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Manuel A. S. Graça

Manuel A. S. Graça

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Ecology and Evolution
Portugal
2026

D-Index & Metrics

Ecology and Evolution

D-Index
62
Citations
13233
World Ranking
2083
National Ranking
9

Manuel A. S. Graça publication distribution in Ecology and Evolution in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Ecology and Evolution in 2026. The highlighted bar marks where Manuel A. S. Graça sits on this spectrum.

37–41 publications: 2 scientists 42–46 publications: 9 scientists 47–51 publications: 10 scientists 52–56 publications: 31 scientists 57–61 publications: 56 scientists 62–66 publications: 91 scientists 67–71 publications: 92 scientists 72–76 publications: 127 scientists 77–81 publications: 173 scientists 82–86 publications: 236 scientists 87–91 publications: 227 scientists 92–96 publications: 240 scientists 97–101 publications: 333 scientists 102–106 publications: 280 scientists 107–111 publications: 300 scientists 112–116 publications: 285 scientists 117–121 publications: 305 scientists 122–126 publications: 287 scientists 127–131 publications: 278 scientists 132–136 publications: 289 scientists 137–141 publications: 273 scientists 142–146 publications: 262 scientists 147–151 publications: 246 scientists 152–156 publications: 235 scientists 157–161 publications: 205 scientists 162–166 publications: 199 scientists 167–171 publications: 174 scientists 172–176 publications: 164 scientists 177–181 publications: 173 scientists 182–186 publications: 189 scientists 187–191 publications: 170 scientists 192–196 publications: 139 scientists 197–201 publications: 128 scientists 202–206 publications: 117 scientists 207–211 publications: 115 scientists 212–216 publications: 107 scientists 217–221 publications: 124 scientists 222–226 publications: 81 scientists 227–231 publications: 82 scientists 232–236 publications: 85 scientists 237–241 publications: 75 scientists 242–246 publications: 66 scientists 247–251 publications: 81 scientists 252–256 publications: 69 scientists 257–261 publications: 70 scientists 262–266 publications: 55 scientists 267–271 publications: 64 scientists 272–276 publications: 49 scientists 277–281 publications: 48 scientists 282–286 publications: 44 scientists 287–291 publications: 45 scientists 292–296 publications: 36 scientists 297–301 publications: 39 scientists 302–306 publications: 38 scientists 307–311 publications: 30 scientists 312–316 publications: 34 scientists 317–321 publications: 25 scientists 322–326 publications: 22 scientists 327–331 publications: 28 scientists 332–336 publications: 30 scientists 337–341 publications: 22 scientists 342–346 publications: 30 scientists 347–351 publications: 26 scientists 352–356 publications: 22 scientists 357–361 publications: 29 scientists 362–366 publications: 21 scientists 367–371 publications: 12 scientists 372–376 publications: 18 scientists 377–381 publications: 17 scientists 382–386 publications: 13 scientists 387–391 publications: 21 scientists 392–396 publications: 13 scientists 397–401 publications: 10 scientists 402–406 publications: 15 scientists 407–411 publications: 8 scientists 412–416 publications: 9 scientists 417–421 publications: 8 scientists 422–426 publications: 4 scientists 427–431 publications: 10 scientists 432–436 publications: 10 scientists 437–441 publications: 5 scientists 442–446 publications: 4 scientists 447–451 publications: 10 scientists 452–456 publications: 2 scientists 457–461 publications: 4 scientists 462–466 publications: 7 scientists 467–471 publications: 7 scientists 472–476 publications: 6 scientists 477–481 publications: 6 scientists 482–486 publications: 3 scientists 487–491 publications: 3 scientists 492–496 publications: 4 scientists 497–501 publications: 4 scientists 502–506 publications: 8 scientists 507–511 publications: 5 scientists 512–516 publications: 4 scientists 517–521 publications: 5 scientists 522–526 publications: 4 scientists 527–530 publications: 5 scientists 531+ publications: 100 scientists
37 publications 531+

This scientist: 163 publications — 59th percentile

59% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 531 publications or more.

Manuel A. S. Graça D-index placement in Ecology and Evolution in 2026

The chart shows the D-index (discipline H-index) distribution of Ecology and Evolution scientists ranked by Research.com in 2026. The highlighted bar marks where Manuel A. S. Graça sits on this spectrum.

