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| Hauptverfasser: | , , , |
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| Format: | Artículo científico |
| Sprache: | en |
| Veröffentlicht: |
Applied and environmental microbiology
2026
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| Schlagworte: | |
| Online-Zugang: | https://pubmed.ncbi.nlm.nih.gov/41995306/ |
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Inhaltsangabe:
- Examining pathogenic abundance and environmental controls across macroalgae, sediment, and oysters. Geisser, Alexandra H Scro, Abigail K Smolowitz, Roxanna Fulweiler, Robinson W Geologic Sediments Animals Ostreidae Seaweed Vibrio parahaemolyticus Vibrio vulnificus Vibrio Estuaries Climate Change Seawater Climate change is accelerating the geographic spread and abundance of pathogenic species in coastal waters, posing growing threats to ecosystems and human health. We investigated the abundance and pathogenic gene presence of and across three common estuarine substrates (macroalgae, sediment, and oysters) in a temperate estuary. Macroalgae consistently harbored the highest counts in conjunction with elevated pathogenic gene frequencies, while oysters contained the lowest. Environmental conditions related to abundance were substrate and species specific. Temperature and salinity were most closely related to pathogenic abundance in oysters. In contrast, pathogenic abundance on macroalgae and within surface sediments was most closely related to water column nutrient concentrations, chlorophyll-a, and total suspended solids (TSS). Recognizing the different, substrate-specific environmental conditions related to pathogenic abundance is critical for predicting risks, improving water quality models, and public health in a changing climate. Pathogenic bacteria are ubiquitous in marine and estuarine environments and can cause severe human illness, yet ecological understanding and risk assessments often focus primarily on oysters in monitoring due to their relevance in seafood safety. However, oysters represent only one of the many environmental niches of in coastal ecosystems. This study revealed that within this coastal system, macroalgae harbored higher concentrations. Additionally, we demonstrate that pathogenic abundance on macroalgae, oysters, and sediments is each related to distinct environmental conditions.