Thermal Niche for Seed Germination and Species Distribution Modelling of Swietenia macrophylla King (Mahogany) under Climate Change Scenarios
Por:
Sampayo-Maldonado, Salvador, Ordoñez-Salanueva C.A., Mattana, Efisio, Way, Michael, Castillo-Lorenzo, Elena, Davila-Aranda, Patricia D., Lira-Saade, Rafael, Tellez-Valdes, Oswaldo, Rodriguez-Arevalo, I, Norma, Ulian, Tiziana, Flores-Ortiz, Cesar M.
Publicada:
1 nov 2021
Resumen:
Swietenia macrophylla is an economically important tree species
propagated by seeds that lose their viability in a short time, making
seed germination a key stage for the species recruitment. The objective
of this study was to determine the cardinal temperatures and thermal
time for seed germination of S. macrophylla; and its potential
distribution under different climate change scenarios. Seeds were placed
in germination chambers at constant temperatures from 5 to 45 & DEG;C
and their thermal responses modelled using a thermal time approach. In
addition, the potential biogeographic distribution was projected
according to the Community Climate System Model version 4 (CCSM4).
Germination rate reached its maximum at 37.3 & PLUSMN; 1.3 & DEG;C
(To); seed germination decreased to near zero at 52.7 & PLUSMN; 2.2 &
DEG;C (ceiling temperature, Tc) and at 12.8 & PLUSMN; 2.4 & DEG;C
(base temperature, Tb). The suboptimal thermal time theta 150 needed for
50% germination was ca. 190 & DEG;Cd, which in the current scenario is
accumulated in 20 days. The CCSM4 model estimates an increase of the
potential distribution of the species of 12.3 to 18.3% compared to the
current scenario. The temperature had an important effect on the
physiological processes of the seeds. With the increase in temperature,
the thermal needs for germination are completed in less time, so the
species will not be affected in its distribution. Although the
distribution of the species may not be affected, it is crucial to
generate sustainable management strategies to ensure its long-term
conservation.
Filiaciones:
Sampayo-Maldonado, Salvador:
Plant Physiology Laboratory, Biotechnology and Prototypes Unit (UBIPRO), FES Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, Estado de Mexico, 54090, Mexico
Ordoñez-Salanueva C.A.:
Plant Physiology Laboratory, Biotechnology and Prototypes Unit (UBIPRO), FES Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, Estado de Mexico, 54090, Mexico
Mattana, Efisio:
Royal Botanic Gardens, Kew, Wakehurst, Ardingly, Haywards Heath, West Sussex, RH17 6TN, United Kingdom
Way, Michael:
Royal Botanic Gardens, Kew, Wakehurst, Ardingly, Haywards Heath, West Sussex, RH17 6TN, United Kingdom
Castillo-Lorenzo, Elena:
Royal Botanic Gardens, Kew, Wakehurst, Ardingly, Haywards Heath, West Sussex, RH17 6TN, United Kingdom
Davila-Aranda, Patricia D.:
Natural Resources Laboratory, Biotechnology and Prototypes Unit (UBIPRO), FES Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, Estado de Mexico, 54090, Mexico
Lira-Saade, Rafael:
Natural Resources Laboratory, Biotechnology and Prototypes Unit (UBIPRO), FES Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, Estado de Mexico, 54090, Mexico
Tellez-Valdes, Oswaldo:
Natural Resources Laboratory, Biotechnology and Prototypes Unit (UBIPRO), FES Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, Estado de Mexico, 54090, Mexico
Rodriguez-Arevalo, I, Norma:
Seed Bank, FES Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, Estado de Mexico, 54090, Mexico
Ulian, Tiziana:
Royal Botanic Gardens, Kew, Wakehurst, Ardingly, Haywards Heath, West Sussex, RH17 6TN, United Kingdom
Flores-Ortiz, Cesar M.:
Plant Physiology Laboratory, Biotechnology and Prototypes Unit (UBIPRO), FES Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, Estado de Mexico, 54090, Mexico
National Laboratory in Health, FES Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, Estado de Mexico, 54090, Mexico
gold, All Open Access; Gold
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