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  • 1
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    Unknown
    Monthly-resolved swordfish bycatch data from Milazzo tuna trap, 1896-1901 (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-28
    Description: The data are swordfish (Xiphias gladius) bycatches from the artisanal bluefin tuna fishing trap located at Milazzo, Sicily, Italy. The data have been recovered from historical records, reports and archives associated with the traps. Data records include the locations and dates for the catches and the catch in numbers and/or weight in given months. Catch data in weight are not available on specific days for these years at this site. The time period is 1896-1901. Catch data in numbers are however available on specific days for these years at this site; see accompanying data set #928996. The data have been recovered to increase understanding of the long-term dynamics of the population and its fisheries, including effects of exploitation and climate variability and change, and to provide baseline knowledge against which future variations can be compared.
    Keywords: artisanal fishing; bycatch; Counting, visual; DATE/TIME; DEPTH, water; Fish, wet weighted; Italy; Latitude of event; Longitude of event; Mediterranean Sea; Mediterranean Sea, Western Basin; Milazzo; Oceans Past Inititative; OPI; swordfish; trap; Trap, fish; TRAPF; Xiphias gladius; Xiphias gladius, monthly landings in mass; Xiphias gladius, monthly landings in numbers
    Type: Dataset
    Format: text/tab-separated-values, 38 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Swordfish bycatch data from tuna traps located at four sites in Italy, 1896-2010 (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-28
    Description: The data set contains swordfish (Xiphias gladius) bycatches from artisanal bluefin tuna fishing traps located at four sites in Italy. Data records include the locations and dates for the catches and the catch in numbers and/or weight on given days during 1896-2010. The data have been recovered to increase understanding of the long-term dynamics of the population and its fisheries, including effects of exploitation and climate variability and change, and to provide baseline knowledge against which future variations can be compared. There are presently few other similarly long data sets for this species in this region. The data have been recovered from historical records, reports and archives associated with the traps.
    Keywords: artisanal fishing; bycatch; CapoPassero; Counting, visual; DATE/TIME; DEPTH, water; Event label; Favignana; FavignanaFormica; Fish, wet weighted; Formica; Italy; Latitude of event; Longitude of event; Mediterranean Sea; Mediterranean Sea, Western Basin; Milazzo; Oceans Past Inititative; OPI; Portoscuso; swordfish; trap; Trap, fish; TRAPF; Xiphias gladius; Xiphias gladius, mass
    Type: Dataset
    Format: text/tab-separated-values, 8494 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Unknown
    Timing and duration of fishing seasons for artisanal bluefin tuna traps at four sites in Italy, 1896-2010 (2021)
    PANGAEA
    Details
    Publication Date: 2023-02-12
    Description: This data set contains data for the start, end and duration of the fishing season for artisanal bluefin tuna fishing traps located at four sites in Italy during 1896-2010. The data have been recovered from historical records, reports and archives associated with the traps.
    Keywords: artisanal fishing; bluefin tuna trap; bycatch; Calculated; CapoPassero; Date/time end; Date/time start; DEPTH, water; Duration, number of days; Event label; FavignanaFormica; fishing season; Italy; Latitude of event; Longitude of event; Mediterranean Sea; Mediterranean Sea, Western Basin; Milazzo; Oceans Past Inititative; OPI; Portoscuso; swordfish; timing; trap; Trap, fish; TRAPF; Xiphias gladius
    Type: Dataset
    Format: text/tab-separated-values, 393 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Unknown
    The effect of Mistral (a strong NW wind) episodes on the occurrence and abundance of Atlantic bluefin tuna ( Thunnus thynnus ) in the trap fishery of Sardinia (W Mediterranean) (2013)
    Institut de Ciències del Mar de Barcelona, CSIC
    Details
    Publication Date: 2013-10-20
    Description: From April to June Atlantic bluefin tuna, Thunnus thynnus , migrate along the western Sardinian coastline in a southward direction, where they are intercepted by the trap fishery. Fishermen claim that Mistral episodes facilitate the entry of tuna schools towards the traps, thus increasing capture rates. To test the fishermen’s hypothesis we conducted underwater visual counts of tuna in the trap chambers and analysed these data under the effect of wind. The results indicate a “stair-step” pattern in the abundance of tuna, demonstrating that major increases in abundance are associated with the Mistral. The second analytical approach involved a longer time scale to test whether higher Mistral occurrences corresponded to periods when higher captures were recorded. Using a linear regression model we found a significant correlation (p 〈 0.01) between catches and the wind speed class ≤ 15 knots. We hypothesize that the wind-driven current may produce favourable conditions for tuna migration and could play a significant role in enabling fish to save energy. It was also noted that the wind speed class 〉 15 knots seemed to have a negative effect on captures. This pattern may be caused by wind-induced advection of coastal waters generating a physical boundary that may have had a deterrent effect on tuna schools.
    Print ISSN: 0214-8358
    Electronic ISSN: 1886-8134
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Institut de Ciències del Mar de Barcelona, CSIC
    Location Call Number Limitation Availability
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    PAPER CURRENT
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