Leonard W. Haas

982 total citations
20 papers, 738 citations indexed

About

Leonard W. Haas is a scholar working on Oceanography, Ecology and Molecular Biology. According to data from OpenAlex, Leonard W. Haas has authored 20 papers receiving a total of 738 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Oceanography, 10 papers in Ecology and 7 papers in Molecular Biology. Recurrent topics in Leonard W. Haas's work include Marine and coastal ecosystems (10 papers), Microbial Community Ecology and Physiology (9 papers) and Protist diversity and phylogeny (7 papers). Leonard W. Haas is often cited by papers focused on Marine and coastal ecosystems (10 papers), Microbial Community Ecology and Physiology (9 papers) and Protist diversity and phylogeny (7 papers). Leonard W. Haas collaborates with scholars based in United States and Ghana. Leonard W. Haas's co-authors include Kenneth L. Webb, Jeffrey D. Shields, Wolfgang K. Vogelbein, Kimberly S. Reece, Patrice L. Mason, C.S. Hammen, Kevin D. Friedland, KD Friedland, John V. Merriner and Calvin C Walker and has published in prestigious journals such as Nature, Science and Proceedings of the National Academy of Sciences.

In The Last Decade

Leonard W. Haas

19 papers receiving 672 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Leonard W. Haas United States 15 492 380 170 166 164 20 738
M. Modigh Italy 18 755 1.5× 518 1.4× 143 0.8× 214 1.3× 97 0.6× 26 937
Laura Arı́n Spain 11 442 0.9× 305 0.8× 143 0.8× 170 1.0× 53 0.3× 19 626
Catherine Riaux‐Gobin France 18 622 1.3× 445 1.2× 152 0.9× 150 0.9× 127 0.8× 88 1.0k
Madhu A. Paranjape Canada 13 429 0.9× 359 0.9× 100 0.6× 249 1.5× 55 0.3× 15 681
JJ Cullen Canada 9 654 1.3× 272 0.7× 274 1.6× 125 0.8× 41 0.3× 10 773
C. Bakker Netherlands 17 411 0.8× 444 1.2× 143 0.8× 260 1.6× 32 0.2× 46 738
Valeriano Rodrı́guez Spain 16 709 1.4× 333 0.9× 167 1.0× 307 1.8× 33 0.2× 37 880
Donato Marino Italy 16 708 1.4× 361 0.9× 205 1.2× 170 1.0× 179 1.1× 27 896
Fernando Rubino Italy 16 472 1.0× 237 0.6× 215 1.3× 251 1.5× 101 0.6× 42 685
M.G. Mazzocchi Italy 11 481 1.0× 355 0.9× 65 0.4× 283 1.7× 72 0.4× 13 718

Countries citing papers authored by Leonard W. Haas

Since Specialization
Citations

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

Fields of papers citing papers by Leonard W. Haas

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Leonard W. Haas. 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 Leonard W. Haas. The network helps show where Leonard W. Haas may publish in the future.

