How did the characteristics of the growing season change during the past 100 years at a steep river basin in Japan?

The effects of climate change on plant phenological events such as flowering, leaf flush, and leaf fall may be greater in steep river basins than at the horizontal scale of countries and continents. This possibility is due to the effect of temperature on plant phenology and the difference between ve...

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Autores principales:	Nagai Shin, Taku M Saitoh, Kenlo Nishida Nasahara
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5ce33debad1f4b8fa2da4f1faedc6eb7
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spelling	oai:doaj.org-article:5ce33debad1f4b8fa2da4f1faedc6eb72021-12-02T20:08:47ZHow did the characteristics of the growing season change during the past 100 years at a steep river basin in Japan?1932-620310.1371/journal.pone.0255078https://doaj.org/article/5ce33debad1f4b8fa2da4f1faedc6eb72021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0255078https://doaj.org/toc/1932-6203The effects of climate change on plant phenological events such as flowering, leaf flush, and leaf fall may be greater in steep river basins than at the horizontal scale of countries and continents. This possibility is due to the effect of temperature on plant phenology and the difference between vertical and horizontal gradients in temperature sensitivities. We calculated the dates of the start (SGS) and end of the growing season (EGS) in a steep river basin located in a mountainous region of central Japan over a century timescale by using a degree-day phenological model based on long-term, continuous, in situ observations. We assessed the generality and representativeness of the modelled SGS and EGS dates by using phenological events, live camera images taken at multiple points in the basin, and satellite observations made at a fine spatial resolution. The sensitivity of the modelled SGS and EGS dates to elevation changed from 3.29 days (100 m)-1 (-5.48 days °C-1) and -2.89 days (100 m)-1 (4.81 days °C-1), respectively, in 1900 to 2.85 days (100 m)-1 (-4.75 days °C-1) and -2.84 day (100 m)-1 (4.73 day °C-1) in 2019. The long-term trend of the sensitivity of the modelled SGS date to elevation was -0.0037 day year-1 per 100 m, but the analogous trend in the case of the modelled EGS date was not significant. Despite the need for further studies to improve the generality and representativeness of the model, the development of degree-day phenology models in multiple, steep river basins will deepen our ecological understanding of the sensitivity of plant phenology to climate change.Nagai ShinTaku M SaitohKenlo Nishida NasaharaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0255078 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nagai Shin Taku M Saitoh Kenlo Nishida Nasahara How did the characteristics of the growing season change during the past 100 years at a steep river basin in Japan?
description	The effects of climate change on plant phenological events such as flowering, leaf flush, and leaf fall may be greater in steep river basins than at the horizontal scale of countries and continents. This possibility is due to the effect of temperature on plant phenology and the difference between vertical and horizontal gradients in temperature sensitivities. We calculated the dates of the start (SGS) and end of the growing season (EGS) in a steep river basin located in a mountainous region of central Japan over a century timescale by using a degree-day phenological model based on long-term, continuous, in situ observations. We assessed the generality and representativeness of the modelled SGS and EGS dates by using phenological events, live camera images taken at multiple points in the basin, and satellite observations made at a fine spatial resolution. The sensitivity of the modelled SGS and EGS dates to elevation changed from 3.29 days (100 m)-1 (-5.48 days °C-1) and -2.89 days (100 m)-1 (4.81 days °C-1), respectively, in 1900 to 2.85 days (100 m)-1 (-4.75 days °C-1) and -2.84 day (100 m)-1 (4.73 day °C-1) in 2019. The long-term trend of the sensitivity of the modelled SGS date to elevation was -0.0037 day year-1 per 100 m, but the analogous trend in the case of the modelled EGS date was not significant. Despite the need for further studies to improve the generality and representativeness of the model, the development of degree-day phenology models in multiple, steep river basins will deepen our ecological understanding of the sensitivity of plant phenology to climate change.
format	article
author	Nagai Shin Taku M Saitoh Kenlo Nishida Nasahara
author_facet	Nagai Shin Taku M Saitoh Kenlo Nishida Nasahara
author_sort	Nagai Shin
title	How did the characteristics of the growing season change during the past 100 years at a steep river basin in Japan?
title_short	How did the characteristics of the growing season change during the past 100 years at a steep river basin in Japan?
title_full	How did the characteristics of the growing season change during the past 100 years at a steep river basin in Japan?
title_fullStr	How did the characteristics of the growing season change during the past 100 years at a steep river basin in Japan?
title_full_unstemmed	How did the characteristics of the growing season change during the past 100 years at a steep river basin in Japan?
title_sort	how did the characteristics of the growing season change during the past 100 years at a steep river basin in japan?
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/5ce33debad1f4b8fa2da4f1faedc6eb7
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How did the characteristics of the growing season change during the past 100 years at a steep river basin in Japan?

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