10.5061/DRYAD.G79CNP5PS
Pintanel, Pol
0000-0002-4256-7377
Estación Biológica de Doñana
Pintanel, Pol
Estación Biológica de Doñana
Tejedo, Miguel
Estación Biológica de Doñana
Salinas-Ivanenko, Sofia
University of Barcelona
Jervis, Phillip
Imperial College London
Merino-Viteri, Andrés
0000-0003-1039-2645
Pontificia Universidad Católica del Ecuador
Predators like it hot: Thermal mismatch in a predator-prey system across
an elevational tropical gradient
Dryad
dataset
2021
biotic interactions
CTmax
PTMmax
warming tolerance
FOS: Biological sciences
Spanish Agency for International Development Cooperation
https://ror.org/00r6akf90
AP/038788/11
Ministerio de Asuntos Económicos y Transformación Digital
https://ror.org/03sv46s19
CGL2012-40246-C02-01
Ministerio de Asuntos Económicos y Transformación Digital
https://ror.org/03sv46s19
CGL2017-86924-P
Severo Ochoa funds *
SEV-69
Dirección General Académica at PUCE*
M13414
Spanish Agency for International Development Cooperation
https://ror.org/00r6akf90
BOE-A-2015-12270
Severo Ochoa funds
SEV-69
Dirección General Académica at PUCE
M13414
2021-05-06T00:00:00Z
2021-05-06T00:00:00Z
en
https://doi.org/10.5281/zenodo.4726280
33355 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Climate change may have dramatic consequences for communities through both
direct effects of peak temperatures upon individual species and through
interspecific mismatches in thermal sensitivities of interacting organisms
which mediate changes in interspecific interactions (i.e. predation).
Despite this, there is a paucity of information upon the patterns of
spatial physiological sensitivity of interacting species (at both
landscape and local scales) which could ultimately influence geographical
variation in the effects of climate change upon community processes. In
order to assess where these impacts may occur, we first need to evaluate
the spatial heterogeneity in the degree of mismatch in thermal tolerances
between interacting organisms. We experimentally quantify the magnitude of
interspecific mismatch in maximum (CTmax) and minimum (CTmin) thermal
tolerances among a predator-prey system of dragonfly and anuran larvae in
tropical montane (242-3631 m) and habitat (ponds and streams) gradients.
To compare thermal mismatches between predators and preys, we coined the
parameters maximum and minimum predatory tolerance margins (PTMmax and
PTMmin), or difference in CTmax and CTmin of interacting organisms sampled
across elevational and habitat gradients. Our analyses revealed that: (1)
predators exhibit higher heat tolerances than prey (~ 4 ºC), a trend which
remained stable across habitats and elevations. In contrast, we found no
differences in minimum thermal tolerances between these groups. (2)
Maximum and minimum thermal tolerances of both predators and prey
decreased with elevation, but only maximum thermal tolerance varied across
habitats, with pond species exhibiting higher heat tolerance than stream
species. (3) Pond-dwelling organisms from low elevations (0-1500 m a.s.l.)
may be more susceptible to direct effects of warming than their highland
counterparts because their maximum thermal tolerances are only slightly
higher than their exposed maximum environmental temperatures. The greater
relative thermal tolerance of dragonfly naiad predators may further
increase the vulnerability of lowland tadpoles to warming due to
potentially enhanced indirect effects of higher predation rates by more
heat-tolerant dragonfly predators. However, further experimental work is
required to establish the individual and population-level consequences of
this thermal tolerance mismatch upon biotic interactions such as
predator-prey.