Co-authorship network of co-authors of Leonard W. Haas

This figure shows the co-authorship network connecting the top 25 collaborators of Leonard W. Haas. A scholar is included among the top collaborators of Leonard W. Haas 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 Leonard W. Haas. Leonard W. Haas is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Small, Hamish J., Jeffrey D. Shields, Leonard W. Haas, et al.. (2009). GENETIC VARIATION AMONG STRAINS OF PSEUDOPFIESTERIA SHUMWAYAE AND PFIESTERIA PISCICIDA (DINOPHYCEAE)1. Journal of Phycology. 45(6). 1315–1322. 4 indexed citations
2.
Friedland, Kevin D., Dean W. Ahrenholz, & Leonard W. Haas. (2005). Viable gut passage of cyanobacteria through the filter-feeding fish Atlantic menhaden, Brevoortia tyrannus. Journal of Plankton Research. 27(7). 715–718. 25 indexed citations
3.
Litaker, R. Wayne, Karen A. Steidinger, Patrice L. Mason, et al.. (2005). THE RECLASSIFICATION OF PFIESTERIA SHUMWAYAE (DINOPHYCEAE): PSEUDOPFIESTERIA, GEN. NOV.1. Journal of Phycology. 41(3). 643–651. 54 indexed citations
4.
Vogelbein, Wolfgang K., et al.. (2003). A NEW LARVAL FISH BIOASSAY FOR TESTING THE PATHOGENICITY OF PFIESTERIA SPP. (DINOPHYCEAE)1. Journal of Phycology. 39(3). 600–609. 14 indexed citations
5.
Mason, Patrice L., Wolfgang K. Vogelbein, Leonard W. Haas, & Jeffrey D. Shields. (2003). AN IMPROVED STRIPPING TECHNIQUE FOR LIGHTLY ARMORED DINOFLAGELLATES1. Journal of Phycology. 39(1). 253–258. 14 indexed citations
6.
Vogelbein, Wolfgang K., Jeffrey D. Shields, Kimberly S. Reece, et al.. (2002). Pfiesteria shumwayae kills fish by micropredation not exotoxin secretion. Nature. 418(6901). 967–970. 75 indexed citations
7.
Berry, John P., Kimberly S. Reece, Kathleen S. Rein, et al.. (2002). Are Pfiesteria species toxicogenic? Evidence against production of ichthyotoxins by Pfiesteria shumwayae. Proceedings of the National Academy of Sciences. 99(17). 10970–10975. 39 indexed citations
8.
Vogelbein, Wolfgang K., et al.. (2001). Skin Ulcers in Estuarine Fishes: A Comparative Pathological Evaluation of Wild and Laboratory-Exposed Fish. Environmental Health Perspectives. 109. 687–687. 5 indexed citations
9.
Steidinger, Karen A., Jan H. Landsberg, Earnest W. Truby, et al.. (2001). Classification and identification of Pfiesteria and Pfiesteria-like species.. Environmental Health Perspectives. 109(suppl 5). 661–665. 16 indexed citations
10.
11.
Neckles, Hilary A., Eric T. Koepfler, Leonard W. Haas, Richard L. Wetzel, & Robert J. Orth. (1994). Dynamics of Epiphytic Photoautotrophs and Heterotrophs in Zostera marina (Eelgrass) Microcosms: Responses to Nutrient Enrichment and Grazing. Estuaries. 17(3). 597–597. 44 indexed citations
12.
Haas, Leonard W., et al.. (1990). ELECTRON MICROSCOPY OF NANOPLANKTON FROM THE NORTH PACIFIC CENTRAL GYRE1. Journal of Phycology. 26(3). 421–439. 41 indexed citations
13.
Friedland, Kevin D. & Leonard W. Haas. (1988). Emigration of Juvenile Atlantic Menhaden, Brevoortia tyrannus (Pisces: Clupeidae), from the York River Estuary. Estuaries. 11(1). 45–45. 11 indexed citations
14.
Friedland, KD, Leonard W. Haas, & John V. Merriner. (1984). Filtering rates of the juvenile Atlantic menhaden Brevoortia tyrannus (Pisces: Clupeidae), with consideration of the effects of detritus and swimming speed. Marine Biology. 84(2). 109–117. 37 indexed citations
15.
16.
Haas, Leonard W., et al.. (1982). York River Destratification: An Estuary-Subestuary Interaction. Science. 216(4553). 1413–1414. 19 indexed citations
17.
Perkins, Frank O., et al.. (1981). Ultrastructure of a marine Synechococcus possessing spinae. Canadian Journal of Microbiology. 27(3). 318–329. 25 indexed citations
18.
Haas, Leonard W. & Kenneth L. Webb. (1979). Nutritional mode of several non-pigmented microflagellates from the York River estuary, Virginia. Journal of Experimental Marine Biology and Ecology. 39(2). 125–134. 90 indexed citations
19.
Haas, Leonard W.. (1977). The effect of the spring-neap tidal cycle on the vertical salinity structure of the James, York and Rappahannock Rivers, Virginia, U.S.A.. Estuarine and Coastal Marine Science. 5(4). 485–496. 161 indexed citations
20.
Haas, Leonard W., et al.. (1975). Early ammonia release by a polychaete nereis virens and a crab carcinus maenas in diluted sea water. Comparative Biochemistry and Physiology Part A Physiology. 52(3). 501–503. 50 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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