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Brazil has a megadiversity that includes marine species that are distributed along 800 km of shoreline. This biodiversity status holds promising biotechnological potential. Marine organisms are important sources of novel chemical species, with applications in the pharmaceutical, cosmetic, chemical, and nutraceutical fields. However, ecological pressures derived from anthropogenic actions, including the bioaccumulation of potentially toxic elements and microplastics, impact promising species. This review describes the current status of the biotechnological and environmental aspects of seaweeds and corals from the Brazilian coast, including publications from the last 5 years (from January 2018 to December 2022). The search was conducted in the main public databases (PubChem, PubMed, Science Direct, and Google Scholar) and in the Espacenet database (European Patent Office-EPO) and the Brazilian National Property Institute (INPI). Bioprospecting studies were reported for seventy-one seaweed species and fifteen corals, but few targeted the isolation of compounds. The antioxidant potential was the most investigated biological activity. Despite being potential sources of macro- and microelements, there is a literature gap regarding the presence of potentially toxic elements and other emergent contaminants, such as microplastics, in seaweeds and corals from the Brazilian coast.
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http://dx.doi.org/10.3390/molecules28114285 | DOI Listing |
PeerJ
September 2025
School of Life Sciences, University of Hawai'i at Mānoa, Honolulu, HI, United States of America.
Efficient detection and management of non-indigenous species are critical for mitigating their ecological impacts. Environmental DNA (eDNA) techniques have transformed biodiversity monitoring by enabling sensitive and cost-effective surveys. This study compares the efficacy of passive eDNA samplers (PEDS) to conventional active filtration methods for detecting the cryptogenic macroalga within the Papahānaumokuākea Marine National Monument, Hawai'i, USA.
View Article and Find Full Text PDFHarmful Algae
September 2025
Bermuda Institute of Ocean Sciences, a unit of the Julie Ann Wrigley Global Futures Laboratory at Arizona State University, St. George's, Bermuda.
Pelagic Sargassum, denoting the two species S. natans and S. fluitans, has become a focal point of both scientific and public interest due to recent superbloom events.
View Article and Find Full Text PDFMar Environ Res
August 2025
UWA Oceans Institute and School of Biological Sciences, University of Western Australia, Crawley, Western Australia, 6009, Australia; Institute of Marine Research, Flødevigen Research Station, His, 4817, Norway.
Calcifying organisms support key geo-ecological functions in shallow tropical and temperate reefs worldwide, including creating habitat structure, producing sediments, and supporting reef accretion. These functions depend on the carbonate budget: the balance between calcium carbonate production and erosion. While carbonate budgets are well characterized in tropical coral reefs, the carbonate budgets of temperate rocky reefs, and their variability across spatiotemporal scales, remain much less well understood.
View Article and Find Full Text PDFEnviron Microbiol
August 2025
PSL Université Paris: EPHE-UPVD-CNRS, UAR 3278 CRIOBE, Université de Perpignan, Perpignan, France.
Macroalgal proliferation constitutes a major threat to coral reef resilience. Macroalgae can affect corals by altering their microbiome and metabolome. However, our understanding of the spatial scale of these effects and the influence of environmental factors is limited.
View Article and Find Full Text PDFEcol Appl
July 2025
Department of Humanities and Social Sciences, University of Sassari, Sassari, Sardinia, Italy.
Ecological disturbance regimes are shifting and leaving behind novel legacies, like the remnant structures of dead foundation species, which have poorly known impacts on ecosystem resilience. We explored how dead coral skeletons produced by marine heatwaves-material legacies of increasingly common disturbances on coral reefs-influence spatial competition between corals and macroalgae, focusing on whether removing dead branching skeletons stimulates recovery of coral after disturbance. Following a marine heatwave, we removed dead skeletons from reef patches and then used underwater photogrammetry and AI-powered image analysis to quantify trajectories of coral and macroalgae.
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