Please use this identifier to cite or link to this item:
Title: Upper temperature limits of tropical marine ectotherms: Global warming implications
Authors: Nguyen, K.D.T.
Morley, S.A.
Lai, C.-H. 
Clark, M.S.
Tan, K.S. 
Bates, A.E.
Peck, L.S.
Issue Date: 29-Dec-2011
Citation: Nguyen, K.D.T., Morley, S.A., Lai, C.-H., Clark, M.S., Tan, K.S., Bates, A.E., Peck, L.S. (2011-12-29). Upper temperature limits of tropical marine ectotherms: Global warming implications. PLoS ONE 6 (12) : -. ScholarBank@NUS Repository.
Abstract: Animal physiology, ecology and evolution are affected by temperature and it is expected that community structure will be strongly influenced by global warming. This is particularly relevant in the tropics, where organisms are already living close to their upper temperature limits and hence are highly vulnerable to rising temperature. Here we present data on upper temperature limits of 34 tropical marine ectotherm species from seven phyla living in intertidal and subtidal habitats. Short term thermal tolerances and vertical distributions were correlated, i.e., upper shore animals have higher thermal tolerance than lower shore and subtidal animals; however, animals, despite their respective tidal height, were susceptible to the same temperature in the long term. When temperatures were raised by 1°C hour -1, the upper lethal temperature range of intertidal ectotherms was 41-52°C, but this range was narrower and reduced to 37-41°C in subtidal animals. The rate of temperature change, however, affected intertidal and subtidal animals differently. In chronic heating experiments when temperature was raised weekly or monthly instead of every hour, upper temperature limits of subtidal species decreased from 40°C to 35.4°C, while the decrease was more than 10°C in high shore organisms. Hence in the long term, activity and survival of tropical marine organisms could be compromised just 2-3°C above present seawater temperatures. Differences between animals from environments that experience different levels of temperature variability suggest that the physiological mechanisms underlying thermal sensitivity may vary at different rates of warming. © 2011 Nguyen et al.
Source Title: PLoS ONE
ISSN: 19326203
DOI: 10.1371/journal.pone.0029340
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1371_journal_pone_0029340.pdf205.96 kBAdobe PDF




checked on Jun 24, 2022


checked on Jun 17, 2022

Page view(s)

checked on Jun 23, 2022


checked on Jun 23, 2022

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.