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| Main Authors: | , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Marine environmental research
2026
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/41391421/ |
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Table of Contents:
- Seaweed beds-driven enhancement of energy metabolism functions and their multifaceted ecological effects: A case study from Xiangyun Cove marine ranch. Zheng, Zhenbing Ma, Manman Gu, Wenhui Wang, Shentong Wang, Xulei Wang, Guangce Seaweed China Energy Metabolism Seawater Ecosystem Environmental Monitoring Animals Geologic Sediments Macroalgal (seaweed) beds are key nearshore habitats and functional components of marine ranches, yet their integrated ecological roles remain underexplored. Here, we combined in situ environmental profiling with multi-omics to evaluate how artificial macroalgal beds in Xiangyun Cove (Bohai Sea, China) influence water quality, microbial community structure and function, sediment biogeochemistry, and the growth of an economic species (oyster). Environmental measurements showed that seaweed beds increased dissolved oxygen, reduced turbidity (>3.5-fold lower than control), and elevated chlorophyll a and phycocyanin, indicating enhanced primary productivity. Nutrient analyses revealed consistently lower DIN, NO, NO, NH, DIP, and Si in bed sites versus control, consistent with macroalgal nutrient uptake. Epiphytic microbial communities on green algae, brown algae, and red algae were strongly host-specific, with distinct alpha-diversity patterns and genera-level taxa. Sediment beneath seaweed beds exhibited higher microbial richness and diversity and was significantly enriched in sulfur-metabolizing taxa, suggesting stimulated sulfur cycling may linked to algal polysaccharide inputs. Although seawater bacterial community composition showed no significant site differences by 16S profiles, metatranscriptomes revealed pronounced functional plasticity: seaweed-bed waters, particularly near brown and red algae, were enriched for energy metabolism genes and carbohydrate-active enzymes (CAZy), whereas the control site showed higher abundance of ammonia-oxidizing taxa. Oysters collected within seaweed beds were significantly larger than those from non-algal areas. Collectively, artificial seaweed beds act as ecosystem engineers that improve environmental quality, modulate microbial functional capacities, especially sulfur cycling and polysaccharide degradation, and support enhanced aquaculture performance, providing a foundation for integrated "algal-shellfish-microbe" ecological ranching.