To study the community of mollusks associated to Thalassia testudinum, monthly samplings were made between January and December 2002 in four localities of the Bay of Mochima. A PVC corer, of 14.8 cm of diameter, was used for sampling; eight monthly replicates were taken in each locality. Each core was sifted in a sieve of 1mm of mesh opening, the mollusks were fixed in 8% formaldehide solution in sea water. 473 mollusks were analyzed and 40 species, belonging to 29 families, were identified. Mangle Quemao displayed the greater abundance, whereas Varadero the minor. Shannon-Weaver diversity average ranged between 2.02+/-0.43 bits.ind(-1) (Mangle Quemao) and 1.42+/-0.95 bits.ind(-1) (Toporo). ANOVA analysis showed significant differences in abundances of mollusks among localities.
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Front Plant Sci
December 2024
Laboratório de Ecologia de Sedimentos, Instituto de Biologia, Departamento de Biologia Marinha, Universidade Federal Fluminense, Niterói, Brazil.
Submerged or partially floating seagrasses in marine or brackish waters form productive seagrass beds, feeding grounds for a rich and varied associated biota, play key ecological roles in mitigating climate change and provide ecosystem services for humanity. The objective of this study was to perform a temporal quali- and quantitative analysis on the scientific production on seagrasses in the Atlantic Ocean during last 64 years (1960 to 2024) through defined workflow by scientometric analysis on Scopus database. Publications in this database date back to 1969, comprising a total of 3.
View Article and Find Full Text PDFMar Pollut Bull
December 2024
School of GeoSciences, University of Edinburgh, Edinburgh, UK.
Seagrass meadows in oceanic coral atoll settings play key roles in sediment stabilisation and biodiversity enhancement. However, seagrass is susceptible to anthropogenic disturbance including nutrient input. Here, we experimentally enriched Thalassia hemprichii meadows with N-based fertiliser in two similar reef-top settings with different recent histories of disturbance, in Laamu atoll, Maldives.
View Article and Find Full Text PDFSci Rep
November 2024
Université des Antilles, Équipe Biologie de la Mangrove, Institut de Systématique, Évolution, Biodiversité, ISYEB, UMR 7205, UFR SEN, 97100, Pointe-à-Pitre, France.
Since 2011, holopelagic Sargassum have been massively stranding in the coastal environments of the Caribbean Islands inducing damages to coastal ecosystems, public health and the economy. To limit the risks associated with Sargassum stranding, floating barriers with nets can be placed in front of sensitive areas, to divert Sargassum away from the coast. To evaluate the potential transfer of metallic trace element (MTE) from Sargassum to adjacent marine life, seagrasses (Halophila stipulacea, Thalassia testidinum) and urchin (Lytechinus variegatus) were sampled, both close (0 m) and far (200 m) from barriers installed during 4 years in two bays: Baie Cayol (BC) and Cap Est (CE) in Martinique (FWI).
View Article and Find Full Text PDFWater Environ Res
October 2024
National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Department of Environmental Science and Engineering, Fudan University, Shanghai, China.
Submerged macrophytes can overgrow and negatively affect freshwater ecosystems. This study aimed to investigate the use of chlormequat (CQ) to regulate submerged Vallisneria natans growth as well as its impact on the microbial community of epiphytic biofilms. V.
View Article and Find Full Text PDFToxics
August 2024
Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha P.O. Box 2713, Qatar.
Qatar and other Gulf States have a diverse range of marine vegetation that is adapted to the stressful environmental conditions of seawater. The industrial wastewater produced by oil and gas activities adds further detrimental conditions for marine aquatic photosynthetic organisms on the Qatari coastlines. Thus, these organisms experience severe stress from both seawater and industrial wastewater.
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