Nuanced influences of subtidal artificial shellfish structures on nekton communities in urbanised estuaries

Marine and Freshwater Research, Год журнала: 2025, Номер 76(6)

Опубликована: Апрель 9, 2025

Context Reef installation is increasingly considered for urbanised estuaries to enhance and restore ecological functions. Restoration structures are expected provide nekton habitat benefits, but early outcomes poorly understood. Aims This study assessed assemblage variation associated with an oyster reef restoration site, situated within the anthropogenically modified Port River–Barker Inlet estuary. Methods Nekton communities environmental variables were measured 6 weeks before, 14 months following restoration, at a control site. Modelling was used assess spatio-temporal variation. Key results Video monitoring detected 34 species, harvestable comprising 60.3% of total abundances. assemblages strongly influenced by interannual effects, few being directly related activities. supported non-native gobies during study. Conclusions These suggest that small-scale can have little detectable impact on fish in stages estuarine restoration. distinct seasonal Implications In urban characterised pre-existing artificial structures, small trial reefs may be functionally redundant as habitats until sufficient spatial-scale functional changes achieved.

Язык: Английский

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Turning riprap into reefs: Integrating oyster shells into shoreline armouring

Marine Pollution Bulletin, Год журнала: 2025, Номер 216, С. 117933 - 117933

Опубликована: Апрель 14, 2025

Язык: Английский

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Quantifying the Potential Water Filtration Capacity of a Constructed Shellfish Reef in a Temperate Hypereutrophic Estuary

Diversity, Год журнала: 2023, Номер 15(1), С. 113 - 113

Опубликована: Янв. 13, 2023

Shellfish reefs have been lost from bays and estuaries globally, including in the Swan-Canning Estuary Western Australia. As part of a national program to restore ecosystem services that such once provided return this habitat near extinction, mussel Mytilus galloprovincialis was selected for large-scale shellfish reef construction project estuary. To assess potential filtration capacity reef, estuary seston quality, feeding behavior, valve gape activity were quantified laboratory field during winter summer. In general, water contained high total particulate concentrations (7.9–8.7 mg L−1). Standard clearance rates greater (1.9 L h−1; 17 °C) than summer (1.3 25 °C), latter producing extremely low absorption efficiencies (37%). Mussel valves remained open ~97% ~50% time summer, respectively. They often displayed erratic behavior possibly due elevated temperatures toxic microalgae Alexandrium spp. Despite numerous stressors, at capacity, estimated filter 35% volume over winter, incorporating 42.7 t organic matter into tissue. The would thus make substantial contribution improving quality.

Язык: Английский

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Link marine restoration to marine spatial planning through ecosystem‐based management to maximize ocean regeneration

Aquatic Conservation Marine and Freshwater Ecosystems, Год журнала: 2023, Номер 33(11), С. 1387 - 1399

Опубликована: Авг. 7, 2023

Abstract The speed at which marine and coastal ecosystems are being degraded due to cumulative impacts limits the effectiveness of conservation strategies. To abate ocean degradation allow regeneration, planning needs be improved ecological restoration will needed. This study explores potential incorporating into spatial (MSP) anchored ecosystem‐based management (EBM), termed EB‐MSP, for maximizing regeneration. perspective explicitly brings both passive active restorations EB‐MSP in a broad holistic framework achieving recovery ecosystems, their functions valuable services. By proposing restoration‐focused framework, we highlight co‐benefits interlinking MSP through EBM core principles. Such benefits include scaling‐up effectiveness, greater guarantee that sustainability goals met improvements as an integrated tool with address climate change. Together, this promote regeneration alongside sustainable use prevent further much‐needed recovery.

Язык: Английский

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Anthropogenic noise disrupts acoustic cues for recruitment

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 291(2027)

Опубликована: Июль 23, 2024

Anthropogenic noise is rising and may interfere with natural acoustic cues used by organisms to recruit. Newly developed technology provides enriched settlement boost recruitment of target navigating restoration sites, but can it in noise-polluted sites? To address this dilemma, we coupled replicated aquarium experiments field experiments. Under controlled laboratory conditions, enrichment boosted 2.57 times the absence anthropogenic noise, yielded comparable its presence (i.e. no boosting effect). Using same technique, then tested replicability these responses real-world settings where independently ‘sites’ are unfeasible owing inherent differences soundscapes. Again, increased was low (by 3.33 times), had effect at a site pollution. Together, laboratory-to-field outcomes indicate that mask signal enrichment. While pollution reduce effectiveness enrichment, some our reported observations suggest per se might also provide an attractive cue for oyster larvae These findings underscore complexity larval behavioural stimuli during processes.

Язык: Английский

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