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The staff of the XAFS beamline BM30B (FAME) at ESRF, France, and more particularly Dr. D. Testemale, are gratefully acknowledged for their help in performing the XAS experiments.; International audience; Application of anaerobically digested sludges and manure (digestates) to agricultural fields reduces the need for fertilizer application, but might also pose environmental risks due to the introduction of various pollutants –including metal trace elements and pharmaceuticals– to amended soils. The simultaneous presence of different contaminants can affect plant uptake, altering the performance of phytoremediation. This work aims to investigate and compare the single and combined effects of Enrofloxacin (Enro) and Cu on their plant uptake from digestate solutions. Plant uptake experiments were carried out by exposing, for 5 days, Phragmites australis to three different concentrations of a liquid digestate doped with Cu and/or Enro. Contaminant concentrations were afterward determined in both plant tissues and digestate solutions. Contaminant speciation in solution and Cu speciation in plant roots were also assessed. Cu plant uptake (mostly in plant roots, Cu concentration varied between 55 and 254 μg·g−1) was observed, especially at low concentration of digestate. At high digestate concentration, Cu uptake decreased due to the formation of Cu-DOC complexes rendering Cu less bioavailable. The presence of the antibiotic slightly further reduced Cu plant uptake due to the formation of Cu-Enro complexes. Plant roots also accumulated Enro, an accumulation also higher for the lowest concentration of digestate (an increase of 40%), and that slightly increased in the presence of Cu (up to 226 μg·g−1). However, proportion of free Enro in solution decreased (up to 70%) in the presence of Cu due to complexation. Cu speciation in plant roots confirmed the implication of the complexation in the uptake of Cu and Enro when they are simultaneously present in solution. Thus, the presence of amendments (such as digestates) increasing the DOC content, in addition to the interactions between contaminants, should be taken into account for field crop soils as well as for phytoremediation technologies.

Made available in DSpace on 2020-12-10T19:56:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-03-01 Araucaria Foundation FCT -Foundation for Science and Technology Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Government of Principality of Asturias Otolith fingerprinting was used to test the hypotheses that estuarine systems are effective juvenile habitats for Chaetodipterus faber in the Southwest Atlantic Ocean, and that this species displays seasonal migrations between estuarine and marine environments. Adult C. faber were collected in euhaline environments from five Brazilian states (Espirito Santo, Rio de Janeiro, Sao Paulo, Parana, and Santa Catarina) and otolith elemental ratios (Sr/Ca, Ba/Ca and Mn/Ca) were recorded from the core to otolith edge. The otolith Sr/Ca pattern demonstrated that most fish (95%) spend the first year of life within estuaries, but then move toward seawater; migrations between estuarine and marine environments appear not to occur after estuarine egress. Evidence of marine residence throughout life was found in only 5% of individuals. Moreover, the general otolith Sr/Ca pattern indicated that spawning occurs mainly in coastal waters adjacent to estuaries. Additionally, otolith element/Ca ratios suggest that adult C. faber display seasonal migrations between inshore and offshore waters, which corroborate with monthly fishery C. faber landings. This finding implies that artisanal and industrial fisheries require a shared quota. The inferential scope of seasonal movements was sometimes limited by the lack of water chemistry data and unknown relative effects of environmental and physiological factors. Thus additional research is required to evaluate the connectivity between environments, a pre-requisite for effective fisheries conservation and management of C. faber. Univ Fed Parana, Programa Posgrad Sistemas Costeiros & Ocean, PO 61, BR-83255976 Pontal Do Parana, Parana, Brazil Ctr Interdisciplinar Invest Marinha & Ambiental, Terminal Cruzeiros Porto Leixoes, Ave Gen Norton de Matos S-N, P-4450208 Matosinhos, Portugal Univ Fed Parana, Ctr Estudos Mar, Lab Ecol Peixes, PO 61, BR-83255976 Pontal Do Parana, Parana, Brazil Univ Estadual Paulista, Campus Expt Registro, BR-11900000 Registro, SP, Brazil Univ Oviedo, Fac Sci, Dept Phys, Federico Garcia Lorca 18, Oviedo 33007, Spain Univ Fernando Pessoa, Fac Ciencias Saude, Rua Carlos Maia 296, P-4200150 Porto, Portugal Univ Estadual Paulista, Campus Expt Registro, BR-11900000 Registro, SP, Brazil Araucaria Foundation: Cov. 020/2015 FCT -Foundation for Science and Technology: UIDB/04423/2020 FCT -Foundation for Science and Technology: UIDP/04423/2020 Government of Principality of Asturias: IDI/2018/000186

Made available in DSpace on 2013-08-12T18:12:44Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-01-01 Made available in DSpace on 2013-09-30T17:41:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-01-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:12:36Z No. of bitstreams: 0 Made available in DSpace on 2014-05-20T13:12:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-01-01 Interviews were conducted with scientific researchers and process industries, bibliographic research and observational technical visits to collect information about the portuguese fishery sector. The relevance of this sector derives essentially from the fact that fish is a key component of food and responsible for large number of jobs within the Portuguese population. With the reduction in catches due to the decline in world's fish stocks the government has encouraged actions of ecological nature to promote the sector sustainability. Actually, the decline in the market expression facilitates the entry of stranger companies from others countries. Entrepreneurs must increase the productivity and provide quality assured products in order to achieve the export market. ESALQ, BR-13418900 Piracicaba, SP, Brazil Univ São Paulo, Ctr Energia Nucl Agr & Ambiente USP CENA, Piracicaba, SP, Brazil USP, ESALQ, Piracicaba, SP, Brazil Univ Estadual Paulista, Ctr Agr CAUNESP UNESP, Jaboticabal, SP, Brazil UP, ICBAS, Oporto, Portugal Ctr Interdisciplinar Invest Marinha & Ambiental C, Oporto, Portugal Univ Estadual Paulista, Ctr Agr CAUNESP UNESP, Jaboticabal, SP, Brazil