Seagrass-driven changes in carbonate chemistry enhance oyster shell growth

Ricart, Aurora M.; Gaylord, Brian; Hill, T. M.; Sigwart, Julia D.; Shukla, Priya; Ward, Melissa; Ninokawa, Aaron; Sanford, Eric

doi:10.1007/s00442-021-04949-0

Cited by 19 publications

(14 citation statements)

References 77 publications

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“…It has also been shown that dense oyster beds could modify the alkalinity of an entire bay, likely affecting influenced‐areas adjacent to these mollusc beds (Waldbusser et al, 2013). In addition, the capacities of macrophytes in buffering the negative effects of hypoxic events and/or long‐term ocean acidification on economically important shellfish (Ricart, Gaylord, et al, 2021; Young & Gobler, 2018) highlights a new role for commercial seaweeds in the context of an integrated multi‐trophic aquaculture (Fernández et al, 2019; Troell et al, 2009). This ability of engineer species in shaping the local conditions for adjacent ecosystems is, nevertheless, often underestimated and requires more field studies (e.g.…”

Section: Chemical Habitats Resulting From Hydrodynamics and Biologica...mentioning

confidence: 99%

“…Biologically‐driven fluctuations are highly dependent on abiotic drivers and can change drastically according to the season (Falkenberg et al, 2021): seasonality of the variations is rarely assessed. The spatial extent of chemical refugia in situ is complex to assess (Ricart, Gaylord, et al, 2021) and often prevented by technical and logistical limitations. To overcome these identified gaps and to provide accurate data for better understanding the future of coastal benthic ecosystems, we advise the scientific community to pay attention to the following main points: Accurately report the intensity and type of hydrodynamics (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…These local positive effects of macrophyte communities against ocean acidification have been rarely modelled (Pacella et al, 2018) and studied in the field (Ricart, Ward, et al, 2021) and have to be considered with caution. Local natural pH variations have to be carefully characterized (Van Dam et al, 2021a, 2021b) to understand if this buffering effect might help associated species to endure stressful future pH shifts, as experimentally shown in seagrass communities (Cox et al, 2017; Guilini et al, 2017; Ricart, Gaylord, et al, 2021). For more details about the buffering effects of marine macrophytes, see Falkenberg and collaborators (2021) who reviewed the role of seagrass and seaweeds habitats as refugia from ocean acidification and their implementation in management plans.…”

Section: Roles Of Chemical Habitats To Face Ocean Global Change (Acid...mentioning

confidence: 99%

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Role of hydrodynamics in shaping chemical habitats and modulating the responses of coastal benthic systems to ocean global change

Noisette

Pansch

Wall

et al. 2022

Global Change Biology

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Section: Chemical Habitats Resulting From Hydrodynamics and Biologica...mentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Roles Of Chemical Habitats To Face Ocean Global Change (Acid...mentioning

confidence: 99%

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Role of hydrodynamics in shaping chemical habitats and modulating the responses of coastal benthic systems to ocean global change

Noisette

Pansch

Wall

et al. 2022

Global Change Biology

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“…Local increases in pH by these marine producers might protect associated organisms from the impacts of low pH. For example, the temperate seagrass Zostera marina increased the growth rate of oysters in experimental mesocosms (Ricart, Gaylord, et al, 2021). However, producer-driven increases in pH and benefits for associated organisms are not universal (e.g., Greiner et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Biological modification of coastal pH depends on community composition and time

Sorte

Kroeker

Miller

2023

Ecology

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Biological processes play important roles in determining how global changes manifest at local scales. Primary producers can absorb increased CO2 via daytime photosynthesis, modifying pH in aquatic ecosystems. Yet producers and consumers also increase CO2 via respiration. It is unclear whether biological modification of pH differs across the year, and, if so, what biotic and abiotic drivers underlie temporal differences. We addressed these questions using the intensive study of tide pool ecosystems in Alaska, USA, including quarterly surveys of 34 pools over 1 year and monthly surveys of five pools from spring to fall in a second year. We measured physical conditions, community composition, and changes in pH and dissolved oxygen during the day and night. We detected strong temporal patterns in pH dynamics. Our measurements indicate that pH modification varies spatially (between tide pools) and temporally (across months). This variation in pH dynamics mirrored changes in dissolved oxygen and was associated with community composition, including both relative abundance and diversity of benthic producers and consumers, whose role differed across the year, particularly at night. These results highlight the importance of the time of year when considering the ways that community composition influences pH conditions in aquatic ecosystems.

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“…management efforts for other biota in SFB. Similar effects of low salinity in SFB have been documented in several SFB taxa, including: non-native fouling competitors (Chang et al 2018), benthic mudflat communities (Cox 2019), rockweed (Wegener 2021), soft sediment infauna (Ruiz, Jimenez, and Chang unpublished data), zooplankton (Gignoux-Wolfsohn et al unpublished data), and eelgrass (Boyer et al 2017) and its epifaunal communities (Ayala 2021).Eelgrass (Zostera marina) has been restored alongside Olympia oysters in SFB Living Shorelines projects, and the two native foundation species may benefit one another (e.g.,Wall et al 2008;Boyer et al 2017;Ricart et al 2021). Eelgrass has faced similar challenges with low salinity events in SFB, so these findings can help inform restoration of both taxa (Zabin et al2022).Broader Management ImplicationsThe annual changes in population density I noted demonstrate the importance of consistent annual monitoring of restoration projects.…”

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confidence: 99%

Identifying refuges from climate extremes to enhance conservation in a shallow estuary

Allie

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Extreme climatic events such as drought, floods, and heat waves are increasing in frequency and severity due to climate change, leaving estuarine communities susceptible to significant ecological consequences. Extreme rainfall causes low salinity in parts of San Francisco Bay, and as a result native Olympia oysters (Ostrea lurida) have experienced multiple mass mortality events over the past decade. Existing studies have evaluated the short-term impacts of these events on survival and recruitment, but not decadal-scale population trends. Olympia oyster population density and recruitment in San Francisco Bay were monitored from approximately 2009 to 2022 to identify spatial refuges which could support population stability in the face of low salinity and high temperature events intensified by climate change. I found that oyster density and recruitment generally increase with distance upstream in the estuary. However, the populations with the highest average density and recruitment endure far more exposure to episodic high temperature and extreme freshwater outflow events, and therefore experience enormous booms and busts over time. Compared with sites near the mouth of San Francisco Bay, the farthest upstream site experienced approximately 4 times more exposure both to high temperatures (≥30°C) across the study period and to low salinity (≤5 psu) in a record-breaking wet year. This difference was even greater when compared with the downstream region of San Francisco Bay. Results indicate that upstream sites are already experiencing more extreme conditions than other regions of the estuary, and such exposure will likely become more frequent and severe with climate change. These findings highlight the benefits of a multi-site conservation approach for Olympia oysters that prioritizes sites in the central region of San Francisco Bay for the best balance between protection and strong population metrics, while conserving upstream sites for their high density and recruitment during dry years, and downstream sites for the greatest protection from climate extremes. Understanding the spatiotemporal impacts of extreme climatic events is a key step in advancing climate change-resilient estuarine conservation.

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Seagrass-driven changes in carbonate chemistry enhance oyster shell growth

Cited by 19 publications

References 77 publications

Role of hydrodynamics in shaping chemical habitats and modulating the responses of coastal benthic systems to ocean global change

Role of hydrodynamics in shaping chemical habitats and modulating the responses of coastal benthic systems to ocean global change

Biological modification of coastal pH depends on community composition and time

Identifying refuges from climate extremes to enhance conservation in a shallow estuary

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