What question did this study set out to answer?

To evaluate the global impacts of tidal barriers on estuarine and migratory fish populations and identify effective management and engineering interventions to remediate degraded ecosystems.

May 22, 2023Estuarine Coastal and Shelf ScienceOpen Access

Tidal barriers and fish – Impacts and remediation in the face of increasing demand for freshwater and climate change

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Authors

CBChristopher M. BiceUniversity of Massachusetts Dartmouth JHJeroen HuismanVan Hall Larenstein University of Applied Sciences MKMatthew E. KimballUniversity of South Carolina

Discussion

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Implication

Comparative review demonstrates tidal barriers drive severe declines in estuarine and diadromous fish populations, indicating an urgent need for fish passage and flow restoration.

Key Points

To evaluate the global impacts of tidal barriers on estuarine and migratory fish populations and identify effective management and engineering interventions to remediate degraded ecosystems.
Synthesized ecological mechanisms of barrier impacts across lower river reaches, focusing on connectivity, tidal flux, habitat modification, and altered salinity regimes.
Examined comparative case studies from the Netherlands, southeastern United States, and southeastern Australia to assess contemporary restoration approaches across distinct biogeographical regions.
Tidal barriers consistently induce population declines in diadromous and estuarine-dependent fish species by obstructing migration routes, eliminating tidal movement, and converting brackish habitats to freshwater.
Projected sea-level rise, altered precipitation regimes from climate change, and escalating human demand for freshwater will accelerate barrier installation and exacerbate ecological disconnection.
Successful ecosystem restoration requires management frameworks that provide dedicated fish passage, reinstate natural tidal flux, and allocate downstream environmental flows.

Cite This Study

Bice et al. (2023) studied this question.

synapsesocial.com/papers/6a156378814bf8ec9a4e8312 https://doi.org/10.1016/j.ecss.2023.108376

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Implication

Comparative review demonstrates tidal barriers drive severe declines in estuarine and diadromous fish populations, indicating an urgent need for fish passage and flow restoration.

Tidal barriers and fish – Impacts and remediation in the face of increasing demand for freshwater and climate change

Discussion

Member takes

Implication

Key Points

Cite This Study

Tidal barriers and fish – Impacts and remediation in the face of increasing demand for freshwater and climate change

Discussion

Member takes

Implication

Key Points

Cite This Study

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