Delta sustainability from the Holocene to the Anthropocene and envisioning the future

Nature Sustainability, Journal Year: 2024, Volume and Issue: 7(10), P. 1235 - 1246

Published: Oct. 9, 2024

Language: Английский

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Tidal Exclusion Barriers Fragment an Invertebrate Community into Taxonomically and Functionally Distinct Estuarine and Wetland Assemblages

Journal of Marine Science and Engineering, Journal Year: 2025, Volume and Issue: 13(4), P. 635 - 635

Published: March 22, 2025

Various types of tidal barriers are used in estuaries to reduce saltwater intrusion and regulate freshwater discharge, but they often alter the physicochemical environment faunal composition. With use these structures expected increase due climate change, there is a need understand their impacts. A exclusion barrier Ramsar-listed Vasse–Wonnerup Estuary (Australia) was found act as an ecotone, fragmenting estuarine gradient into two distinct components, relatively stable marine-like downstream highly variable oligohaline hypersaline (~0 >100 ppt) upstream. The regions contained speciose functionally rich fauna, comprising mainly polychaetes bivalves. upstream were taxonomically depauperate, containing insects, gastropods, ostracods typically saline wetlands. fragmentation estuary has likely impacted provision ecosystem services, with fauna burrowing species that bioturbate and, thus, aid nutrient cycling. In contrast, environmental conditions caused by resultant epifaunal invertebrate assemblages little bioturbation, provide nutrition for avian fauna. These results may help understanding impacts constructing new coastal ecosystems response change.

Language: Английский

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Estuarine dams and weirs: Global analysis and synthesis

Marine Geology, Journal Year: 2024, Volume and Issue: 477, P. 107388 - 107388

Published: Aug. 28, 2024

Language: Английский

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Spatial Variation of Asymmetry in Velocity and Sediment Flux along the Artificial Aam Tidal Channel

Water, Journal Year: 2024, Volume and Issue: 16(16), P. 2323 - 2323

Published: Aug. 18, 2024

Tidal flats, crucial for biodiversity and ecosystem services, are facing significant alterations due to human activities such as reclamation. In South Korea, over 65% of tidal flats have been reclaimed since the 1970s, resulting in morphological changes altered sediment transport dynamics. This study investigates processes artificial Aam channel, created part megacity development project Incheon, Korea. Using data from Acoustic Doppler Current Profiler Vector instruments deployed 2019 2021, we analyzed asymmetry, current velocities, shear stress, suspended concentration. Our results reveal a pronounced asymmetry influencing transport, with ebb-dominant currents near channel entrance flood-dominant interior. We observed deposition landward section driven by mixing rainfall events. These findings highlight complex interactions between structures natural dynamics, informing future coastal management strategies.

Language: Английский

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Vulnerable and vital: Intermittent estuaries deserve global attention

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 20, 2024

Intermittently open/closed estuaries provide important ecosystem services but are often overlooked in coastal–catchment research and management. These highly vulnerable to human/climate disturbances due their tendency close off from the ocean, yet processes/dynamics remain under-researched. This study maps global distribution of at least 2,245 intermittent estuaries, whose catchments currently support 55 million people, with projections rising 101 by 2100. Assessing three decades scholarly articles indicated that only 7% these sites have been studied. Academic literature on accounted for 0.5% total all despite systems representing 4–5% estimated number estuaries. Significant gaps exist Asia, South America, Africa, where largest, most susceptible populations reside. 90% existing is conducted (southern) Africa (42%), Oceania (35%), North America (14%), predominantly through domestic efforts. From 1992 2023, 60% focused physio-chemical eco-hydro-geomorphological topics, minimal attention services, climatic/human disturbances, Our assessment underscores need increased focus suggests strategies promote international collaborations, including leadership intergovernmental organisations.

Language: Английский

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Comparative analysis of niche adaptation strategies of AOA, AOB, and comammox along a gate-controlled river-estuary continuum

Water Research, Journal Year: 2024, Volume and Issue: 273, P. 122964 - 122964

Published: Dec. 17, 2024

Language: Английский

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