Effectiveness of different strategies to mitigate the impacts of projected changes in temperature on sea turtle reproductive output

Sea turtles reproduction is influenced by environmental temperature. Projected changes in global temperatures will likely alter their reproductive output (e.g. hatchling sex ratio, hatching success). Concern over the potential impacts from increases in temperature on sea turtle reproductive output h...

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Κύριος συγγραφέας:	Jourdan, Julie - Jourdan
Άλλοι συγγραφείς:	Fuentes, Mariana
Γλώσσα:	English
Δημοσίευση:	2015
Θέματα:	Sand temperature Climate change Temperature-dependent sex determination In situ conservation strategies Effectiveness Sea turtles
Διαθέσιμο Online:	https://vsmart.lib.aegean.gr/webopac/List.csp?SearchT1=Jourdan%2C+Julie&Index1=Keywordsbib&Database=1&SearchMethod=Find_1&SearchTerm1=Jourdan%2C+Julie&OpacLanguage=gre&Profile=Default&EncodedRequest=5BJ949BF420zF687U0ABCA8250Df&EncodedQuery=5BJ949BF420zF687U0ABCA8250Df&Source=SysQR&PageType=Start&PreviousList=RecordListFind&WebPageNr=1&NumberToRetrieve=50&WebAction=NewSearch&StartValue=0&RowRepeat=0&ExtraInfo=&SortIndex=Year&SortDirection=-1&Resource=&SavingIndicator=&RestrType=&RestrTerms=&RestrShowAll=&LinkToIndex= http://hdl.handle.net/11610/11695
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author	Jourdan, Julie - Jourdan
author2	Fuentes, Mariana
author_facet	Fuentes, Mariana Jourdan, Julie - Jourdan
author_sort	Jourdan, Julie - Jourdan
collection	DSpace
description	Sea turtles reproduction is influenced by environmental temperature. Projected changes in global temperatures will likely alter their reproductive output (e.g. hatchling sex ratio, hatching success). Concern over the potential impacts from increases in temperature on sea turtle reproductive output has prompted identification of a range of management strategies to mitigate these impacts (e.g. in situ manipulation of incubation temperature using shade, sprinklers). However, little is known about how effective these strategies are at mitigating the impacts of increased temperature. To provide insights into this, we tested the effectiveness of two commonly proposed strategies (sprinkling and shading) to reduce sand temperature and potentially counteract projected impacts of increases on temperature on the northern Great Barrier Reef (nGBR) green turtle population. For this, we compared sand temperature at turtle nest depth (50 cm) under a control environment in the open (100% sunshine) with 5 different treatments: (1) sprinkling during the day (OD) and (2) at night (ON) at an open area, (3) shade, (4) sprinkling during the day (SD) and (5) at night (SN) at a shaded area. Not all strategies reduced the sand temperatures. OD and shading on rainy days increased sand temperature by 0.83 ± 1.20°C and 0.96 ± 0.41°C respectively, when compared to the control. Sand temperature was reduced the most under ON (2.23 ± 0.06°C cooler), and SN (1.43 ± 0.94°C cooler). If the strategies that reduced sand temperature were implemented they would substantially counteract the projected impacts on the nGBR green turtle population. Although potentially effective, it is suggested that they should be implemented when impacts from climate change become direr and more information on the ecological risks associated with the strategies are available
id	oai:hellanicus.lib.aegean.gr:11610-11695
institution	Hellanicus
language	English
publishDate	2015
record_format	dspace
spelling	oai:hellanicus.lib.aegean.gr:11610-116952021-01-22T14:01:54Z Effectiveness of different strategies to mitigate the impacts of projected changes in temperature on sea turtle reproductive output Jourdan, Julie - Jourdan Fuentes, Mariana Sand temperature Climate change Temperature-dependent sex determination In situ conservation strategies Effectiveness Sea turtles Sea turtles reproduction is influenced by environmental temperature. Projected changes in global temperatures will likely alter their reproductive output (e.g. hatchling sex ratio, hatching success). Concern over the potential impacts from increases in temperature on sea turtle reproductive output has prompted identification of a range