Taxon. 43(2). 287–289. 4 indexed citations

11.

Medlin, Linda & Grethe Rytter Hasle. (1990). Some Nitzschia and related diatom species from fast ice samples in the Arctic and Antarctic. Polar Biology. 10(6). 46 indexed citations

12.

Hasle, Grethe Rytter. (1988). Atlas and Catalogue of the Diatom Types of Friedrich Hustedt. Phycologia. 27(2). 300–301. 152 indexed citations

13.

Hasle, Grethe Rytter. (1985). The Fossil Diatom Thalassiosira oranica, n. sp.. Micropaleontology. 31(3). 280–280. 7 indexed citations

14.

Hasle, Grethe Rytter. (1983). (698) Proposal to Conserve the Generic Name Cerataulina against Syringidium (Bacillariophyta). Taxon. 32(3). 474–474. 6 indexed citations

15.

Hasle, Grethe Rytter. (1983). Thalassiosira punctigera (Castr.) comb, nov., a widely distributed marine planktonic diatom. Nordic Journal of Botany. 3(5). 593–608. 27 indexed citations

16.

Hasle, Grethe Rytter, et al.. (1976). BRACKISH WATER AND FRESHWATER SPECIES OF THE DIATOM GENUS SKELETONEMA. II. SKELETONEMA POTAMOS COMB. NOV.¹. Journal of Phycology. 12(1). 73–82. 54 indexed citations

17.

Hasle, Grethe Rytter, et al.. (1976). BRACKISH WATER AND FRESHWATER SPECIES OF THE DIATOM GENUS SKELETONEMA. II. SKELETONEMA POTAMOS COMB. NOV.1. Journal of Phycology. 12(1). 73–82. 4 indexed citations

18.

Hasle, Grethe Rytter. (1972). The Inclusion of Coscinosira Gran (Bacillariophyceae) in Thalassiosira Cleve. Taxon. 21(4). 543–543. 11 indexed citations

19.

Fryxell, Greta A. & Grethe Rytter Hasle. (1972). THALASSIOSIRA ECCENTRICA (EHRENB.) CLEVE, T. SYMMETRICA SP. NOV., AND SOME RELATED CENTRIC DIATOMS1. Journal of Phycology. 8(4). 297–317. 16 indexed citations

20.

Hasle, Grethe Rytter. (1956). Phytoplankton and Hydrography of the Pacific Part of the Antarctic Ocean. Nature. 177(4509). 616–617. 15 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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