Optimising recruitment in habitat creation for the native European oyster (Ostrea edulis): Implications of temporal and spatial variability in larval abundance

Chapman, E. C.; Rodríguez-Pérez, Ana; Hugh‐Jones, Tristan; Bromley, Cass; James, Mark; Diele, Karen; Sanderson, William

doi:10.1016/j.marpolbul.2021.112579

Cited by 8 publications

(8 citation statements)

References 62 publications

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“…Several of these factors were considered ‘Essential’ ( n = 6) as they underpin the biological niche in which oyster growth and reproduction can occur (temperature and salinity in particular, Figure 4). Water temperature was considered ‘Essential’ as it provides the cue for oyster reproduction in summer (Chapman et al, 2021). The maximum temperature threshold (28–30°C; Bayne, 2017) was also considered ‘Essential’ in light of anthropogenic climate change.…”

Section: Resultsmentioning

confidence: 99%

Site selection for European native oyster (Ostrea edulis) habitat restoration projects: An expert‐derived consensus

Hughes

Bonačić

Cameron

et al. 2023

Aquatic Conservation

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1. The European native oyster (Ostrea edulis) is a threatened keystone species which historically created extensive, physically complex, biogenic habitats throughout European seas.2. Overfishing and direct habitat destruction, subsequently compounded by pollution, invasive species, disease, predation and climate change have resulted in the functional extinction of native oyster habitat across much of its former range.3. Although oyster reef habitat remains imperilled, active restoration efforts are rapidly gaining momentum. Identifying appropriate sites for habitat restoration is an essential first step in long-term project success.4. In this study, a three-round Delphi process was conducted to determine the most important factors to consider in site selection for European native oyster habitat restoration projects.5. Consensus was reached on a total of 65 factors as being important to consider in site selection for European native oyster habitat restoration projects. In addition to the abiotic factors typically included in habitat suitability models, socio-economic and logistical factors were found to be important. Determining the temporal and spatial variability of threats to native oyster habitat restoration and understanding the biotic factors present at a proposed restoration site also influence the potential for project scale-up and longevity.

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Section: Resultsmentioning

confidence: 99%

Site selection for European native oyster (Ostrea edulis) habitat restoration projects: An expert‐derived consensus

Hughes

Bonačić

Cameron

et al. 2023

Aquatic Conservation

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“…Besides a temperature threshold, several studies recommend the use of temperature‐sum (i.e. the accumulated temperature when higher than a threshold temperature, measured in ‘degree‐days’) as a predictor for reproduction timing (Maathuis et al, 2020; Chapman et al, 2021). Nevertheless, temperature‐sum is location dependent (Chapman et al, 2021) and non‐mechanistic, so can therefore not be used in spatial applications.…”

Section: Discussionmentioning

confidence: 99%

Northern Europe's suitability for offshore European flat oyster (Ostrea edulis) habitat restoration: A mechanistic niche modelling approach

Stechele

Hughes

Degraer

et al. 2023

Aquatic Conservation

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1. After centuries of overexploitation, European flat oyster (Ostrea edulis) habitats are increasingly being protected and large-scale oyster habitat restoration projects have been initiated in the North Sea, the English Channel, the Irish Sea and the north-eastern Atlantic.2. Understanding the habitat requirements of flat oysters is key in the selection process of restoration sites.3. In this study, a theoretical niche for all life stages of the flat oyster is determined using a dynamic energy budget model forced with temperature, chlorophyll a and salinity in combination with sediment composition. The suitability of Northern Europe's marine environment for flat oysters is evaluated by applying the proposed niche model on a spatial scale and evaluating spatio-temporal variability in life history traits and metabolic characteristics, such as fitness, reproductive output, settlement success and growth.4. Results show that habitat suitability is limited by low maximum summer temperature and low food availability at higher latitudes and in areas under strong influence of the Atlantic Ocean. Restoration efforts in Ireland and Scotland should be confined to protected and shallow coastal environments. Suitability in the southern North Sea is patchy and mainly depends on seabed substrate. The nearshore areas of the English Channel are highly suitable.5. The georeferenced dataset shared in this study will be useful for restoration practitioners.

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“…edulis larvae displayed a strong benthic preference throughout their development [ 32 ]. If this behaviour is not overridden by local hydrodynamics [ 33 ], it would markedly reduce dispersal distances despite potentially long development times. This study showed that larval behaviour can also considerably prolong pelagic durations if settlement preferences are not met.…”

Section: Discussionmentioning

confidence: 99%

“…Understanding larval dispersal is therefore key for ensuring the persistence and connectivity of restored O . edulis beds, as well as to inform where to restore new populations to ensure connectivity and recruitment [ 31 – 33 ].…”

Section: Introductionmentioning

confidence: 99%

A small step or a giant leap: Accounting for settlement delay and dispersal in restoration planning

2021

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Understanding larval duration and hence dispersal potential of the European oyster Ostrea edulis is crucial to inform restoration strategies. Laval duration has an obligatory period of maturity to pediveliger (when larvae are ready to settle), but also an unknown period until metamorphosis is triggered by a settlement cue. The extent to which larvae can prolong the pediveliger period and delay metamorphosis has not been studied. Here we show that O. edulis larvae can delay metamorphosis for a period of 11 days, while retaining the capability to settle in high proportions when presented with a suitable settlement cue. O. edulis larvae are likely to be able to delay metamorphosis even further, since 80% of larvae in the control treatment were still alive when the experiment was terminated at day 14. The results indicate the ability of O. edulis larvae to more than double pelagic duration and probably further delay metamorphosis. We discuss these findings in the context of larval mortality, and the importance of O. edulis’ larval settlement requirements for dispersal potential, recruitment success and connectivity of restoration sites.

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Optimising recruitment in habitat creation for the native European oyster (Ostrea edulis): Implications of temporal and spatial variability in larval abundance

Cited by 8 publications

References 62 publications

Site selection for European native oyster (Ostrea edulis) habitat restoration projects: An expert‐derived consensus

Site selection for European native oyster (Ostrea edulis) habitat restoration projects: An expert‐derived consensus

Northern Europe's suitability for offshore European flat oyster (Ostrea edulis) habitat restoration: A mechanistic niche modelling approach

A small step or a giant leap: Accounting for settlement delay and dispersal in restoration planning

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