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Claudio Leonzio

Claudio Leonzio

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 34 9452 9050 220 216 146 4452

Claudio Leonzio publications per year

The chart shows the history of publications by Claudio Leonzio between 1978 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Claudio Leonzio published across 48 years, from 1978 to 2025, averaging 3.3 papers a year. Output peaked at 11 publications in 1992. 2 of the 157 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1978 to 2025. Vertical axis: number of publications, 0 to 11. Peak 11 publications in 1992. 1978: 1 publication 1979: 0 publications 1980: 0 publications 1981: 1 publication 1982: 1 publication 1983: 1 publication 1984: 3 publications 1985: 2 publications 1986: 9 publications 1987: 2 publications 1988: 5 publications 1989: 10 publications 1990: 6 publications 1991: 6 publications 1992: 11 publications 1993: 6 publications 1994: 4 publications 1995: 7 publications 1996: 5 publications 1997: 3 publications 1998: 5 publications 1999: 3 publications 2000: 1 publication 2001: 3 publications 2002: 9 publications 2003: 6 publications 2004: 5 publications 2005: 7 publications 2006: 4 publications 2007: 1 publication 2008: 2 publications 2009: 1 publication 2010: 1 publication 2011: 4 publications 2012: 3 publications 2013: 2 publications 2014: 1 publication 2015: 1 publication 2016: 1 publication 2017: 2 publications 2018: 2 publications 2019: 1 publication 2020: 6 publications 2021: 1 publication 2022: 0 publications 2023: 0 publications 2024: 0 publications 2025: 2 publications
1978 2025

157 publications in total across all disciplines

View publications per year as a table
Claudio Leonzio: publications per year, 1978 to 2025
Year Publications
1978 1
1979 0
1980 0
1981 1
1982 1
1983 1
1984 3
1985 2
1986 9
1987 2
1988 5
1989 10
1990 6
1991 6
1992 11
1993 6
1994 4
1995 7
1996 5
1997 3
1998 5
1999 3
2000 1
2001 3
2002 9
2003 6
2004 5
2005 7
2006 4
2007 1
2008 2
2009 1
2010 1
2011 4
2012 3
2013 2
2014 1
2015 1
2016 1
2017 2
2018 2
2019 1
2020 6
2021 1
2022 0
2023 0
2024 0
2025 2
Total 157
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Claudio Leonzio 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 Claudio Leonzio 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, 141–150 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: 146 publications — 39th percentile

39% 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
141–150 541 146
151–160 539
161–170 444
171–180 444
181–190 400
191–200 377
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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Claudio Leonzio 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 Claudio Leonzio 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, 34 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: 34 D-Index — 3rd percentile

3% 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 34
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
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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Overview

Claudio Leonzio is affiliated with the University of Siena in Italy. Their research primarily centers on environmental science, with a strong emphasis on health, toxicology, and mutagenesis. The scientist has contributed to multiple studies related to environmental toxicology and ecotoxicology, mercury impact and mitigation, toxic organic pollutants, and heavy metal exposure and toxicity.

Their recent publications span several journals and research areas. Notable papers include:

  • Assessment of the effectiveness of a novel BioFilm-Membrane BioReactor oil-polluted wastewater treatment technology by applying biomarkers in the mussel Mytilus galloprovincialis, 2021, Aquatic Toxicology
  • Trace elements levels in muscle and liver of a rarely investigated large pelagic fish: The Mediterranean spearfish Tetrapturus belone (Rafinesque, 1810), 2020, Marine Pollution Bulletin
  • Production of methylmercury by sulphate-reducing bacteria in sediments from the orbetello lagoon in presence of high macroalgal loads, 2020, Ecological Questions
  • Drawing the baseline of trace element levels in the vulnerable Mediterranean osprey Pandion haliaetus: variations by breeding location, habitats, and egg components, 2020, Environmental Science and Pollution Research
  • Assessing the Effect of Contaminated and Restored Marine Sediments in Different Experimental Mesocosms Using an Integrated Approach and Mytilus galloprovincialis as a Model, 2020, Marine Biotechnology

The frequent co-authors in Claudio Leonzio's work include Stefania Ancora, Nicola Bianchi, Ilaria Caliani, Giuseppe Mancini, and Simone Cappello.

Publication activity often appears in Environmental Science and Pollution Research, Aquatic Toxicology, Marine Pollution Bulletin, Ecological Questions, and Marine Biotechnology.

The major research topics Claudio Leonzio addresses are:

  • Environmental Toxicology and Ecotoxicology
  • Mercury impact and mitigation studies
  • Toxic Organic Pollutants Impact
  • Heavy Metal Exposure and Toxicity
  • Heavy metals in environment
  • Microbial bioremediation and biosurfactants
  • Marine animal studies overview

Claudio Leonzio's work illustrates a detailed involvement in understanding trace elements, contaminants, and their effects on marine and environmental health, contributing broadly to the fields of pollution and ecotoxicology within environmental science.

