Effect of typhoon‐induced intertidal‐flat erosion on dominant macrobenthic species (<i>Meretrix meretrix</i>)

Shi, Benwei; Yang, S.L.; Temmerman, Stijn; Bouma, Tjeerd J.; Ysebaert, Tom; Wang, Sikai; Zhang, Yingxin; Wu, Jihua; Yang, Hua-Qian; Zhang, Longhui; Zuo, Liqin; Wang, Ya Ping

doi:10.1002/lno.11953

Cited by 18 publications

(19 citation statements)

References 62 publications

(91 reference statements)

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“…These bioturbating activities can lead to more erosion in cohesive sediment (Widdows et al 2000; Le Hir et al 2007; Li et al 2017). Understanding the effect of benthic bioturbators on sediment erodibility is essential, as short‐term transitions between erosion and accretion may affect the long‐term stability of tidal flat ecosystems (e.g., see Bouma et al 2016; Shi et al 2021).…”

Section: Figmentioning

confidence: 99%

Temporal dynamics of heatwaves are key drivers of sediment mixing by bioturbators

Zhou

Steiner

Fivash

et al. 2023

Limnology & Oceanography

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Heatwaves affect tidal flat ecosystems by altering the bioturbating behavior of benthic species, with potential consequences for sediment oxygenation, particle mixing, and erodibility. Although the frequency and duration of heatwaves are expected to increase under global warming scenarios, we lack insights into how heatwaves' temporal dynamics affect bioturbating behaviors. Using the widely distributed bioturbator Cerastoderma edule as model species, we quantified how heatwaves with identical heat-sum but different temporal dynamics (i.e., 3-vs. 6-d heating and normal temperature cycles) affect bioturbating behaviors and the sediment mixing processes in tidal mesocosms. Our results show that short but frequent 3-d heatwave cycles increased the magnitude of bioturbating behaviors, thereby resulting in more bio-mixed sediment than observed under infrequent prolonged 6-d heatwave cycles. This unexpected result could be ascribed to the weakening health condition indicated by a high death rate (47.37%) under 6-d heatwave cycles than in 3-d and no-heatwave control cycles. Present findings reveal that the impact of heatwaves on sediment bioturbation will strongly depend on the temporal dynamics of future heatwaves: bioturbation will be enhanced unless the heatwave duration exceeds species resistance and increases mortality.

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Section: Figmentioning

confidence: 99%

Temporal dynamics of heatwaves are key drivers of sediment mixing by bioturbators

Zhou

Steiner

Fivash

et al. 2023

Limnology & Oceanography

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“…With the development of aquaculture and coastal economies, attention has been paid to the impacts of marine animals on erosion and deposition in tidal flats (e.g. Meretrix meretrix (Li et al, 2020) and clam (Li et al, 2021)), impacts of human activities on tidal flats (Lu et al, 2013;Gao et al, 2019), and tidal flat ecosystems during extreme weather conditions (Chen et al, 2012;Shi et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamics in the tidal flat in semi-enclosed Xiangshan Bay

Kong

et al. 2023

Front. Mar. Sci.

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Tidal flats provide a foundation for biological diversity and marine economy. Xiangshan Bay is a semi-enclosed bay that shelters large areas of tidal flats, and is known for its aquaculture. In this study, field trips were conducted in late autumn to measure the water level, current, water temperature, tidal flat temperature, and turbidity data of the tidal flat in the bay during Typhoon Lingling. The field data were well calibrated and used to investigate the hydrodynamics, temperature, and turbidity of the tidal flat. The results showed that the spring-neap tidal cycles at the sea surface level were well captured at both stations. The maximum tidal range was 5.5 m and 1.5 m during spring and neap tides, respectively. The tidal flat was occasionally exposed to air occasionally (30 min). The current velocity (<0.2 m/s) and waves (<0.15 m) at the field stations were weak, and the direction of flow was controlled by the geomorphology, even during Typhoon Lingling. Water was more turbid at station S2 (<0.8 kg/m3) than at station S1 (<0.2 kg/m3). The sea water temperature and tidal flat temperature were affected by tidal cycles, with larger variations occurring during spring tides than during neap tides. The maximum value of seawater temperature at S1 station was greater than that at station S2 during spring tides. The intrinsic mode functions (IMFs) of sea water temperature and surface tidal flat temperature were similar, as they are both subject to sea-air-tidal flat interactions. The IMFs of the middle and bottom layers in the tidal flat were less correlated. Temperature fluctuations in seawater and tidal flats were mainly affected by air temperature and tides. Small-scale features (>0.5 Hz) were important for water and tidal flat temperatures, particularly during typhoons. These findings provide field data for future studies on eco-hydrology and coastal engineering in tidal flats.

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“…On one hand, coastal morphology, associated environmental forcing (e.g. tides, waves) and food availability exert a first-order control on the type of habitats as well as abundance and trait expression of biota (Murray et al, 2008;Holzhauer et al, 2019;Shi et al, 2021). On the other hand, biota in turn actively modify their environment to attain an optimized fitness for their living conditions (Jones et al, 1994;Hastings et al, 2007;Li et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Small-scale benthic faunal activities may lead to large-scale morphological change- A model based assessment

2022

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A novel 3-dimensional numerical model resolving dynamic interactions between environmental drivers and benthic fauna was applied to an idealized domain as analogous to typical tidal embayments. The aim is to derive insights into the role of benthic fauna in guiding long-term (decadal to centennial) coastal morphological evolution at a system scale. Three major functions by benthic fauna on sediment dynamics, namely bio-destabilization, bio-deposition and bio-stabilization, were incorporated. Results indicate that each of the three functions is able to guide a unique and profound long-term change of the embayment morphology. Bioturbation-induced sediment mixing and bio-destabilization may result in net sediment export out of the embayment, whilst bio-deposition and bio-stabilization tend to alter the embayment toward a net sediment import environment. Benthic fauna is able to modify large-scale hydro-morphology toward a state favorable for living. A combined effect of the three functions is not just a simple neutralization of the opposing impacts between sediment stabilization and destabilization. Rather, it leads to a unique response of the embayment morphology due to interactions between different benthic functional groups. Comparison with a real tidal embayment (Jade Bay from the Wadden Sea) justified a general validity of the model results in terms of statistics in both morphology and benthic fauna, and suggested an equal importance of interactions between benthic fauna and bed morphology and between different benthic functional groups in guiding morphological development of complex coastal systems.

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Effect of typhoon‐induced intertidal‐flat erosion on dominant macrobenthic species (Meretrix meretrix)

Cited by 18 publications

References 62 publications

Temporal dynamics of heatwaves are key drivers of sediment mixing by bioturbators

Temporal dynamics of heatwaves are key drivers of sediment mixing by bioturbators

Hydrodynamics in the tidal flat in semi-enclosed Xiangshan Bay

Small-scale benthic faunal activities may lead to large-scale morphological change- A model based assessment

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