Project/scholarship details
- Project/scholarship ID
117068
- Reference
PTDC/AAC-AMB/117068/2010
- FundRef URI
- Funder
FCT - Fundação para a Ciência e a Tecnologia, I.P.
- Funder's country
Portugal
- Funding program
5876-PPCDTI
- Funding amount
160,000.00 €
- Start date
2012-04-30
- End date
2015-09-29
Documents
Effects of plant-litter quality on litter decomposition by benthic invertebrate...
Pereira, Ana Maria NovaisDissertação de mestrado em Ecology; Human impacts on freshwater ecosystems, such as nutrient enrichment and changes in riparian vegetation, are increasing, and policy makers are making efforts to identify management priorities. A critical point is the assessment of the ecological integrity of ecosystems. Benthic invertebrate communities have been widely used to assess the structural condition of streams, becaus...
Effects of increased temperature and aquatic fungal diversity on litter decompo...
Geraldes, Paulo; Pascoal, Cláudia; Cássio, FernandaThis version thus not correspond to the final version of the journal. To assess the final version please go to: http://www.sciencedirect.com/science/article/pii/S1754504812000876; Climate warming and biodiversity loss are two major factors threatening freshwaters. Aquatic hyphomycetes are fungi that play a key role in organic matter turnover in streams. To assess the impacts of temperature increase and aquatic ...
Impacts of invasive omnivore predators on plan litter decomposition in streams:...
Carvalho, Francisco André CostaDissertação de mestrado em Ecologia; The introduction of non-indigenous invasive species (NIS) has gained momentum in Ecology in recent years mainly because they can cause changes in biodiversity or they may function differently than the native species. In forested streams, the canopy of riparian vegetation decreases the availability of light in freshwater ecosystems and, so, plant litter from riparian vegetati...
Plant litter diversity affects invertebrate shredder activity and the quality o...
Fernandes, Isabel Rodrigues; Duarte, Sofia; Cássio, Fernanda; Pascoal, CláudiaDraft. Published online 06 January 2015; There is evidence that loss of riparian plant diversity alters the availability and quality of resources in streams, but little is known about how such effects change with time after loss of diversity. We used a microcosm approach with leaves of alder, oak and eucalypt previously colonised by microbes in a mixed forest stream to test how loss of litter diversity and time...
Eutrophication modulates plant-litter diversity effects on litter decomposition...
Fernandes, Eva Lima; Fernandes, Isabel; Pereira, Ana; Geraldes, Paulo; Cássio, Fernanda; Pascoal, CláudiaFreshwater ecosystems are severely impacted by changes in riparian vegetation and eutrophication, but their interactive effects on litter decomposition and associated biota remain poorly understood. We placed 5 leaf species in coarse-mesh bags alone or in mixtures and immersed them in 6 low-order streams along a eutrophication gradient. Fungal and invertebrate assemblages were mainly structured by stream eutrop...
Responses of primary production, leaf litter decomposition and associated commu...
Dunck, Barbara; Lima-Fernandes, Eva; Cássio, Fernanda; Cunha, Ana; Rodrigues, Liliana; Pascoal, CláudiaWe assessed the eutrophication effects on leaf litter decomposition and primary production, and on periphytic algae, fungi and invertebrates. According to the subsidy-stress model, we expected that when algae and decomposers were nutrient limited, their activity and diversity would increase at moderate levels of nutrient enrichment, but decrease at high levels of nutrients, because eutrophication would lead to ...
Effects of inter and intraspecific diversity and genetic divergence of aquatic ...
Andrade, Ricardo; Pascoal, Cláudia; Cássio, FernandaFreshwater fungi play a key role in plant litter decomposition and have been used to investigate the relationships between biodiversity and ecosystem functioning in streams. Although there is evidence of positive effects of biodiversity on ecosystem processes, particularly on biomass produced, some studies have shown that neutral or negative effects may occur. We manipulated the composition and the number of sp...
Structural and functional measures of leaf-associated invertebrates and fungi a...
Pereira, Ana Margarida Macedo Bernardes; Geraldes, Paulo; Lima-Fernandes, Eva; Fernandes, Isabel Rodrigues; Cássio, Fernanda; Pascoal, CláudiaEutrophication is a major threat to freshwater ecosystems worldwide that affects aquatic biota and compromises ecosystem functioning. In this study, we assessed the potential use of leaf decomposition and associated decomposer communities to predict stream eutrophication. Because leaf quality is expected to affect leaf decomposition, we used five leaf species, differing in their initial nitrogen concentration. ...
Ethanol and phenanthrene increase the biomass of fungal assemblages and decreas...
Barros, Diana; Oliveira, Patricia; Pascoal, Cláudia; Cássio, FernandaFungi, particularly aquatic hyphomycetes, have been recognized as playing a dominant role in microbial decomposition of plant litter in streams. In this study, we used a microcosm experiment with different levels of fungal diversity (species number and identity) using monocultures and combinations with up to five aquatic hyphomycete species (Articulospora tetracladia, Tricladium splendens, Heliscus submersus, T...
Taxa-area relationship of aquatic fungi on deciduous leaves
Duarte, Sofia Alexandra Ferreira; Cássio, Fernanda; Pascoal, Cláudia; Bärlocher, FelixOne of the fundamental patterns in macroecology is the increase in the number of observed taxa with size of sampled area. For microbes, the shape of this relationship remains less clear. The current study assessed the diversity of aquatic fungi, by the traditional approach based on conidial morphology (captures reproducing aquatic hyphomycetes) and next generation sequencing (NGS; captures other fungi as well),...
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