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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 47 5803 5564 35 35 231 8155

Walter Collischonn publications per year

The chart shows the history of publications by Walter Collischonn between 1997 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Walter Collischonn published across 29 years, from 1997 to 2025, averaging 10.1 papers a year. Output peaked at 26 publications in 2017. 18 of the 292 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1997 to 2025. Vertical axis: number of publications, 0 to 26. Peak 26 publications in 2017. 1997: 1 publication 1998: 1 publication 1999: 0 publications 2000: 1 publication 2001: 3 publications 2002: 0 publications 2003: 4 publications 2004: 0 publications 2005: 4 publications 2006: 10 publications 2007: 13 publications 2008: 17 publications 2009: 8 publications 2010: 8 publications 2011: 14 publications 2012: 12 publications 2013: 17 publications 2014: 12 publications 2015: 19 publications 2016: 13 publications 2017: 26 publications 2018: 12 publications 2019: 18 publications 2020: 11 publications 2021: 15 publications 2022: 14 publications 2023: 21 publications 2024: 9 publications 2025: 9 publications
1997 2025

292 publications in total across all disciplines

View publications per year as a table
Walter Collischonn: publications per year, 1997 to 2025
Year Publications
1997 1
1998 1
1999 0
2000 1
2001 3
2002 0
2003 4
2004 0
2005 4
2006 10
2007 13
2008 17
2009 8
2010 8
2011 14
2012 12
2013 17
2014 12
2015 19
2016 13
2017 26
2018 12
2019 18
2020 11
2021 15
2022 14
2023 21
2024 9
2025 9
Total 292
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Walter Collischonn publications per year - data summary

  • Walter Collischonn, a Environmental Sciences scholar from Federal University of Rio Grande do Sul, has 292 publications recorded across 29 years, from 1997 to 2025.
  • The oldest publication on record dates to 1997 and the most recent to 2025.
  • The most productive year is 2017, with 26 publications.
  • The least productive years with any output are 1997, 1998 and 2000, with 1 publication each.
  • 3 of the 29 years in the span carry no publications at all (1999, 2002 and 2004).
  • The rate of publication averages 10.1 papers per year over the whole span, or 11.2 per year counting only the 26 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 68 publications, 23% of the career total.
  • Split into equal eras - 1997-2006: 24 publications (2.4 per year); 2007-2016: 133 publications (13.3 per year); 2017-2025: 135 publications (15.0 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Walter Collischonn 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 Walter Collischonn 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, 231–240 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: 231 publications — 73rd percentile

73% 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
201–210 318
211–220 282
221–230 263
231–240 220 231
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
Download as CSV

Walter Collischonn publication distribution in Environmental Sciences in 2026 - data summary

  • The chart plots the publication count of all 9,676 Environmental Sciences scientists ranked by Research.com in 2026, grouped into 66 ranges running from 41–50 to 690+ publications.
  • Walter Collischonn, a Environmental Sciences scholar from Federal University of Rio Grande do Sul, records 231 publications - the 73rd percentile of the discipline.
  • 73% of ranked Environmental Sciences scientists score the same or lower than Walter Collischonn, and about 27% score higher.
  • The median of the discipline falls in the 161–170 publications range, and Walter Collischonn ranks above the median.
  • The most crowded range is 121–130 publications, holding 617 scientists (6% of the field).
  • 67% of the field sits in the lowest quarter of the value range (up to 201–210 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 690 publications or more, 100 scientists in all (1% of the field).

Walter Collischonn 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 Walter Collischonn 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, 47 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: 47 D-Index — 42nd percentile

42% 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 47
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
Download as CSV

Walter Collischonn D-index placement in Environmental Sciences in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 9,676 Environmental Sciences scientists ranked by Research.com in 2026, grouped into 97 ranges running from 30 to 126+ D-Index.
  • Walter Collischonn, a Environmental Sciences scholar from Federal University of Rio Grande do Sul, records 47 D-Index - the 42nd percentile of the discipline.
  • 42% of ranked Environmental Sciences scientists score the same or lower than Walter Collischonn, and about 58% score higher.
  • The median of the discipline falls in the 51 D-Index range, and Walter Collischonn ranks below the median.
  • The most crowded range is 45 D-Index, holding 348 scientists (4% of the field).
  • 59% of the field sits in the lowest quarter of the value range (up to 54 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 126 D-Index or more, 92 scientists in all (<1% of the field).

Overview

Walter Collischonn is affiliated with the Federal University of Rio Grande do Sul in Brazil. Their research primarily focuses on environmental science, spanning several specialized subfields such as global and planetary change, water science and technology, ecology, environmental engineering, and ocean engineering.

The topics explored in their work cover diverse aspects related to hydrology, including hydrology and watershed management studies, flood risk assessment and management, hydrology and sediment transport processes, hydrology and drought analysis, water resources management and optimization, plant water relations and carbon dynamics, and soil erosion and sediment transport.