30 D-Index: 95 scientists 31 D-Index: 123 scientists 32 D-Index: 191 scientists 33 D-Index: 245 scientists 34 D-Index: 252 scientists 35 D-Index: 244 scientists 36 D-Index: 249 scientists 37 D-Index: 244 scientists 38 D-Index: 254 scientists 39 D-Index: 254 scientists 40 D-Index: 280 scientists 41 D-Index: 274 scientists 42 D-Index: 266 scientists 43 D-Index: 233 scientists 44 D-Index: 248 scientists 45 D-Index: 208 scientists 46 D-Index: 201 scientists 47 D-Index: 213 scientists 48 D-Index: 207 scientists 49 D-Index: 172 scientists 50 D-Index: 209 scientists 51 D-Index: 199 scientists 52 D-Index: 153 scientists 53 D-Index: 169 scientists 54 D-Index: 163 scientists 55 D-Index: 148 scientists 56 D-Index: 120 scientists 57 D-Index: 146 scientists 58 D-Index: 137 scientists 59 D-Index: 140 scientists 60 D-Index: 104 scientists 61 D-Index: 119 scientists 62 D-Index: 118 scientists 63 D-Index: 99 scientists 64 D-Index: 77 scientists 65 D-Index: 100 scientists 66 D-Index: 86 scientists 67 D-Index: 83 scientists 68 D-Index: 75 scientists 69 D-Index: 94 scientists 70 D-Index: 57 scientists 71 D-Index: 68 scientists 72 D-Index: 59 scientists 73 D-Index: 63 scientists 74 D-Index: 66 scientists 75 D-Index: 60 scientists 76 D-Index: 42 scientists 77 D-Index: 49 scientists 78 D-Index: 39 scientists 79 D-Index: 37 scientists 80 D-Index: 43 scientists 81 D-Index: 41 scientists 82 D-Index: 45 scientists 83 D-Index: 34 scientists 84 D-Index: 40 scientists 85 D-Index: 35 scientists 86 D-Index: 55 scientists 87 D-Index: 24 scientists 88 D-Index: 24 scientists 89 D-Index: 30 scientists 90 D-Index: 23 scientists 91 D-Index: 25 scientists 92 D-Index: 27 scientists 93 D-Index: 27 scientists 94 D-Index: 13 scientists 95 D-Index: 23 scientists 96 D-Index: 12 scientists 97 D-Index: 14 scientists 98 D-Index: 19 scientists 99 D-Index: 16 scientists 100 D-Index: 14 scientists 101 D-Index: 5 scientists 102 D-Index: 21 scientists 103 D-Index: 16 scientists 104 D-Index: 10 scientists 105 D-Index: 7 scientists 106 D-Index: 7 scientists 107 D-Index: 7 scientists 108 D-Index: 6 scientists 109 D-Index: 9 scientists 110 D-Index: 11 scientists 111 D-Index: 12 scientists 112 D-Index: 9 scientists 113 D-Index: 7 scientists 114 D-Index: 3 scientists 115 D-Index: 8 scientists 116 D-Index: 5 scientists 117 D-Index: 11 scientists 118 D-Index: 4 scientists 119 D-Index: 2 scientists 120 D-Index: 5 scientists 121+ D-Index: 100 scientists
30 D-Index 121+

This scientist: 62 D-Index — 76th percentile

76% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 121 D-Index or more.

Research.com Recognitions

  • 2026 - Research.com Ecology and Evolution in Portugal Leader Award
  • 2025 - Research.com Ecology and Evolution in Portugal Leader Award

Overview

Manuel A. S. Graça is affiliated with the University of Coimbra in Portugal, focusing primarily on Environmental Science. Their research spans multiple subfields including Ecology, Nature and Landscape Conservation, Water Science and Technology, Environmental Chemistry, and Soil Science.

The scholar has contributed extensively to topics related to freshwater ecosystems, with particular attention to freshwater macroinvertebrate diversity and ecology, fish ecology and management studies, aquatic invertebrate ecology and behavior, hydrology and sediment transport processes, hydrology and watershed management studies, soil and water nutrient dynamics, and isotope analysis in ecology.

Their recent papers include:

  • The recovery of European freshwater biodiversity has come to a halt (2023, Nature)
  • Impacts of detritivore diversity loss on instream decomposition are greatest in the tropics (2021, Nature Communications)
  • Latitude dictates plant diversity effects on instream decomposition (2021, Science Advances)
  • Invasion of temperate deciduous broadleaf forests by N-fixing tree species - consequences for stream ecosystems (2021, Biological reviews/Biological reviews of the Cambridge Philosophical Society)
  • A comparison of decomposition rates and biological colonization of leaf litter from tropical and temperate origins (2021, Aquatic Ecology)

Frequent coauthors collaborating with Manuel A. S. Graça include:

  • Marcos Callisto
  • Verónica Ferreira
  • Brendan G. McKie
  • Elvira de Eyto
  • Timo Muotka

Publications are commonly found in several scientific journals, notably:

  • Hydrobiologia
  • Limnetica
  • Nature
  • Nature Communications
  • Science Advances

Best Publications

  • The Role of Invertebrates on Leaf Litter Decomposition in Streams – a Review

    Manuel A.S. Graça

  • Continental-scale effects of nutrient pollution on stream ecosystem functioning.

