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Article
Multidisciplinary Sciences
Kristie S. T. Alleyne et al.
Summary: The recent proliferation of pelagic Sargassum spp. in the Tropical Atlantic has caused significant ecological and socioeconomic impacts in the wider Caribbean region. The source of the Sargassum has been traced to a new bloom region called the North Equatorial Recirculation Region (NERR) located between the South Equatorial Current and the North Equatorial Counter Current. The study investigates the species and morphotype composition of Sargassum strandings in Barbados and identifies two distinct easterly sub-origins and/or transport pathways that contribute to the seasonal variation in morphotype abundance.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Damien A. Devault et al.
Summary: The study reveals that Sargassum sp. is heavily contaminated by chlordecone after 2 hours of exposure, while arsenic transudation is intense and continuous. The results suggest that arsenic contamination in Sargassum sp. is uniform before decay, but decay may lead to rapid contamination of the coastal environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Ecology
Andrew S. Maurer et al.
Summary: Global environmental change has led to an increase in macroalgae blooms, impacting sea turtle nesting ecology and potentially altering the thermal environment for incubating eggs. Research shows that the effects of Sargassum on below-ground temperatures are season-dependent, with a cooling effect in summer and warming effect in autumn. These thermal changes can have significant impacts on sea turtle embryo development and sex ratios, highlighting the need for monitoring and potential management strategies for Atlantic nesting beaches.
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
(2022)
Article
Environmental Sciences
Paulina Annette Ortega-Flores et al.
Summary: Since 2014, the Mexican Caribbean beaches have been heavily affected by massive influxes of brown seaweed Sargassum, leading to serious ecological and economic consequences. This study found significant differences in concentrations of trace elements in different species and seasons, with season, copper, iron, uronic acids, and sulfate being the main variables associated with arsenic accumulation in Sargassum.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Lei Wang et al.
Summary: The study aimed to reduce the arsenic (As) content in Sargassum fusiforme through sequential processing involving hot water, citric acid, and fermentation. Optimal processing conditions were determined as treatment with hot water at 60 degrees C for 120 min followed by treatment with 0.4% citric acid. Further reduction in As content was achieved by fermenting the processed S. fusiforme with Lactobacillus rhamnosus. The fermentation also significantly altered the levels of organic acids and amino acids in S. fusiforme.
Article
Environmental Sciences
Damien A. Devault et al.
Summary: Massive Sargassum beachings have occurred on Caribbean shores since 2011. This study reports the concentration levels of heavy metals, including arsenic, and chlordecone in Martinique and Guadeloupe. It reveals that Sargassum can accumulate high concentrations of chlordecone and raises questions about the bioaccumulation, transport, and dissemination of inorganic and organic pollutants in relation to algae bleaching.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Rosmery Sosa-Gutierrez et al.
Summary: This study specifically investigates the response of Sargassum aggregations to high wind events, particularly tropical cyclones. The results show a significant decrease in Sargassum coverage under tropical cyclone trajectories, indicating their role in the seasonal decay of Sargassum biomass. The sinking of Sargassum towards the deep ocean is associated with this decrease.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Oceanne-Amaya Cipolloni et al.
Summary: Since 2011, the Caribbean Islands have experienced massive stranding of Sargassum, a pelagic brown algal species, causing damage to coastal ecosystems and economy. Research has shown that Sargassum can transport contaminants from offshore to the coast by accumulating heavy metals. A study conducted in the Atlantic Ocean in 2019 analyzed the concentrations of 15 heavy metal(loid)s elements in three genotypes of Sargassum. The results revealed different contamination patterns among the genotypes.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Wokil Bam et al.
Summary: Unusual and unprecedented pelagic Sargassum blooms in the North Atlantic and the Caribbean Sea have negative effects on coastal ecosystems and oceans. The Sargassum can scavenge trace elements and radionuclides from seawater, posing a potential threat to higher trophic organisms, including humans. This study measures trace elements and radionuclides in Sargassum collected from coastal waters in the Caribbean Sea to determine baseline concentrations and assess scavenging potential. The results show elevated levels of trace elements and radionuclides in the Sargassum, surpassing previous reported values.
