News Release

Logged tropical rainforests still support biodiversity even when the heat is on

Peer-Reviewed Publication

University of Sheffield

Wallace's Flying Frog

image: Wallace's flying frog. view more 

Credit: University of Sheffield: Rebecca Senior

  • New study shows logged rainforests shouldn't be written off as they have long-term conservation value

  • Logged areas found to have the same temperature as pristine forests

  • Study shows animals like the Bornean horned frog, Bornean keeled pit viper and Wallace's flying frog should be equally capable of hiding out when it gets too hot

Tropical rainforests continue to buffer wildlife from extreme temperatures even after logging, a new study has revealed.

Scientists had previously assumed that cutting down trees caused major changes to local climates within tropical forests - something which would have a devastating effect on the animals living there.

However, new research conducted by the Universities of Sheffield, York and Universiti Malaysia Sabah, shows logged forests on the island of Borneo were thermally indistinguishable from the nearby pristine forest.

This is good news for the huge diversity of globally important species that live in logged forests, which may have previously been further destroyed or converted into agricultural land.

The international team of scientists examined the impact that commercial selective logging had on local temperature 9 - 12 years after the trees had been chopped down. This type of logging removes a large amount of timber and can be extremely disruptive to rainforest habitat - this is particularly evident in Southeast Asia.

Rebecca Senior, a NERC ACCE PhD student from the University of Sheffield's Department of Animal and Plant Sciences, led the ground breaking study which is published today (Friday 20 October 2017) in the journal Global Change Biology.

"This study highlights the resilience and conservation value of logged tropical rainforests. At a first glance it may be tempting to condemn these forests as disturbed beyond repair and convert them to agriculture.

"But to do this would be sacrificing a biological haven, capable of supporting diverse species both in the present day and under the increasing threat from climate change.

"Logging activity affects 20 per cent of the world's tropical rainforests and in many places only logged rainforest remains, so it is extremely positive news that even after trees have been logged the forest can continue to support many species of conservation."

Rebecca added: "For long-term survival in logged forests it is vitally important that tropical species are able to respond to other threats - particularly climate change.

"Many tropical species are picky about the temperatures they prefer but have limited options for coping with temperature change. When exposed to extreme heat, a common strategy for animals like frogs and insects is to move to a cool refuge - like people in a warm room moving towards an open window."

During the study the researchers travelled to Borneo to establish whether intensive logging activity had altered the availability of cool refuges for animals like the Bornean horned frog, Bornean keeled pit viper, and Wallace's flying frog.

"We recorded temperature using a thermal camera and tiny temperature loggers," said Rebecca.

"After 9 - 12 years of recovery post-logging, the logged forest had a very different structure with fewer large trees and more young saplings.

"Surprisingly, though, we discovered the average temperature and the availability of cool refuges was comparable with a pristine forest that had never been logged.

"What this means is that regardless of whether the forest was logged or not, the animals that live there should be equally capable of hiding out when it gets too hot.

"This will be increasingly necessary as average global temperatures rise, so it's important that we recognise the value of degraded forests and the speed with which they can recover, given the chance."

Jane Hill, Rebecca's supervisor at the University of York, added: " Rebecca's study is important for helping us conserve tropical species in human-affected landscapes. Demonstrating the high value of degraded forest is good news for those species that may be vulnerable to climate change. "


The Department of Animal and Plant Sciences at the University of Sheffield is one of the world's leading centres for animal biology. To study, here visit

Additional information

The lead author, Rebecca Senior, is a PhD student in the Department of Animal and Plant Sciences, University of Sheffield. This work forms part of her PhD, funded by the NERC ACCE Doctoral Training Partnership that includes the Universities of Sheffield, York and Liverpool and the Centre for Ecology & Hydrology.

Co-author Dr David Edwards (main supervisor) is also based the Department of Animal and Plant Sciences, University of Sheffield. Prof Jane Hill (co-supervisor) is based at the Department of Biology, University of York.

Co-author Suzan Benedick was the in-country collaborator for the research. She is based at Universiti Malaysia Sabah, Malaysia.

Publication details: Title: Tropical forests are thermally buffered despite intensive selective logging.

Journal: Global Change Biology


Publication date: 20th October 2017

Funding: Rebecca is funded by a NERC studentship through the ACCE (Adapting to the Challenges of a Changing Environment) Doctoral Training Partnership (Grant No. NE/L002450/1).

For further information please contact: Amy Huxtable, Media Relations Officer, University of Sheffield, 0114 222 9859,

The University of Sheffield

With almost 27,000 of the brightest students from over 140 countries, learning alongside over 1,200 of the best academics from across the globe, the University of Sheffield is one of the world's leading universities.

A member of the UK's prestigious Russell Group of leading research-led institutions, Sheffield offers world-class teaching and research excellence across a wide range of disciplines.

Unified by the power of discovery and understanding, staff and students at the university are committed to finding new ways to transform the world we live in.

Sheffield is the only university to feature in The Sunday Times 100 Best Not-For-Profit Organisations to Work For 2017 and was voted number one university in the UK for Student Satisfaction by Times Higher Education in 2014. In the last decade it has won four Queen's Anniversary Prizes in recognition of the outstanding contribution to the United Kingdom's intellectual, economic, cultural and social life.

Sheffield has six Nobel Prize winners among former staff and students and its alumni go on to hold positions of great responsibility and influence all over the world, making significant contributions in their chosen fields.

Global research partners and clients include Boeing, Rolls-Royce, Unilever, AstraZeneca, Glaxo SmithKline, Siemens and Airbus, as well as many UK and overseas government agencies and charitable foundations.

For further information, please visit

To read other news releases about the University of Sheffield, visit

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.