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Effects of restoration management on the estuarine isopod Cyathura carinata: me...
Ferreira, S.; Brandão, A.; Baeta, A.; Neto, J.; Lillebø, A.; Jensen, K.; Pardal, M.Abstract A restoration programme was introduced in the Mondego Estuary (Portugal) to recover seagrass beds of Zostera noltii endangered by eutrophication. A long-term survey of 10 years was used to assess the development of the processes involved, focusing one of the key species (Cyathura carinata, Isopoda). The mitigation measures implemented since 1998 (nutrient loading reduction, freshwater circulation impr...
Biology, population dynamics and secondary production of the green crab Carcinu...
Baeta, A.; Cabral, H. N.; Neto, J. M.; Marques, J. C.; Pardal, M. A.The biological features, population dynamics and secondary production of Carcinus maenas were studied between June 2003 and June 2004 in four areas within the Mondego estuary, Portugal. Benthic samples were collected monthly, during the night, at high water of spring tides using a 2-m beam trawl, and plankton samples were collected monthly, during the day, at high tide with a Bongo net. Only the first zoeae sta...
Macroinvertebrate response to different species of macroalgal mats and the role...
Cardoso, P. G.; Pardal, M. A.; Raffaelli, D.; Baeta, A.; Marques, J. C.Over the last 20 years, the Mondego estuary, Portugal has experienced excessive growth of macroalgae especially in the inner parts of the system, with several algal species implicated. In this study, we compare the effects of morphologically different species, the red alga Gracilaria verrucosa and the green macroalga Enteromorpha intestinalis on macrobenthic assemblages, by a field experiment whereby the biomas...
Protocolo da Embrapa Agrobiologia para análise de nitrogênio em adubos orgânico...
ALVES, B. J. R.; BAÊTA, A. M.; ALVES, J. V.Preparo das amostras. Adubos orgânicos e solo. Material necessário. Procedimento. Solo N total. Material necessário. Procedimento. Tecido de planta: nitrogênio total. Material necessário. Procedimento. Análises de nitrogênio método de digestão semi-micro Kjeldahl, destilação á vapor e titulação. Material necessário. Reagentes e soluções. Equipamentos e vidraria. Procedimento. Preparo da mistura catalizadora. Di...
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