Ricardo Rocha Pavan SilvaUniversity of Tasmania · Institute for Marine and Antarctic Studies (IMAS)
Ricardo Rocha Pavan Silva
MSc Animal Biology and PhD Candidate - IMAS @ UTAS
About
8
Publications
961
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
38
Citations
Citations since 2017
Introduction
Ricardo R P Silva worked with several areas related to environmental issues such as aquatic ecosystems, microalgae toxicity, genetics and climate change. MSc in Animal Biology in 2009 at the University of Brasilia (UnB), Brazil. Currently, he is a PhD student at the University of Tasmania looking at the effects of environmental changes in the microbial community composition and function in a hypoxic and stratified marine system using molecular techniques.
Additional affiliations
January 2007 - January 2009
Publications
Publications (8)
Finfish aquaculture is a fast-growing primary industry and is increasingly common in coastal ecosystems. Bacterioplankton is ubiquitous in marine environment and respond rapidly to environmental changes. Changes in bacterioplankton community are not well understood in semi-enclosed stratified embayments. This study aims to examine aquaculture effec...
Coastal aquaculture operations for feed additive species results in the release of waste into the surrounding environment, with the potential for adverse environmental change. Ubiquitous pelagic protists are sensitive to environmental changes making them potential sentinels for detecting and monitoring impacts. This study used 18S rRNA high-through...
Microbial communities are important elements in the marine environment, contributing to nutrient cycling and biogeochemical processes. Estuaries comprise environments exhibiting characteristics from freshwater to marine, leading to distinct microbial communities across this environmental gradient. Here, we examine the spatial dynamics of microbial...
Microbial communities are important elements in the marine environment, contributing to nutrient cycling and biogeochemical processes. Estuaries comprise environments exhibiting characteristics from freshwater to marine, leading to distinct microbial communities across this environmental gradient. Here, we examine the spatial dynamics of microbial...
Microbial communities in the marine environment drive biogeochemical and nutrient cycles. However, microbial composition and therefore their role in ecosystems is likely to be strongly influenced by the environment. Here, we examined Macquarie Harbour, a highly stratified system on the west coast of Tasmania, Australia, to determine environmental f...
Studies of genotoxicity in fish caused by cyanobacterial extracts containing microcystins (MCs) can be useful in determining their carcinogenic risk due to a genotoxic mechanism. An extract of cyanobacterial Microcystis ssp, containing MC-LR and -LA from a bloom collected in a eutrophic lake, showed genotoxicity to Oreochromis niloticus. DNA damage...
Studies of genotoxicity in fish caused by cyanobacterial microcystins can be useful both in determining the sensitivity of native species, as well as comparing exposure routes. The genotoxicity caused by the microcystins LR and LA from a bloom collected in a eutrophic lake, was revealed in the fish Astyanaxbimaculatus, a native species from South A...
Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Biologia Animal, 2009. A preocupação dos efeitos de cianobactérias na saúde humana cresce em muitos países. Casos de florações de cianobactérias em reservatórios e lagos criam problemas para o abastecimento de água, além de envenenamento,...
Questions
Question (1)
Hi all,
I'm trying to run an incubation experiment to verify the nitrification rate in the water column using Tedlar bags. The problem is that I need to take all the air bubbles out from each bag. The method that I'm using introduces some air (hose or peristaltic pump). Two problems arose from this: too many handling (some bags leaked); time-consuming processing.
It would be great to know if someone has another approach to avoid these major problems.
Experiment design:
a) Take water samples from 3 depths and put them into the bags (triplicate).
b) injection of NH4 isotope
c) take the first sample (nutrients, 15NO2, 15NO3) immediately after the injection
d) take the second sample after 3 hours of incubation.
Thank you in advance
Regards
