Improving satellite monitoring of coastal inundations of pelagic Sargassum algae with wind and citizen science data

Putman, Nathan F.; Beyea, R. Taylor; Iporac, Lowell Andrew R.; Triñanes, Joaquín; Ackerman, E.I.; Olascoaga, M. J.; Appendini, Christian M.; Arriaga, Jaime; Collado‐Vides, Ligia; Lumpkin, Rick; Hu, Chuanmin; Goñi, Gustavo

doi:10.1016/j.aquabot.2023.103672

Cited by 9 publications

(3 citation statements)

References 34 publications

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“…We neglect the effects of the seabed b, waves and wind (Putman et al, 2023) on the forcings, as well as weather variability and even cyclonic conditions. We will study two uniform sea current velocities.…”

Section: Hydrodynamicmentioning

confidence: 99%

Structural analysis of Sargassum floating barrage. First study on a standard section 50 m long illustrated by satellite imagery in Martinique

Muttin

2023

Preprint

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Public health suffers from noxious gas of beached Sargassum algae. Floating barrages containing them at sea will be useful provided efficiently catch them and resist to hydrodynamic pressure. Nowadays design and installation of algae barrages are empiric. Structural break, anchor and mooring chain drifts can arise. We provide a mechanical model to evaluate stresses and loads on a structure made of nets and moorings. Hydrodynamic uncertainties occur through catches, fouling, and a range of sea currents appearing in lagoons or sheltered bays. We consider a nonlinear finite-element model of elastic membrane in large displacements and small strains. We study some forcings fixed a priori on a standard section of barrage. A section 50 m long, 1 m high, with two net-faces is examined at low and moderate current velocities, 0.05 and 0.35 m.s-1, while assuming specific vertical and horizontal catch pressures. A barrage installed in lagoon at Le François on Martinique Island and being observable by satellite imagery could benefit of the computed net and mooring tensions.

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Section: Hydrodynamicmentioning

confidence: 99%

Structural analysis of Sargassum floating barrage. First study on a standard section 50 m long illustrated by satellite imagery in Martinique

Muttin

2023

Preprint

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“…For these reasons, we recommend method 2 over method 1 for measuring beached sargassum samples. Putman et al (2023) demonstrate the success of using citizen science in monitoring coastal inundations, there is also an opportunity to use this here to expand the number of samples collected and further explore the spectral properties, for example, low-cost sensors or photography could be an accessible method of data collection to distinguish sargassum decomposition levels.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Innovative Spectral Characterisation of Beached Pelagic Sargassum Towards Remote Estimation of Biochemical and Phenotypic Properties

Fidai

Machado

Almela

et al. 2023

Preprint

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“…Monitoring efforts of sargasso primarily utilize high-resolution satellite imagery to cover a large spatial area [17][18][19], yet they are limited in resolution at the nearshore, local scale where sargasso brown tide effects often occur. In contrast, local-scale monitoring methods can ground truth satellite imagery by providing a finer-scale estimate of biomass [15,16,20]. In situ monitoring can also capture variations in morphotype composition, which can have implications for estimating nearshore impacts via inputs of nutrient and metal contents and associated epibionts onto the coastal area [21,22].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Analysis of Biomass, Nutrient, and Heavy Metal Contributions of Pelagic Sargassum Species (Phaeophyceae) Inundations in South Florida

Hatt,

Bally,

Iporac

et al. 2024

Phycology

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Pelagic Sargassum landings (hereby referred to as sargasso) increased dramatically in 2011 throughout the equatorial tropical Atlantic due to the formation of the Great Atlantic Sargassum Belt (GASB). Despite increasing reports, understanding of local abundances and vegetative characteristics, especially in South Florida, remains limited. From 2018 to 2021, sargasso was collected at two South Florida beaches, with additional sampling at a third beach to assess nutrient and heavy metal concentrations. Biomass landings varied greatly, with S. fluitans III predominant during the “peak season” (May to July) and S. natans I predominant in the “off season”, while S. natans VIII was consistently least abundant. This suggests that South Florida may receive sargasso from the Sargasso Sea during the low season and from the GASB during the peak sargasso season. Across all three morphotypes, mean nitrogen (N) and phosphorus (P) contents were 0.97% and 0.04% (dry weight), respectively. Out of the 16 heavy metals detected, our values were similar to those reported across the Caribbean. Arsenic was the most prevalent heavy metal, with sargasso containing epibionts having higher arsenic concentrations. These results provide comprehensive information to better understand the characteristics and potential origin of sargasso landings in South Florida.

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Improving satellite monitoring of coastal inundations of pelagic Sargassum algae with wind and citizen science data

Cited by 9 publications

References 34 publications

Structural analysis of Sargassum floating barrage. First study on a standard section 50 m long illustrated by satellite imagery in Martinique

Structural analysis of Sargassum floating barrage. First study on a standard section 50 m long illustrated by satellite imagery in Martinique

Innovative Spectral Characterisation of Beached Pelagic Sargassum Towards Remote Estimation of Biochemical and Phenotypic Properties

Comprehensive Analysis of Biomass, Nutrient, and Heavy Metal Contributions of Pelagic Sargassum Species (Phaeophyceae) Inundations in South Florida

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