Robert L. Spehar

1.4k total citations
19 papers, 1.2k citations indexed

About

Robert L. Spehar is a scholar working on Health, Toxicology and Mutagenesis, Water Science and Technology and Pollution. According to data from OpenAlex, Robert L. Spehar has authored 19 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Health, Toxicology and Mutagenesis, 9 papers in Water Science and Technology and 7 papers in Pollution. Recurrent topics in Robert L. Spehar's work include Environmental Toxicology and Ecotoxicology (16 papers), Water Quality and Pollution Assessment (9 papers) and Toxic Organic Pollutants Impact (5 papers). Robert L. Spehar is often cited by papers focused on Environmental Toxicology and Ecotoxicology (16 papers), Water Quality and Pollution Assessment (9 papers) and Toxic Organic Pollutants Impact (5 papers). Robert L. Spehar collaborates with scholars based in United States. Robert L. Spehar's co-authors include James T. Fiandt, Russell J. Erickson, Richard L. Anderson, David L. DeFoe, Philip M. Cook, Larry T. Brooke, Joseph D. Fernandez, Gary W. Holcombe, Joseph E. Tietge and Gregory E. Elonen and has published in prestigious journals such as Environmental Toxicology and Chemistry, Aquatic Toxicology and Transactions of the American Fisheries Society.

In The Last Decade

Robert L. Spehar

19 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Robert L. Spehar United States	16	937	484	155	149	145	19	1.2k
James T. Fiandt United States	15	733 0.8×	386 0.8×	164 1.1×	153 1.0×	162 1.1×	21	971
Dennis T. Burton United States	21	748 0.8×	353 0.7×	174 1.1×	133 0.9×	296 2.0×	94	1.3k
S. R. Petrocelli United States	8	883 0.9×	407 0.8×	84 0.5×	132 0.9×	201 1.4×	12	1.2k
J.F. de L.G. Solbé United Kingdom	19	684 0.7×	314 0.6×	104 0.7×	93 0.6×	158 1.1×	32	1.1k
Kevin J. Buhl United States	19	589 0.6×	281 0.6×	101 0.7×	107 0.7×	141 1.0×	41	932
J.H. Canton Netherlands	23	909 1.0×	438 0.9×	105 0.7×	159 1.1×	90 0.6×	29	1.3k
B. S. Khangarot India	20	890 0.9×	509 1.1×	158 1.0×	92 0.6×	201 1.4×	55	1.2k
Paul G. Welsh United States	13	530 0.6×	272 0.6×	132 0.9×	98 0.7×	82 0.6×	17	687
P. D. Abel United Kingdom	11	450 0.5×	222 0.5×	84 0.5×	153 1.0×	172 1.2×	14	800
Jorge Herkovits Argentina	21	778 0.8×	415 0.9×	113 0.7×	245 1.6×	122 0.8×	64	1.2k

Countries citing papers authored by Robert L. Spehar

Since Specialization

Citations

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

Fields of papers citing papers by Robert L. Spehar

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Robert L. Spehar. 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 Robert L. Spehar. The network helps show where Robert L. Spehar may publish in the future.

Co-authorship network of co-authors of Robert L. Spehar

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

All Works

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19 of 19 papers shown

Spehar, Robert L., Larry T. Brooke, Thomas P. Markee, & Michael D. Kahl. (2010). Comparative toxicity and bioconcentration of nonylphenol in freshwater organisms. Environmental Toxicology and Chemistry. 29(9). 2104–2111. 22 indexed citations

Cormier, Susan M., et al.. (2008). Using field data and weight of evidence to develop water quality criteria. Integrated Environmental Assessment and Management. 4(4). 490–504. 47 indexed citations

Paul, John F., Susan M. Cormier, Walter Berry, et al.. (2008). Developing Water Quality Criteria for Suspended and Bedded Sediments. 2(1). 1–17. 24 indexed citations

Spehar, Robert L., et al.. (1999). Comparative Toxicity of Fluoranthene to Freshwater and Saltwater Species Under Fluorescent and Ultraviolet Light. Archives of Environmental Contamination and Toxicology. 37(4). 496–502. 67 indexed citations