    Guy Woodward;Guy Woodward;Mark O Gessner;Paul S Giller;Vladislav Gulis

  • Methods to Study Litter Decomposition: A Practical Guide

    Manuel A. S. Graça;Felix Bärlocher;Mark O. Gessner

  • A global experiment suggests climate warming will not accelerate litter decomposition in streams but might reduce carbon sequestration

    Luz Boyero;Richard G. Pearson;Mark O. Gessner;Mark O. Gessner;Leon A. Barmuta

  • The recovery of European freshwater biodiversity has come to a halt

    Unknown

  • Stimulation of leaf litter decomposition and associated fungi and invertebrates by moderate eutrophication : implications for stream assessment

    V. Gulis;V. Ferreira;M. A. S. Graça

  • A meta-analysis of the effects of nutrient enrichment on litter decomposition in streams

    Verónica Ferreira;Bastien Castagneyrol;Bastien Castagneyrol;Julia Koricheva;Vladislav Gulis

  • Whole-stream nitrate addition affects litter decomposition and associated fungi but not invertebrates

    Verónica Ferreira;Vladislav Gulis;Vladislav Gulis;Manuel A. S. Graça

  • Global distribution of a key trophic guild contrasts with common latitudinal diversity patterns.

    Luz Boyero;Luz Boyero;Richard G. Pearson;David Dudgeon;Manuel A. S. Graça

  • Methods to Study Litter Decomposition

    Manuel A.S. Graça;Felix Bärlocher;Mark O. Gessner

  • Effects of eucalyptus afforestation on leaf litter dynamics and macroinvertebrate community structure of streams in Central Portugal

    M. Abelho;M. A. S. Graça

  • Diversity and activity of aquatic fungi under low oxygen conditions

    A. O. Medeiros;A. O. Medeiros;C. Pascoal;M. A. S. Graça

  • Importance of fungi in the diet of Gammarus pulex and Asellus aquaticus : II. Effects on growth, reproduction and physiology.

    M. A.S. Graça;L. Maltby;Peter Calow

  • Leaf Barriers to Fungal Colonization and Shredders (Tipula lateralis) Consumption of Decomposing Eucalyptus globulus.

    C. Canhoto;M.A.S. Graça

  • Global patterns and drivers of ecosystem functioning in rivers and riparian zones

    Scott D. Tiegs;David M. Costello;Mark W. Isken;Guy Woodward

  • Biotic and abiotic variables influencing plant litter breakdown in streams: a global study.

    Luz Boyero;Richard G. Pearson;Cang Hui;Cang Hui;Mark O. Gessner;Mark O. Gessner

  • Importance of fungi in the diet of Gammarus pulex and Asellus aquaticus I: feeding strategies

    M A S Graça;Lorraine Maltby;P Calow

  • Decomposition of Eucalyptus globulus leaves and three native leaf species (Alnus glutinosa, Castanea sativa and Quercus faginea) in a Portuguese low order stream

    Cristina Canhoto;Manuel A. S. Graça

  • Global patterns of stream detritivore distribution: implications for biodiversity loss in changing climates

    Luz Boyero;Richard G. Pearson;David Dudgeon;Verónica Ferreira

  • Effects of Eucalyptus Plantations on Detritus, Decomposers, and Detritivores in Streams

    Manuel A S Graça;Jesús Pozo;Cristina Canhoto;Arturo Elosegi

  • Exotic riparian vegetation lowers fungal diversity but not leaf decomposition in Portuguese streams

    Felix Bärlocher;Manuel A. S. Graça

  • Riparian plant litter quality increases with latitude

    Luz Boyero;Manuel A. S. Graca;Alan M. Tonin;Javier Perez

Frequent Co-Authors

Verónica Ferreira
Verónica Ferreira University of Coimbra
Mark O. Gessner
Mark O. Gessner Technical University of Berlin
Eric Chauvet
Eric Chauvet Paul Sabatier University
Luz Boyero
Luz Boyero University of the Basque Country
Maria João Feio
Maria João Feio University of Coimbra
Marcos Callisto
Marcos Callisto Universidade Federal de Minas Gerais
Andrea C. Encalada
Andrea C. Encalada Universidad San Francisco de Quito
José F. Gonçalves
José F. Gonçalves University of Brasília
Catherine M. Yule
Catherine M. Yule University of the Sunshine Coast
Arturo Elosegi
Arturo Elosegi University of the Basque Country

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