Magali Porrachia
Scripps Institution of Oceanography
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Publication
Featured researches published by Magali Porrachia.
The Biological Bulletin | 2007
Dimitri D. Deheyn; Kaoru Kubokawa; James K. McCarthy; Akio Murakami; Magali Porrachia; Greg W. Rouse; Nicholas D. Holland
remains to be learned about the taxonomic distribution and biological function of these proteins in nature. To date, GFPs have been found in only two major groups in the metazoan tree: specifically, in a number of cnidarians, rel atively near the base of the tree, and in a few copepod crustaceans, relatively derived within the protostome branch (2, 3). The cnidarian GFPs are often associated with biolu minescence, but those found so far in copepods are not. We now report that the limited taxonomic distribution of ani mals with endogenous GFPs may be partially due to inad equate sampling efforts, because we have found such mol ecules in the cephalochordate amphioxus. About 10 years
Chemistry and Ecology | 2009
Carlos Neira; Francisco Delgadillo-Hinojosa; Alberto Zirino; Guillermo F. Mendoza; Lisa A. Levin; Magali Porrachia; Dimitri D. Deheyn
The overall effect of the number of boats on the copper (Cu) levels in the water column and sediment, along with their spatial variability within Shelter Island Yacht Basin (SIYB), San Diego Bay, California was examined. We identified a horizontal gradient of increasing dissolved Cu and Cu in sediment from outside to the head of SIYB which was coincident with the increasing number of boats. Spatial models of Cu distribution in water and sediment indicated the presence of ‘hotspots’ of Cu concentration. From outside to the head of SIYB, dissolved Cu ranged from 1.3 μ g L−1 to 14.6 μ g L−1 in surface water, and 2.0 μ g L−1 to 10.2 μ g L−1 in bottom water. Cu in sediment exceeded the Effect Range Low of 34 mg kg−1 (i.e. where adverse effects to fauna may occur), with a peak concentration of 442 mg kg−1 at the head of the basin. Free Cu++ in surface water was several orders of magnitude higher than in sediment porewater. High-resolution data of Cu species together with probability maps presented in this paper will allow managers to easily visualise and localise areas of impaired quality and to prioritise which areas should be targeted to improve Cu-related conditions.
AMBIO: A Journal of the Human Environment | 2011
Kissao Gnandi; Seunghee Han; M. Hassan Rezaie-Boroon; Magali Porrachia; Dimitri D. Deheyn
Surface sediments of the lagoons of Lomé, Togo, were analyzed for mercury, methylmercury, and trace elements. Concentrations were greater than typical for natural lagoon sediments, and with greater variability within the Eastern lagoon compared to the Western one. The Eastern lagoon is larger and has been dredged in the past, while the Western lagoon, which also receives major waste inputs, has not been dredged and shows less tidal flushing. Accordingly, one naturally believes that the Eastern lagoon is cleaner and probably safe to use due to its natural resources, including fishes to eat. Unexpectedly, we describe here that mercury methylation was greater in the Eastern lagoon, indicating increased bioavailability of mercury, as probably facilitated by past dredging that decreased solid-phase retention of inorganic mercury. Urbanization has historically been more developed in the southern part of the lagoons, which is still reflected in contamination levels of sediment despite dredging, probably because sources of contamination are still more important there today. Such urban contamination emphasizes the need to regulate waste discharges and possible airborne contamination in growing cities of developing countries, and implements environmental and public health monitoring, especially in relation to misbelieves systematically associated with the cleansing effect of dredging activity.
Clinical Infectious Diseases | 2018
Davey M. Smith; Christina Huynh; Adam J Moore; Andrew Frick; Christy M. Anderson; Magali Porrachia; Brianna Scott; Sarah Stous; Robert Schooley; Susan J. Little; AsherLev T Santos
A high seroprevalence of hepatitis A virus (81%) among human immunodeficiency virus-negative high-risk men who have sex with men is likely why this community was largely spared from a recent hepatitis A virus outbreak in San Diego, California.
Marine Pollution Bulletin | 2011
Carlos Neira; Guillermo F. Mendoza; Lisa A. Levin; Alberto Zirino; Francisco Delgadillo-Hinojosa; Magali Porrachia; Dimitri D. Deheyn
Journal of Environmental Monitoring | 2011
Kissao Gnandi; Benjamin A. Musa Bandowe; Dimitri D. Deheyn; Magali Porrachia; Michael Kersten; Wolfgang Wilcke
Marine Chemistry | 2015
Joris M. Gieskes; Seunghee Han; Anthony E. Rathburn; Guy Rothwell; M. Elena Pérez; Magali Porrachia; Andrea Barbanti; Dimitri D. Deheyn
Marine Pollution Bulletin | 2015
Carlos Neira; Guillermo F. Mendoza; Magali Porrachia; Chris Stransky; Lisa A. Levin
Water Air and Soil Pollution | 2011
Seunghee Han; Magali Porrachia; Elisa Volpato; Joris M. Gieskes; Dimitri D. Deheyn
Archive | 2018
Davey M. Smith; Christina Huynh; Adam J Moore; Andrew Frick; Christy M. Anderson; Magali Porrachia; Brianna Scott; Sarah Stous; Robert Schooley; Susan J. Little; AsherLev T Santos