Search

Your search keyword '"Dorneles, Paulo R."' showing total 26 results
Start Over Author "Dorneles, Paulo R."
26 results on '"Dorneles, Paulo R."'

3. Total tin (TSn) biomagnification: Evaluating organotin trophic flow and dispersion using hepatic TSn concentrations and stable isotope (C, N) data of nektonic organisms from Brazil

Author

Dorneles, Paulo R., Schilithz, Priscila F., Paiva, Thais de C., Flach, Leonardo, Barbosa, Lupércio A., Domit, Camila, Cremer, Marta J., Azevedo-Silva, Claudio E., Azevedo, Alexandre F., Malm, Olaf, Lepoint, Gilles, Bisi, Tatiana L., Das, Krishna, and Lailson-Brito, José

Published
2020
Full Text
View/download PDF

4. Use of multielement stable isotope ratios to investigate ontogenetic movements of Micropogonias furnieri in a tropical Brazilian estuary

Author

Pizzochero, Ana Carolina, Michel, Loic N., Chenery, Simon R., McCarthy, Ian D., Vianna, Marcelo, Malm, Olaf, Lepoint, Gilles, Das, Krishna, and Dorneles, Paulo R.

Subjects
Fishes -- Behavior, Isotopes -- Environmental aspects, Estuaries -- Investigations -- Environmental aspects, Earth sciences
Abstract

The whitemouth croaker, Micropogonias furnieri, is a long-lived fish of high commercial importance in the western Atlantic Ocean. Here, we used stable isotope ratios of carbon, sulfur, and nitrogen and isotopic niche metrics (SIBER) to study feeding habits and track habitat use by whitemouth croakers in Guanabara Bay, an estuary in Rio de Janeiro state, Brazil. Our results highlighted size-related habitat segregation, with small juvenile fishes (60 cm) feeding mainly in Continental Shelf waters. Medium adult fishes (30-60 cm) appear to feed in multiple coastal and Continental Shelf habitats. Moreover, their feeding ecology showed strong temporal differences, linked with seasonal and, to a lesser extent, interannual variation in oceanographic features of the ecosystem in which they live. Overall, these differences in ecological features suggest that (1) adult and juvenile whitemouth croakers should be treated as different components of the food web and (2) the conservation of these habitats should be prioritized to better manage and sustain the coastal fisheries in Guanabara Bay. Le tambour raye, Micropogonias furnieri, est un poisson longevif de grande importance commerciale dans l'ocean Atlantique occidental. Nous avons utilise les rapports d'isotopes stables du carbone, du soufre et de l'azote et des parametres associes a la niche isotopique (SIBER) pour etudier les habitudes d'alimentation et suivre l'utilisation de l'habitat de tambours rayes dans la baie de Guanabara, un estuaire dans l'Etat de Rio de Janeiro (Bresil). Nos resultats font ressortir une segregation de l'habitat associee a la taille, les petits poissons juveniles (60 cm) s'alimentent principalement dans les eaux du plateau continental. Les poissons adultes de taille moyenne (30-60 cm) semblent s'alimenter dans divers habitats littoraux et du plateau continental. L'ecologie de leur alimentation montre en outre de fortes variations temporelles associees a des variations saisonnieres et, dans une moindre mesure, interannuelles de caracteristiques oceanographiques de l'ecosysteme dans lequel ils vivent. Dans l'ensemble, ces variations des caracteristiques ecologiques indiqueraient que (1) les tambours rayes adultes et juveniles devraient etre traites comme representant differentes composantes du reseau trophique et (2) la priorite devrait etre accordee a la conservation de ces habitats pour une meilleure gestion a long terme des peches cotieres dans la baie de Guanabara. [Traduit par la Redaction], Introduction The Sciaenidae, popularly known as croakers or drums due to the sound they produce using muscles associated with the swim bladder, are a widely distributed fish family throughout the [...]

Published
2018
Full Text
View/download PDF

9. Fluoroquinolones and trace elements in poultry litter: estimation of environmental load based on nitrogen requirement for crops

Author

Parente, Cláudio E. T., primary, Brusdzenski, Gabriel S., additional, Zonta, Everaldo, additional, Lino, Adan S., additional, Azevedo-Silva, Claudio E., additional, Dorneles, Paulo R., additional, Azeredo, Antonio, additional, Torres, João Paulo M., additional, Meire, Rodrigo O., additional, and Malm, Olaf, additional