MARINE POLLUTION BULLETIN
(2022)
Article
Oceanography
Nikolaos Skliris et al.
Summary: The study reveals that the growth and drift of sargassum seaweed blooms in the tropical North Atlantic are influenced by patterns and seasonality of winds and currents. In years of large sargassum blooms, the Intertropical Convergence Zone shifts southward, contributing to sargassum growth. Additionally, secondary winter blooms were observed in the northern part of the region, likely due to wind-driven equatorial upwelling and strong nutrient transport.
Article
Geosciences, Multidisciplinary
Nathan F. Putman et al.
Summary: Blooms and coastal inundations of pelagic Sargassum have caused major problems to coastal communities and ecosystems throughout the tropical Atlantic over the past decade. Understanding Sargassum growth, movement, and mortality is essential to being able to predict and mitigate these events.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Nanoscience & Nanotechnology
F. J. Beron-Vera et al.
Summary: By analyzing data from ocean drifters, this study reveals the similarity between the distribution of probability density and the observed high concentration belt of Sargassum in the tropical Atlantic. It also identifies a northwest basin in the Gulf of Mexico that attracts Sargassum, which is weakly connected to the Sargasso Sea but includes nutrient-rich regions and an upwelling system off the coast of West Africa. Transition Path Theory is then applied to infer potential pathways for Sargassum invasion, showing two possible routes from the African coast into the Intra-Americas Seas.
Article
Toxicology
Dabor Resiere et al.
Summary: The study revealed that exposure to toxic gases released from decomposing sargassum seaweed can cause neurological, digestive, and respiratory disorders. Patients living in massive stranding areas may be exposed to hydrogen sulfide levels exceeding 5 ppm for up to 50 days per year.
CLINICAL TOXICOLOGY
(2021)
Article
Engineering, Marine
Liliana Alzate-Gaviria et al.
Summary: This study is the first to report lignified cells forming the secondary cell wall in Sargassum species. Histological techniques were used to identify lignin-like tissues and provide insights into the unique cell wall architecture of these seaweeds. The study identified the presence, absence, and distribution of lignin and cellulose in conductive tissue of Sargassum spp. using dyes such as Safranin O and Toluidine.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Environmental Sciences
Erika Vazquez-Delfin et al.
Summary: The study focused on the phenomenon of Sargassum influx on the north coast of the Mexican Caribbean, including its abundance, species composition, and chemical content. The research found that pelagic Sargassum was the main component, with its spatial distribution influenced by local environmental conditions. Significant spatial variation in the abundance of stranded biomass was observed at different locations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Multidisciplinary Sciences
B. E. Lapointe et al.
Summary: Research shows that since the 1980s, the nitrogen content of Sargassum spp. has increased, while the phosphorus content has decreased, leading to an increase in the N:P ratio, reflecting global anthropogenic nitrogen enrichment causing algal blooms in the wider Atlantic basin.
NATURE COMMUNICATIONS
(2021)
Article
Energy & Fuels
John James Milledge et al.
Article
Multidisciplinary Sciences
Rosa E. Rodriguez-Martinez et al.
Review
Environmental Sciences
Sara Saldarriaga-Hernandez et al.
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Valeria Chavez et al.
Article
Multidisciplinary Sciences
Mengqiu Wang et al.
Review
Environmental Sciences
Candace A. Oviatt et al.
MARINE POLLUTION BULLETIN
(2019)
Article
Environmental Sciences
R. E. Rodriguez-Martinez et al.
MARINE POLLUTION BULLETIN
(2019)
Article
Horticulture
Jen A. Sembera et al.
Letter
Medicine, General & Internal
Dabor Resiere et al.
Article
Environmental Sciences
Brigitta I. van Tussenbroek et al.
MARINE POLLUTION BULLETIN
(2017)
Article
Oceanography
Oliver Wurl et al.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2015)
Article
Ecology
Andrew S Maurer et al.
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT
(2015)
Article
Engineering, Environmental
Sefaur Rahaman et al.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2013)
