Compound climate extremes driving recent sub-continental tree mortality in northern Australia have no precedent in recent centuries

Abstract Compound climate extremes (CCEs) can have significant and persistent environmental impacts on ecosystems. However, knowledge of the occurrence of CCEs beyond the past ~ 50 years, and hence their ecological impacts, is limited. Here, we place the widespread 2015–16 mangrove dieback and the m...

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Autores principales:	Kathryn J. Allen, Danielle C. Verdon-Kidd, James Z. Sippo, Patrick J. Baker
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/545fe408c8c84b5ea0a0b793979363d5
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spelling	oai:doaj.org-article:545fe408c8c84b5ea0a0b793979363d52021-12-02T18:02:31ZCompound climate extremes driving recent sub-continental tree mortality in northern Australia have no precedent in recent centuries10.1038/s41598-021-97762-x2045-2322https://doaj.org/article/545fe408c8c84b5ea0a0b793979363d52021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97762-xhttps://doaj.org/toc/2045-2322Abstract Compound climate extremes (CCEs) can have significant and persistent environmental impacts on ecosystems. However, knowledge of the occurrence of CCEs beyond the past ~ 50 years, and hence their ecological impacts, is limited. Here, we place the widespread 2015–16 mangrove dieback and the more recent 2020 inland native forest dieback events in northern Australia into a longer historical context using locally relevant palaeoclimate records. Over recent centuries, multiple occurrences of analogous antecedent and coincident climate conditions associated with the mangrove dieback event were identified in this compilation. However, rising sea level—a key antecedent condition—over the three decades prior to the mangrove dieback is unprecedented in the past 220 years. Similarly, dieback in inland forests and savannas was associated with a multi-decadal wetting trend followed by the longest and most intense drought conditions of the past 250 years, coupled with rising temperatures. While many ecological communities may have experienced CCEs in past centuries, the addition of new environmental stressors associated with varying aspects of global change may exceed their thresholds of resilience. Palaeoclimate compilations provide the much-needed longer term context to better assess frequency and changes in some types of CCEs and their environmental impacts.Kathryn J. AllenDanielle C. Verdon-KiddJames Z. SippoPatrick J. BakerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kathryn J. Allen Danielle C. Verdon-Kidd James Z. Sippo Patrick J. Baker Compound climate extremes driving recent sub-continental tree mortality in northern Australia have no precedent in recent centuries
description	Abstract Compound climate extremes (CCEs) can have significant and persistent environmental impacts on ecosystems. However, knowledge of the occurrence of CCEs beyond the past ~ 50 years, and hence their ecological impacts, is limited. Here, we place the widespread 2015–16 mangrove dieback and the more recent 2020 inland native forest dieback events in northern Australia into a longer historical context using locally relevant palaeoclimate records. Over recent centuries, multiple occurrences of analogous antecedent and coincident climate conditions associated with the mangrove dieback event were identified in this compilation. However, rising sea level—a key antecedent condition—over the three decades prior to the mangrove dieback is unprecedented in the past 220 years. Similarly, dieback in inland forests and savannas was associated with a multi-decadal wetting trend followed by the longest and most intense drought conditions of the past 250 years, coupled with rising temperatures. While many ecological communities may have experienced CCEs in past centuries, the addition of new environmental stressors associated with varying aspects of global change may exceed their thresholds of resilience. Palaeoclimate compilations provide the much-needed longer term context to better assess frequency and changes in some types of CCEs and their environmental impacts.
format	article
author	Kathryn J. Allen Danielle C. Verdon-Kidd James Z. Sippo Patrick J. Baker
author_facet	Kathryn J. Allen Danielle C. Verdon-Kidd James Z. Sippo Patrick J. Baker
author_sort	Kathryn J. Allen
title	Compound climate extremes driving recent sub-continental tree mortality in northern Australia have no precedent in recent centuries
title_short	Compound climate extremes driving recent sub-continental tree mortality in northern Australia have no precedent in recent centuries
title_full	Compound climate extremes driving recent sub-continental tree mortality in northern Australia have no precedent in recent centuries
title_fullStr	Compound climate extremes driving recent sub-continental tree mortality in northern Australia have no precedent in recent centuries
title_full_unstemmed	Compound climate extremes driving recent sub-continental tree mortality in northern Australia have no precedent in recent centuries
title_sort	compound climate extremes driving recent sub-continental tree mortality in northern australia have no precedent in recent centuries
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/545fe408c8c84b5ea0a0b793979363d5
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Compound climate extremes driving recent sub-continental tree mortality in northern Australia have no precedent in recent centuries

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