World's Best Scientists 2026 revealed!
Ellie E. Prepas

Ellie E. Prepas

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Environmental Sciences
Canada
2023

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 66 2136 2039 80 74 193 12864
Biology and Biochemistry 66 8833 8147 306 281 185 12845

Ellie E. Prepas publications per year

The chart shows the history of publications by Ellie E. Prepas between 1978 and 2016, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ellie E. Prepas published across 39 years, from 1978 to 2016, averaging 4.9 papers a year. Output peaked at 16 publications in 2003. 4 of the 193 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1978 to 2016. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 2003. 1978: 2 publications 1979: 0 publications 1980: 0 publications 1981: 1 publication 1982: 1 publication 1983: 3 publications 1984: 3 publications 1985: 3 publications 1986: 2 publications 1987: 1 publication 1988: 11 publications 1989: 7 publications 1990: 13 publications 1991: 6 publications 1992: 4 publications 1993: 5 publications 1994: 4 publications 1995: 4 publications 1996: 7 publications 1997: 14 publications 1998: 3 publications 1999: 5 publications 2000: 10 publications 2001: 13 publications 2002: 7 publications 2003: 16 publications 2004: 2 publications 2005: 6 publications 2006: 7 publications 2007: 4 publications 2008: 13 publications 2009: 3 publications 2010: 2 publications 2011: 1 publication 2012: 2 publications 2013: 1 publication 2014: 3 publications 2015: 3 publications 2016: 1 publication
1978 2016

193 publications in total across all disciplines

View publications per year as a table
Ellie E. Prepas: publications per year, 1978 to 2016
Year Publications
1978 2
1979 0
1980 0
1981 1
1982 1
1983 3
1984 3
1985 3
1986 2
1987 1
1988 11
1989 7
1990 13
1991 6
1992 4
1993 5
1994 4
1995 4
1996 7
1997 14
1998 3
1999 5
2000 10
2001 13
2002 7
2003 16
2004 2
2005 6
2006 7
2007 4
2008 13
2009 3
2010 2
2011 1
2012 2
2013 1
2014 3
2015 3
2016 1
Total 193
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Ellie E. Prepas publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Ellie E. Prepas sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 66 bars. Horizontal axis: publications, 41–50 to 690+. Vertical axis: number of scientists, 0 to 617. Most scientists, 617, have 121–130 publications. The last bar groups every scientist with 690 publications or more. The highlighted bar, 191–200 publications, is where this scientist sits. 41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 282 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 26 scientists 501–510 publications: 17 scientists 511–520 publications: 19 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–689 publications: 4 scientists 690+ publications: 100 scientists
41–50 publications 690+

This scientist: 193 publications — 62nd percentile

62% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 690 publications or more.

View publications distribution as a table
Number of Environmental Sciences scientists by publication count, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
Publications Scientists This scientist
41–50 21
51–60 62
61–70 133
71–80 257
81–90 361
91–100 440
101–110 492
111–120 541
121–130 617
131–140 544
141–150 541
151–160 539
161–170 444
171–180 444
181–190 400
191–200 377 193
201–210 318
211–220 282
221–230 263
231–240 220
241–250 217
251–260 180
261–270 181
271–280 155
281–290 130
291–300 127
301–310 130
311–320 85
321–330 106
331–340 80
341–350 83
351–360 75
361–370 69
371–380 52
381–390 54
391–400 56
401–410 44
411–420 40
421–430 36
431–440 25
441–450 25
451–460 32
461–470 29
471–480 21
481–490 26
491–500 26
501–510 17
511–520 19
521–530 15
531–540 22
541–550 12
551–560 15
561–570 11
571–580 19
581–590 9
591–600 9
601–610 7
611–620 11
621–630 5
631–640 5
641–650 6
651–660 3
661–670 3
671–680 4
681–689 4
690+ 100
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Ellie E. Prepas D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Ellie E. Prepas sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 97 bars. Horizontal axis: D-Index, 30 to 126+. Vertical axis: number of scientists, 0 to 348. Most scientists, 348, have 45 D-Index. The last bar groups every scientist with 126 D-Index or more. The highlighted bar, 66 D-Index, is where this scientist sits. 30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 198 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 20 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125 D-Index: 9 scientists 126+ D-Index: 92 scientists
30 D-Index 126+

This scientist: 66 D-Index — 79th percentile

79% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 126 D-Index or more.

View D-Index distribution as a table
Number of Environmental Sciences scientists by D-index, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
D-Index Scientists This scientist
30 12
31 26
32 51
33 88
34 123
35 163
36 206
37 267
38 265
39 275
40 321
41 343
42 305
43 336
44 330
45 348
46 291
47 275
48 272
49 273
50 263
51 232
52 266
53 217
54 198
55 177
56 202
57 204
58 166
59 177
60 166
61 152
62 143
63 150
64 124
65 119
66 120 66
67 118
68 82
69 98
70 94
71 105
72 74
73 84
74 70
75 67
76 78
77 60
78 59
79 52
80 47
81 38
82 48
83 42
84 42
85 43
86 29
87 37
88 29
89 30
90 34
91 20
92 22
93 17
94 19
95 24
96 21
97 20
98 24
99 17
100 17
101 21
102 25
103 18
104 26
105 20
106 15
107 10
108 13
109 15
110 12
111 8
112 7
113 9
114 6
115 12
116 7
117 8
118 3
119 5
120 7
121 2
122 4
123 8
124 7
125 9
126+ 92
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Research.com Recognitions

  • 2023 - Research.com Environmental Sciences in Canada Leader Award

Overview

Ellie E. Prepas is affiliated with Lakehead University in Canada. Their academic career is primarily centered within this institution, contributing to its research environment.