Published
2020
Full Text
View/download PDF

10. Occurrence of legacy and emerging organic pollutants in whitemouth croakers from Southeastern Brazil

Author

Pizzochero, Ana Carolina, primary, de la Torre, Adrián, additional, Sanz, Paloma, additional, Navarro, Irene, additional, Michel, Loïc N., additional, Lepoint, Gilles, additional, Das, Krishna, additional, Schnitzler, Joseph G., additional, Chenery, Simon R., additional, McCarthy, Ian D., additional, Malm, Olaf, additional, Dorneles, Paulo R., additional, and Martínez, María Ángeles, additional

Published
2019
Full Text
View/download PDF

16. Dolphins as indicators of micropollutant trophic flow in amazon basin

Author

Jr., José Lailson-Brito, Dorneles, Paulo R., Silva, Vera M. F. da, Martin, Anthony R., Bastos, Wanderley R., Azevedo-Silva, Claudio E., Azevedo, Alexandre F., Torres, Joao P. M., Malm, Olaf, Jr., José Lailson-Brito, Dorneles, Paulo R., Silva, Vera M. F. da, Martin, Anthony R., Bastos, Wanderley R., Azevedo-Silva, Claudio E., Azevedo, Alexandre F., Torres, Joao P. M., and Malm, Olaf

Abstract

This study presents an overview of the appropriateness of the use of Amazonian cetaceans as sentinel species for environmental contamination by micropollutants, such as organochlorines and mercury. Due to the top position in food webs occupied by cetaceans and to their long life-span, high micropollutant concentrations have been verifi ed in their tissues, what allows an amplifi cation of the determination capacity by different analytical procedures. Besides providing an analytical advantage, the continuous micropollutant determination in cetaceans has been useful: as a reference of pollutant availability to other organisms; to integrate a complex signal of pollution; to quantify the ecological signifi cance of a contamination. Therefore, published information on the concentrations of the quoted pollutants in the Amazonian cetaceans Inia geoffrensis (boto) and Sotalia fl uviatilis (tucuxi) were gathered herewith. Carrying out comparison with data from Brazilian coastal cetaceans, it became clear how high the levels observed in Amazonian aquatic mammals are. In this context, mercury deserves to be highlighted. Despite the little volume of information on the concentrations of mercury, polychlorinated biphenyls and dichlorodiphenyltrichloroethane in Amazonian cetaceans, the existing information already demonstrates that the levels observed mirror the environmental contamination by such pollutants in distinct Amazonian environments. Perspectives for future investigations are also discussed, including possible ways of overcoming obstacles related to sampling of Amazonian cetaceans. Keywords: Brazil, Amazon, cetacean, mercury, organochlorines.

Published
2008

17. High accumulation of PCDD, PCDF, and PCB congeners in marine mammals from Brazil: A serious PCB problem

Author

Dorneles, Paulo R., primary, Sanz, Paloma, additional, Eppe, Gauthier, additional, Azevedo, Alexandre F., additional, Bertozzi, Carolina P., additional, Martínez, María A., additional, Secchi, Eduardo R., additional, Barbosa, Lupércio A., additional, Cremer, Marta, additional, Alonso, Mariana B., additional, Torres, João P.M., additional, Lailson-Brito, José, additional, Malm, Olaf, additional, Eljarrat, Ethel, additional, Barceló, Damià, additional, and Das, Krishna, additional

Published
2013
Full Text
View/download PDF

18. Natural and anthropogenically-produced brominated compounds in endemic dolphins from Western South Atlantic: Another risk to a vulnerable species

Author

Alonso, Mariana B., primary, Eljarrat, Ethel, additional, Gorga, Marina, additional, Secchi, Eduardo R., additional, Bassoi, Manuela, additional, Barbosa, Lupércio, additional, Bertozzi, Carolina P., additional, Marigo, Juliana, additional, Cremer, Marta, additional, Domit, Camila, additional, Azevedo, Alexandre F., additional, Dorneles, Paulo R., additional, Torres, João Paulo M., additional, Lailson-Brito, José, additional, Malm, Olaf, additional, and Barceló, Damià, additional

Published
2012
Full Text
View/download PDF

19. Pyrethroids: A new threat to marine mammals?

Author

Alonso, Mariana B., primary, Feo, Maria Luisa, additional, Corcellas, Cayo, additional, Vidal, Lara G., additional, Bertozzi, Carolina P., additional, Marigo, Juliana, additional, Secchi, Eduardo R., additional, Bassoi, Manuela, additional, Azevedo, Alexandre F., additional, Dorneles, Paulo R., additional, Torres, João Paulo M., additional, Lailson-Brito, José, additional, Malm, Olaf, additional, Eljarrat, Ethel, additional, and Barceló, Damià, additional

Published
2012
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results