World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
58
Citations
13006
World Ranking
3247
National Ranking
251

Engineering and Technology

D-Index
51
Citations
10834
World Ranking
3819
National Ranking
255

Duncan Mara 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 Duncan Mara sits on this spectrum.

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: 283 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: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 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 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 203 publications — 65th percentile

65% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Duncan Mara 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 Duncan Mara sits on this spectrum.

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: 199 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: 19 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: 99 scientists
30 D-Index 125+

This scientist: 58 D-Index — 67th percentile

67% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Duncan Mara is affiliated with the University of Leeds in the United Kingdom. Their research primarily spans the fields of Environmental Science and Agricultural and Biological Sciences, with particular focus on subfields including Aquatic Science, Nature and Landscape Conservation, and Global and Planetary Change.

The main topics of their research work include Fish Biology and Ecology Studies, Fish Ecology and Management Studies, and Marine and Fisheries Research. These areas reflect a specialized interest in understanding aquatic ecosystems and the management of fish populations.

Duncan Mara has collaborated with several researchers, notably including Yunkai Li, David Mboglen, and Lianhuan Fan. Collaboration with these coauthors indicates a network focused on ecological and biological investigations related to marine and aquatic environments.

The scholar has published in venues such as the SSRN Electronic Journal. Their recent publication is titled Age, Growth, and Trophic Ecology of Two Deep-Sea Fish Diaphus watasei and Synagrops japonicus in the East China Sea, published in 2025. This work addresses aspects of age determination, growth dynamics, and feeding ecology of two deep-sea fish species.

  • Age, Growth, and Trophic Ecology of Two Deep-Sea Fish Diaphus watasei and Synagrops japonicus in the East China Sea (2025), SSRN Electronic Journal

The research scope as indicated by their publications and topics encompasses ecological patterns and processes in aquatic environments, contributing to knowledge relevant to environmental and fisheries science.

Best Publications

  • Sanitation and disease: health aspects of excreta and wastewater management.

    Richard G. Feachem;David J. Bradley;Hemda Garelick;D. Duncan Mara

  • Sanitation and health.

    Duncan Mara;Jon Lane;Beth Scott;David Trouba

  • Domestic Wastewater Treatment in Developing Countries

    D. Duncan Mara

  • Guidelines for the safe use of wastewater and excreta in agriculture and aquaculture. Measures for public health protection.

    D. Duncan Mara;Sandy Cairncross

  • Guidelines for the microbiological quality of treated wastewater used in agriculture: recommendations for revising WHO guidelines

    Ursula J. Blumenthal;D. Duncan Mara;Anne Peasey;Guillermo Ruiz-Palacios

  • Water Quality: Guidelines, Standards and Health

    Duncan Mara

  • Influence of pH, Oxygen, and Humic Substances on Ability of Sunlight To Damage Fecal Coliforms in Waste Stabilization Pond Water

    Thomas P. Curtis;D. Duncan Mara;Salomao A. Silva

  • Health risks in wastewater irrigation: comparing estimates from quantitative microbial risk analyses and epidemiological studies.

    D D Mara;P A Sleigh;U J Blumenthal;R M Carr

  • Guidelines for the safe use of wastewater and excreta in agriculture and aquaculture.

    D. Mara;S. Cairncross

  • Wastewater irrigation and health: assessing and mitigating risk in low-income countries

    Christopher A. Scott;Pay Drechsel;Liqa Raschid-Sally;Akissa Bahri

  • Analysis of Wastewater for Use in Agriculture: A Laboratory Manual of Parasitological and Bacteriological Techniques

    Rachel M. Ayres;D. Duncan Mara

  • Application of Cost Criteria for Selection of Municipal Wastewater Treatment Systems

    K. P. Tsagarakis;D. D. Mara;A. N. Angelakis

  • Drip irrigation with waste stabilisation pond effluents: Solving the problem of emitter fouling

    H. D. Taylor;R. K. X. Bastos;H. W. Pearson;D. D. Mara

  • Water, wastes, and health in hot climates

    Richard Feachem;Michael McGarry;D. Duncan Mara

  • Sewage Treatment in Hot Climates

    D. Duncan Mara

  • Water, sanitation and hygiene for the health of developing nations

    D.D. Mara

  • Management of domestic wastewater for reuse in irrigation

    Oscar Vazquez-Montiel;Nigel J. Horan;Duncan D. Mara

  • Physico-chemical parameters influencing faecal bacterial survival in waste stabilization ponds

    H. W. Pearson;D. D. Mara;S. W. Mills;D. J. Smallman

  • Dispersion and treatment performance analysis of an UASB reactor under different hydraulic loading rates

    M.R. Peña;D.D. Mara;G.P. Avella

  • Pro-poor sanitation technologies

    Charlotte Paterson;Duncan Mara;Tom Curtis

  • Guidelines for the safe use of wastewater in agriculture: revisiting WHO guidelines

    R.M. Carr;U.J. Blumenthal;D. Duncan Mara

Frequent Co-Authors

Thomas P. Curtis
Thomas P. Curtis Newcastle University
Pay Drechsel
Pay Drechsel International Water Management Institute
Andreas N. Angelakis
Andreas N. Angelakis Vodafone (United Kingdom)
Robert J. Newton
Robert J. Newton University of Leeds
Sandy Cairncross
Sandy Cairncross University of London
Christopher A. Scott
Christopher A. Scott University of Arizona
Andy Shilton
Andy Shilton Massey University
Anders Dalsgaard
Anders Dalsgaard University of Copenhagen
Robert C. Abaidoo
Robert C. Abaidoo Kwame Nkrumah University of Science and Technology
Jeffrey T. LeJeune
Jeffrey T. LeJeune The Ohio State University

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Related Online Degrees & Career Pathways

For students passionate about environmental sciences, exploring related fields can broaden career opportunities. Many choose to complement their knowledge with an online DSW programs in social work, which equip graduates to address environmental justice and community health issues.

Those seeking flexible, budget-friendly options might consider a budget friendly online general studies degree. This versatile choice allows students to tailor courses across disciplines, including environmental policy, communication, and sustainability.

For individuals new to higher education or looking for a smooth transition, some may explore the easiest bachelor degree programs, which provide foundational skills that can support further specialization in environmental sciences.

Finally, a focused technical path is available through a geology online degree, which offers in-depth knowledge of Earth systems and enhances understanding of environmental impacts and resource management.

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