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Portuguese Institute of the Sea and Atmosphere

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    The parameters that were considered as being able to give indications about the state of zooplanktonic populations were the abundance (biovolume) and the specific and population structures of the epi- (living in the 0 to 150 meters deep) and mesoplanktonic (living in the layer from 150 to 1000 meters deep). The abundance (biovolume) as well as the specific and population structures of epi- (living in 0 to 150 meter depth) and mesoplanktonic (living in 150 to 1000 meter depth) communities were used to assess the condition of zooplanktonic populations.

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    This report presents the results of the fifth research cruise in the waters off Guiné-Bissau coast from 7 May to 5 July 1995, on board of the Portuguese RV “Capricórnio”. 33 plankton surveys using a FAO net were carried on.

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    The objective of this data collection was to collect plankton samples to allow the analysis of the spatial and temporal distribution of decapod larvae in the water column in the south and southwestern Portuguese coast and to assess its correlations with environmental parameters.

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    The “Ciclos de Produção Planctónica e Sua Relação com os Recursos Pesqueiros” project aims to describe the dynamics of planktonic communities associated with the coastal upwelling system in Portugal. This description is important for understanding the bio-oceanographic processes that condition posture, growth and survival in pre-recruitment phases, as well as patterns of abundance, distribution and migration of fishery resources, in particular small pelagic species. In addition to this goal, project also aims to determine the areas, seasons and the laying intensity of these species.

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    The objective of this data collection was to study the structure of the mesopelagic ecosistem off the Northwestern Portuguese coast which is composed by planktonic and nectonics organisms. Mesopelagic organisms live during the day concentrating in big numbers in deeper depths while during the night migrates towards the upper layers. The data was collected aiming to study the composition and the Dynamics of the mesopelagic community and their trophic relations with the fish in the area. Data was collected with an Isaac-Kidd midwater trawl in May 1998 and 2000 and February 1999, together with environmental parameters as temperature, salinity, etc.

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    This data was acquired at the Cascais monitoring site, which is a station of the time-series CASCAIS-WATCH, the oceanographic observation programme of the Oceanography and Plankton Group of the Instituto Português do Mar e da Atmosfera (IPMA). The station is located off Cascais Bay, outside the Tagus River estuary at 38°40’N 09°26W, in a water depth of around 38m. Zooplankton samples are collected from 30m to the surface on a monthly basis with a WP2 net (50cm diameter, 200μm mesh).

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    <p>Hydrographic Institute campaigns in collaboration with the Marine Biology Station (predecessor of INIP, IPIMAR, and IPMA) of the CAPEC program (1970s).</p>

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    The objective of this data collection was to analise the daily vertical migration of decapod larvae in the water column in the northwestern portuguese coast and to assess its correlations with environmental parameteres. In order to do this plankton samples were collected with Bongo nets, LHPR multisampler and Neuston net in a area between the north western Portuguese coast and the 10 °W and between the 40° and 42°N and, aditionally at a fixed location during a 67 hours period, every two hours. In the fixed sampling point a plankton trap was also deployed. The data set presented corresponds to the zooplankton analysed in all the samples taken. This work is part of the ProRecruit project, which aimed to describe the spatial and temporal variability of the recruitment of coastal invertebrate species that show a planktonic larvar phase in their lifecylce, and understand the impact of environmental variables which may control its supply to the coastal systems.

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    The dataset provides a quantitative list of the benthic macrofauna taxa, identified to species level, which was collected from soft sediments in the Prof. Luiz Saldanha Marine Park (Arrábida, SW Portugal) between 2007 and 2009, at depths ranging from 10 to 100 m, aiming at describing community structure and distribution as well as classifying and mapping benthic habitats according to the EUNIS system.