World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
44
Citations
6316
World Ranking
5145
National Ranking
555

Overview

John G. Ewen is affiliated with the Zoological Society of London in the United Kingdom. Their research primarily spans the fields of Environmental Science and Biochemistry, Genetics and Molecular Biology. Subfields of particular focus include Ecology, Genetics, Ecological Modeling, Nature and Landscape Conservation, and Ecology, Evolution, Behavior and Systematics.

Their work covers several main topics, notably:

  • Wildlife Ecology and Conservation
  • Species Distribution and Climate Change
  • Avian ecology and behavior
  • Genetic diversity and population structure
  • Ecology and Vegetation Dynamics Studies
  • Genetic and phenotypic traits in livestock
  • Animal Behavior and Reproduction

John G. Ewen has published extensively in various academic venues. The most frequent publications appear in:

  • Animal Conservation
  • Molecular Ecology
  • Conservation Biology
  • Science
  • Molecular Ecology Resources

Recent significant papers include:

  • Genetic variance in fitness indicates rapid contemporary adaptive evolution in wild animals, 2022, Science
  • Conservation in the maelstrom of Covid-19 - a call to action to solve the challenges, exploit opportunities and prepare for the next pandemic, 2020, Animal Conservation
  • Extinct in the wild: The precarious state of Earth's most threatened group of species, 2023, Science
  • Genomic data of different resolutions reveal consistent inbreeding estimates but contrasting homozygosity landscapes for the threatened Aotearoa New Zealand hihi, 2021, Molecular Ecology
  • Extinct-in-the-wild species' last stand, 2020, Science

Frequently collaborating co-authors include:

  • Patricia Brekke
  • Anna W. Santure
  • Axel Moehrenschlager
  • Stefano Canessa
  • Kevin A. Parker

Best Publications

  • Diversity, loss, and gain of malaria parasites in a globally invasive bird

    Alfonso Marzal;Alfonso Marzal;Robert E Ricklefs;Gediminas Valkiūnas;Tamer Albayrak

  • Genetic variance in fitness indicates rapid contemporary adaptive evolution in wild animals

    Unknown

  • Reintroduction biology : integrating science and management

    John G. Ewen

  • Standards for documenting and monitoring bird reintroduction projects

    William J. Sutherland;Doug Armstrong;Stuart H. M Butchart;Joanne M. Earnhardt

  • Is Reintroduction Biology an Effective Applied Science

    Gemma Taylor;Gemma Taylor;Stefano Canessa;Rohan H. Clarke;Dean Ingwersen

  • Facultative primary sex ratio variation: a lack of evidence in birds?

    John G. Ewen;Phillip Cassey;Anders P. Møller

  • Reintroducing resurrected species: selecting DeExtinction candidates

    Philip J. Seddon;Axel Moehrenschlager;John G. Ewen

  • Population dynamics of reintroduced forest birds on New Zealand islands

    Doug P. Armstrong;R. Scott Davidson;Wendy J. Dimond;John K. Perrott

  • Strategic monitoring of reintroductions in ecological restoration programmes

    John G. Ewen;Doug P. Armstrong

  • Dynamics and Viability of a New Zealand Robin Population Reintroduced to Regenerating Fragmented Habitat

    Doug P. Armstrong;John G. Ewen

  • Establishment of exotic parasites: the origins and characteristics of an avian malaria community in an isolated island avifauna

    John G Ewen;Staffan Bensch;Tim M Blackburn;Tim M Blackburn;Camille Bonneaud;Camille Bonneaud

  • Improving supplementary feeding in species conservation.

    John G. Ewen;Leila Walker;Leila Walker;Stefano Canessa;Jim J. Groombridge

  • Sensitive males: inbreeding depression in an endangered bird

    Patricia Brekke;Peter M. Bennett;Jinliang Wang;Nathalie Pettorelli

  • Global phylogeography of the avian malaria pathogen Plasmodium relictum based on MSP1 allelic diversity

    Olof Hellgren;Carter T. Atkinson;Staffan Bensch;Tamer Albayrak

  • High genetic diversity in the remnant island population of hihi and the genetic consequences of re‐introduction

    Patricia Brekke;Patricia Brekke;Peter M. Bennett;Anna W. Santure;John G. Ewen

  • Little Adaptive Potential in a Threatened Passerine Bird

    Pierre de Villemereuil;Alexis Rutschmann;Kate D. Lee;John G. Ewen

  • Reintroduction objectives, decisions and outcomes: global perspectives from the herpetofauna

    John G Ewen;Pritpal S Soorae;Pritpal S Soorae;Stefano Canessa

  • Maximizing the success of assisted colonizations

    A. L. M. Chauvenet;A. L. M. Chauvenet;J. G. Ewen;D. P. Armstrong;T. M. Blackburn;T. M. Blackburn

  • Haemoproteus minutus is highly virulent for Australasian and South American parrots.

    Luis Ortiz-Catedral;Dianne Brunton;Mark F. Stidworthy;Hany M. Elsheikha

  • Male provisioning is negatively correlated with attempted extrapair copulation frequency in the stitchbird (or hihi).

    John G. Ewen;Doug P. Armstrong

  • Eggshell colour does not predict measures of maternal investment in eggs of Turdus thrushes.

    Phillip Cassey;John G. Ewen;Tim M. Blackburn;Mark E. Hauber

  • Floater males gain reproductive success through extrapair fertilizations in the stitchbird.

    John G. Ewen;D.P. Armstrong;David M. Lambert

Frequent Co-Authors

Doug P. Armstrong
Doug P. Armstrong Massey University
Phillip Cassey
Phillip Cassey University of Adelaide
Tim M. Blackburn
Tim M. Blackburn University College London
Carl G. Jones
Carl G. Jones Durrell Wildlife Conservation Trust
Anders Pape Møller
Anders Pape Møller University of Paris-Saclay
Nathalie Pettorelli
Nathalie Pettorelli Zoological Society of London
Mark E. Hauber
Mark E. Hauber Queens College, CUNY
Rebecca M. Kilner
Rebecca M. Kilner University of Cambridge
Jim J. Groombridge
Jim J. Groombridge University of Kent
Philip J. Seddon
Philip J. Seddon University of Otago

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Pursuing a degree in Ecology and Evolution can open doors to diverse study options and career paths. Many students combine this knowledge with skills from other disciplines to expand their professional potential. Flexible online education options now allow you to tailor your academic journey to your interests and your schedule.

For students interested in environmental design or sustainable habitats, online architecture degree programs may provide valuable interdisciplinary insight. Those seeking strong analytical skills to supplement biological study may consider enrolling in an online degree mathematics program. If you have a creative flair, combining ecological knowledge with a graphic design online degree can lead to careers in science communication or educational media.

Additionally, students looking for a customizable and cost-effective path may opt for cheap online interdisciplinary studies degree options. These programs can incorporate coursework from Ecology, Mathematics, Architecture, and Design, allowing for a truly personalized education that meets both career goals and budget needs.

Best Scientists Citing John G. Ewen

Trending Scientists

Recently Published Articles