Erickson, Russell J., et al.. (1998). EFFECTS OF LABORATORY TEST CONDITIONS ON THE TOXICITY OF SILVER TO AQUATIC ORGANISMS. Environmental Toxicology and Chemistry. 17(4). 572–572. 4 indexed citations

Elonen, Gregory E., Robert L. Spehar, Gary W. Holcombe, et al.. (1998). Comparative toxicity of 2,3,7,8-tetrachlorodibenzo-p-dioxin to seven freshwater fish species during early life-stage development. Environmental Toxicology and Chemistry. 17(3). 472–483. 180 indexed citations

Erickson, Russell J., et al.. (1998). Effects of laboratory test conditions on the toxicity of silver to aquatic organisms. Environmental Toxicology and Chemistry. 17(4). 572–578. 98 indexed citations

Elonen, Gregory E., Robert L. Spehar, Gary W. Holcombe, et al.. (1998). COMPARATIVE TOXICITY OF 2,3,7,8-TETRACHLORODIBENZO-p-DIOXIN TO SEVEN FRESHWATER FISH SPECIES DURING EARLY LIFE-STAGE DEVELOPMENT. Environmental Toxicology and Chemistry. 17(3). 472–472. 27 indexed citations

Bradbury, Steven P., et al.. (1993). Interim Report on Data and Methods for Assessment of 2,3,7,8-Tetrachlorodibenzo-p-dioxin Risks to Aquatic Life and Associated Wildlife. 53 indexed citations

10.

Spehar, Robert L. & James T. Fiandt. (1986). ACUTE AND CHRONIC EFFECTS OF WATER QUALITY CRITERIA-BASED METAL MIXTURES ON THREE AQUATIC SPECIES. Environmental Toxicology and Chemistry. 5(10). 917–917. 11 indexed citations

11.

Spehar, Robert L. & James T. Fiandt. (1986). Acute and chronic effects of water quality criteria-based metal mixtures on three aquatic species. Environmental Toxicology and Chemistry. 5(10). 917–931. 151 indexed citations

12.

Spehar, Robert L., et al.. (1985). Pentachlorophenol toxicity to amphipods and fathead minnows at different test pH values. Environmental Toxicology and Chemistry. 4(3). 389–397. 51 indexed citations

13.

Spehar, Robert L. & Anthony R. Carlson. (1984). Derivation of site-specific water quality criteria for cadmium and the St. Louis River Basin, Duluth, Minnesota. Environmental Toxicology and Chemistry. 3(4). 651–665. 30 indexed citations

14.

Spehar, Robert L., et al.. (1983). Toxicity of the synthetic pyrethroids, permethrin and AC 222, 705 and their accumulation in early life stages of fathead minnows and snails. Aquatic Toxicology. 3(2). 171–182. 41 indexed citations

15.

Spehar, Robert L., James T. Fiandt, Richard L. Anderson, & David L. DeFoe. (1980). Comparative toxicity of arsenic compounds and their accumulation in invertebrates and fish. Archives of Environmental Contamination and Toxicology. 9(1). 53–63. 82 indexed citations

16.

Spehar, Robert L., et al.. (1979). Toxicity and bioaccumulation of hexachlorocyclopentadiene, hexachloronorbornadiene and heptachloronorbornene in larval and early juvenile fathead minnows,Pimephales promelas. Bulletin of Environmental Contamination and Toxicology. 21(1). 576–583. 12 indexed citations

17.

Spehar, Robert L., Edward N. Leonard, & David L. DeFoe. (1978). Chronic Effects of Cadmium and Zinc Mixtures on Flagfish (Jordanella floridae). Transactions of the American Fisheries Society. 107(2). 354–360. 42 indexed citations

18.

Spehar, Robert L., Richard L. Anderson, & James T. Fiandt. (1978). Toxicity and bioaccumulation of cadmium and lead in aquatic invertebrates. Environmental Pollution (1970). 15(3). 195–208. 123 indexed citations

19.

Spehar, Robert L.. (1976). Cadmium and Zinc Toxicity to flagfish, Jordanella floridae. Journal of the Fisheries Research Board of Canada. 33(9). 1939–1945. 108 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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