Summer and Winter Marine Heatwaves Favor an Invasive Over Native Seaweeds

Research output: Contribution to journalArticle

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Summer and Winter Marine Heatwaves Favor an Invasive Over Native Seaweeds. / Atkinson, James; King, Nathan G.; Wilmes, Sophie B.; Moore, Pippa J.

In: European Journal of Phycology, Vol. 56, No. 6, 12.2020, p. 1591-1600.

Research output: Contribution to journalArticle

HarvardHarvard

Atkinson, J, King, NG, Wilmes, SB & Moore, PJ 2020, 'Summer and Winter Marine Heatwaves Favor an Invasive Over Native Seaweeds', European Journal of Phycology, vol. 56, no. 6, pp. 1591-1600. https://doi.org/10.1111/jpy.13051

APA

Atkinson, J., King, N. G., Wilmes, S. B., & Moore, P. J. (2020). Summer and Winter Marine Heatwaves Favor an Invasive Over Native Seaweeds. European Journal of Phycology, 56(6), 1591-1600. https://doi.org/10.1111/jpy.13051

CBE

Atkinson J, King NG, Wilmes SB, Moore PJ. 2020. Summer and Winter Marine Heatwaves Favor an Invasive Over Native Seaweeds. European Journal of Phycology. 56(6):1591-1600. https://doi.org/10.1111/jpy.13051

MLA

Atkinson, James et al. "Summer and Winter Marine Heatwaves Favor an Invasive Over Native Seaweeds". European Journal of Phycology. 2020, 56(6). 1591-1600. https://doi.org/10.1111/jpy.13051

VancouverVancouver

Atkinson J, King NG, Wilmes SB, Moore PJ. Summer and Winter Marine Heatwaves Favor an Invasive Over Native Seaweeds. European Journal of Phycology. 2020 Dec;56(6):1591-1600. https://doi.org/10.1111/jpy.13051

Author

Atkinson, James ; King, Nathan G. ; Wilmes, Sophie B. ; Moore, Pippa J. / Summer and Winter Marine Heatwaves Favor an Invasive Over Native Seaweeds. In: European Journal of Phycology. 2020 ; Vol. 56, No. 6. pp. 1591-1600.

RIS

TY - JOUR

T1 - Summer and Winter Marine Heatwaves Favor an Invasive Over Native Seaweeds

AU - Atkinson, James

AU - King, Nathan G.

AU - Wilmes, Sophie B.

AU - Moore, Pippa J.

PY - 2020/12

Y1 - 2020/12

N2 - Marine heatwaves (MHWs) are emerging as forceful agents of ecosystem change and are increasing in frequency, duration, and intensity with climate change. During MHWs, physiological thresholds of native species may be exceeded while the performance of invasive species with warm affinities may be enhanced. As a consequence, MHWs could significantly alter an ecosystem's invasive dynamics, but such interactions are poorly understood. Following a 10-d acclimation period, we investigated the physiological resistance and resilience of an intertidal rock pool assemblage invaded by the seaweed Sargassum muticum to realistic 14-d marine heatwave scenarios (+1.5°C, +2.0°C, +3.5°C) followed by a 14-d recovery period. We conducted mesocosm experiments in both summer and winter to investigate temporal variability of MHWs. MHW treatments had clear negative impacts on native seaweeds (Fucus serratus and Chondrus crispus) while enhancing the performance of S. muticum. This pattern was consistent across season indicating that acclimation to cooler ambient temperatures results in winter MHWs having significant impacts on native species. As climate warming advances, this may ultimately lead to changes in competitive interactions and potentially exclusion of native species, while invasive species may proliferate and become more conspicuous within temperate rocky shore environments.

AB - Marine heatwaves (MHWs) are emerging as forceful agents of ecosystem change and are increasing in frequency, duration, and intensity with climate change. During MHWs, physiological thresholds of native species may be exceeded while the performance of invasive species with warm affinities may be enhanced. As a consequence, MHWs could significantly alter an ecosystem's invasive dynamics, but such interactions are poorly understood. Following a 10-d acclimation period, we investigated the physiological resistance and resilience of an intertidal rock pool assemblage invaded by the seaweed Sargassum muticum to realistic 14-d marine heatwave scenarios (+1.5°C, +2.0°C, +3.5°C) followed by a 14-d recovery period. We conducted mesocosm experiments in both summer and winter to investigate temporal variability of MHWs. MHW treatments had clear negative impacts on native seaweeds (Fucus serratus and Chondrus crispus) while enhancing the performance of S. muticum. This pattern was consistent across season indicating that acclimation to cooler ambient temperatures results in winter MHWs having significant impacts on native species. As climate warming advances, this may ultimately lead to changes in competitive interactions and potentially exclusion of native species, while invasive species may proliferate and become more conspicuous within temperate rocky shore environments.

KW - climate change

KW - ecophysiology

KW - global change ecology

KW - photophysiology

KW - Sargassum muticum

KW - thermal thresholds

KW - winter warm spells

U2 - 10.1111/jpy.13051

DO - 10.1111/jpy.13051

M3 - Article

VL - 56

SP - 1591

EP - 1600

JO - European Journal of Phycology

JF - European Journal of Phycology

SN - 0967-0262

IS - 6

ER -