TY  - JOUR
JF  - New Phytologist
PB  - WILEY
SP  - 1312
ID  - discovery10141081
AV  - public
UR  - https://doi.org/10.1111/nph.16453
A1  - Walter, GM
A1  - Catara, S
A1  - Bridle, JR
A1  - Cristaudo, A
KW  - climate change
KW  -  ecological resilience
KW  -  environmental sensitivity
KW  -  genotype-by-environment interactions
KW  -  germination success
KW  -  intraspecific variation
KW  -  Mediterranean ecosystems
KW  -  seed ecology
N1  - Copyright © 2020 The Authors. New Phytologist © 2020 New Phytologist Trust. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Y1  - 2020/06//
IS  - 5
TI  - Population variation in early development can determine ecological resilience in response to environmental change
EP  - 1324
VL  - 226
N2  - As climate change transforms seasonal patterns of temperature and precipitation, germination success at marginal temperatures will become critical for the long-term persistence of many plant species and communities. If populations vary in their environmental sensitivity to marginal temperatures across a species? geographical range, populations that respond better to future environmental extremes are likely to be critical for maintaining ecological resilience of the species. /
Using seeds from two to six populations for each of nine species of Mediterranean plants, we characterized patterns of among-population variation in environmental sensitivity by quantifying genotype-by-environment interactions (G × E) for germination success at temperature extremes, and under two light regimes representing conditions below and above the soil surface. /
For eight of nine species tested at hot and cold marginal temperatures, we observed substantial among-population variation in environmental sensitivity for germination success, and this often depended on the light treatment. Importantly, different populations often performed best at different environmental extremes. /
Our results demonstrate that ongoing changes in temperature regime will affect the phenology, fitness, and demography of different populations within the same species differently. We show that quantifying patterns of G × E for multiple populations, and understanding how such patterns arise, can test mechanisms that promote ecological resilience.
ER  -