There are no recent papers, co-authors, or frequent publication venues recorded for Ellie E. Prepas at this time. Similarly, no specific book publications have been documented in available data.

No main fields of study, subfields, or main topics of work have been identified or listed, limiting the detailing of research specialization or thematic focus.

Data does not indicate any awards or honors received by Ellie E. Prepas, so there is no information regarding recognitions or distinctions.

Best Publications

  • Hepatotoxic Cyanobacteria: A Review of the Biological Importance of Microcystins in Freshwater Environments

    Ronald W. Zurawell;Huirong Chen;Janice M. Burke;Ellie E. Prepas

  • Current Velocity and Its Effect on Aquatic Macrophytes in Flowing Waters.

    P. A. Chambers;E. E. Prepas;H. R. Hamilton;M. L. Bothwell

  • Individual specialization and trophic adaptability of northern pike ( Esox lucius ): an isotope and dietary analysis

    Catherine P. Beaudoin;William M. Tonn;Ellie E. Prepas;Leonard I. Wassenaar

  • Evaluation of Total Phosphorus as a Predictor of the Relative Biomass of Blue-green Algae with Emphasis on Alberta Lakes

    Annette M. Trimbee;E. E. Prepas

  • VARIABILITY OF THE HEPATOTOXIN MICROCYSTIN‐LR IN HYPEREUTROPHIC DRINKING WATER LAKES1

    Brian G. Kotak;Angeline K-Y. Lam;Ellie E. Prepas;Sandra L. Kenefick

  • Improvements in Quantifying the Phosphorus Concentration in Lake Water

    E. E. Prepas;F. H. Rigler

  • Effects of experimentally induced cyanobacterial blooms on crustacean zooplankton communities

    Anas Ghadouani;Bernadette Pinel‐Alloul;Ellie E. Prepas

  • Chemical control of hepatotoxic phytoplankton blooms: Implications for human health

    Angeline K.-Y. Lam;Ellie E. Prepas;David Spink;Steve E. Hrudey

  • Metal-PAH mixtures in the aquatic environment: a review of co-toxic mechanisms leading to more-than-additive outcomes.

    Patrick T. Gauthier;Warren P. Norwood;Ellie E. Prepas;Greg G. Pyle

  • Quantitative comparison of lake throughflow, residency, and catchment runoff using stable isotopes: modelling and results from a regional survey of Boreal lakes

    J.J. Gibson;E.E. Prepas;P. McEachern

  • Occurrence and toxicological evaluation of cyanobacterial toxins in Alberta lakes and farm dugouts

    Brian G. Kotak;Sandra L. Kenefick;David L. Fritz;Colin G. Rousseaux

  • Role of chemical and physical variables in regulating microcystin-LR concentration in phytoplankton of eutrophic lakes

    Brian G. Kotak;Angeline K.-Y. Lam;Ellie E. Prepas;Steve E. Hrudey

  • Hepatic and renal pathology of intraperitoneally administered microcystin-LR in rainbow trout (Oncorhynchus mykiss).

    Brian G. Kotak;Souleh Semalulu;David L. Fritz;Ellie E. Prepas

  • Microcystin-LR concentration in aquatic food web compartments from lakes of varying trophic status

    B. G. Kotak;R. W. Zurawell;E. E. Prepas;C. F. B. Holmes

  • Sugar‐frosted Daphnia: An improved fixation technique for Cladocera 1

    Ellie Prepas

  • Roots versus shoots in nutrient uptake by aquatic macrophytes in flowing waters

    P. A. Chambers;E. E. Prepas;M. L. Bothwell;H. R. Hamilton

  • Potential effects of climate change on aquatic ecosystems of the Great Plains of North America

    A. P. Covich;S. C. Fritz;P. J. Lamb;R. D. Marzolf

  • Anomalous, short‐term influx of water into seepage meters

    R. D. Shaw;E. E. Prepas

  • Toxin Release from Microcystis Aeruginosa after Chemical Treatment

    S. L. Kenefick;S. E. Hrudey;H. G. Peterson;E. E. Prepas

  • Selective foraging by the crayfish Orconectes virilis and its impact on macroinvertebrates

    John Mark Hanson;Patricia A. Chambers;Ellie E. Prepas

Frequent Co-Authors

Patricia A. Chambers
Patricia A. Chambers Environment and Climate Change Canada
Daniel W. Smith
Daniel W. Smith University of Alberta
Bernadette Pinel-Alloul
Bernadette Pinel-Alloul University of Montreal
Steve E. Hrudey
Steve E. Hrudey University of Alberta
William M. Tonn
William M. Tonn University of Alberta
Dolors Planas
Dolors Planas University of Quebec at Montreal
Charles F. B. Holmes
Charles F. B. Holmes University of Alberta
Mohamed Gamal El-Din
Mohamed Gamal El-Din University of Alberta
Cynthia A. Paszkowski
Cynthia A. Paszkowski University of Alberta
John J. Gibson
John J. Gibson University of Victoria

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