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Temperate insects with narrow seasonal activity periods can be as vulnerable to climate change as tropical insect species

Johansson, Frank ; Orizaola, Germán and Nilsson-Örtman, Viktor LU (2020) In Scientific Reports 10(1).
Abstract

The magnitude and ecological impact of climate change varies with latitude. Several recent models have shown that tropical ectotherms face the greatest risk from warming because they currently experience temperatures much closer to their physiological optimum than temperate taxa. Even a small increase in temperature may thus result in steep fitness declines in tropical species but increased fitness in temperate species. This prediction, however, is based on a model that does not account for latitudinal differences in activity periods. Temperate species in particular may often experience considerably higher temperatures than expected during the active season. Here, we integrate data on insect warming tolerance and temperature-dependent... (More)

The magnitude and ecological impact of climate change varies with latitude. Several recent models have shown that tropical ectotherms face the greatest risk from warming because they currently experience temperatures much closer to their physiological optimum than temperate taxa. Even a small increase in temperature may thus result in steep fitness declines in tropical species but increased fitness in temperate species. This prediction, however, is based on a model that does not account for latitudinal differences in activity periods. Temperate species in particular may often experience considerably higher temperatures than expected during the active season. Here, we integrate data on insect warming tolerance and temperature-dependent development to re-evaluate latitudinal trends in thermal safety margins after accounting for latitudinal trends in insect seasonal activity. Our analyses suggest that temperate and tropical species differ far less in thermal safety margins than commonly assumed, and add to the recent number of studies suggesting that tropical and temperate species might face similar levels of threat from climate change.

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author
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type
Contribution to journal
publication status
published
subject
in
Scientific Reports
volume
10
issue
1
article number
8822
publisher
Nature Publishing Group
external identifiers
  • pmid:32483233
  • scopus:85085874600
ISSN
2045-2322
DOI
10.1038/s41598-020-65608-7
language
English
LU publication?
yes
id
bb6a7961-f37a-46e7-a405-8d744974a099
date added to LUP
2020-06-26 09:40:43
date last changed
2021-04-06 05:01:15
@article{bb6a7961-f37a-46e7-a405-8d744974a099,
  abstract     = {<p>The magnitude and ecological impact of climate change varies with latitude. Several recent models have shown that tropical ectotherms face the greatest risk from warming because they currently experience temperatures much closer to their physiological optimum than temperate taxa. Even a small increase in temperature may thus result in steep fitness declines in tropical species but increased fitness in temperate species. This prediction, however, is based on a model that does not account for latitudinal differences in activity periods. Temperate species in particular may often experience considerably higher temperatures than expected during the active season. Here, we integrate data on insect warming tolerance and temperature-dependent development to re-evaluate latitudinal trends in thermal safety margins after accounting for latitudinal trends in insect seasonal activity. Our analyses suggest that temperate and tropical species differ far less in thermal safety margins than commonly assumed, and add to the recent number of studies suggesting that tropical and temperate species might face similar levels of threat from climate change.</p>},
  author       = {Johansson, Frank and Orizaola, Germán and Nilsson-Örtman, Viktor},
  issn         = {2045-2322},
  language     = {eng},
  number       = {1},
  publisher    = {Nature Publishing Group},
  series       = {Scientific Reports},
  title        = {Temperate insects with narrow seasonal activity periods can be as vulnerable to climate change as tropical insect species},
  url          = {http://dx.doi.org/10.1038/s41598-020-65608-7},
  doi          = {10.1038/s41598-020-65608-7},
  volume       = {10},
  year         = {2020},
}