of management strategies to mitigate these impacts (e.g. in situ manipulation of incubation temperature using shade, sprinklers). However, little is known about how effective these strategies are at mitigating the impacts of increased temperature. To provide insights into this, we tested the effectiveness of two commonly proposed strategies (sprinkling and shading) to reduce sand temperature and potentially counteract projected impacts of increases on temperature on the northern Great Barrier Reef (nGBR) green turtle population. For this, we compared sand temperature at turtle nest depth (50 cm) under a control environment in the open (100% sunshine) with 5 different treatments: (1) sprinkling during the day (OD) and (2) at night (ON) at an open area, (3) shade, (4) sprinkling during the day (SD) and (5) at night (SN) at a shaded area. Not all strategies reduced the sand temperatures. OD and shading on rainy days increased sand temperature by 0.83 ± 1.20°C and 0.96 ± 0.41°C respectively, when compared to the control. Sand temperature was reduced the most under ON (2.23 ± 0.06°C cooler), and SN (1.43 ± 0.94°C cooler). If the strategies that reduced sand temperature were implemented they would substantially counteract the projected impacts on the nGBR green turtle population. Although potentially effective, it is suggested that they should be implemented when impacts from climate change become direr and more information on the ecological risks associated with the strategies are available 2015-11-18T09:46:07Z 2015-11-18T09:46:07Z 2012 https://vsmart.lib.aegean.gr/webopac/List.csp?SearchT1=Jourdan%2C+Julie&Index1=Keywordsbib&Database=1&SearchMethod=Find_1&SearchTerm1=Jourdan%2C+Julie&OpacLanguage=gre&Profile=Default&EncodedRequest=5BJ949BF420zF687U0ABCA8250Df&EncodedQuery=5BJ949BF420zF687U0ABCA8250Df&Source=SysQR&PageType=Start&PreviousList=RecordListFind&WebPageNr=1&NumberToRetrieve=50&WebAction=NewSearch&StartValue=0&RowRepeat=0&ExtraInfo=&SortIndex=Year&SortDirection=-1&Resource=&SavingIndicator=&RestrType=&RestrTerms=&RestrShowAll=&LinkToIndex= http://hdl.handle.net/11610/11695 en Μυτιλήνη
spellingShingle	Sand temperature Climate change Temperature-dependent sex determination In situ conservation strategies Effectiveness Sea turtles Jourdan, Julie - Jourdan Effectiveness of different strategies to mitigate the impacts of projected changes in temperature on sea turtle reproductive output
title	Effectiveness of different strategies to mitigate the impacts of projected changes in temperature on sea turtle reproductive output
title_full	Effectiveness of different strategies to mitigate the impacts of projected changes in temperature on sea turtle reproductive output
title_fullStr	Effectiveness of different strategies to mitigate the impacts of projected changes in temperature on sea turtle reproductive output
title_full_unstemmed	Effectiveness of different strategies to mitigate the impacts of projected changes in temperature on sea turtle reproductive output
title_short	Effectiveness of different strategies to mitigate the impacts of projected changes in temperature on sea turtle reproductive output
title_sort	effectiveness of different strategies to mitigate the impacts of projected changes in temperature on sea turtle reproductive output
topic	Sand temperature Climate change Temperature-dependent sex determination In situ conservation strategies Effectiveness Sea turtles
url	https://vsmart.lib.aegean.gr/webopac/List.csp?SearchT1=Jourdan%2C+Julie&Index1=Keywordsbib&Database=1&SearchMethod=Find_1&SearchTerm1=Jourdan%2C+Julie&OpacLanguage=gre&Profile=Default&EncodedRequest=5BJ949BF420zF687U0ABCA8250Df&EncodedQuery=5BJ949BF420zF687U0ABCA8250Df&Source=SysQR&PageType=Start&PreviousList=RecordListFind&WebPageNr=1&NumberToRetrieve=50&WebAction=NewSearch&StartValue=0&RowRepeat=0&ExtraInfo=&SortIndex=Year&SortDirection=-1&Resource=&SavingIndicator=&RestrType=&RestrTerms=&RestrShowAll=&LinkToIndex= http://hdl.handle.net/11610/11695
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Effectiveness of different strategies to mitigate the impacts of projected changes in temperature on sea turtle reproductive output

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