120 documents found, page 1 of 12
Ecological quality assessment of estuarine macrobenthic communities using an in...
Neves, Joana; Martins, Marta; Adão, Helena; Mil-Homens, Mário; Costa, Maria Helena; Lobo-Arteaga, JorgeMacrobenthic communities play a crucial role in the functioning of estuarine ecosystems and serve as bioindicators of environmental quality. This study assessed the ecological quality of an estuarine system using the AMBI and M-AMBI indices. The following parameters were considered: (i) environmental factors (total organic matter, organic carbon, grain size, calcium carbonate), (ii) sediment trace metals (Pb, Z...
Distribution patterns of benthic bacteria and nematode communities in estuarine...
Vieira, Soraia; Sroczy´nska, Kasia; Neves, Joana; Martins, Marta; Costa, Maria Helena; Adão, Helena; Vicente, Cláudia S.L.Benthic organisms are crucial in the regulation of the ecosystem functions. The interactions between benthic nematodes and sediment bacteria across divergent environmental conditions are poorly understood. The main goal of this study was to understand the spatial distribution patterns and diversity of benthic bacterial communities and nematode assemblages of the intertidal sediments in three sampling sites (Nav...
Food web attributes to assess spatial–temporal dynamics in estuarine benthic ec...
Vieira, Soraia; Maurer, Anne-France; Barrocas Dias, Cristina; Neves, Joana; Martins, Marta; Lobo-Arteaga, Jorge; Adao, Helena; Scrocynska, KasiaThreatened benthic ecosystems need urgent tools for effective bioassessment and relevant management. EU Marine Strategy Framework Directive (MSFD) obligates member states to achieve GES (Good Environmental Status) for 11 descriptors of environmental state (MSFD; 2008/56/EC). From all of the descriptors, D4 that focuses on Food Webs is the most functional-oriented indicator, but also the most challenging to impl...
Potential for trophic transfer of microplastics in the smallspotted catshark’s ...
Pica, Rodrigo; Fernandes, João; Seixas, Sónia; Martins, MartaMicroplastics (MPs) are increasingly prevalent pollutants in marine environments, raising concerns about their potential to transfer across trophic levels. However, the extent and significance of such transfer remain uncertain. This study aimed to (i) characterise MPs in the digestive tracts (GITs) of three ecologically connected species — the small-spotted catshark (Scyliorhinus canicula), pouting (Trisopterus...
Maximizar o potencial dos pneus em fim de vida : o caso da valorização da fraçã...
Martins, Marta; Gonçalves, Luís; Christensen, Michael; Ballegaard, ThomasRevista Arquitectura Lusíada. - ISSN 1647-9009. - N. especial (2025).
Bivalve gut microbiome responses to sediment characteristics and anthropogenic ...
Neves, Joana; Mil-Homens, Mário; Martins, Marta; Adão, Helena; Arteaga, JorgeEstuaries are highly dynamic ecosystems that are influenced by fluctuating environmental conditions and sediment-associated contamination. These factors can significantly affect microbiomes associated with their hosts. In this study, we investigated the gut microbiome of the bivalve Cerastoderma edule by integrating bacteria (16S rRNA) and fungal (ITS) diversity data with sediment physicochemical parameters acr...
Burnout em enfermeiros nos cuidados ao doente crítico em contexto pós pandemia ...
Martins, Marta; Veiga-Branco , Maria AugustaIntrodução: A Síndrome de Burnout, tornou-se expressiva, na pandemia de Covid-19, com consequências na vida pessoal e profissional dos enfermeiros. Objetivo: Reconhecer a perceção de comportamentos da Síndrome de Burnout, por enfermeiros em Medicina Intensiva, pós pandemia Covid-19; analisar as relações entres as variáveis sociodemográficas e profissionais e o nível da Síndrome de Burnout. Método: Estudo transv...
Study around the Barroso mine (Portugal): Baseline levels of lithium for assess...
Jesus, Susana; Ventura, Marta; Assunção, Ricardo; Gueifão, Sandra; Delgado, Inês; Rego, Andreia; Ribeiro, Mariana; Martins, Marta; Neves, OrquídiaThe energetic green transition is increasing the demand for lithium (Li) exploitation. However, the Li supply faces challenges like limited reserves and environmental concerns. This pioneer study aims to characterize the Li concentrations in the region around the Barroso mine, in Portugal, by collecting and analyzing samples of cabbage, potato, drinking and irrigation water and soil from two nearby sites, and p...
Burnout em enfermeiros nos cuidados ao doente crítico em contexto pós pandemia ...
Martins, Marta; Veiga-Branco, AugustaA Síndrome de Burnout, tornou-se expressiva, na pandemia de Covid-19, com consequências na vida pessoal e profissional dos enfermeiros. Objetivo: Reconhecer a perceção de comportamentos da Síndrome de Burnout, por enfermeiros em Medicina Intensiva, pós pandemia Covid-19; analisar as relações entres as variáveis sociodemográficas e profissionais e o nível da Síndrome de Burnout. Método: Estudo transversal e anal...
Pine Nutshells and Their Biochars as Sources of Chemicals, Fuels, Activated Car...
Şen, Ali Umut; Rodrigues, João F.G.; Almeida, Daiana; Fernandes, Ângela; Gonçalves, Margarida; Martins, Marta; Santos, Diogo M.F.; Pereira, HelenaPine nutshells (PNSs) are lignocellulosic waste materials with limited use in domestic heating. However, a biorefinery approach may be applied to fractionate PNSs and produce chemicals, materials, and improved solid fuels. In this study, we fractionated PNSs and produced antioxidant extracts, lignins, polysaccharides, chars, and activated carbons and analyzed their potential applications. Pyrolytic kinetic mode...