World's Best Scientists 2026 revealed!
Alexandra-Maria Klein

Alexandra-Maria Klein

D-Index & Metrics

Ecology and Evolution

D-Index
90
Citations
55826
World Ranking
457
National Ranking
35

Alexandra-Maria Klein 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 Alexandra-Maria Klein 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: 332 publications — 94th percentile

94% of scientists in this discipline score the same or lower.

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

Alexandra-Maria Klein 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 Alexandra-Maria Klein 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: 90 D-Index — 95th percentile

95% of scientists in this discipline score the same or lower.

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

Overview

Alexandra-Maria Klein is affiliated with the University of Freiburg in Germany. Their research spans Agricultural and Biological Sciences as well as Environmental Science, with a strong focus on ecology, insect science, genetics, plant science, and nature and landscape conservation.

Their work covers a variety of topics including plant and animal studies, insect and pesticide research, insect and arachnid ecology and behavior, ecology and vegetation dynamics studies, plant parasitism and resistance, forest ecology and biodiversity studies, as well as conservation, biodiversity, and resource management.

Recent papers by Alexandra-Maria Klein include the following:

  • International scientists formulate a roadmap for insect conservation and recovery, 2020, Nature Ecology & Evolution
  • Critical links between biodiversity and health in wild bee conservation, 2021, Trends in Ecology & Evolution
  • Pesticide use negatively affects bumble bees across European landscapes, 2023, Nature
  • Wild insect diversity increases inter-annual stability in global crop pollinator communities, 2021, Proceedings of the Royal Society B Biological Sciences
  • Exotic garden plants partly substitute for native plants as resources for pollinators when native plants become seasonally scarce, 2020, Oecologia

Frequent co-authors collaborating with Alexandra-Maria Klein include:

  • Felix Fornoff (28 publications)
  • Matthias Albrecht (22 publications)
  • Michael Staab (22 publications)
  • Simon G. Potts (19 publications)
  • Anina Knauer (16 publications)

Common publication venues for their research include:

  • Basic and Applied Ecology (8 publications)
  • Zenodo (CERN European Organization for Nuclear Research) (7 publications)
  • bioRxiv (Cold Spring Harbor Laboratory) (5 publications)
  • Nature Ecology & Evolution (4 publications)
  • Forest Ecology and Management (4 publications)

Alexandra-Maria Klein has contributed to book publications with titles such as "Defining Agroecology: A Festschrift for Teja Tscharntke" published by the European Organization for Nuclear Research in 2023, and "Sustainable use and conservation of invertebrate pollinators" published by FAO eBooks in 2023.

Best Publications

  • Importance of pollinators in changing landscapes for world crops

    Alexandra Maria Klein;Bernard E. Vaissière;James H. Cane;Ingolf Steffan-Dewenter

  • Landscape perspectives on agricultural intensification and biodiversity – ecosystem service management

    Teja Tscharntke;Alexandra-Maria Klein;Andreas Kruess;Ingolf Steffan-Dewenter

  • Wild Pollinators Enhance Fruit Set of Crops Regardless of Honey Bee Abundance

    Lucas A Garibaldi;Ingolf Steffan-Dewenter;Rachael Winfree;Marcelo A Aizen

  • Landscape moderation of biodiversity patterns and processes - eight hypotheses

    Teja Tscharntke;Jason M. Tylianakis;Tatyana A. Rand;Raphael K. Didham;Raphael K. Didham;Raphael K. Didham

  • Pollination and other ecosystem services produced by mobile organisms: a conceptual framework for the effects of land-use change.

    Claire Kremen;Neal M. Williams;Marcelo A. Aizen;Barbara Gemmill-Herren

  • Landscape effects on crop pollination services: are there general patterns?

