Seasonal Variability of Golden Tides (Pylaiella littoralis, Phaeophyceae) and Nutrient Dynamics in a Potentially Eutrophic Intertidal Estuary DOI Creative Commons
Sara Haro, Ricardo Bermejo, Mark G. Healy

et al.

Journal of Marine Science and Engineering, Journal Year: 2024, Volume and Issue: 12(12), P. 2336 - 2336

Published: Dec. 20, 2024

Understanding macroalgal bloom development is crucial for managing eutrophication and protecting estuarine ecosystems. In this study, brown blooms (i.e., golden tides) were identified in a potentially eutrophic temperate estuary (NW Ireland). Pylaiella littoralis (Phaeophyceae, Ectocarpales) was monitored at low tide over seven sampling occasions between June 2016 August 2017. situ biomass, tissue nutrients (nitrogen (N) phosphorus (P)), isotopic signature (δ15N contents) measured, relations with environmental drivers explored. Difference Vegetation Index (NDVI) values from Sentinel-2 satellite imagery used to assess the spatiotemporal dynamics of P. biomass (2016–2022). The results indicated that NDVI attributed tides lowest 2022, during summer (coinciding high temperatures rainfall) lower shore on right margin an entering river. highest P content recorded April 2017, coinciding peaks (spring–early summer), suggesting elevated demand. Tissue N (>2%) N:P ratios (10–30) occasional limitation but no limitation. δ15N data very it not possible identify any primary source. These findings highlight importance nutrient management mitigating tides, addressing eutrophication, preserving

Language: Английский

Seasonal Variability of Golden Tides (Pylaiella littoralis, Phaeophyceae) and Nutrient Dynamics in a Potentially Eutrophic Intertidal Estuary DOI Creative Commons
Sara Haro, Ricardo Bermejo, Mark G. Healy

et al.

Journal of Marine Science and Engineering, Journal Year: 2024, Volume and Issue: 12(12), P. 2336 - 2336

Published: Dec. 20, 2024

Understanding macroalgal bloom development is crucial for managing eutrophication and protecting estuarine ecosystems. In this study, brown blooms (i.e., golden tides) were identified in a potentially eutrophic temperate estuary (NW Ireland). Pylaiella littoralis (Phaeophyceae, Ectocarpales) was monitored at low tide over seven sampling occasions between June 2016 August 2017. situ biomass, tissue nutrients (nitrogen (N) phosphorus (P)), isotopic signature (δ15N contents) measured, relations with environmental drivers explored. Difference Vegetation Index (NDVI) values from Sentinel-2 satellite imagery used to assess the spatiotemporal dynamics of P. biomass (2016–2022). The results indicated that NDVI attributed tides lowest 2022, during summer (coinciding high temperatures rainfall) lower shore on right margin an entering river. highest P content recorded April 2017, coinciding peaks (spring–early summer), suggesting elevated demand. Tissue N (>2%) N:P ratios (10–30) occasional limitation but no limitation. δ15N data very it not possible identify any primary source. These findings highlight importance nutrient management mitigating tides, addressing eutrophication, preserving

Language: Английский

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