The University of Southampton
University of Southampton Institutional Repository
Warning ePrints Soton is experiencing an issue with some file downloads not being available. We are working hard to fix this. Please bear with us.

Non-native species outperform natives in coastal marine ecosystems subjected to warming and freshening events

Non-native species outperform natives in coastal marine ecosystems subjected to warming and freshening events
Non-native species outperform natives in coastal marine ecosystems subjected to warming and freshening events

Aims: contemporary climate change and biological invasions are two main drivers of biodiversity redistribution. Interactive effects between these drivers have been reported in a variety of studies, yet results are conflicting. Some studies find that contemporary climate change facilitates the spread and success of non-native species, especially those with broad physiological tolerances. Other studies conclude that non-natives are vulnerable to current and future changes in climatic conditions. Given that most studies have focused on terrestrial species, here we contribute to this debate by analysing responses of marine native and non-native fauna and flora to key climate-related stressors, namely increased temperature (warming) and decreased salinity (freshening). Location: Global. Time period: 2002–2019. Major taxa studied: Marine benthic macrophytes and invertebrates. 

Methods: we conducted a meta-analysis of experiments investigating the performance (e.g. growth, survival and reproduction) of benthic species in response to warming and freshening. 

Results: we found that non-native species tended to respond positively to elevated temperature, whereas the performance of native species declined. Similarly, decreased salinity negatively affected the biological processes of native species, but non-natives showed neutral or negative overall responses to freshening. 

Main conclusions: we find evidence that non-native species outperform natives under a wide variety of warming and freshening conditions. The growth and reproduction of non-natives are enhanced by warmer temperatures, and thus ocean warming is expected to facilitate future spread and success of non-native species. Increased freshening along future coastal areas, however, will likely have a negative impact in both native and non-native species and thus is expected to be a driver of significant change in coastal marine ecosystems. Our comprehensive analysis highlighted the need to expand our understanding of climate change effects beyond warming and specifically, studies focusing on salinity changes.

biofouling, coastal ecosystems, epibenthic, global change, invasive, marine biodiversity, quantitative synthesis
1466-822X
1698-1712
McKnight, Ella
97bab2b8-746d-4182-8489-48c7f10413d9
Spake, Rebecca
1cda8ad0-2ab2-45d9-a844-ec3d8be2786a
Bates, Amanda E
a96e267d-6d22-4232-b7ed-ce4e448a2a34
Smale, Daniel A
19528a3a-f66c-474d-ae13-c6405b8014ab
Rius, Marc
c4e88345-4b4e-4428-b4b2-37229155f68d
McKnight, Ella
97bab2b8-746d-4182-8489-48c7f10413d9
Spake, Rebecca
1cda8ad0-2ab2-45d9-a844-ec3d8be2786a
Bates, Amanda E
a96e267d-6d22-4232-b7ed-ce4e448a2a34
Smale, Daniel A
19528a3a-f66c-474d-ae13-c6405b8014ab
Rius, Marc
c4e88345-4b4e-4428-b4b2-37229155f68d

McKnight, Ella, Spake, Rebecca, Bates, Amanda E, Smale, Daniel A and Rius, Marc (2021) Non-native species outperform natives in coastal marine ecosystems subjected to warming and freshening events. Global Ecology and Biogeography, 30 (8), 1698-1712. (doi:10.1111/geb.13318).

Record type: Article

Abstract

Aims: contemporary climate change and biological invasions are two main drivers of biodiversity redistribution. Interactive effects between these drivers have been reported in a variety of studies, yet results are conflicting. Some studies find that contemporary climate change facilitates the spread and success of non-native species, especially those with broad physiological tolerances. Other studies conclude that non-natives are vulnerable to current and future changes in climatic conditions. Given that most studies have focused on terrestrial species, here we contribute to this debate by analysing responses of marine native and non-native fauna and flora to key climate-related stressors, namely increased temperature (warming) and decreased salinity (freshening). Location: Global. Time period: 2002–2019. Major taxa studied: Marine benthic macrophytes and invertebrates. 

Methods: we conducted a meta-analysis of experiments investigating the performance (e.g. growth, survival and reproduction) of benthic species in response to warming and freshening. 

Results: we found that non-native species tended to respond positively to elevated temperature, whereas the performance of native species declined. Similarly, decreased salinity negatively affected the biological processes of native species, but non-natives showed neutral or negative overall responses to freshening. 

Main conclusions: we find evidence that non-native species outperform natives under a wide variety of warming and freshening conditions. The growth and reproduction of non-natives are enhanced by warmer temperatures, and thus ocean warming is expected to facilitate future spread and success of non-native species. Increased freshening along future coastal areas, however, will likely have a negative impact in both native and non-native species and thus is expected to be a driver of significant change in coastal marine ecosystems. Our comprehensive analysis highlighted the need to expand our understanding of climate change effects beyond warming and specifically, studies focusing on salinity changes.

Text
geb.13318 - Version of Record
Available under License Creative Commons Attribution.
Download (685kB)

More information

Accepted/In Press date: 8 April 2021
Published date: 10 May 2021
Additional Information: Publisher Copyright: © 2021 The Authors. Global Ecology and Biogeography published by John Wiley & Sons Ltd Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Keywords: biofouling, coastal ecosystems, epibenthic, global change, invasive, marine biodiversity, quantitative synthesis

Identifiers

Local EPrints ID: 449957
URI: http://eprints.soton.ac.uk/id/eprint/449957
ISSN: 1466-822X
PURE UUID: b6229615-2638-4b66-a142-f57d906159e5

Catalogue record

Date deposited: 29 Jun 2021 17:01
Last modified: 26 Nov 2021 00:05

Export record

Altmetrics

Contributors

Author: Ella McKnight
Author: Rebecca Spake
Author: Amanda E Bates
Author: Daniel A Smale
Author: Marc Rius

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×