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Multidecadal changes in coastal benthic species composition and ecosystem functioning occur independently of temperature‐driven community shifts.

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Title: Multidecadal changes in coastal benthic species composition and ecosystem functioning occur independently of temperature‐driven community shifts.
Authors: Armitage, Phoebe1,2 (AUTHOR) phoebe.armitage@abo.fi, Burrows, Michael T.3 (AUTHOR), Rimmer, James E. V.1 (AUTHOR), Blight, Andrew J.1 (AUTHOR), Paterson, David M.1 (AUTHOR)
Source: Global Change Biology. Aug2024, Vol. 30 Issue 8, p1-19. 19p.
Subjects: Global warming, Bioindicators, Ecological disturbances, Coastal changes, Ecosystem dynamics
Abstract: Rising global temperatures are often identified as the key driver impacting ecosystems and the services they provide by affecting biodiversity structure and function. A disproportionate amount of our understanding of biodiversity and function is from short‐term experimental studies and static values of biodiversity indices, lacking the ability to monitor long‐term trends and capture community dynamics. Here, we analyse a biennial dataset spanning 32 years of macroinvertebrate benthic communities and their functional response to increasing temperatures. We monitored changes in species' thermal affinities to examine warming‐related shifts by selecting their mid‐point global temperature distribution range and linking them to species' traits. We employed a novel weighted metric using Biological Trait Analysis (BTA) to gain better insights into the ecological potential of each species by incorporating species abundance and body size and selecting a subset of traits that represent five ecosystem functions: bioturbation activity, sediment stability, nutrient recycling and higher and lower trophic production. Using biodiversity indices (richness, Simpson's diversity and vulnerability) and functional indices (richness, Rao's Q and redundancy), the community structure showed no significant change over time with a narrow range of variation. However, we show shifts in species composition with warming and increases in the abundance of individuals, which altered ecosystem functioning positively and/or non‐linearly. Yet, when higher taxonomic groupings than species were excluded from the analysis, there was only a weak increase in the measured change in community‐weighted average thermal affinities, suggesting changes in ecosystem functions over time occur independently of temperature increase‐related shifts in community composition. Other environmental factors driving species composition and abundance may be more important in these subtidal macrobenthic communities. This challenges the prevailing emphasis on temperature as the primary driver of ecological response to climate change and emphasises the necessity for a comprehensive understanding of the temporal dynamics of complex systems. [ABSTRACT FROM AUTHOR]
Copyright of Global Change Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 179321120
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  Data: Multidecadal changes in coastal benthic species composition and ecosystem functioning occur independently of temperature‐driven community shifts.
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  Data: <searchLink fieldCode="AR" term="%22Armitage%2C+Phoebe%22">Armitage, Phoebe</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> phoebe.armitage@abo.fi</i><br /><searchLink fieldCode="AR" term="%22Burrows%2C+Michael+T%2E%22">Burrows, Michael T.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rimmer%2C+James+E%2E+V%2E%22">Rimmer, James E. V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Blight%2C+Andrew+J%2E%22">Blight, Andrew J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Paterson%2C+David+M%2E%22">Paterson, David M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Global+Change+Biology%22">Global Change Biology</searchLink>. Aug2024, Vol. 30 Issue 8, p1-19. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Global+warming%22">Global warming</searchLink><br /><searchLink fieldCode="DE" term="%22Bioindicators%22">Bioindicators</searchLink><br /><searchLink fieldCode="DE" term="%22Ecological+disturbances%22">Ecological disturbances</searchLink><br /><searchLink fieldCode="DE" term="%22Coastal+changes%22">Coastal changes</searchLink><br /><searchLink fieldCode="DE" term="%22Ecosystem+dynamics%22">Ecosystem dynamics</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Rising global temperatures are often identified as the key driver impacting ecosystems and the services they provide by affecting biodiversity structure and function. A disproportionate amount of our understanding of biodiversity and function is from short‐term experimental studies and static values of biodiversity indices, lacking the ability to monitor long‐term trends and capture community dynamics. Here, we analyse a biennial dataset spanning 32 years of macroinvertebrate benthic communities and their functional response to increasing temperatures. We monitored changes in species' thermal affinities to examine warming‐related shifts by selecting their mid‐point global temperature distribution range and linking them to species' traits. We employed a novel weighted metric using Biological Trait Analysis (BTA) to gain better insights into the ecological potential of each species by incorporating species abundance and body size and selecting a subset of traits that represent five ecosystem functions: bioturbation activity, sediment stability, nutrient recycling and higher and lower trophic production. Using biodiversity indices (richness, Simpson's diversity and vulnerability) and functional indices (richness, Rao's Q and redundancy), the community structure showed no significant change over time with a narrow range of variation. However, we show shifts in species composition with warming and increases in the abundance of individuals, which altered ecosystem functioning positively and/or non‐linearly. Yet, when higher taxonomic groupings than species were excluded from the analysis, there was only a weak increase in the measured change in community‐weighted average thermal affinities, suggesting changes in ecosystem functions over time occur independently of temperature increase‐related shifts in community composition. Other environmental factors driving species composition and abundance may be more important in these subtidal macrobenthic communities. This challenges the prevailing emphasis on temperature as the primary driver of ecological response to climate change and emphasises the necessity for a comprehensive understanding of the temporal dynamics of complex systems. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Global Change Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/gcb.17482
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        Text: English
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      – SubjectFull: Ecological disturbances
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      – SubjectFull: Coastal changes
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      – SubjectFull: Ecosystem dynamics
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      – TitleFull: Multidecadal changes in coastal benthic species composition and ecosystem functioning occur independently of temperature‐driven community shifts.
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              Text: Aug2024
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