Publications by authors named "Nara L Oliveira"
Recently, we published a novel method used to assess the trophic niches of different coral species and demonstrated that their nutrition varied considerably, with some species highly dependent on their photosynthetic algal symbionts and others able to feed on plankton to meet energetic requirements. Adjustments to the use of this tool are necessary when it is applied to other scientific questions and symbiotic organisms. We respond to a comment highlighting a risk of bias in the methods, discuss suggested adjustments, and propose further refinements to improve method robustness.
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- Ocean warming leads to coral bleaching, which affects the nutrition corals receive from their algal partners, creating a risk of widespread coral mortality.
- The study used Bayesian analysis of isotopic data to explore the relationship between corals and their symbionts, focusing on their roles in the ecosystem.
- Findings suggest that as ocean temperatures rise, corals that rely mainly on autotrophy face greater challenges, making them more vulnerable to disappearing from coral reefs compared to other types of corals.
Article Synopsis
- Large rivers, like the Amazon, significantly disrupt reef distributions on tropical shelves by affecting salinity, pH, light penetration, and sedimentation over a large area of the North Atlantic.
- Despite these harsh conditions, a complex carbonate system thrives off the Amazon's mouth, characterized by unique hard-bottom structures, originating from sedimentation during low sea levels and continuing in certain areas.
- These carbonate structures support diverse marine life, including sponges and filter feeders, and act as a connectivity corridor for reef-associated species, offering insights into how tropical reefs can adapt to challenging conditions, which are becoming more common globally.
The Abrolhos Bank (eastern Brazil) encompasses the largest and richest coral reefs of the South Atlantic. Coral reef benthic assemblages of the region were monitored from 2003 to 2008. Two habitats (pinnacles' tops and walls) were sampled per site with 3-10 sites sampled within different reef areas.
View Article and Find Full Text PDFBackground: Neonatal cholestasis syndrome with an intra or extrahepatic origin has been associated to viral infections. The participation of the cytomegalovirus in the etiopathogenesis of neonatal hepatitis has been already known for some time, but only recently there have been indications that this virus may be one of the possible etiological factors for extrahepatic biliary atresia.
Aims: To assess the prevalence of infection by cytomegalovirus in patients with intrahepatic cholestasis and extrahepatic cholestasis.