Tag: Marine and coastal ecosystems
Sea urchin eggs contain plastid-derived components linked to development
What the study found Sea urchin eggs were found to contain plastid-derived material, including chromoplast-derived carotenoid crystals and chromoplast-specific metabolites in Arbacia lixula. The authors also report plastid DNA in the eggs of 11 other sea urchins, with diatoms appearing to be the main source. Why the authors say this matters The study suggests that…
HYBRID improved tidal and stratification simulation in the Yellow Sea
What the study found The hybrid z*-isopycnal vertical coordinate system (HYBRID) performed better than the z* coordinate system (ZSTAR) in simulations of Yellow Sea tides and stratification. It gave a more accurate picture of sea surface temperature, vertical thermal structure, and several tidal measures, especially in summer when the water column is strongly stratified. Why…
Grazing risk can induce toxins as strongly as nitrogen enrichment
—
in EcologyMeta-analysis of 113 experimental contrasts demonstrating that grazing risk rivals nutrient enrichment in driving phycotoxin production in Alexandrium and Pseudo-nitzschia harmful algae.
Metal contamination varied across Tenerife coastal sites
Study of eight metal concentrations in eight intertidal invertebrate species across three coastal sites in Tenerife reveals spatial contamination patterns and species-specific bioaccumulation.
Polar ostracod mitogenomes show shared gene arrangement
—
in ZoologyMitochondrial genome organization of deep-sea pelagic ostracods from polar regions provides insights into genomic architecture and foundation for comparative biogeography studies.
Parasite kills Alexandrium minutum and lowers toxin levels across salinities
—
in EcologyParvilucifera infectans parasitizes Alexandrium minutum across salinities, reducing harmful algal bloom toxins through metabolomic remodeling of osmolytes and toxin synthesis pathways.
Sampling methods captured large-cell eukaryotes but had limits for picocyanobacteria
—
in EcologyEvaluation of sampling protocols for picocyanobacteria and cyanophages in estuarine environments, addressing size fractionation limitations and filtration optimization.
Phosphate shortage limits bacterial fucoidan breakdown
—
in MicrobiologyPhosphate deprivation inhibits bacterial degradation of fucoidan, a marine polysaccharide, potentially enhancing carbon sequestration in oceanic systems and extending dissolved organic matter.
Fronts may host a distinct phytoplankton community
—
in OceanographyStatistical framework combining finite mixtures, EM and hierarchical Bayesian inference reveals a distinct phytoplankton community comprising ~70% of observations within a Mediterranean oceanic front.
