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Multi-scale approach using phytoplankton as a first step towards the definition...
Cabecinha, E.; Cortes, R.; Cabral, J.A.; Ferreira, M.T.; Lourenço, M.; Pardal, M.A.The growing need to analyse the present state of ecosystems and predict their rate of change has triggered a demand to explore species environment relationships for assessing alterations under anthropogenic influence. The Water Framework Directive (WFD) requires the definition of different types of water bodies which are of relevance when assessing their ecological status. The main aim of this study was to defi...
Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai...
Santos, J.M.; Ferreira, M.T.Research Article ; Over the last decade there has been a major rise in the number of attempts at fish conservation and management as a response to the widespread degradation of aquatic ecosystems. The assessments involved are rarely planned and executed with inputs from the species life history, particularly their microhabitat use over space and time.The seasonal and sizerelated microhabitat use of two critic...
Monitoring fish passes using infrared beaming: a case study in an Iberian river
Santos, J.M.; Pinheiro, P.J.; Ferreira, M.T.; Bochechas, J.An application of a new automated fish counting device – the Riverwatcher System (RW) – was used to monitor upstream fish movements in a pool-and-weir fish pass in the River Zeˆ zere, Portugal, for 141 days from June 2002 to May 2003. Fish populations were also collected downstream using multimesh gillnets (5 different mesh sizes ranging from 30 mm to 85 mm knot to knot; ratio between mesh sizes of about 1.30) ...
Ecological traits of fish assemblages from Mediterranean Europe and its implica...
Ferreira, M.T.; Caiola, N.; Casals, F.; Cortes, R.; Economous, A; Garcia-Jalon, D.; Ilhéu, M.; Martinez-Capel, F.; Oliveira, J.; Pont, D.; Prenda, J.Mediterranean river systems are characterised by more diverse fish assemblages and regional ecological processes compared with the rest of Europe. A data set from Mediterranean France, Iberia and Greece ( 2000 sites) was used to describe the characteristics of fish assemblages, explore their responses to anthropogenic disturbance and analyse the implications for river quality assessment. There was a southwards ...
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