    Taylor H. Ricketts;James Regetz;Ingolf Steffan-Dewenter;Saul A. Cunningham

  • A global quantitative synthesis of local and landscape effects on wild bee pollinators in agroecosystems

    Christina M. Kennedy;Eric Lonsdorf;Maile C. Neel;Neal M. Williams

  • Bottom-up effects of plant diversity on multitrophic interactions in a biodiversity experiment

    Christoph Scherber;Nico Eisenhauer;Nico Eisenhauer;Wolfgang W Weisser;Bernhard Schmid

  • Stability of pollination services decreases with isolation from natural areas despite honey bee visits

    Lucas A. Garibaldi;Lucas A. Garibaldi;Ingolf Steffan-Dewenter;Claire Kremen;Juan M. Morales

  • Delivery of crop pollination services is an insufficient argument for wild pollinator conservation

    David Kleijn;Rachael Winfree;Ignasi Bartomeus;Luísa G. Carvalheiro;Luísa G. Carvalheiro

  • Non-bee insects are important contributors to global crop pollination

    Romina Rader;Ignasi Bartomeus;Lucas A. Garibaldi;Michael P.D. Garratt

  • Fruit set of highland coffee increases with the diversity of pollinating bees.

    Alexandra-Maria Klein;Ingolf Steffan-Dewenter;Teja Tscharntke

  • A global synthesis reveals biodiversity-mediated benefits for crop production

    Matteo Dainese;Emily A. Martin;Marcelo A. Aizen;Matthias Albrecht

  • How much does agriculture depend on pollinators? Lessons from long-term trends in crop production

    Marcelo A. Aizen;Lucas Alejandro Garibaldi;Lucas Alejandro Garibaldi;Saul A. Cunningham;Alexandra M. Klein;Alexandra M. Klein

  • Impacts of species richness on productivity in a large-scale subtropical forest experiment.

    Yuanyuan Huang;Yuxin Chen;Nadia Castro-Izaguirre;Martin Baruffol;Martin Baruffol

  • Long-term global trends in crop yield and production reveal no current pollination shortage but increasing pollinator dependency.

    Marcelo A. Aizen;Lucas A. Garibaldi;Lucas A. Garibaldi;Saul A. Cunningham;Alexandra M. Klein;Alexandra M. Klein

  • Functional complementarity and specialisation: The role of biodiversity in plant–pollinator interactions

    Nico Blüthgen;Alexandra-Maria Klein;Alexandra-Maria Klein

  • Land-use intensification causes multitrophic homogenization of grassland communities

    Martin M. Gossner;Martin M. Gossner;Thomas M. Lewinsohn;Thomas M. Lewinsohn;Tiemo Kahl;Fabrice Grassein

  • Spillover of functionally important organisms between managed and natural habitats

    Eleanor J. Blitzer;Carsten F. Dormann;Andrea Holzschuh;Alexandra-Maria Klein

  • Landscape simplification filters species traits and drives biotic homogenization

    Sagrario Gámez-Virués;David J. Perović;Martin M. Gossner;Carmen Börschig

  • From research to action: Enhancing crop yield through wild pollinators

    Lucas A Garibaldi;Luísa G Carvalheiro;Luísa G Carvalheiro;Sara D Leonhardt;Marcelo A Aizen

Frequent Co-Authors

Teja Tscharntke
Teja Tscharntke University of Göttingen
Ingolf Steffan-Dewenter
Ingolf Steffan-Dewenter University of Würzburg
Wolfgang W. Weisser
Wolfgang W. Weisser Technical University of Munich
Anne Ebeling
Anne Ebeling Friedrich Schiller University Jena
Claire Kremen
Claire Kremen University of British Columbia
Markus Fischer
Markus Fischer University of Bern
François Buscot
François Buscot Helmholtz Centre for Environmental Research
Nico Blüthgen
Nico Blüthgen Technical University of Darmstadt
Helge Bruelheide
Helge Bruelheide Martin Luther University Halle-Wittenberg
Andreas Schuldt
Andreas Schuldt University of Göttingen

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