Ben P. Harvey

University of Tsukuba

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Sylvain Agostini

University of the Ryukyus

Jason M. Hall‐Spencer

University of Plymouth

Shigeki Wada

University of Tsukuba

Koetsu Kon

Tokyo University of Marine Science and Technology

Marco Milazzo

University of Palermo

Pippa J. Moore

Newcastle University

Kazuo Inaba

University of Tsukuba

Christopher E. Cornwall

Victoria University of Wellington

Joshua M. Heitzman

University of Tsukuba

Riccardo Rodolfo‐Metalpa

Institut de Recherche pour le Développement

Cooperative Institutions

University of Plymouth

University of Tsukuba

University of Tasmania

Laboratoire d’Océanographie de Villefranche

University of Exeter

Korea University of Science and Technology

Red Sea University

University of Western Australia

Centre National de la Recherche Scientifique

University of the Ryukyus

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High abundances of zooxanthellate zoantharians (Palythoa and Zoanthus) at multiple natural analogues: potential model anthozoans?

Coral Reefs (2023)

James Davis Reimer Sylvain Agostini Yimnang Golbuu Ben P. Harvey Michael Izumiyama

Dominance (genetics)

Scleractinia

Ocean Acidification

10.1007/s00338-023-02381-9

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Managing Urban Landscapes for Biodiversity Conservation and Human Health

Dave Kendal Emily J. Flies Pauline Marsh Philip Jones Caragh G. Threlfall

Key Findings A diverse range of actors are involved in created policy and management of green spaces (researchers, practitioners and community groups) in the greater Hobart region Leadership usually occurs at local council level The presence of infrastructure in green spaces can encourage use by people, but reduce biodiversity conservation for wildlife The greatest barriers for green space management and engagement were due to lack of resources (especially in smaller councils), language barriers and ‘biophobia’ (fear of nature) Enablers for improving green space management include public education and community engagement Better connections are needed between different councils in the greater Hobart region, and between practitioners and researchers

Green infrastructure

Community Engagement

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Whole community and functional gene changes of biofilms on marine plastic debris in response to ocean acidification

Microbial Ecology (2022)

Dorsaf Kerfahi Ben P. Harvey Hyoki Kim Ying Yang Jonathan M. Adams

Ocean Acidification

Ecophysiology

10.1007/s00248-022-01987-w

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Citations (7)

Increasing importance of crustose coralline algae to coral reef carbonate production under ongoing climate change

Research Square (Research Square) (2022)

Christopher E. Cornwall Jérémy Carlot Oscar Branson Travis A. Courtney Ben P. Harvey

Abstract Understanding the drivers of net coral reef calcium carbonate production is increasingly important as ocean warming, acidification, and other anthropogenic stressors threaten the maintenance of coral reef structures and the services these ecosystems provide. Despite intense research effort on coral reef calcium carbonate production, the inclusion of a key reef forming/accreting calcifying group, the crustose coralline algae (CCA), remains challenging both from a theoretical and practical standpoint. While corals are typically the primary reef builders of today, ongoing declines in coral cover due to a range of environmental perturbations will likely increase the relative importance of CCA and other non-scleractinian calcifying taxa to coral reef carbonate production. Here, we demonstrate that CCA are important carbonate producers that, under certain conditions, can match or even exceed the contribution of corals to coral reef carbonate production. Despite their importance, CCA are often inaccurately recorded in benthic surveys or even entirely missing from coral reef carbonate budgets. We outline several recommendations to improve the inclusion of CCA into such carbonate budgets under the ongoing climate crisis.

Crustose

Coralline algae

Ocean Acidification

Coral bleaching

10.21203/rs.3.rs-2327274/v1

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Seawater carbonate chemistry and community composition and production of of algal communities

Ben P. Harvey Koetsu Kon Sylvain Agostini Shigeki Wada Jason M. Hall‐Spencer

10.1594/pangaea.930056

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Ocean acidification increases phytobenthic carbon fixation and export in a warm-temperate system

Estuarine Coastal and Shelf Science (2020)

Shigeki Wada Sylvain Agostini Ben P. Harvey Yuko Omori Jason M. Hall‐Spencer

Holdfast

Ocean Acidification

Carbon fixation

Total inorganic carbon

10.1016/j.ecss.2020.107113

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Citations (7)

Determining the impacts of ocean acidification and global warming on biotic interactions in shallow-water marine environments

Ben P. Harvey

Ocean Acidification

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Ocean acidification drives community shifts towards simplified non-calcified habitats in a subtropical−temperate transition zone

Scientific Reports (2018)