Best Publications

  • Heavy metals and glutathione metabolism in mussel tissues

    L. Canesi;A. Viarengo;C. Leonzio;M. Filippelli

  • Nondestructive Biomarkers in Vertebrates

    M. Cristina Fossi;Claudio Leonzio

  • Intracellular storage of mercury and selenium in different marine vertebrates

    Unknown

  • The effects of heavy metal contamination on the soil arthropod community of a shooting range.

    Massimo Migliorini;Gaia Pigino;Nicola Bianchi;Fabio Bernini

  • Heavy metals and selenium in stranded dolphins of the northern Tyrrhenian (NW Mediterranean).

    Claudio Leonzio;Silvano Focardi;Cristina Fossi

  • The use of non-destructive biomarker in Mediterranean cetaceans: Preliminary data on MFO activity in skin biopsy

    M. Cristina Fossi;Letizia Marsili;Claudio Leonzio;Giuseppe Notarbartolo Di Sciara

  • Leaf morphology and macronutrients in broadleaved trees in central Italy

    Filippo Bussotti;Francesca Borghini;Carlo Celesti;Claudio Leonzio

  • Comparison between concentrations of mercury and other contaminants in eggs and tissues of cory's shearwater calonectris diomedea collected on atlantic and mediterranean islands

    A. Renzoni;S. Focardi;C. Fossi;C. Leonzio

  • Sometimes Sperm Whales (Physeter macrocephalus) Cannot Find Their Way Back to the High Seas: A Multidisciplinary Study on a Mass Stranding

    Sandro Mazzariol;Giovanni Di Guardo;Antonio Petrella;Letizia Marsili

  • Effects of sublethal, environmentally relevant concentrations of hexavalent chromium in the gills of Mytilus galloprovincialis

    Caterina Ciacci;Cristina Barmo;Gabriella Gallo;Maria Maisano

  • Trace elements in striped dolphins (Stenella coeruleoalba) from the western Mediterranean.

    F. Monaci;A. Borrel;C. Leonzio;L. Marsili

  • Interspecies differences in mixed function oxidase activity in birds: Relationship between feeding habits, detoxication activities and organochlorine accumulation

    M.C. Fossi;A. Massi;L. Lari;L. Marsili

  • Variations in polychlorinated biphenyl congener composition in eggs of Mediterranean water birds in relation to their position in the food chain.

    S. Focardi;C. Leonzio;C. Fossi

  • Organotropism of persistent organic pollutants and heavy metals in the Greenland shark Somniosus microcephalus in NE Greenland.

    Simonetta Corsolini;Stefania Ancora;Nicola Bianchi;Giacomo Mariotti

  • Use of nondestructive biomarkers and residue analysis to assess the health status of endangered species of pinnipeds in the south-west Atlantic

    Maria Cristina Fossi;Letizia Marsili;M. Junin;H. Castello

  • Assumption and elimination of trace elements in Adélie penguins from Antarctica: a preliminary study.

    Stefania Ancora;Valerio Volpi;Silvia Olmastroni;Silvano Focardi

  • PCB congeners, hexachlorobenzene, and organochlorine insecticides in human fat in Italy.

    S. Focardi;C. Fossi;C. Leonzio;R. Romei

  • Soil communities (Acari Oribatida; Hexapoda Collembola) in a clay pigeon shooting range

    Massimo Migliorini;Gaia Pigino;Tancredi Caruso;Pietro Paolo Fanciulli

  • Heavy metals in organisms from the northern Tyrrhenian sea.

    C. Leonzio;E. Bacci;S. Focardi;A. Renzoni

  • Serum esterase inhibition in birds: a nondestructive biomarker to assess organophosphorus and carbamate contamination.

    M. Cristina Fossi;Claudio Leonzio;Alberto Massi;Lorena Lari

  • Lead, mercury, cadmium and selenium in two species of gull feeding on inland dumps, and in marine areas.

    Claudio Leonzio;Cristina Fossi;Silvano Focardi

  • Chlorinated hydrocarbons in the tissues of South Polar Skuas (Catharacta maccormicki) and Adélie Penguins (Pygoscelis adeliea) from Ross Sea, Antarctica

    G.S. Court;L.S. Davis;S. Focardi;R. Bargargli

  • Trace metal assessment in sediment molluscs and reed leaves in the Bay of Follonica (Italy)

    Roberto Bargagli;F. Baldi;Claudio Leonzio

  • Complementary accumulation of selenium and mercury in fish muscle

    Claudio Leonzio;Silvano Focardi;Eros Bacci

Frequent Co-Authors

Maria Cristina Fossi
Maria Cristina Fossi University of Siena
Letizia Marsili
Letizia Marsili University of Siena
Silvano Focardi
Silvano Focardi University of Siena
Simonetta Corsolini
Simonetta Corsolini University of Siena
Ricardo Barra
Ricardo Barra University of Concepción
Filippo Bussotti
Filippo Bussotti University of Florence
Teresa Romeo
Teresa Romeo Stazione Zoologica Anton Dohrn
Marco Ferretti
Marco Ferretti University of Camerino
Maria Cristina Gambi
Maria Cristina Gambi National Institute of Oceanography and Applied Geophysics
Alessandro Chiarucci
Alessandro Chiarucci University of Bologna

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