Time and heat for sexual reproduction: Comparing the phenology of Chara hispida of two populations at different latitudes
Geographical location affects the main ecological factors driving the timing of plants' life events. In addition, studying phenology is the simplest procedure to track current global warming and its effects on the success and survival of different populations of the same species. Little is know...
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ftunivgeneve:oai:unige.ch:aou:unige:87892 2023-10-01T03:55:23+02:00 Time and heat for sexual reproduction: Comparing the phenology of Chara hispida of two populations at different latitudes Calero, Sara Auderset Joye, Dominique Boissezon, Aurélie Rodrigo, Maria A. 2017 https://archive-ouverte.unige.ch/unige:87892 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aquabot.2016.09.011 https://archive-ouverte.unige.ch/unige:87892 unige:87892 info:eu-repo/semantics/openAccess ISSN: 0304-3770 Aquatic botany, vol. 136 (2017) p. 71-81 info:eu-repo/classification/ddc/333.7-333.9 info:eu-repo/classification/ddc/550 Charophytes Temperature Growing Degree Days Geographical factors Hopkins' Bioclimatic Law info:eu-repo/semantics/article Text Article scientifique info:eu-repo/semantics/acceptedVersion 2017 ftunivgeneve https://doi.org/10.1016/j.aquabot.2016.09.011 2023-09-07T07:33:40Z Geographical location affects the main ecological factors driving the timing of plants' life events. In addition, studying phenology is the simplest procedure to track current global warming and its effects on the success and survival of different populations of the same species. Little is known about the effect of water temperature and its corresponding accumulated heat on charophytes' phenology. We compared differences in water temperature and sexual reproductive phenology of Chara hispida in two ponds of two countries located at different latitudes (Spain and Switzerland) over the same year. We estimated the accumulated heat required to develop from one phenophase to another (unripe/ripe gametangia and oospores). Curve fitting techniques on water temperature showed an advance of 26 days in the Spanish spring 2 onset. All phenological events happened for the first time around 40 days earlier in the Spanish pond, agreeing with the Hopkins' Bioclimatic Law prediction. C. hispida sexually reproduced in a daily mean temperature (DMT) range of 10-25°C and needed 600 growing degree-days (GDD) to ripen gametangia in the Spanish pond. The Swiss population required a higher DMT (15°C) to begin to reproduce, and ~700 GDD to initiate gametangia ripening. Temperature (as well as radiation) is one of the most important drivers of reproductive phenology, and accumulated heat is a better predictor than DMT for charophyte phenology. In the foreseeable warming scenario, we assume that C. hispida sexual events would advance by more than one month in Switzerland and expand at the end of the season, considerably lengthening its reproductive period. Article in Journal/Newspaper Chara hispida Université de Genève: Archive ouverte UNIGE Ripen ENVELOPE(17.101,17.101,68.748,68.748) Two Ponds ENVELOPE(-57.915,-57.915,49.683,49.683) Aquatic Botany 136 71 81 |
institution |
Open Polar |
collection |
Université de Genève: Archive ouverte UNIGE |
op_collection_id |
ftunivgeneve |
language |
English |
topic |
info:eu-repo/classification/ddc/333.7-333.9 info:eu-repo/classification/ddc/550 Charophytes Temperature Growing Degree Days Geographical factors Hopkins' Bioclimatic Law |
spellingShingle |
info:eu-repo/classification/ddc/333.7-333.9 info:eu-repo/classification/ddc/550 Charophytes Temperature Growing Degree Days Geographical factors Hopkins' Bioclimatic Law Calero, Sara Auderset Joye, Dominique Boissezon, Aurélie Rodrigo, Maria A. Time and heat for sexual reproduction: Comparing the phenology of Chara hispida of two populations at different latitudes |
topic_facet |
info:eu-repo/classification/ddc/333.7-333.9 info:eu-repo/classification/ddc/550 Charophytes Temperature Growing Degree Days Geographical factors Hopkins' Bioclimatic Law |
description |
Geographical location affects the main ecological factors driving the timing of plants' life events. In addition, studying phenology is the simplest procedure to track current global warming and its effects on the success and survival of different populations of the same species. Little is known about the effect of water temperature and its corresponding accumulated heat on charophytes' phenology. We compared differences in water temperature and sexual reproductive phenology of Chara hispida in two ponds of two countries located at different latitudes (Spain and Switzerland) over the same year. We estimated the accumulated heat required to develop from one phenophase to another (unripe/ripe gametangia and oospores). Curve fitting techniques on water temperature showed an advance of 26 days in the Spanish spring 2 onset. All phenological events happened for the first time around 40 days earlier in the Spanish pond, agreeing with the Hopkins' Bioclimatic Law prediction. C. hispida sexually reproduced in a daily mean temperature (DMT) range of 10-25°C and needed 600 growing degree-days (GDD) to ripen gametangia in the Spanish pond. The Swiss population required a higher DMT (15°C) to begin to reproduce, and ~700 GDD to initiate gametangia ripening. Temperature (as well as radiation) is one of the most important drivers of reproductive phenology, and accumulated heat is a better predictor than DMT for charophyte phenology. In the foreseeable warming scenario, we assume that C. hispida sexual events would advance by more than one month in Switzerland and expand at the end of the season, considerably lengthening its reproductive period. |
format |
Article in Journal/Newspaper |
author |
Calero, Sara Auderset Joye, Dominique Boissezon, Aurélie Rodrigo, Maria A. |
author_facet |
Calero, Sara Auderset Joye, Dominique Boissezon, Aurélie Rodrigo, Maria A. |
author_sort |
Calero, Sara |
title |
Time and heat for sexual reproduction: Comparing the phenology of Chara hispida of two populations at different latitudes |
title_short |
Time and heat for sexual reproduction: Comparing the phenology of Chara hispida of two populations at different latitudes |
title_full |
Time and heat for sexual reproduction: Comparing the phenology of Chara hispida of two populations at different latitudes |
title_fullStr |
Time and heat for sexual reproduction: Comparing the phenology of Chara hispida of two populations at different latitudes |
title_full_unstemmed |
Time and heat for sexual reproduction: Comparing the phenology of Chara hispida of two populations at different latitudes |
title_sort |
time and heat for sexual reproduction: comparing the phenology of chara hispida of two populations at different latitudes |
publishDate |
2017 |
url |
https://archive-ouverte.unige.ch/unige:87892 |
long_lat |
ENVELOPE(17.101,17.101,68.748,68.748) ENVELOPE(-57.915,-57.915,49.683,49.683) |
geographic |
Ripen Two Ponds |
geographic_facet |
Ripen Two Ponds |
genre |
Chara hispida |
genre_facet |
Chara hispida |
op_source |
ISSN: 0304-3770 Aquatic botany, vol. 136 (2017) p. 71-81 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aquabot.2016.09.011 https://archive-ouverte.unige.ch/unige:87892 unige:87892 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.aquabot.2016.09.011 |
container_title |
Aquatic Botany |
container_volume |
136 |
container_start_page |
71 |
op_container_end_page |
81 |
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1778523807226527744 |