1,721,017 research outputs found

    Mesozooplankton abundance and species composition in the Levantine Sea in November 1991

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    Mouth diameter of the net was 113 cm, mesh size 200 µm. Samples were immediately fixed with formaldehyde (2-4% final concentration) for specimen identification and counts. Volumes of filtered seawater were estimated by multiplying the area of the net mouth by heights of sampled layers from winch readings. Identification and counts of specimens were performed on aliquots (1/4) of the fixed samples by using a graduate large-bore pipette. Copepods were identified to the species level and separated into females, males and juveniles (copepodites). All other taxa were identified at the species level when possible, or at higher taxonomic levels. Taxonomic identification was done according to the most relevant and updated taxonomic literature

    MARECHIARA-mesozooplankton long-term time-series at the fixed coastal station in the Gulf of Naples: abundance and biomass, data for the years 1984-2006

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    The MARECHIARA-mesozooplankton dataset contains mesozooplankton data collected in the ongoing time-series at Sation MC (40°48.5' N, 14°15' E) in the Gulf of Naples. This dataset spans over the period 1984-2006 and contains data of mesozooplankton abundance and species composition as well as biomass (as dry weight). Mesozooplankton was regularly sampled in 1984-1990 and 1995-2006, only a few samples were collected in 1991-1992 and no samples in 1993-1994. During the first period of the series sampling frequency was fortnightly, and weekly since 1995

    Mesozooplankton abundance and species composition in the Gulf of Naples and the Gulf of Salerno in November 1986

    No full text
    Mouth diameter of the net was 113 cm, mesh size 200 µm. Samples were immediately fixed with formaldehyde (2-4% final concentration) for specimen identification and counts. Volumes of filtered seawater were estimated by multiplying the area of the net mouth by heights of sampled layers from winch readings. Identification and counts of specimens were performed on 1/4 of fixed samples by using the Huntsman beaker subsampling technique (Van Guelpen et al., 1982). Copepods were identified to the species level and separated into females, males and juveniles (copepodites). All other taxa were identified at the species level when possible, or at higher taxonomic levels. Taxonomic identification was done according to the most relevant and updated taxonomic literature

    Abundance of mesozooplankton in the Sicily Channel in October 1991. Part 1

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    Mouth diameter of the net was 113 cm, mesh size 200 µm. Samples were immediately fixed with formaldehyde (2-4% final concentration) for specimen identification and counts. Volumes of filtered seawater were estimated by multiplying the area of the net mouth by heights of sampled layers from winch readings. Identification and counts of specimens were performed on aliquots (1/2-1/4) of fixed samples by using a graduate large-bore pipette. Copepods were identified to the species level and separated into females, males and juveniles (copepodites). All other taxa were identified at the species level when possible, or at higher taxonomic levels. Taxonomic identification was done according to the most relevant and updated taxonomic literature

    Mesozooplankton abundance and species composition in the Gulf of Naples and the Gulf of Salerno in March 1987. Part 2

    No full text
    Mouth diameter of the net was 113 cm, mesh size 200 µm. Samples were immediately fixed with formaldehyde (2-4% final concentration) for specimen identification and counts. Volumes of filtered seawater were estimated by multiplying the area of the net mouth by heights of sampled layers from winch readings. Identification and counts of specimens were performed on 1/4 of fixed samples by using the Huntsman beaker subsampling technique (Van Guelpen et al., 1982). Copepods were identified to the species level and separated into females, males and juveniles (copepodites). All other taxa were identified at the species level when possible, or at higher taxonomic levels. Taxonomic identification was done according to the most relevant and updated taxonomic literature

    Long-term time-series of mesozooplankton biomass in the Gulf of Naples, data for the years 1995-2000

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    Total mesozooplankton biomass was measured as dry weight on a fresh sample. Samples were sieved on 200 µm nitex, briefly rinsed with distilled water to remove salt, transferred on pre-weighted alluminium foil and placed in an oven at 60°C. The samples were weighted on a microbalance after 24 hours and again 2-3 times within the following seven days, until the weight was constant. This latter value was considered as dry weight

    Long-term time-series of mesozooplankton biomass in the Gulf of Naples, data for the years 2001-2004

    No full text
    Total mesozooplankton biomass was measured as dry weight on a fresh sample. Samples were sieved on 200 ?m nitex, briefly rinsed with distilled water to remove salt, transferred on pre-weighted alluminium foil and placed in an oven at 60°C. The samples were weighted on a microbalance after 24 hours and again 2-3 times within the following seven days, until the weight was constant. This latter value was considered as dry weight
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