Among their recent publications are:

  • Assimilation of future SWOT-based river elevations, surface extent observations and discharge estimations into uncertain global hydrological models, 2020, Journal of Hydrology
  • How much inundation occurs in the Amazon River basin?, 2022, Remote Sensing of Environment
  • Climate change may impair electricity generation and economic viability of future Amazon hydropower, 2021, Global Environmental Change
  • Regional scale hydrodynamic modeling of the river-floodplain-reservoir continuum, 2021, Journal of Hydrology
  • A Modeling Assessment of Large-Scale Hydrologic Alteration in South American Pantanal Due to Upstream Dam Operation, 2020, Frontiers in Environmental Science

Collischonn frequently publishes in notable venues, including:

  • Revista Brasileira de Recursos Hídricos
  • Zenodo (CERN European Organization for Nuclear Research)
  • Journal of Hydrology
  • Water Resources Research
  • Hydrological Sciences Journal

The scientist collaborates often with other researchers. Their frequent co-authors include:

  • Rodrigo Cauduro Dias de Paiva
  • Fernando Mainardi Fan
  • Ayan Santos Fleischmann
  • Anderson Ruhoff
  • Vinícius Alencar Siqueira

Best Publications

  • Large‐scale hydrologic and hydrodynamic modeling of the Amazon River basin

    Rodrigo Cauduro Dias de Paiva;Rodrigo Cauduro Dias de Paiva;Diogo Costa Buarque;Walter Collischonn;Marie-Paule Bonnet

  • The MGB-IPH model for large-scale rainfall—runoff modelling

    Walter Collischonn;Daniel Allasia;Benedito C. Da Silva;Carlos E. M. Tucci

  • Daily hydrological modeling in the Amazon basin using TRMM rainfall estimates

    Bruno Collischonn;Walter Collischonn;Carlos Eduardo Morelli Tucci

  • Large scale hydrologic and hydrodynamic modeling using limited data and a GIS based approach

    Rodrigo C.D. Paiva;Walter Collischonn;Carlos E.M. Tucci

  • Simulação Hidrológica de Grandes Bacias

    Walter Collischonn;Carlos Eduardo Morelli Tucci

  • Further evidence of changes in the hydrological regime of the River Paraguay: part of a wider phenomenon of climate change?

    W. Collischonn;C.E.M. Tucci;R.T. Clarke

  • A direction dependent least-cost-path algorithm for roads and canals

    Walter Collischonn;Jorge Victor Pilar

  • Forecasting River Uruguay flow using rainfall forecasts from a regional weather-prediction model

    Walter Collischonn;Reinaldo Haas;Ivanilto Andreolli;Carlos Eduardo Morelli Tucci

  • MGB-IPH model for hydrological and hydraulic simulation of large floodplain river systems coupled with open source GIS

    Paulo Rógenes Monteiro Pontes;Paulo Rógenes Monteiro Pontes;Fernando Mainardi Fan;Ayan Santos Fleischmann;Rodrigo Cauduro Dias de Paiva

  • Toward continental hydrologic–hydrodynamic modeling in South America

    Vinícius A. Siqueira;Rodrigo C. D. Paiva;Ayan S. Fleischmann;Fernando M. Fan

  • Stage-discharge rating curves based on satellite altimetry and modeled discharge in the Amazon basin

    Adrien Paris;Adrien Paris;Rodrigo Dias de Paiva;Joecila Santos da Silva;Daniel Medeiros Moreira;Daniel Medeiros Moreira

  • Assessment of the MODIS global evapotranspiration algorithm using eddy covariance measurements and hydrological modelling in the Rio Grande basin

    A. L. Ruhoff;A. R. Paz;L. E.O.C. Aragao;Qiaozhen Mu

  • Gis-based procedures for hydropower potential spotting

    Dante G. Larentis;Walter Collischonn;Francisco Olivera;Carlos E.M. Tucci

  • Uncertainty in climate change impacts on water resources in the Rio Grande Basin, Brazil

    M. T. Nóbrega;W. Collischonn;C. E. M. Tucci;A. R. Paz

  • Validation of a full hydrodynamic model for large‐scale hydrologic modelling in the Amazon

    Rodrigo C. D. Paiva;Walter Collischonn;Diogo Costa Buarque

  • Assimilating in situ and radar altimetry data into a large-scale hydrologic-hydrodynamic model for streamflow forecast in the Amazon

    R. C. D. Paiva;R. C. D. Paiva;W. Collischonn;M.-P. Bonnet;L. G. G. de Gonçalves

  • A MODIS-Based Energy Balance to Estimate Evapotranspiration for Clear-Sky Days in Brazilian Tropical Savannas

    Anderson L. Ruhoff;Adriano Rolim da Paz;Walter Collischonn;Luiz Eduardo Oliveira E. Cruz de Aragão

  • Defining parameters for Eckhardt's digital baseflow filter

    Walter Collischonn;Fernando Mainardi Fan

  • Can regional to continental river hydrodynamic models be locally relevant? A cross-scale comparison

    Ayan Fleischmann;Rodrigo Paiva;Walter Collischonn

  • Large-scale modelling of channel flow and floodplain inundation dynamics and its application to the Pantanal (Brazil)

    Adriano Rolim da Paz;Walter Collischonn;Carlos E. M. Tucci;Carlos R. Padovani

  • Coupled Hydrologic-Hydraulic Modeling of the Upper Paraguay River Basin

    J. M. Bravo;D. Allasia;A. R. Paz;W. Collischonn

  • Toward continental hydrologic-hydrodynamic modeling in South America

    R. C. D. Paiva;V. A. Siqueira;A. S. Fleischmann;F. M. Fan

Frequent Co-Authors

Marie-Paule Bonnet
Marie-Paule Bonnet Institut de Recherche pour le Développement
Stéphane Calmant
Stéphane Calmant Institut de Recherche pour le Développement
Humberto Ribeiro da Rocha
Humberto Ribeiro da Rocha Universidade de São Paulo
Luiz E. O. C. Aragão
Luiz E. O. C. Aragão National Institute for Space Research
Fabrice Papa
Fabrice Papa Laboratoire d’Etudes en Géophysique et Océanographie Spatiales
Jean-Loup Guyot
Jean-Loup Guyot Institut de Recherche pour le Développement
Barry Croke
Barry Croke Australian National University
Qiaozhen Mu
Qiaozhen Mu Science Systems & Applications, Inc.
Steven W. Running
Steven W. Running University of Montana
Albrecht Weerts
Albrecht Weerts Wageningen University & Research

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