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Systematic processes of land use/land cover change to identify relevant driving...
Teixeira, Zara; Teixeira, Heliana; Marques, J. C.Land use and land cover (LULC) are driving forces that potentially exert pressures on water bodies, which are most commonly quantified by simply obtained aggregated data. However, this is insufficient to detect the drivers that arise from the landscape change itself. To achieve this objective one must distinguish between random and systematic transitions and identify the transitions that show strong signals of ...
Good Environmental Status of marine ecosystems: What is it and how do we know w...
Borja, Angel; Elliott, Mike; Andersen, Jesper H.; Cardoso, Ana C.; Carstensen, Jacob; Ferreira, João G.; Heiskanen, Anna-Stiina; Marques, J. C.The European Marine Strategy Framework Directive (MSFD) requires EU Member States (MS) to achieve Good Environmental Status (GEnS) of their seas by 2020. We address the question of what GEnS entails especially with regard to the level at which targets are set (descriptors, criteria, indicators), to scales for assessments (regional, sub-divisions, site-specific), and to difficulties in putting into practice the ...
The importance of habitat-type for defining the reference conditions and the ec...
Gamito, Sofia; Patrício, Joana; Neto, João M.; Marques, João Carlos; Teixeira, HelianaCoastal lagoons are complex systems, with considerable habitat heterogeneity and often subject to high temporal dynamics, which constitutes a great challenge for ecological assessment programs. For defining reference conditions for benthic invertebrates, under the EU Water Framework Directive objectives, historical data from the Ria Formosa leaky lagoon (wet surface area of about 105 km2) located in Southern Po...
Feeding diversity index as complementary information in the assessment of ecolo...
Gamito, Sofia; Patrício, Joana; Neto, João M.; Teixeira, Heliana; Marques, João CarlosThe feeding diversity of macroinvertebrates from the estuary of Mondego was estimated with Shannon–Wiener complementary evenness following the methodology presented in Gamito and Furtado (2009. Ecological Indicators, 9: 1009-1019). Results were compared with those from BAT (Benthic Assessment Tool; Teixeira et al., 2009. Marine Pollution Bulletin, 58: 1477-1786) applied to the same data set, obtained from sampl...
Benthic macroinvertebrates as ecological indicators for estuarine and coastal e...
Teixeira, Heliana Lilita GonçalvesThe aim of the research work presented in this thesis is to be a contribution to the field of ecological assessment in coastal and transitional ecosystems. The main goals were: a) to present a method for the assessment of the ecological status of benthic macroinvertebrate communities in Portuguese transitional waters that would meet the requirements of the European Water Framework Directive (WFD); and b) to pro...
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