Seaweed debris is susceptible to being buried in sediments due to natural environmental changes and human activities. So far, the effect of buried seaweeds on the environment and its decomposition mechanism remains unclear. This study simulated the decomposition of seaweed Gracilariopsis lemaneiformis for 180 days with different burial depths (0 cm and 10 cm) and burial weights (10 g and 20 g). Our findings revealed that compared with Gracilariopsis decomposition on the sediment surface, the seaweed buried in sediment slowed down the release of N, P, and dissolved organic carbon (DOC) by enhancing the activity of diverse anaerobic microbes (i.e. Draconibacterium, Desulfuromusa, Sediminispirochaeta), which were associated with organic matter decomposition. The enhanced burial quantity of Gracilariopsis resulted in a 3.28 % increase in sediment OC and enriched the humification degree of DOC in seawater. These results highlight the role of seaweed burial in enhancing OC sequestration in marine environments.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.marpolbul.2024.116963 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High-resolution isotope dietary analysis of Mesolithic and Neolithic humans from Franchthi Cave, Greece.
PLoS One
January 2025
Department of Archaeology, Simon Fraser University, Burnaby, B.C., Canada.
Franchthi Cave, in the Greek Peloponnese, is a well-known Paleolithic, Mesolithic and Neolithic site, with several human burials. In many parts of Europe there is clear evidence from archaeological and isotopic studies for a diet change between the Mesolithic and Neolithic periods. This is especially the case in coastal contexts where there is often a shift from predominantly marine food diets in the Mesolithic to terrestrial (presumably domesticated) foods in the Neolithic.
View Article and Find Full Text PDFInnovative fabrication of eco-friendly bio-based foam from sugarcane bagasse and sodium alginate with enhanced properties and sustainable applications for plastic replacement.
Int J Biol Macromol
December 2024
College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China. Electronic address:
Foam materials possess notable features, including low density, high porosity, low thermal conductivity, and high impact resistance, making them extensively used in various sectors such as construction, transportation, water treatment, and packaging. However, the majority of commercial foam materials are derived from synthetic polymers based on fossil fuels, which raises concerns regarding health and ecology. In this work, we present a straightforward and scalable approach (physical cross-linking and common pressure drying) for fabricating a bio-based foam material using pulp fibers sourced from discarded sugarcane bagasse and sodium alginate extracted from seaweed.
View Article and Find Full Text PDFSeaweed burial mitigated the release of organic carbon and nutrients by regulating microbial activity.
Mar Pollut Bull
November 2024
Institute of Hydrobiology, Key Laboratory of Philosophy and Social Science in Guangdong Province, Jinan University/Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangzhou 510632, China,. Electronic address:
Seaweed debris is susceptible to being buried in sediments due to natural environmental changes and human activities. So far, the effect of buried seaweeds on the environment and its decomposition mechanism remains unclear. This study simulated the decomposition of seaweed Gracilariopsis lemaneiformis for 180 days with different burial depths (0 cm and 10 cm) and burial weights (10 g and 20 g).
View Article and Find Full Text PDFRole of macroalgal forests within Mediterranean shallow bays in blue carbon storage.
Sci Total Environ
July 2024
Centre d'Estudis Avançats de Blanes, Consejo Superior de Investigaciones Científicas (CEAB-CSIC), Blanes, Spain. Electronic address:
Although seaweeds rank among the most productive vegetated habitats globally, their inclusion within Blue Carbon frameworks is at its onset, partially because they usually grow in rocky substrates and their organic carbon (C) is mostly exported and stored beyond their habitat and thus, demonstrating its long-term storage is challenging. Here, we studied the sedimentary C storage in macroalgal forests dominated by Gongolaria barbata and in adjacent seagrass Cymodocea nodosa mixed with Caulerpa prolifera algae meadows, and bare sand habitats in Mediterranean shallow coastal embayments. We characterized the biogeochemistry of top 30 cm sedimentary deposits, including sediment grain-size, organic matter and C contents, C burial rates and the provenance of sedimentary C throughout stable carbon isotopes (δC) and pyrolysis analyses.
View Article and Find Full Text PDFOverwintering and summer survival of Ulva prolifera in sediments: Indoor simulation of temperature impacts.
Mar Pollut Bull
April 2024
College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, China; Engineering Research Center for Water Environment Ecology in Shanghai, Shanghai 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China. Electronic address:
Green tides, a globally prevalent marine ecological anomaly observed in coastal regions, have received substantial attention. However, there is limited research on the burial of Ulva prolifera in sediments during the late stages of green tide outbreaks. This study investigates the effect of temperature on U.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!