Sylvain Agostini Ben P. Harvey Shigeki Wada Koetsu Kon Marco Milazzo

Abstract Rising atmospheric concentrations of carbon dioxide are causing surface seawater pH and carbonate ion concentrations to fall in a process known as ocean acidification. To assess the likely ecological effects of ocean acidification we compared intertidal and subtidal marine communities at increasing levels of p CO 2 at recently discovered volcanic seeps off the Pacific coast of Japan (34° N). This study region is of particular interest for ocean acidification research as it has naturally low levels of surface seawater p CO 2 (280–320 µatm) and is located at a transition zone between temperate and sub-tropical communities. We provide the first assessment of ocean acidification effects at a biogeographic boundary. Marine communities exposed to mean levels of p CO 2 predicted by 2050 experienced periods of low aragonite saturation and high dissolved inorganic carbon. These two factors combined to cause marked community shifts and a major decline in biodiversity, including the loss of key habitat-forming species, with even more extreme community changes expected by 2100. Our results provide empirical evidence that near-future levels of p CO 2 shift sub-tropical ecosystems from carbonate to fleshy algal dominated systems, accompanied by biodiversity loss and major simplification of the ecosystem.

Ocean Acidification

10.1038/s41598-018-29251-7

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Citations (125)

Established and Emerging Techniques for Characterising the Formation, Structure and Performance of Calcified Structures under Ocean Acidification

Plymouth Marine Science Electronic Archive (The Marine Biological Association (MBA), Plymouth Marine Laboratory (PML) and the Sir Alister Hardy Foundation for Ocean Science (SAHFOS).) (2019)

Susan C. Fitzer Vera B. S. Chan Yuan Meng Kanmani Chandra Rajan Michio Suzuki

Ocean acidification (OA) is the decline in seawater pH and saturation levels of calcium carbonate (CaCO3) minerals that has led to concerns for calcifying organisms such as corals, oysters and mussels because of the adverse effects of OA on their biomineralisation, shells and skeletons. A range of cellular biology, geochemistry and materials science approaches have been used to explore biomineralisation. These techniques have revealed that responses to seawater acidification can be highly variable among species, yet the underlying mechanisms remain largely unresolved. To assess the impacts of global OA, researchers will need to apply a range of tools developed across disciplines, many of which are emerging and have not yet been used in this context. This review outlines techniques that could be applied to study OA-induced alterations in the mechanisms of biomineralisation and their ultimate effects on shells and skeletons. We illustrate how to characterise, quantify and monitor the process of biomineralisation in the context of global climate change and OA. We highlight the basic principles, as well as the advantages and disadvantages, of established, emerging and future techniques for OA researchers. A combination of these techniques will enable a holistic approach and better understanding of the potential impact of OA on biomineralisation and its consequences for marine calcifiers and associated ecosystems.

Ocean Acidification

Global Change

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Biological Data and Carbonate Chemistry used in 'Ocean acidification locks algal communities in a species-poor early successional stage'

Zenodo (CERN European Organization for Nuclear Research) (2020)

Ben P. Harvey Koetsu Kon Sylvain Agostini Shigeki Wada Jason M. Hall‐Spencer

Long-term exposure to CO₂-enriched waters can considerably alter marine biological community development, often resulting in simplified systems dominated by turf algae that possess reduced biodiversity and low ecological complexity. Current understanding of the underlying processes by which ocean acidification alters biological community development and stability remains limited, making the management of such shifts problematic. Here, we deployed recruitment tiles in reference (pH_T 8.137 ± 0.056 SD) and CO₂-enriched conditions (pH_T 7.788 ± 0.105 SD) at a volcanic CO₂ seep in Japan in order to assess the underlying processes and patterns of algal community development. We assessed (i) algal community succession in two different seasons (Cooler months: January–July, and warmer months: July–January), (ii) the effects of initial community composition on subsequent community succession (by reciprocally transplanting pre-established communities for a further six months), and (iii) the community production of the resulting communities, in order to assess how their functioning is altered (following 12 months recruitment). Settlement tiles became dominated by turf algae under CO₂-enrichment and had lower biomass, diversity and complexity, a pattern consistent across seasons, which locked the community in a species-poor early successional stage. In terms of community functioning, the elevated pCO₂ community exhibited greater net community production, and yet this apparent boost did not result in increased algal community cover, biomass, biodiversity or structural complexity. Taken together, this shows that both new and established communities become simplified with rising CO₂ levels. Our transplant of pre-established communities from enriched-CO₂ to reference conditions demonstrated their high resilience, since they became indistinguishable from communities maintained entirely in reference conditions. This shows that meaningful reductions in pCO₂ will enable the recovery of algal communities. By understanding the ecological processes responsible for driving shifts in community composition, we can better assess how communities are likely to be altered by ocean acidification.

Ocean Acidification

10.5281/zenodo.4280017

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