36 documents found, page 1 of 4
Bacterioplankton community diversity of a portuguese aquifer system (Maciço Cal...
Figueiredo, Daniela R. de; Melo, Maria T. Condesso de; Saraiva, Pedro P.; Oliveira, Joana; Gonçalves, Ana M. M.; Reboleira, Ana Sofia P. S.Climate change may increase the vulnerability of aquifers to contamination through extreme precipitation and extended drought periods. Therefore, the understanding of groundwater ecosystem dynamics is crucial, with bacterial assemblages playing a major role in biogeochemical cycles. The present research describes a geospatial study targeting the bacterial community structure of groundwaters from the largest kar...
Potential effects of the discharge of wastewater treatment plant (WWTP) effluen...
Silva, Carlos; Santos, Joana Isabel; Vidal, Tânia; Silva, Susana; Almeida, Salomé Fernandes Pinheiro; Gonçalves, Fernando José Mendes; Abrantes, NelsonWastewater treatment plant (WWTP) effluents can be sources of environmental contamination. In this study, we aimed to understand whether effluents of three different WWTPs may have ecological effects in riverine recipient ecosystems. To achieve this, we assessed benthic phytobenthos and macroinvertebrate communities at three different locations relative to the effluent discharge: immediately upstream, immediate...
Horizontal migration of zooplankton in lake–wetland interfaces. Can temperature...
Pereira, Joana Luísa; Lopes, Ana Sofia; Silva, Júlia; Vidal, Tânia; Abrantes, Nelson; Santos, Daniela; Brito, Moisés; Ferreira, Rui M. L.Lake ecology can be affected by exchange flows driven by horizontal temperature gradients in lake–wetland interfaces. In this work, we investigate the hypothesis that thermally driven flows modulate the horizontal migration patterns of freshwater zooplankters. A 48-h field campaign in a shallow lake (Lake Vela, Quiaios, Portugal) was carried out to test this hypothesis. Thermal differences between the littoral ...
Bacterioplankton Community Diversity of a Portuguese Aquifer System (Maciço Cal...
de Figueiredo, Daniela R.; Condesso de Melo, Maria T. Condesso de; Saraiva, Pedro P.; Oliveira, Joana; Gonçalves, Ana M. M.; Sofia Reboleira, AnaClimate change may increase the vulnerability of aquifers to contamination through extreme precipitation and extended drought periods. Therefore, the understanding of groundwater ecosystem dynamics is crucial, with bacterial assemblages playing a major role in biogeochemical cycles. The present research describes a geospatial study targeting the bacterial community structure of groundwaters from the largest kar...
Bacterioplankton Community Diversity of a Portuguese Aquifer System (Maciço Cal...
de Figueiredo, Daniela R.; Condesso de Melo, Maria T.; Saraiva, Pedro P.; Oliveira, Joana; Gonçalves, Ana M. M.; Sofia Reboleira, AnaClimate change may increase the vulnerability of aquifers to contamination through extreme precipitation and extended drought periods. Therefore, the understanding of groundwater ecosystem dynamics is crucial, with bacterial assemblages playing a major role in biogeochemical cycles. The present research describes a geospatial study targeting the bacterial community structure of groundwaters from the largest kar...
Do Freshwater and Marine Bivalves Differ in Their Response to Wildfire Ash? Eff...
Jesus, Fátima; Mesquita, Filipa; Virumbrales Aldama, Elisa; Marques, Ana; Gonçalves, Ana M. M.; Magalhães, Luísa; Nogueira, António J. A.; Ré, AnaWildfires constitute a source of contamination to both freshwater and marine ecosystems. This study aimed to compare the antioxidant defense response of the freshwater clam Corbicula fluminea and the marine cockle (Cerastoderma edule) to wildfire ash exposure and the concomitant metal body burden. Organisms were exposed to different concentrations (0%, 12.5%, 25%, 50%, and 100%) of aqueous extracts of Eucalypt ...
Do Freshwater and Marine Bivalves Differ in Their Response to Wildfire Ash? Eff...
Jesus, Fátima; Mesquita, Filipa; Virumbrales Aldama, Elisa; Marques, Ana Margarida; Gonçalves, Ana M M; Magalhães, Luísa; Nogueira, António J A; Ré, AnaWildfires constitute a source of contamination to both freshwater and marine ecosystems. This study aimed to compare the antioxidant defense response of the freshwater clam Corbicula fluminea and the marine cockle (Cerastoderma edule) to wildfire ash exposure and the concomitant metal body burden. Organisms were exposed to different concentrations (0%, 12.5%, 25%, 50%, and 100%) of aqueous extracts of Eucalypt ...
Effects of wildfire ashes on aquatic invertebrates: First molecular approach on...
Muñiz González, Ana-Belén; Campos, Isabel; Ré, Ana; Martínez-Guitarte, José-Luis; Abrantes, NelsonThe wildfire magnification in recent years has raised increasing concern about their adverse impacts on the environment. Wildfires are recognized as an important source of diffuse pollution for the nearby aquatic systems being potentially toxic to aquatic life. Albeit previous studies with wildfire runoff/ashes observed effects in aquatic organisms, to date, different severity origins of ashes and their impact ...
A review on polycyclic aromatic hydrocarbons distribution in freshwater ecosyst...
Jesus, Fátima; Pereira, Joana L.; Campos, Isabel; Santos, Martha; Ré, Ana; Keizer, Jacob; Nogueira, António; Gonçalves, Fernando J. M.; Abrantes, NelsonPolycyclic aromatic hydrocarbons (PAHs) are a group of organic compounds, found ubiquitously in all environmental compartments. PAHs are considered hazardous pollutants, being of concern to both the environmental and human health. In the aquatic environment, PAHs tend to accumulate in the sediment due to their high hydrophobicity, and thus sediments can be considered their ultimate sink. Concurrently, sediments...
Avaliação dos efeitos dos incêndios florestais na espécie bentónica Chironomus ...
Jesus, Fátima; Santos, Martha; Ré, Ana; Campos, Isabel; Pereira, Joana L.; Gonçalves, Fernando J.M.; Abrantes, Nelson; Serpa, DalilaOs incêndios florestais constituem uma fonte de contaminação difusa, sendo reconhecidos como uma ameaça à biodiversidade dos ecossistemas aquáticos. No entanto, os seus efeitos nos organismos aquáticos permanecem pouco estudados. Neste trabalho avaliou-se o efeito dos contaminantes associados aos incêndios florestais em organismos bentónicos da espécie Chironomus riparius. Para tal, foram recolhidos sedimentos ...