A Pacific oyster invasion transforms shellfish reef structure by changing the development of associated seaweeds

Andriana, Rosyta; Ouderaa, Isabelle van der; Eriksson, Britas Klemens

doi:10.1016/j.ecss.2019.106564

Cited by 5 publications

(3 citation statements)

References 36 publications

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“…Among physicochemical factors, ocean temperature is the most important driver of bivalve distributions and hence the most significant climate stressor of bivalve reefs (Zippay & Helmuth 2012). Poleward range shifts in some reef-building bivalve species have already been detected coincident with warming (Sorte et al 2010), leading to cascading ecological impacts (e.g., Andriana et al 2020). For example, in the Wadden Sea (Germany and Denmark), warming summers have accelerated Pacific oyster (Magallana gigas) invasion (Diederich et al 2005), while warming winters have driven recruitment failure and population declines in native bed-forming mussels (Mytilus edulis, Macoma balthica, and Cerastoderma edule) by synchronizing the timing of their settlement with seasonal biomass peaks in their main predators (Beukema & Dekker 2014).…”

Section: Bivalve Reefsmentioning

confidence: 99%

“…There are, however, also functional differences among these species (Kochmann et al 2008). For example, whereas oysters promote green algae of low biomass and habitat complexity, blue mussels promote high-biomass, high-complexity meadows of the habitat-forming brown seaweed (Fucus) (Andriana et al 2020). Unable to move to thermal refugia, reef-forming bivalves are also highly vulnerable to heatwaves (Harley 2008).…”

Section: Bivalve Reefsmentioning

confidence: 99%

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Impacts of Climate Change on Marine Foundation Species

Wernberg,

Thomsen,

Baum

et al. 2024

Annu. Rev. Mar. Sci.

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Marine foundation species are the biotic basis for many of the world's coastal ecosystems, providing structural habitat, food, and protection for myriad plants and animals as well as many ecosystem services. However, climate change poses a significant threat to foundation species and the ecosystems they support. We review the impacts of climate change on common marine foundation species, including corals, kelps, corals, seagrasses, salt marsh plants, mangroves, and bivalves. It is evident that marine foundation species have already been severely impacted by several climate change drivers, often through interactive effects with other human stressors, such as pollution, overfishing, and coastal development. Despite considerable variation in geographical, environmental, and ecological contexts, direct and indirect effects of gradual warming and subsequent heatwaves have emerged as the most pervasive drivers of observed impact and potent threat across all marine foundation species, but effects from sea level rise, ocean acidification, and increased storminess are expected to increase. Documented impacts include changes in the genetic structures, physiology, abundance, and distribution of the foundation species themselves and changes to their interactions with other species, with flow-on effects to associated communities, biodiversity, and ecosystem functioning. We discuss strategies to support marine foundation species into the Anthropocene, in order to increase their resilience and ensure the persistence of the ecosystem services they provide. Expected final online publication date for the Annual Review of Marine Science, Volume 16 is January 2024. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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Section: Bivalve Reefsmentioning

confidence: 99%

Section: Bivalve Reefsmentioning

confidence: 99%

Impacts of Climate Change on Marine Foundation Species

Wernberg,

Thomsen,

Baum

et al. 2024

Annu. Rev. Mar. Sci.

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“…The intertidal flats in this area are characterised by vast stretches of bare sediment that are occasionally broken up by blue mussel reefs that can cover several hectares. In the past decade, the Pacific oyster (Crassostera gigas [Thunberg]) has increased strongly on the blue mussel reefs (Andriana et al 2019). Today, the older parts of the reefs consist of a mixed matrix of oysters and blue mussels, while the younger parts are still completely dominated by blue mussels.…”

Section: Field Experimentsmentioning

confidence: 99%

Intertidal mussel reefs change the composition and size distribution of diatoms in the biofilm

et al. 2021

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Migrating diatoms are microscopic ecosystem engineering organisms that have functional consequences on the seascape scale by significantly contributing to the microphytobenthos biofilm. The microphytobenthos biofilm is a thin photosynthesising layer that covers the sediment on intertidal flats. It fuels the food web, increases sediment stability, and enhances the deposition of particles, providing ecosystem services to coastal communities. Here we tested the effect of another ecosystem engineering habitat, intertidal blue mussel reefs, on the composition and properties of migrating diatom communities. Small-scale reefs constructed in the intertidal mimicked and reinforced the natural pattern in diatom community composition and function that we documented in the field. The field experiment adding small reefs to the intertidal ran from 30 April to 10 June 2015 and the field samples were collected around a natural blue mussel bed on the same tidal flat on 7 October 2015 (N 53.489°, E 6.230°). Both the constructed small-scale reefs and the natural reef changed the community composition of diatoms in the biofilm by promoting higher numbers of smaller-sized cells and species. Small diatoms have higher growth and gross photosynthesis rates, indicating that this explains the higher production and chlorophyll-a concentration of the biofilm measured on natural intertidal shellfish reefs. Our results showed that shellfish reefs have a large impact on biofilm functioning. However, biofilms are also fuel for the shellfish, indicating that the two very different ecosystem engineers may facilitate coexistence on tidal flats through a positive feedback loop.

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