What Works in Conservation: 2021 - cover image



William J. Sutherland; Lynn V. Dicks; Silviu O. Petrovan; Rebecca K. Smith

Published On





  • English

Print Length

1038 pages (lxxiv+964)


Paperback156 x 52 x 234 mm(6.14" x 2.04" x 9.21")
Hardback156 x 54 x 234 mm(6.14" x 2.13" x 9.21")


Paperback3144g (110.90oz)
Hardback3569g (125.89oz)

OCLC Number





  • RNKC
  • RNKH
  • RND


  • NAT010000
  • NAT011000
  • SCI026000
  • NAT000000
  • SCI000000


  • QH75


  • Conservation
  • environment
  • practical intervention
  • amphibians
  • bats
  • birds
  • farmland
  • soil fertility
  • forests
  • invasive species

What Works in Conservation


Does the creation of artificial reefs benefit subtidal benthic invertebrates?

Is the use of organic farming instead of conventional farming beneficial to bat conservation?
Does installing wildlife warning reflectors along roads benefit mammal conservation?
Does the installation of exclusion and/or escape devices on fishing nets benefit marine and freshwater mammal conservation?

What Works in Conservation has been created to provide practitioners with answers to these and many other questions about practical conservation.

This book provides an assessment of the effectiveness of 2526 conservation interventions based on summarized scientific evidence. The 2021 edition containssubstantial new material on bat conservation, terrestrial mammal conservation and marine and freshwater mammals, thus completing the evidence for all mammal species categories. Other chapters cover practical global conservation of primates, amphibians, bats, birds, forests, peatlands, subtidal benthic invertebrates, shrublands and heathlands, as well as the conservation of European farmland biodiversity and some aspects of enhancing natural pest control, enhancing soil fertility, management of captive animals and control of freshwater invasive species. It contains key results from the summarized evidence for each conservation intervention and an assessment of the effectiveness of each by international expert panels. The accompanying website www.conservationevidence.com describes each of the studies individually, and provides full references.
This is the fourth author-approved edition of What Works in Conservation, which is revised on an annual basis.


[...] this work is an excellent general resource for decision-makers, policy makers, and other stakeholders involved in conservation efforts. It could also be used in whole or selectively to inform discussion in an undergraduate course. The book's value extends beyond the printed pages: extensive supplementary resources are available online, including a searchable database of reviews and more than 7,000 annotated bibliographies. The editors strongly advise users to consult these supplemental resources for detailed accounts of evidence, based on relevancy to the context/species of concern. Notably, the book is also available for free download from the publisher.

S. McCarragher

CHOICE connect, vol. 60, no. 3, 2022.


  • William J. Sutherland
  • Helen Meredith
  • Rebecca K. Smith

2. Bat Conservation

(pp. 65–140)
  • John D. Altringham
  • Olivia C. Richardson
  • Anna Berthinussen

3. Bird Conservation

(pp. 141–286)
  • David R. Williams
  • Matthew F. Child
  • Lynn V. Dicks
  • Nancy Ockendon
  • Robert G. Pople
  • David A. Showler
  • Jessica C. Walsh
  • Erasmus K. H. J. zu Ermgassen
  • William J. Sutherland
  • Lynn V. Dicks
  • Joscelyne E. Ashpole
  • Juliana Dänhardt
  • Katy James
  • Annelie Jönsson
  • Nicola Randall
  • David A. Showler
  • Rebecca K. Smith
  • Susan Turpie
  • David R. Williams
  • William J. Sutherland

5. Forest Conservation

(pp. 327–370)
  • Gidi Ne’eman
  • Simon Schowanek
  • Yohay Carmel
  • Har’el Agra
  • Rebecca K. Smith
  • Nigel G. Taylor
  • Patrick Grillas
  • William J. Sutherland
  • Lisa Orth
  • Jessica Junker
  • Hjalmar S. Kühl
  • Rebecca K. Smith
  • Silviu O. Petrovan
  • William J. Sutherland
  • Ricardo Rocha
  • Philip A. Martin
  • Rebecca K. Smith
  • William J. Sutherland
  • Coral S. Jonas
  • Lydia T. Timbrell
  • Fey Young
  • Silviu O. Petrovan
  • Andrew E. Bowkett
  • Rebecca K. Smith
  • David Aldridge
  • Nancy Ockendon
  • Ricardo Rocha
  • Rebecca K. Smith
  • William J. Sutherland
  • Hugh L. Wright
  • Joscelyne E. Ashpole
  • Lynn V. Dicks
  • James Hutchison
  • Caitlin G. McCormack
  • William J. Sutherland
  • Georgina Key
  • Mike Whitfield
  • Lynn V. Dicks
  • William J. Sutherland
  • Richard D. Bardgett
  • Anaelle J. Lemasson
  • Laura R. Pettit
  • Rebecca K. Smith
  • William J. Sutherland
  • Anna Berthinussen
  • Rebecca K. Smith
  • William J. Sutherland
  • Nick Littlewood
  • Ricardo Rocha
  • Rebecca K. Smith
  • Philip Martin
  • Sarah Lockhart
  • Rebecca F. Schoonover
  • Elspeth Wilman
  • Andrew J. Bladon
  • Katie A. Sainsbury
  • Stuart Pimm
  • William J. Sutherland


(pp. 1–8)
  • William J. Sutherland
  • Lynn V. Dicks
  • Silviu O. Petrovan
  • Rebecca K. Smith


William J. Sutherland

Miriam Rothschild Chair in Conservation Biology in the Department of Zoology at University of Cambridge

Lynn V. Dicks

Research Fellow funded by the Natural Environment Research Council at University of Cambridge

Silviu O. Petrovan

Research Associate in the Department of Zoology at University of Cambridge

Rebecca K. Smith

Research Associate in the Department of Zoology at University of Cambridge